Articles | Volume 18, issue 4
https://doi.org/10.5194/cp-18-793-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-18-793-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Apr 2022
Research article |
| 14 Apr 2022
| 14 Apr 2022
Insights from 20 years of temperature parallel measurements in Mauritius around the turn of the 20th century
Samuel O. Awe
Irish Climate Analysis and Research Units (ICARUS), Department of
Geography, Maynooth University, Maynooth, Ireland
Martin Mahony
School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, UK
Edley Michaud
Mauritius Meteorological Society, Quatres Bornes, Mauritius
Conor Murphy
Irish Climate Analysis and Research Units (ICARUS), Department of
Geography, Maynooth University, Maynooth, Ireland
Simon J. Noone
Irish Climate Analysis and Research Units (ICARUS), Department of
Geography, Maynooth University, Maynooth, Ireland
Victor K. C. Venema
Meteorological Institute, University of Bonn, Bonn, Germany
Thomas G. Thorne
independent researcher: Co. Kildare, Ireland
Irish Climate Analysis and Research Units (ICARUS), Department of
Geography, Maynooth University, Maynooth, Ireland
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Masatomo Fujiwara, Bomin Sun, Anthony Reale, Domenico Cimini, Salvatore Larosa, Lori Borg, Christoph von Rohden, Michael Sommer, Ruud Dirksen, Marion Maturilli, Holger Vömel, Rigel Kivi, Bruce Ingleby, Ryan J. Kramer, Belay Demoz, Fabio Madonna, Fabien Carminati, Owen Lewis, Brett Candy, Christopher Thomas, David Edwards, Noersomadi, Kensaku Shimizu, and Peter Thorne
Atmos. Meas. Tech., 18, 2919–2955, https://doi.org/10.5194/amt-18-2919-2025, https://doi.org/10.5194/amt-18-2919-2025, 2025
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We assess and illustrate the benefits of high-altitude attainment of balloon-borne radiosonde soundings up to and beyond 10 hPa level from various aspects. We show that the extra costs and technical challenges involved in consistent attainment of high ascents are more than outweighed by the benefits for a broad variety of real-time and delayed-mode applications. Consistent attainment of high ascents should therefore be pursued across the balloon observational network.
Piers M. Forster, Chris Smith, Tristram Walsh, William F. Lamb, Robin Lamboll, Christophe Cassou, Mathias Hauser, Zeke Hausfather, June-Yi Lee, Matthew D. Palmer, Karina von Schuckmann, Aimée B. A. Slangen, Sophie Szopa, Blair Trewin, Jeongeun Yun, Nathan P. Gillett, Stuart Jenkins, H. Damon Matthews, Krishnan Raghavan, Aurélien Ribes, Joeri Rogelj, Debbie Rosen, Xuebin Zhang, Myles Allen, Lara Aleluia Reis, Robbie M. Andrew, Richard A. Betts, Alex Borger, Jiddu A. Broersma, Samantha N. Burgess, Lijing Cheng, Pierre Friedlingstein, Catia M. Domingues, Marco Gambarini, Thomas Gasser, Johannes Gütschow, Masayoshi Ishii, Christopher Kadow, John Kennedy, Rachel E. Killick, Paul B. Krummel, Aurélien Liné, Didier P. Monselesan, Colin Morice, Jens Mühle, Vaishali Naik, Glen P. Peters, Anna Pirani, Julia Pongratz, Jan C. Minx, Matthew Rigby, Robert Rohde, Abhishek Savita, Sonia I. Seneviratne, Peter Thorne, Christopher Wells, Luke M. Western, Guido R. van der Werf, Susan E. Wijffels, Valérie Masson-Delmotte, and Panmao Zhai
Earth Syst. Sci. Data, 17, 2641–2680, https://doi.org/10.5194/essd-17-2641-2025, https://doi.org/10.5194/essd-17-2641-2025, 2025
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In a rapidly changing climate, evidence-based decision-making benefits from up-to-date and timely information. Here we compile monitoring datasets to track real-world changes over time. To make our work relevant to policymakers, we follow methods from the Intergovernmental Panel on Climate Change (IPCC). Human activities are increasing the Earth's energy imbalance and driving faster sea-level rise compared to the IPCC assessment.
Derrick Muheki, Bas Vercruysse, Krishna Kumar Thirukokaranam Chandrasekar, Christophe Verbruggen, Julie M. Birkholz, Koen Hufkens, Hans Verbeeck, Pascal Boeckx, Seppe Lampe, Ed Hawkins, Peter Thorne, Dominique Kankonde Ntumba, Olivier Kapalay Moulasa, and Wim Thiery
EGUsphere, https://doi.org/10.5194/egusphere-2024-3779, https://doi.org/10.5194/egusphere-2024-3779, 2025
This preprint is open for discussion and under review for Geoscientific Model Development (GMD).
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Archives worldwide host vast records of observed weather data crucial for understanding climate variability. However, most of these records are still in paper form, limiting their use. To address this, we developed MeteoSaver, an open-source tool, to transcribe these records to machine-readable format. Applied to ten handwritten temperature sheets, it achieved a median accuracy of 74%. This tool offers a promising solution to preserve records from archives and unlock historical weather insights.
Philippe Marbaix, Alexandre K. Magnan, Veruska Muccione, Peter W. Thorne, and Zinta Zommers
Earth Syst. Sci. Data, 17, 317–349, https://doi.org/10.5194/essd-17-317-2025, https://doi.org/10.5194/essd-17-317-2025, 2025
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Since 2001, the Intergovernmental Panel on Climate Change (IPCC) has used burning-ember diagrams to show how risks increase with global warming. We bring these data into a harmonized framework available through an online Climate Risks Embers Explorer. Without high levels of adaptation, most risks reach a high level around 2 to 2.3 °C of global warming. Improvements in future reports could include systematic collection of explanatory information and broader coverage of regions and adaptation.
Piers M. Forster, Chris Smith, Tristram Walsh, William F. Lamb, Robin Lamboll, Bradley Hall, Mathias Hauser, Aurélien Ribes, Debbie Rosen, Nathan P. Gillett, Matthew D. Palmer, Joeri Rogelj, Karina von Schuckmann, Blair Trewin, Myles Allen, Robbie Andrew, Richard A. Betts, Alex Borger, Tim Boyer, Jiddu A. Broersma, Carlo Buontempo, Samantha Burgess, Chiara Cagnazzo, Lijing Cheng, Pierre Friedlingstein, Andrew Gettelman, Johannes Gütschow, Masayoshi Ishii, Stuart Jenkins, Xin Lan, Colin Morice, Jens Mühle, Christopher Kadow, John Kennedy, Rachel E. Killick, Paul B. Krummel, Jan C. Minx, Gunnar Myhre, Vaishali Naik, Glen P. Peters, Anna Pirani, Julia Pongratz, Carl-Friedrich Schleussner, Sonia I. Seneviratne, Sophie Szopa, Peter Thorne, Mahesh V. M. Kovilakam, Elisa Majamäki, Jukka-Pekka Jalkanen, Margreet van Marle, Rachel M. Hoesly, Robert Rohde, Dominik Schumacher, Guido van der Werf, Russell Vose, Kirsten Zickfeld, Xuebin Zhang, Valérie Masson-Delmotte, and Panmao Zhai
Earth Syst. Sci. Data, 16, 2625–2658, https://doi.org/10.5194/essd-16-2625-2024, https://doi.org/10.5194/essd-16-2625-2024, 2024
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This paper tracks some key indicators of global warming through time, from 1850 through to the end of 2023. It is designed to give an authoritative estimate of global warming to date and its causes. We find that in 2023, global warming reached 1.3 °C and is increasing at over 0.2 °C per decade. This is caused by all-time-high greenhouse gas emissions.
