Articles | Volume 19, issue 8
https://doi.org/10.5194/cp-19-1653-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/cp-19-1653-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
14 Aug 2023
Research article |
| 14 Aug 2023
| 14 Aug 2023
Climatology of the Mount Brown South ice core site in East Antarctica: implications for the interpretation of a water isotope record
Sarah L. Jackson
CORRESPONDING AUTHOR
Research School of Earth Sciences, Australian National University,
Canberra ACT 2601, Australia
Australian Centre for Excellence in Antarctic Science, Australian
National University, Canberra ACT 2601, Australia
ARC Centre of Excellence for Climate Extremes, Australian National
University, Canberra ACT 2601, Australia
Tessa R. Vance
Australian Antarctic Program Partnership, Institute for Marine & Antarctic Studies, University of Tasmania, Hobart TAS 7004, Australia
Camilla Crockart
Australian Antarctic Program Partnership, Institute for Marine & Antarctic Studies, University of Tasmania, Hobart TAS 7004, Australia
Andrew Moy
Department of Climate Change, Energy, the Environment and Water, Australian Antarctic Division, Kingston TAS 7050, Australia
Australian Antarctic Program Partnership, Institute for Marine & Antarctic Studies, University of Tasmania, Hobart TAS 7004, Australia
Christopher Plummer
Australian Antarctic Program Partnership, Institute for Marine & Antarctic Studies, University of Tasmania, Hobart TAS 7004, Australia
Nerilie J. Abram
Research School of Earth Sciences, Australian National University,
Canberra ACT 2601, Australia
Australian Centre for Excellence in Antarctic Science, Australian
National University, Canberra ACT 2601, Australia
ARC Centre of Excellence for Climate Extremes, Australian National
University, Canberra ACT 2601, Australia
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Yaowen Zheng, Lenneke M. Jong, Steven J. Phipps, Jason L. Roberts, Andrew D. Moy, Mark A. J. Curran, and Tas D. van Ommen
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South West Western Australia has experienced a prolonged drought in recent decades. The causes of this drought are unclear. We use an ice core from East Antarctica to reconstruct changes in rainfall over the past 2000 years. We find that the current drought is unusual, with only two other droughts of similar severity having occurred during this period. Climate modelling shows that greenhouse gas emissions during the industrial era are likely to have contributed to the recent drying trend.
Camilla K. Crockart, Tessa R. Vance, Alexander D. Fraser, Nerilie J. Abram, Alison S. Criscitiello, Mark A. J. Curran, Vincent Favier, Ailie J. E. Gallant, Christoph Kittel, Helle A. Kjær, Andrew R. Klekociuk, Lenneke M. Jong, Andrew D. Moy, Christopher T. Plummer, Paul T. Vallelonga, Jonathan Wille, and Lingwei Zhang
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We present preliminary analyses of the annual sea salt concentrations and snowfall accumulation in a new East Antarctic ice core, Mount Brown South. We compare this record with an updated Law Dome (Dome Summit South site) ice core record over the period 1975–2016. The Mount Brown South record preserves a stronger and inverse signal for the El Niño–Southern Oscillation (in austral winter and spring) compared to the Law Dome record (in summer).
Anna L. Flack, Anthony S. Kiem, Tessa R. Vance, Carly R. Tozer, and Jason L. Roberts
Hydrol. Earth Syst. Sci., 24, 5699–5712, https://doi.org/10.5194/hess-24-5699-2020, https://doi.org/10.5194/hess-24-5699-2020, 2020
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Palaeoclimate information was analysed for eastern Australia to determine when (and where) there was agreement about the timing of wet and dry epochs in the pre-instrumental period (1000–1899). The results show that instrumental records (~1900–present) underestimate the full range of rainfall variability that has occurred. When coupled with projected impacts of climate change and growing demands, these results highlight major challenges for water resource management and infrastructure.