Piers M. Forster, Christopher J. Smith, Tristram Walsh, William F. Lamb, Robin Lamboll, Mathias Hauser, Aurélien Ribes, Debbie Rosen, Nathan Gillett, Matthew D. Palmer, Joeri Rogelj, Karina von Schuckmann, Sonia I. Seneviratne, Blair Trewin, Xuebin Zhang, Myles Allen, Robbie Andrew, Arlene Birt, Alex Borger, Tim Boyer, Jiddu A. Broersma, Lijing Cheng, Frank Dentener, Pierre Friedlingstein, José M. Gutiérrez, Johannes Gütschow, Bradley Hall, Masayoshi Ishii, Stuart Jenkins, Xin Lan, June-Yi Lee, Colin Morice, Christopher Kadow, John Kennedy, Rachel Killick, Jan C. Minx, Vaishali Naik, Glen P. Peters, Anna Pirani, Julia Pongratz, Carl-Friedrich Schleussner, Sophie Szopa, Peter Thorne, Robert Rohde, Maisa Rojas Corradi, Dominik Schumacher, Russell Vose, Kirsten Zickfeld, Valérie Masson-Delmotte, and Panmao Zhai
Earth Syst. Sci. Data, 15, 2295–2327, https://doi.org/10.5194/essd-15-2295-2023, https://doi.org/10.5194/essd-15-2295-2023, 2023
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This is a critical decade for climate action, but there is no annual tracking of the level of human-induced warming. We build on the Intergovernmental Panel on Climate Change assessment reports that are authoritative but published infrequently to create a set of key global climate indicators that can be tracked through time. Our hope is that this becomes an important annual publication that policymakers, media, scientists and the public can refer to.
Louise J. Slater, Louise Arnal, Marie-Amélie Boucher, Annie Y.-Y. Chang, Simon Moulds, Conor Murphy, Grey Nearing, Guy Shalev, Chaopeng Shen, Linda Speight, Gabriele Villarini, Robert L. Wilby, Andrew Wood, and Massimiliano Zappa
Hydrol. Earth Syst. Sci., 27, 1865–1889, https://doi.org/10.5194/hess-27-1865-2023, https://doi.org/10.5194/hess-27-1865-2023, 2023
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Hybrid forecasting systems combine data-driven methods with physics-based weather and climate models to improve the accuracy of predictions for meteorological and hydroclimatic events such as rainfall, temperature, streamflow, floods, droughts, tropical cyclones, or atmospheric rivers. We review recent developments in hybrid forecasting and outline key challenges and opportunities in the field.
Katherine Dooley, Ciaran Kelly, Natascha Seifert, Therese Myslinski, Sophie O'Kelly, Rushna Siraj, Ciara Crosby, Jack Kevin Dunne, Kate McCauley, James Donoghue, Eoin Gaddren, Daniel Conway, Jordan Cooney, Niamh McCarthy, Eoin Cullen, Simon Noone, Conor Murphy, and Peter Thorne
Clim. Past, 19, 1–22, https://doi.org/10.5194/cp-19-1-2023, https://doi.org/10.5194/cp-19-1-2023, 2023
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The highest currently recognised air temperature (33.3 °C) ever recorded in the Republic of Ireland was logged at Kilkenny Castle in 1887. This paper reassesses the plausibility of the record using various methods such as inter-station reassessment and 20CRv3 reanalysis. As a result, Boora 1976 at 32.5 °C is presented as a more reliable high-temperature record for the Republic of Ireland. The final decision however rests with the national meteorological service, Met Éireann.
Amin Shoari Nejad, Andrew C. Parnell, Alice Greene, Peter Thorne, Brian P. Kelleher, Robert J. N. Devoy, and Gerard McCarthy
Ocean Sci., 18, 511–522, https://doi.org/10.5194/os-18-511-2022, https://doi.org/10.5194/os-18-511-2022, 2022
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We have collated multiple sources of tide gauge data for Dublin Port, and subsequently corrected them for bias. We have then shown that these corrected mean sea level measurements agree with nearby tide gauges to a far higher degree than the raw data. A longer-term comparison with Brest and Newlyn also indicates overall agreement. Our final adjusted dataset estimated the rate of sea level rise to be 1.1 mm/yr between 1953 and 2016 and 7 mm/yr between 1997 and 2016 at Dublin Port.
Hadush Meresa, Conor Murphy, Rowan Fealy, and Saeed Golian
Hydrol. Earth Syst. Sci., 25, 5237–5257, https://doi.org/10.5194/hess-25-5237-2021, https://doi.org/10.5194/hess-25-5237-2021, 2021
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The assessment of future impacts of climate change is associated with a cascade of uncertainty linked to the modelling chain employed in assessing local-scale changes. Understanding and quantifying this cascade is essential for developing effective adaptation actions. We find that not only do the contributions of different sources of uncertainty vary by catchment, but that the dominant sources of uncertainty can be very different on a catchment-by-catchment basis.
Seán Donegan, Conor Murphy, Shaun Harrigan, Ciaran Broderick, Dáire Foran Quinn, Saeed Golian, Jeff Knight, Tom Matthews, Christel Prudhomme, Adam A. Scaife, Nicky Stringer, and Robert L. Wilby
Hydrol. Earth Syst. Sci., 25, 4159–4183, https://doi.org/10.5194/hess-25-4159-2021, https://doi.org/10.5194/hess-25-4159-2021, 2021
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We benchmarked the skill of ensemble streamflow prediction (ESP) for a diverse sample of 46 Irish catchments. We found that ESP is skilful in the majority of catchments up to several months ahead. However, the level of skill was strongly dependent on lead time, initialisation month, and individual catchment location and storage properties. We also conditioned ESP with the winter North Atlantic Oscillation and show that improvements in forecast skill, reliability, and discrimination are possible.
Louise J. Slater, Bailey Anderson, Marcus Buechel, Simon Dadson, Shasha Han, Shaun Harrigan, Timo Kelder, Katie Kowal, Thomas Lees, Tom Matthews, Conor Murphy, and Robert L. Wilby
Hydrol. Earth Syst. Sci., 25, 3897–3935, https://doi.org/10.5194/hess-25-3897-2021, https://doi.org/10.5194/hess-25-3897-2021, 2021
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Weather and water extremes have devastating effects each year. One of the principal challenges for society is understanding how extremes are likely to evolve under the influence of changes in climate, land cover, and other human impacts. This paper provides a review of the methods and challenges associated with the detection, attribution, management, and projection of nonstationary weather and water extremes.
Fabio Madonna, Emanuele Tramutola, Souleymane Sy, Federico Serva, Monica Proto, Marco Rosoldi, Simone Gagliardi, Francesco Amato, Fabrizio Marra, Alessandro Fassò, Tom Gardiner, and Peter William Thorne
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2020-183, https://doi.org/10.5194/essd-2020-183, 2020
Revised manuscript not accepted
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In situ measurements, including radiosonde observations, are key for the study of climate. However, observations are more often than not influenced by instrumental effects which must be adjusted prior to their usage.
A novel approach, named RHARM (Radiosounding HARMonization), is able to improve quality of global radiosounding profiles of temperature, humidity and wind. RHARM also estimates the measurement uncertainties. This paper discusses the post-2004 radiosounding measurements only.
Ruud J. Dirksen, Greg E. Bodeker, Peter W. Thorne, Andrea Merlone, Tony Reale, Junhong Wang, Dale F. Hurst, Belay B. Demoz, Tom D. Gardiner, Bruce Ingleby, Michael Sommer, Christoph von Rohden, and Thierry Leblanc
Geosci. Instrum. Method. Data Syst., 9, 337–355, https://doi.org/10.5194/gi-9-337-2020, https://doi.org/10.5194/gi-9-337-2020, 2020
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This paper describes GRUAN's strategy for a network-wide change of the operational radiosonde from Vaisala RS92 to RS41. GRUAN's main goal is to provide long-term data records that are free of inhomogeneities due to instrumental effects, which requires proper change management. The approach is to fully characterize differences between the two radiosonde types using laboratory tests, twin soundings, and ancillary data, as well as by drawing from the various fields of expertise available in GRUAN.
Fabio Madonna, Rigel Kivi, Jean-Charles Dupont, Bruce Ingleby, Masatomo Fujiwara, Gonzague Romanens, Miguel Hernandez, Xavier Calbet, Marco Rosoldi, Aldo Giunta, Tomi Karppinen, Masami Iwabuchi, Shunsuke Hoshino, Christoph von Rohden, and Peter William Thorne
Atmos. Meas. Tech., 13, 3621–3649, https://doi.org/10.5194/amt-13-3621-2020, https://doi.org/10.5194/amt-13-3621-2020, 2020
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Radiosondes are one of the primary sources of upper-air data for weather and climate monitoring. In the last two decades, technological progress made available automated radiosonde launchers (ARLs), which are able to replace measurements typically performed manually. This work presents a comparative analysis of the technical performance of the ARLs currently available on the market and contribute to define a strategy to achieve the full traceability of the ARL products.
Simon Noone, Alison Brody, Sasha Brown, Niamh Cantwell, Martha Coleman, Louise Sarsfield Collins, Caoilfhionn Darcy, Dick Dee, Seán Donegan, Rowan Fealy, Padraig Flattery, Rhonda McGovern, Caspar Menkman, Michael Murphy, Christopher Phillips, Martina Roche, and Peter Thorne
Geosci. Commun., 2, 157–171, https://doi.org/10.5194/gc-2-157-2019, https://doi.org/10.5194/gc-2-157-2019, 2019
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The Global Land and Marine Observations Database aims to produce a comprehensive land-based meteorological data archive and inventory. Data sources contained stations in incorrect locations; therefore, we developed the Geo-locate project, enlisting the help of undergraduate geography students. The project has resolved 1926 station issues so far. Due to the success of the Geo-locate project, we encourage other organizations to engage university students to help resolve similar data issues.
Ralf Lindau and Victor Karel Christiaan Venema
Adv. Stat. Clim. Meteorol. Oceanogr., 4, 1–18, https://doi.org/10.5194/ascmo-4-1-2018, https://doi.org/10.5194/ascmo-4-1-2018, 2018
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Climate data contain spurious breaks, e.g., by relocation of stations, which makes it difficult to infer the secular temperature trend. Homogenization algorithms use the difference time series of neighboring stations to detect and eliminate this spurious break signal. For low signal-to-noise ratios, i.e., large distances between stations, the correct break positions may not only remain undetected, but segmentations explaining mainly the noise can be erroneously assessed as significant and true.
Conor Murphy, Ciaran Broderick, Timothy P. Burt, Mary Curley, Catriona Duffy, Julia Hall, Shaun Harrigan, Tom K. R. Matthews, Neil Macdonald, Gerard McCarthy, Mark P. McCarthy, Donal Mullan, Simon Noone, Timothy J. Osborn, Ciara Ryan, John Sweeney, Peter W. Thorne, Seamus Walsh, and Robert L. Wilby
Clim. Past, 14, 413–440, https://doi.org/10.5194/cp-14-413-2018, https://doi.org/10.5194/cp-14-413-2018, 2018
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This work reconstructs a continuous 305-year rainfall record for Ireland. The series reveals remarkable variability in decadal rainfall – far in excess of the typical period of digitised data. Notably, the series sheds light on exceptionally wet winters in the 1730s and wet summers in the 1750s. The derived record, one of the longest continuous series in Europe, offers a firm basis for benchmarking other long-term records and reconstructions of past climate both locally and across Europe.
Peter W. Thorne, Fabio Madonna, Joerg Schulz, Tim Oakley, Bruce Ingleby, Marco Rosoldi, Emanuele Tramutola, Antti Arola, Matthias Buschmann, Anna C. Mikalsen, Richard Davy, Corinne Voces, Karin Kreher, Martine De Maziere, and Gelsomina Pappalardo
Geosci. Instrum. Method. Data Syst., 6, 453–472, https://doi.org/10.5194/gi-6-453-2017, https://doi.org/10.5194/gi-6-453-2017, 2017
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The term system-of-systems with respect to observational capabilities is frequently used, but what does it mean and how can it be assessed? Here, we define one possible interpretation of a system-of-systems architecture that is based upon demonstrable aspects of observing capabilities. We develop a set of assessment strands and then apply these to a set of atmospheric observational networks to decide which observations may be suitable for characterising satellite platforms in future work.
Hélène Brogniez, Stephen English, Jean-François Mahfouf, Andreas Behrendt, Wesley Berg, Sid Boukabara, Stefan Alexander Buehler, Philippe Chambon, Antonia Gambacorta, Alan Geer, William Ingram, E. Robert Kursinski, Marco Matricardi, Tatyana A. Odintsova, Vivienne H. Payne, Peter W. Thorne, Mikhail Yu. Tretyakov, and Junhong Wang
Atmos. Meas. Tech., 9, 2207–2221, https://doi.org/10.5194/amt-9-2207-2016, https://doi.org/10.5194/amt-9-2207-2016, 2016
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Because a systematic difference between measurements of water vapor performed by space-borne observing instruments in the microwave spectral domain and their numerical modeling was recently highlighted, this work discusses and gives an overview of the various errors and uncertainties associated with each element in the comparison process. Indeed, the knowledge of absolute errors in any observation of the climate system is key, more specifically because we need to detect small changes.
K. M. Willett, R. J. H. Dunn, P. W. Thorne, S. Bell, M. de Podesta, D. E. Parker, P. D. Jones, and C. N. Williams Jr.
Clim. Past, 10, 1983–2006, https://doi.org/10.5194/cp-10-1983-2014, https://doi.org/10.5194/cp-10-1983-2014, 2014
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We have developed HadISDH, a new gridded global land monthly mean climate montitoring product for humidity and temperature from 1973 to then end of 2013 (updated annually) based entirely on in situ observations. Uncertainty estimates are provided. Over the period of record significant warming and increases in water vapour have taken place. The specific humidity trends have slowed since a peak in 1998 concurrent with decreasing relative humidity from 2000 onwards.