Bronwen L. Konecky, Nicholas P. McKay, Olga V. Churakova (Sidorova), Laia Comas-Bru, Emilie P. Dassié, Kristine L. DeLong, Georgina M. Falster, Matt J. Fischer, Matthew D. Jones, Lukas Jonkers, Darrell S. Kaufman, Guillaume Leduc, Shreyas R. Managave, Belen Martrat, Thomas Opel, Anais J. Orsi, Judson W. Partin, Hussein R. Sayani, Elizabeth K. Thomas, Diane M. Thompson, Jonathan J. Tyler, Nerilie J. Abram, Alyssa R. Atwood, Olivier Cartapanis, Jessica L. Conroy, Mark A. Curran, Sylvia G. Dee, Michael Deininger, Dmitry V. Divine, Zoltán Kern, Trevor J. Porter, Samantha L. Stevenson, Lucien von Gunten, and Iso2k Project Members
Earth Syst. Sci. Data, 12, 2261–2288, https://doi.org/10.5194/essd-12-2261-2020, https://doi.org/10.5194/essd-12-2261-2020, 2020
Cited articles
Adusumilli, S., A. Fish, M., Fricker, H. A., and Medley, B.: Atmospheric
River Precipitation Contributed to Rapid Increases in Surface Height of the
West Antarctic Ice Sheet in 2019, Geophys. Res. Lett., 48, e2020GL091076, https://doi.org/10.1029/2020GL091076, 2021.
Allison, I. and Heil, P.: Surface meteorological data from a network of automatic weather stations at a number of Antarctic sites and sub-Antarctic sites, Ver. 1, Australian Antarctic Data Centre [data set], https://data.aad.gov.au/metadata/records/antarctic_aws (last access: 27 July 2021), 2001.
Arndt, J. E., Schenke, H. W., Jakobsson, M., Nitsche, F. O., Buys, G., Goleby, B., Rebesco, M., Bohoyo, F., Hong, J., Black, J., Greku, R.,
Udintsev, G., Barrios, F., Reynoso-Peralta, W., Taisei, M., and Wigley, R.:
The International Bathymetric Chart of the Southern Ocean (IBCSO) Version 1.0 – A new bathymetric compilation covering circum-Antarctic waters, Geophys. Res. Lett., 40, 3111–3117, https://doi.org/10.1002/GRL.50413, 2013.
Augustin, L., Barbante, C., Barnes, P. R. F., Barnola, J. M., Bigler, M.,
Castellano, E., Cattani, O., Chappellaz, J., Dahl-Jensen, D., Delmonte, B.,
Dreyfus, G., Durand, G., Falourd, S., Fischer, H., Flückiger, J., Hansson, M. E., Huybrechts, P., Jugie, G., Johnsen, S. J., Jouzel, J., Kaufmann, P., Kipfstuhl, J., Lambert, F., Lipenkov, V. Y., Littot, G. C.,
Longinelli, A., Lorrain, R., Maggi, V., Masson-Delmotte, V., Miller, H.,
Mulvaney, R., Oerlemans, J., Oerter, H., Orombelli, G., Parrenin, F., Peel,
D. A., Petit, J. R., Raynaud, D., Ritz, C., Ruth, U., Schwander, J., Siegenthaler, U., Souchez, R., Stauffer, B., Steffensen, J. P., Stenni, B.,
Stocker, T. F., Tabacco, I. E., Udisti, R., van de Wal, R. S. W., van den
Broeke, M., Weiss, J., Wilhelms, F., Winther, J. G., Wolff, E. W., and
Zucchelli, M.: Eight glacial cycles from an Antarctic ice core, Nature, 429, 623–628, https://doi.org/10.1038/nature02599, 2004.
Casado, M., Landais, A., Masson-Delmotte, V., Genthon, C., Kerstel, E., Kassi, S., Arnaud, L., Picard, G., Prie, F., Cattani, O., Steen-Larsen, H. C., Vignon, E., and Cermak, P.: Continuous measurements of isotopic composition of water vapour on the East Antarctic Plateau, Atmos. Chem. Phys., 16, 8521–8538, https://doi.org/10.5194/acp-16-8521-2016, 2016.