K. Willett, C. Williams, I. T. Jolliffe, R. Lund, L. V. Alexander, S. Brönnimann, L. A. Vincent, S. Easterbrook, V. K. C. Venema, D. Berry, R. E. Warren, G. Lopardo, R. Auchmann, E. Aguilar, M. J. Menne, C. Gallagher, Z. Hausfather, T. Thorarinsdottir, and P. W. Thorne
Geosci. Instrum. Method. Data Syst., 3, 187–200, https://doi.org/10.5194/gi-3-187-2014, https://doi.org/10.5194/gi-3-187-2014, 2014
Related subject area
Subject: Atmospheric Dynamics | Archive: Historical Records | Timescale: Instrumental Period
Air temperature changes in SW Greenland in the second half of the 18th century
Early 20th century Southern Hemisphere cooling
Precipitation reconstructions for Paris based on the observations by Louis Morin, 1665–1713 CE
Earliest meteorological readings in San Fernando (Cádiz, Spain, 1799–1813)
The weather diaries of the Kirch family: Leipzig, Guben, and Berlin (1677–1774)
Quantifying the contribution of forcing and three prominent modes of variability to historical climate
A 258-year-long data set of temperature and precipitation fields for Switzerland since 1763
Statistical reconstruction of daily temperature and sea level pressure in Europe for the severe winter 1788/89
Unlocking weather observations from the Societas Meteorologica Palatina (1781–1792)
The 1921 European drought: impacts, reconstruction and drivers
The importance of input data quality and quantity in climate field reconstructions – results from the assimilation of various tree-ring collections
Reconstruction of the track and a simulation of the storm surge associated with the calamitous typhoon affecting the Pearl River Estuary in September 1874
Early instrumental meteorological measurements in Switzerland
The "dirty weather" diaries of Reverend Richard Davis: insights about early colonial-era meteorology and climate variability for northern New Zealand, 1839–1851
A collection of sub-daily pressure and temperature observations for the early instrumental period with a focus on the "year without a summer" 1816
East Asian Monsoon controls on the inter-annual variability in precipitation isotope ratio in Japan
Investigating uncertainties in global gridded datasets of climate extremes
HadISDH land surface multi-variable humidity and temperature record for climate monitoring
Pairwise homogeneity assessment of HadISD
Ensemble meteorological reconstruction using circulation analogues of 1781–1785
HadISDH: an updateable land surface specific humidity product for climate monitoring
Reconstruction of high resolution atmospheric fields for Northern Europe using analog-upscaling
Early Portuguese meteorological measurements (18th century)
Extreme climate, not extreme weather: the summer of 1816 in Geneva, Switzerland
Inferences on weather extremes and weather-related disasters: a review of statistical methods
Benchmarking homogenization algorithms for monthly data
The construction of a Central Netherlands temperature
Early ship-based upper-air data and comparison with the Twentieth Century Reanalysis
The influence of the circulation on surface temperature and precipitation patterns over Europe
Rajmund Przybylak, Garima Singh, Przemysław Wyszyński, Andrzej Araźny, and Konrad Chmist
Clim. Past, 20, 1451–1470, https://doi.org/10.5194/cp-20-1451-2024, https://doi.org/10.5194/cp-20-1451-2024, 2024
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The purpose of this study is to recognise the nature of the climate in historical times (second half of 18th century) in Greenland. Such knowledge is important for validating Greenland temperature reconstructions based on both modelling works and various proxies. The two unique series of old meteorological observations from Greenland we used indicated that temperature in the study period was comparable to that of the early 20th-century Arctic warming but lower than that of the present day.
Stefan Brönnimann, Yuri Brugnara, and Clive Wilkinson
Clim. Past, 20, 757–767, https://doi.org/10.5194/cp-20-757-2024, https://doi.org/10.5194/cp-20-757-2024, 2024
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The early 20th century warming – the first phase of global warming in the 20th century – started from a peculiar cold state around 1910. We digitised additional ship logbooks for these years to study this specific climate state and found that it is real and likely an overlap of several climatic anomalies, including oceanic variability (La Niña) and volcanic eruptions.
Thomas Pliemon, Ulrich Foelsche, Christian Rohr, and Christian Pfister
Clim. Past, 19, 2237–2256, https://doi.org/10.5194/cp-19-2237-2023, https://doi.org/10.5194/cp-19-2237-2023, 2023
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Louis Morin consistently recorded precipitation intensity and duration between 1665 and 1713. We use these records to reconstruct precipitation totals. This reconstruction is validated by several methods and then presented using precipitation indexes. What is exceptional about this dataset is the availability of a sub-daily resolution and the low number of missing data points over the entire observation period.
Nieves Bravo-Paredes, María Cruz Gallego, Ricardo M. Trigo, and José Manuel Vaquero
Clim. Past, 19, 1397–1408, https://doi.org/10.5194/cp-19-1397-2023, https://doi.org/10.5194/cp-19-1397-2023, 2023
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We present the earliest records made in San Fernando, very close to Cádiz (SW Spain). Several previous works have already recovered a significant number of meteorological records of interest in these localities. However, more than 40 000 daily meteorological observations recorded at the Royal Observatory of the Spanish Navy (located in San Fernando) were previously unnoticed and remained neither digitized nor studied. We analyze in detail these newly recovered meteorological readings.
Stefan Brönnimann and Yuri Brugnara
Clim. Past, 19, 1435–1445, https://doi.org/10.5194/cp-19-1435-2023, https://doi.org/10.5194/cp-19-1435-2023, 2023
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We present the weather diaries of the Kirch family from 1677–1774 containing weather observations made in Leipzig and Guben and, from 1701 onward, instrumental observations made in Berlin. We publish the imaged diaries (10 445 images) and the digitized measurements (from 1720 onward). This is one of the oldest and longest meteorological records from Germany. The digitized pressure data show good agreement with neighbouring stations, highlighting their potential for weather reconstruction.
Andrew P. Schurer, Gabriele C. Hegerl, Hugues Goosse, Massimo A. Bollasina, Matthew H. England, Michael J. Mineter, Doug M. Smith, and Simon F. B. Tett
Clim. Past, 19, 943–957, https://doi.org/10.5194/cp-19-943-2023, https://doi.org/10.5194/cp-19-943-2023, 2023
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We adopt an existing data assimilation technique to constrain a model simulation to follow three important modes of variability, the North Atlantic Oscillation, El Niño–Southern Oscillation and the Southern Annular Mode. How it compares to the observed climate is evaluated, with improvements over simulations without data assimilation found over many regions, particularly the tropics, the North Atlantic and Europe, and discrepancies with global cooling following volcanic eruptions are reconciled.
Noemi Imfeld, Lucas Pfister, Yuri Brugnara, and Stefan Brönnimann
Clim. Past, 19, 703–729, https://doi.org/10.5194/cp-19-703-2023, https://doi.org/10.5194/cp-19-703-2023, 2023
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Climate reconstructions give insights into monthly and seasonal climate variability of the past few hundred years. However, to understand past extreme weather events and to relate them to impacts, for example to periods of extreme floods, reconstructions on a daily timescale are needed. Here, we present a reconstruction of 258 years of high-resolution daily temperature and precipitation fields for Switzerland covering the period 1763 to 2020, which is based on instrumental measurements.
Duncan Pappert, Mariano Barriendos, Yuri Brugnara, Noemi Imfeld, Sylvie Jourdain, Rajmund Przybylak, Christian Rohr, and Stefan Brönnimann
Clim. Past, 18, 2545–2565, https://doi.org/10.5194/cp-18-2545-2022, https://doi.org/10.5194/cp-18-2545-2022, 2022
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We present daily temperature and sea level pressure fields for Europe for the severe winter 1788/1789 based on historical meteorological measurements and an analogue reconstruction approach. The resulting reconstruction skilfully reproduces temperature and pressure variations over central and western Europe. We find intense blocking systems over northern Europe and several abrupt, strong cold air outbreaks, demonstrating that quantitative weather reconstruction of past extremes is possible.
Duncan Pappert, Yuri Brugnara, Sylvie Jourdain, Aleksandra Pospieszyńska, Rajmund Przybylak, Christian Rohr, and Stefan Brönnimann
Clim. Past, 17, 2361–2379, https://doi.org/10.5194/cp-17-2361-2021, https://doi.org/10.5194/cp-17-2361-2021, 2021
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This paper presents temperature and pressure measurements from the 37 stations of the late 18th century network of the Societas Meteorologica Palatina, in addition to providing an inventory of the available observations, most of which have been digitised. The quality of the recovered series is relatively good, as demonstrated by two case studies. Early instrumental data such as these will help to explore past climate and weather extremes in Europe in greater detail.
Gerard van der Schrier, Richard P. Allan, Albert Ossó, Pedro M. Sousa, Hans Van de Vyver, Bert Van Schaeybroeck, Roberto Coscarelli, Angela A. Pasqua, Olga Petrucci, Mary Curley, Mirosław Mietus, Janusz Filipiak, Petr Štěpánek, Pavel Zahradníček, Rudolf Brázdil, Ladislava Řezníčková, Else J. M. van den Besselaar, Ricardo Trigo, and Enric Aguilar
Clim. Past, 17, 2201–2221, https://doi.org/10.5194/cp-17-2201-2021, https://doi.org/10.5194/cp-17-2201-2021, 2021
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The 1921 drought was the most severe drought to hit Europe since the start of the 20th century. Here the climatological description of the drought is coupled to an overview of its impacts, sourced from newspapers, and an analysis of its drivers. The area from Ireland to the Ukraine was affected but hardest hit was the triangle between Brussels, Paris and Lyon. The drought impacts lingered on until well into autumn and winter, affecting water supply and agriculture and livestock farming.
Jörg Franke, Veronika Valler, Stefan Brönnimann, Raphael Neukom, and Fernando Jaume-Santero
Clim. Past, 16, 1061–1074, https://doi.org/10.5194/cp-16-1061-2020, https://doi.org/10.5194/cp-16-1061-2020, 2020
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This study explores the influence of the input data choice on spatial climate reconstructions. We compare three tree-ring-based data sets which range from small sample size, small spatial coverage and strict screening for temperature sensitivity to the opposite. We achieve the best spatial reconstruction quality by combining all available input data but rejecting records with little and uncertain climatic information and considering moisture availability as an additional growth limitation.
Hing Yim Mok, Wing Hong Lui, Dick Shum Lau, and Wang Chun Woo
Clim. Past, 16, 51–64, https://doi.org/10.5194/cp-16-51-2020, https://doi.org/10.5194/cp-16-51-2020, 2020
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Using available information from historical documents, the maximum storm surge and storm tide at Hong Kong during the passage of a typhoon in 1874 were determined by reconstructing the possible typhoon track and found to be higher than all existing records since the 1883 establishment of the Hong Kong Observatory. This reveals that a more detailed frequency analysis of extreme sea levels taking the 1874 typhoon into account is essential for realistic storm surge risk assessments in Hong Kong.
Lucas Pfister, Franziska Hupfer, Yuri Brugnara, Lukas Munz, Leonie Villiger, Lukas Meyer, Mikhaël Schwander, Francesco Alessandro Isotta, Christian Rohr, and Stefan Brönnimann
Clim. Past, 15, 1345–1361, https://doi.org/10.5194/cp-15-1345-2019, https://doi.org/10.5194/cp-15-1345-2019, 2019
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The 18th and early 19th centuries saw pronounced climatic variations with impacts on the environment and society. Although instrumental meteorological data for that period exist, only a small fraction has been the subject of research. This study provides an overview of early instrumental meteorological records in Switzerland resulting from an archive survey and demonstrates the great potential of such data. It is accompanied by the online publication of the imaged data series and metadata.
Andrew M. Lorrey and Petra R. Chappell
Clim. Past, 12, 553–573, https://doi.org/10.5194/cp-12-553-2016, https://doi.org/10.5194/cp-12-553-2016, 2016
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The meteorological diary of Reverend Richard Davis (1839–1844; 1848–1851) is the earliest continuous daily instrumental weather observation record for New Zealand. It pre-dates James Hector's meteorological network by more than 20 years, and it contains evidence that temperatures for May–August were on average colder than present day in Northland. Some weather extremes Davis also witnessed may have been more frequent in the mid-1800s relative to the modern era, including frost, ice and snow.
Y. Brugnara, R. Auchmann, S. Brönnimann, R. J. Allan, I. Auer, M. Barriendos, H. Bergström, J. Bhend, R. Brázdil, G. P. Compo, R. C. Cornes, F. Dominguez-Castro, A. F. V. van Engelen, J. Filipiak, J. Holopainen, S. Jourdain, M. Kunz, J. Luterbacher, M. Maugeri, L. Mercalli, A. Moberg, C. J. Mock, G. Pichard, L. Řezníčková, G. van der Schrier, V. Slonosky, Z. Ustrnul, M. A. Valente, A. Wypych, and X. Yin
Clim. Past, 11, 1027–1047, https://doi.org/10.5194/cp-11-1027-2015, https://doi.org/10.5194/cp-11-1027-2015, 2015
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A data set of instrumental pressure and temperature observations for the early instrumental period (before ca. 1850) is described. This is the result of a digitisation effort involving the period immediately after the eruption of Mount Tambora in 1815, combined with the collection of already available sub-daily time series. The highest data availability is therefore for the years 1815 to 1817. An analysis of pressure variability and of case studies in Europe is performed for that period.
N. Kurita, Y. Fujiyoshi, T. Nakayama, Y. Matsumi, and H. Kitagawa
Clim. Past, 11, 339–353, https://doi.org/10.5194/cp-11-339-2015, https://doi.org/10.5194/cp-11-339-2015, 2015
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This study demonstrates that the intensity of the East Asian summer and winter monsoon is the primary driver of variations of summer and winter precipitation isotopes in central Japan. Japan lies in the northeast limits of the East Asian monsoon region. Understanding the past monsoon changes in Japan is important for determining whether the isotopic variability recorded in Chinese stalagmite reflects the East Asian summer monsoon intensity or rainfall variability in the Indian summer monsoon.
R. J. H. Dunn, M. G. Donat, and L. V. Alexander
Clim. Past, 10, 2171–2199, https://doi.org/10.5194/cp-10-2171-2014, https://doi.org/10.5194/cp-10-2171-2014, 2014
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Observational data sets contain uncertainties, e.g. from the instrument accuracy, as well as from the fact that usually only a single method is used in processing. We have performed an assessment of the size of the uncertainties associated with choices in the method used. The largest effects come from changes which affect the station network or the gridding method used. However, for the temperature indices in places with many stations, these changes have little effect on the long-term behaviour.
K. M. Willett, R. J. H. Dunn, P. W. Thorne, S. Bell, M. de Podesta, D. E. Parker, P. D. Jones, and C. N. Williams Jr.
Clim. Past, 10, 1983–2006, https://doi.org/10.5194/cp-10-1983-2014, https://doi.org/10.5194/cp-10-1983-2014, 2014
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We have developed HadISDH, a new gridded global land monthly mean climate montitoring product for humidity and temperature from 1973 to then end of 2013 (updated annually) based entirely on in situ observations. Uncertainty estimates are provided. Over the period of record significant warming and increases in water vapour have taken place. The specific humidity trends have slowed since a peak in 1998 concurrent with decreasing relative humidity from 2000 onwards.
R. J. H. Dunn, K. M. Willett, C. P. Morice, and D. E. Parker
Clim. Past, 10, 1501–1522, https://doi.org/10.5194/cp-10-1501-2014, https://doi.org/10.5194/cp-10-1501-2014, 2014
P. Yiou, M. Boichu, R. Vautard, M. Vrac, S. Jourdain, E. Garnier, F. Fluteau, and L. Menut
Clim. Past, 10, 797–809, https://doi.org/10.5194/cp-10-797-2014, https://doi.org/10.5194/cp-10-797-2014, 2014
K. M. Willett, C. N. Williams Jr., R. J. H. Dunn, P. W. Thorne, S. Bell, M. de Podesta, P. D. Jones, and D. E. Parker
Clim. Past, 9, 657–677, https://doi.org/10.5194/cp-9-657-2013, https://doi.org/10.5194/cp-9-657-2013, 2013
F. Schenk and E. Zorita
Clim. Past, 8, 1681–1703, https://doi.org/10.5194/cp-8-1681-2012, https://doi.org/10.5194/cp-8-1681-2012, 2012
M. J. Alcoforado, J. M. Vaquero, R. M. Trigo, and J. P. Taborda
Clim. Past, 8, 353–371, https://doi.org/10.5194/cp-8-353-2012, https://doi.org/10.5194/cp-8-353-2012, 2012
R. Auchmann, S. Brönnimann, L. Breda, M. Bühler, R. Spadin, and A. Stickler
Clim. Past, 8, 325–335, https://doi.org/10.5194/cp-8-325-2012, https://doi.org/10.5194/cp-8-325-2012, 2012
H. Visser and A. C. Petersen
Clim. Past, 8, 265–286, https://doi.org/10.5194/cp-8-265-2012, https://doi.org/10.5194/cp-8-265-2012, 2012
V. K. C. Venema, O. Mestre, E. Aguilar, I. Auer, J. A. Guijarro, P. Domonkos, G. Vertacnik, T. Szentimrey, P. Stepanek, P. Zahradnicek, J. Viarre, G. Müller-Westermeier, M. Lakatos, C. N. Williams, M. J. Menne, R. Lindau, D. Rasol, E. Rustemeier, K. Kolokythas, T. Marinova, L. Andresen, F. Acquaotta, S. Fratianni, S. Cheval, M. Klancar, M. Brunetti, C. Gruber, M. Prohom Duran, T. Likso, P. Esteban, and T. Brandsma
Clim. Past, 8, 89–115, https://doi.org/10.5194/cp-8-89-2012, https://doi.org/10.5194/cp-8-89-2012, 2012
G. van der Schrier, A. van Ulden, and G. J. van Oldenborgh
Clim. Past, 7, 527–542, https://doi.org/10.5194/cp-7-527-2011, https://doi.org/10.5194/cp-7-527-2011, 2011
S. Brönnimann, G. P. Compo, R. Spadin, R. Allan, and W. Adam
Clim. Past, 7, 265–276, https://doi.org/10.5194/cp-7-265-2011, https://doi.org/10.5194/cp-7-265-2011, 2011
P. D. Jones and D. H. Lister
Clim. Past, 5, 259–267, https://doi.org/10.5194/cp-5-259-2009, https://doi.org/10.5194/cp-5-259-2009, 2009
Cited articles
Acquaotta, F., Fratianni, S., and Venema, V.: Assessment of parallel precipitation measurements networks in Piedmont, Italy, Int. J. Climatol., 36, 3963–3974, https://doi.org/10.1002/joc.4606, 2016.
Aguilar, E., Auer, I., Brunet, M., Peterson, T. C., and Wieringa, J.:
Guidelines on climate metadata and homogenization. World Meteorological
Organization, WMO-TD No. 1186, WCDMP No. 53, Geneva, Switzerland, p. 55, https://library.wmo.int/index.php?lvl=notice_display&id=11635#.Yk8SJ25KiFw (last access: 7 April 2022), 2003.
Allan, R., Brohan, P., Compo, G. P., Stone, R., Luterbacher, J., and Bronnimann, S.: The International Atmospheric Circulation Reconstructions
over the Earth (ACRE) initiative, B. Am. Meteorol. Soc., 92, 1421–1425, https://doi.org/10.1175/2011BAMS3218.1, 2011.
Anon: Weather watchers and their work, The Strand Magazine, London, 3,
182–189, 1892.
Ashcroft, L., Karoly, D., and Gergis, J.: Temperature variations of southeastern Australia, 1860–2011, Aust. Meteorol. Ocean., 62, 227–245, 2012.
Ashcroft, L., Trewin, B., Benoy, M., Ray, D., and Courtney, C.: The world's longest known
parallel temperature dataset: a comparison between daily Glaisher and
Stevenson Screen temperature data at Adelaide, Australia,
1887–1947, Int. J. Climatol., 42, 2670–2687, https://doi.org/10.1002/joc.7385, 2021.
Auchmann, R. and Brönnimann, S.: A physics-based correction model for
homogenizing sub-daily temperature series, J. Geophys. Res.-Atmos., 117, D17119, https://doi.org/10.1029/2012JD018067, 2012.
Bamford, A. J.: On the exposure of thermometers in Ceylon, Ceylon J. Sci., Sect. E, I, 153–167, +3 plates, 1928.
Böhm, R., Jones, P. D., Hiebl, J., Frank, D., Brunetti, M., and Maugeri, M.: The early instrumental warm-bias: a solution for long
central European temperature series 1760–2007, Climatic Change, 101, 41–67,
https://doi.org/10.1007/s10584-009-9649-4, 2010.
Brunet, M., Asin, J., Sigro, J., Banon, M., Garcia, F., Aguilar, E., Palenzuela, J., Peterson T. C., and Jones P. D.: The minimization of the screen bias from ancient Western
Mediterranean air temperature records: an exploratory statistical analysis,
Int. J. Climatol., 31, 1879–1895, https://doi.org/10.1002/joc.2192, 2011.
Buisan, S. T., Azorin-Molina, C., and Jimenez, Y.: Impact of two different
sized Stevenson screens on air temperature measurements, Int. J. Climatol.,
35, 4408–4416, https://doi.org/10.1002/joc.4287, 2015.
Burt, S.: Referee comment on “Insights from 20 years of temperature parallel measurements in Mauritius around the turn of the 20th Century” by Samuel O. Awe et al., Clim. Past Discuss., https://doi.org/10.5194/cp-2021-127-RC1, 2021.
Camuffo, D.: Errors in Early Temperature Series Arising from Changes in
Style of Measuring Time, Sampling Schedule and Number of Observations,
Climatic Change, 53, 331–352, https://doi.org/10.1023/A:1014962623762, 2002.
Chimani, B., Venema, V., Lexer, A., Andre, K., Auer, I., and Nemec, J.:
Inter-comparison of methods to homogenize daily relative humidity,
Int. J. Climatol., 38, 3106–3122, https://doi.org/10.1002/joc.5488, 2018.
Conrad, V. and Pollak, C.: Methods in climatology, Harvard University Press,
Cambridge, MA, p. 459, https://doi.org/10.4159/harvard.9780674187856, 1950.
Cook, T.: Toward a reassessment of daily temperature range trends, Eos, 97, https://doi.org/10.1029/2016EO052735, 2016.
Council of the Royal Meteorological Society: Report of the council for the
year 1883: Appendix 1, Report of the thermometer screen committee, Q. J.
Roy. Meteor. Soc., 10, 92–94, 1884.
Drummond, A. J.: Kew Observatory, Weather, 2, 69–76, 1947.
Field, J. H.: On exposures of thermometers in India, lndia Meteorol. Mem.,
XIV, 21–73, 1920.
Galvin, J. F. P.: Kew Observatory, Weather, 58, 478–484, 2003.
Gubler, S., Hunziker, S., Begert, M., Croci-Maspoli, M., Bronnimann, S., Schwierz, C., Orla, C., and Rosas, G.: The influence of station density on climate data homogenization, Int. J. Climatol., 37, 4670–4683, https://doi.org/10.1002/joc.5114, 2017.
Gulev, S. K., Thorne, P. W., Ahn, J., Dentener, F. J., Domingues, X. M., Gerland, S., Gong, D., Kaufman, D. S., Nnamachi, H. C., Quass, J., Rivera, J. A, Sathyendranath, S., Smith, S. L., Trewin, B., Von Schuckmann, K., and Vose, R. S.: Changing State of the Climate System, in: Climate Change
2021: The Physical Science Basis, Contribution of Working Group I to the
Sixth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Masson-Delmotte, V., Zhai, P., Pirani, A., Connors, S. L., Pean, C., Berger, S., Caud, N., Chen, Y., Goldfarb, L., Gomis, M. I., Huang, M., Leitzell, K., Lonnoy, E., Matthews, J. B. R., Maycock, T. K., Waterfield, T., Yelekci, O., Yu, R., and Zhou, B., Cambridge University Press, Cambridge, UK, New York, NY, USA, in press, 2021.
Hartmann, D. L., Klein Tank, A. M. G., Rusticucci, M., Alexander, L. V., Bronnimann, S., Abdul-Rahman Charabi, Y., Dentener, F. J., Dlugokencky, E. J., Easterling, D. R., Kaplan, A., Sode, B. J., Thorne, P. W., Wild, M., and Zhai, P.: Observations: Atmosphere and Surface, in: Climate
Change 2013: The Physical Science Basis. Contribution of Working Group I to
the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S.
K., Boschung, J., Nauels, A., Xia, Y., Bex, V., and Midgley, P. M., Cambridge University Press, Cambridge, United Kingdom, New York, NY, USA, 159–254,
https://doi.org/10.1017/CBO9781107415324.008, 2013.
Hawkins, E., Ortega, P., Suckling, E., Schurer, A., Hegerl, G., Jones, P., Joshi, M., Osborn, T. J., Masson-Delmotte, V., Mignot, J., Thorne, P., and van Oldenborgh, G. J.: Estimating Changes in Global Temperature since the
Preindustrial Period, B. Am. Meteorol. Soc., 98, 1841–1856, https://doi.org/10.1175/BAMS-D-16-0007.1, 2017.
Hubbard, K. G., Lin, X., and Walter-Shea, E. A.: The Effectiveness of the ASOS, MMTS, Gill, and CRS Air Temperature Radiation Shields, J. Atmos. Ocean.
Tech., 18, 851–864, https://doi.org/10.1175/1520-0426(2001)018<0851:TEOTAM>2.0.CO;2, 2001.
Kaspar, F., Hannak, L., and Schreiber, K.-J.: Climate reference stations in Germany: Status, parallel measurements and homogeneity of temperature time series, Adv. Sci. Res., 13, 163–171, https://doi.org/10.5194/asr-13-163-2016, 2016.
Knowles Middleton, W. E.: A history of the thermometer and its uses in
meteorology, The Johns Hopkins Press, Baltimore, https://doi.org/10.1002/qj.49709440024, 1966.
Lancombe, M., Bousri, D, Leroy, M., and Mezred, M.: Instruments and observing methods report no. 106: WMO
field intercomparison of thermometer screens/shields and humidity measuring
instruments, Ghardaïa, Algeria, November 2008–October 2009.
Instruments and Observing Methods Report No. 106, WMO/TD-No. 1579, Geneva,
Switzerland, https://library.wmo.int/index.php?lvl=notice_display&id=15530#.YlSX327MJzU (last access: 11 April 2022), 2011.
Lin, X., Hubbard, K. G., and Walter-Shea, E. A.: Radiation loading model for
evaluating air temperature errors with a non-aspirated radiation shield,
T. ASAE, 44, 1299–1306, 2001.
Lindau, R. and Venema, V. K. C.: The joint influence of break and noise variance on the break detection capability in time series homogenization, Adv. Stat. Clim. Meteorol. Oceanogr., 4, 1–18, https://doi.org/10.5194/ascmo-4-1-2018, 2018a.
Lindau, R. and Venema, V. K. C.: On the Reduction of Trend Errors by the ANOVA Joint Correction Scheme Used in Homogenization of Climate Station Records, Int. J. Climatol., 38, 5255–5271, https://doi.org/10.1002/joc.5728, 2018b.
Lindén, J., Grimmond, C. S. B., and Esper, J.: Urban warming in villages, Adv. Sci. Res., 12, 157–162, https://doi.org/10.5194/asr-12-157-2015, 2015.
Mahony, M.: The “genie of the storm”: Cyclonic reasoning and the spaces of
weather observation in the southern Indian Ocean, 1851–1925, Brit. J. Hist. Sci., 51, 607–633, https://doi.org/10.1017/S0007087418000766, 2018.
Mawley, E.: Report on temperatures in two different patterns of Stevenson
screens, Q. J. Roy. Meteor. Soc., 10, 1–7, 1884.
Menne, M. J. and Williams, C. N.: Homogenization of Temperature
Series via Pairwise Comparisons, J. Climate, 22, 1700–1717, https://doi.org/10.1175/2008JCLI2263.1, 2009.
Michaud, E.: Meteorologist's profile – Charles Meldrum, Weather, 55, 15–17,
2000.
Nicholls, N., Tapp, R., Burrows, K., and Richards, D.: Historical thermometer
exposures in Australia, Int. J. Climatol., 16, 705–710, https://doi.org/10.1002/(SICI)1097-0088(199606)16:6<705::AID-JOC30>3.0.CO;2-S,
1996.
Noone, S., Atkinson, C., Berry, D. I., Dunn, R. J. H., Freeman, E., Perez Gonzalez, I., Kennedy, J. J., Kent, E. C., Kettle, A., McNeill, S., Menne, M., Stephens, A., Thorne, P. W., Tucker, W., Voces, C., and Willett, K. M.: Progress towards a holistic land and marine surface
meteorological database and a call for additional contributions, Geosci. Data J., 8, 103–120, https://doi.org/10.1002/gdj3.109, 2021.
Osborn, T. J., Jones, P. D., Lister, D. H., Morice, C. P., Simpson, I. R., Winn, J. P., Hogan, E., and Harris, I. C.: Land surface air temperature variations across the globe updated to 2019: the CRUTEM5 dataset, J. Geophys. Res.-Atmos., 126, e2019JD032352, https://doi.org/10.1029/2019JD032352, 2021.
Parker, D. E.: Effects of changing exposure of thermometers at land stations,
Int. J. Climatol., 14, 1–31, https://doi.org/10.1002/joc.3370140102, 1994.
Quayle, R. G., Easterling, D. R., Karl, T. R., and Hughes, P. Y.: Effects of Recent Thermometer Changes in the
Cooperative Station Network, B. Am. Meteorol. Soc., 72, 1718–23, http://www.jstor.org/stable/26228755 (last access: 11 April 2022), 1991.
Rennie, J. J., Lawrimore, J. H., Gleason, B. E., Thorne, P. W., Moricce, C. P., Menne, M. J., Williams, C. N., Gambi de Almedia, W., Christy, J. R., Flannery, M., Ishihara, M., Kamiguchi, K., Klein Tank, A. M. G., Mhanda, A., Lister, D. H., Razuvaev, V., Renom, M., Rusticucci, M., Tandy, J., Worley, S. J., Venema, V., Angel, W., Brunet, M., Dattore, B., Diamond, H., Lazzara, M. A., Le Blancq, F., Luterbacher, J., Machel, H., Revadekar, J., Vose, R. S., and Yin, X.: The international surface temperature initiative
global land surface databank: monthly temperature data release description
and methods, Geosci. Data J., 1, 75–102, https://doi.org/10.1002/gdj3.8, 2014.
Rouphail, R. M.: Cyclonic ecology: Sugar, Cyclone Science and the Limits of
Empire in Mauritius and the Indian Ocean World, 1870s–1930s, Isis, 110,
48–68, 2019.
Royal Society: Report of the Meteorological Committee of the Royal Society
for the year ending 31 December 1867, 27–54, HMSO, 1868.
Sapsford, H.: Exposure of thermometers in Samoa. N. 2, J. Sci. Technol, 22, 136B–143B, 1940.
Stevenson, T. C. E.: New Description of Box for Holding Thermometers, Journal
of the Scottish Meteorological Society, 1, 122 pp., June 1864.
Thorne, P. W.: Mauritius Royal Alfred Observatory parallel temperature measurements 1884–1903, original file in ∘Fahrenheit, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.935684, 2021a.
Thorne, P. W.: Mauritius Royal Alfred Observatory parallel temperature measurements 1884–1903, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.935683, 2021b.
Thorne, P. W.: Mauritius analysis code, Zenodo [code], https://doi.org/10.5281/zenodo.6451187, 2022.
Thorne, P. W., Donat, M. G., Dunn, R. J. H., Williams, C. N., Alexander, L. V., Caesar, J., Durre, I., Harris, I., Hausfather, Z., Jones, P. D., Menne, M. J., Rohde, R., Vose, R. S., Davy, R., Klein-Tank, A. M. G., Lawrimore, J. H., Peterson, T. C., and Rennie, J. J.: Reassessing changes in Diurnal Temperature Range:
Intercomparison and evaluation of existing global dataset estimates,
J. Geophys. Res.-Atmos., 121, 5138–5158, https://doi.org/10.1002/2015JD024584, 2016.
Thorne, P. W., Allan, R. J., Ashcroft, L., Brohan, P., Dunn, R. J. H., Menne, M. J., Pearce, P. R., Picas, J., Willett, K. M., Benoy, M., Bronnimann, S., Canziani, P. O., Coll, J., Crouthamel, R., Compo, G. P., Cuppett, D., Curley, M., Duffy, C., Gillespie, I., Guijarro, J., Jourdain, S., Kent, E. C., Kubota, H., Legg, T. P., Li, G., Matsumoto, J., Murphy, C., Rayner, N. A., Rennie, J. J., Rustemeir, E., Slivinski, L. C., Slonosky, V., Squintu, A., Tinz, B., Valente, M. A., Walsh, S., Wang, X. L., Westcott, N., Wood, K., Woodruff, S. D., and Worley, S. J.: Towards an integrated set of surface meteorological observations for climate science and applications, B. Am. Meteorol. Soc., 98, 2689–2702, https://doi.org/10.1175/BAMS-D-16-0165.1, 2017.
Trewin, B.: Exposure, instrumentation, and observing practice effects on
land temperature measurements, WIREs Clim. Change, 1, 490–506, https://doi.org/10.1002/wcc.46, 2010.
Venema, V. K. C., Auchmann, R., Aguilar, E., Auer, I., Azorin-Molina, C., Brandsma, T., Brunetti, M., Delitala, A., Dienst, M., Domonkos, P., Erell, E., Gilabert, A., Lin, X., Linden, J., Lundstadt, E., Milewska, E., Nordli, O., Prohom, M, Rennie, J., Stepanek, P., Trewin, B., Vincent, L., Willett, K., and Wolff, M.: A global database with parallel measurements to
study non-climatic changes, Joint 25th AMOS National Conference and 12th
International Conference for Southern Hemisphere Meteorology and
Oceanography, UNSW, Sydney, Australia, 5–9 February 2018, AMOS-ICSHMO 2018, https://uni-bonn.viven.org//articles/2018/2018_AMOS_POST.pdf (last access: 12 April 2022), 2018.
Venema, V. K. C., Trewin, B., Wang, X. L., Szentimrey, T, Lakatos, M., Aguilar, E., Auer, I., Guijarro, J. A., Menne, M., Oria, C., Louamba, W. S. R. L., Rasul, G., Argriou, A., Hechler, P., Vertacnik, G., and Yousef, Y.: Guidelines on Homogenization, WMO report WMO-No. 1245, Geneva, Switzerland, ISBN 978-92-63-11245-3, 2020.
Williams, C. N., Menne, M. J., and Thorne, P. W.: Benchmarking the performance of pairwise homogenization of surface temperatures in the United States, J. Geophys. Res., 117, D05116, https://doi.org/10.1029/2011JD016761, 2012.
WMO: WMO Guidelines on the Calculation of Climate Normals, WMO,
https://library.wmo.int/index.php?lvl=notice_display&id=20130#.Ye_Dh1j7RzU (last access: 25 January 2022), 2017.
Yosef, Y., Aguilar, E., and Alpert, P.: Detecting and adjusting artificial biases of long-term temperature records in Israel, Int. J. Climatol., 38, 3273–3289, https://doi.org/10.1002/joc.5500, 2018.
Short summary
We unearth and analyse 2 decades of highly valuable measurements made on Mauritius at the Royal Alfred Observatory, where several distinct thermometer combinations were in use and compared, at the turn of the 20th century. This series provides unique insights into biases in early instrumental temperature records. Differences are substantial and for some instruments exhibit strong seasonality. This reinforces the critical importance of understanding early instrumental series biases.
We unearth and analyse 2 decades of highly valuable measurements made on Mauritius at the Royal...