Casado, M., Landais, A., Picard, G., Münch, T., Laepple, T., Stenni, B.,
Dreossi, G., Ekaykin, A., Arnaud, L., Genthon, C., Touzeau, A., Masson-Delmotte, V., and Jouzel, J.: Archival processes of the water stable
isotope signal in East Antarctic ice cores, The Cryosphere, 12, 1745–1766,
https://doi.org/10.5194/tc-12-1745-2018, 2018.
Casado, M., Münch, T., and Laepple, T.: Climatic information archived in
ice cores: Impact of intermittency and diffusion on the recorded isotopic
signal in Antarctica, Clim. Past, 16, 1581–1598, https://doi.org/10.5194/cp-16-1581-2020, 2020.
Crockart, C. K.: El Niño Southern Oscillation signal in a new East Antarctic ice core, Mount Brown South, Ver. 1, Australian Antarctic Data Centre [data set], https://doi.org/10.4225/15/58eedf6812621, 2021.
Crockart, C. K., Vance, T. R., Fraser, A. D., Abram, N. J., Criscitiello, A.
S., Curran, M. A., Favier, V., Gallant, A. J., Kittel, C., Kjaer, H. A.,
Klekociuk, A. R., Jong, L. M., Moy, A. D., Plummer, C. T., Vallelonga, P. T., Wille, J., and Zhang, L.: El Niño-Southern Oscillation signal in a new East Antarctic ice core, Mount Brown South, Clim. Past, 17, 1795–1818,
https://doi.org/10.5194/cp-17-1795-2021, 2021.
Dansgaard, W.: Stable isotopes in precipitation, Tellus, 16, 436–468, https://doi.org/10.1111/j.2153-3490.1964.tb00181.x, 1964.
Delmotte, M., Masson, V., Jouzel, J., and Morgan, V. I.: A seasonal deuterium excess signal at Law Dome, coastal eastern Antarctica: A southern ocean signature, J. Geophys. Res.-Atmos., 105, 7187–7197, https://doi.org/10.1029/1999JD901085, 2000.
Ekaykin, A. A., Vladimirova, D. O., Lipenkov, V. Y., and Masson-Delmotte, V.: Climatic variability in Princess Elizabeth Land (East Antarctica) over the last 350 years, Clim. Past, 13, 61–71, https://doi.org/10.5194/cp-13-61-2017, 2017.
Fisher, D. A., Reeh, N., and Clausen, H. B.: Stratigraphic Noise in Time
Series Derived from Ice Cores, Ann. Glaciol., 7, 76–83,
https://doi.org/10.3189/S0260305500005942, 1985.
Foster, A. F. M., Curran, M. A. J., Smith, B. T., van Ommen, T. D., and Morgan, V. I.: Covariation of sea ice and methanesulphonic acid in Wilhelm II Land, East Antarctica, Ann. Glaciol., 44, 429–432, https://doi.org/10.3189/172756406781811394, 2006.
Fretwell, P., Pritchard, H. D., Vaughan, D. G., Bamber, J. L., Barrand, N. E., Bell, R., Bianchi, C., Bingham, R. G., Blankenship, D. D., Casassa, G.,
Catania, G., Callens, D., Conway, H., Cook, A. J., Corr, H. F. J., Damaske,
D., Damm, V., Ferraccioli, F., Forsberg, R., Fujita, S., Gim, Y., Gogineni,
P., Griggs, J. A., Hindmarsh, R. C. A., Holmlund, P., Holt, J. W., Jacobel,
R. W., Jenkins, A., Jokat, W., Jordan, T., King, E. C., Kohler, J., Krabill,
W., Riger-Kusk, M., Langley, K. A., Leitchenkov, G., Leuschen, C., Luyendyk,
B. P., Matsuoka, K., Mouginot, J., Nitsche, F. O., Nogi, Y., Nost, O. A.,
Popov, S. V., Rignot, E., Rippin, D. M., Rivera, A., Roberts, J., Ross, N.,
Siegert, M. J., Smith, A. M., Steinhage, D., Studinger, M., Sun, B., Tinto,
B. K., Welch, B. C., Wilson, D., Young, D. A., Xiangbin, C., and Zirizzotti,
A.: Bedmap2: Improved ice bed, surface and thickness datasets for Antarctica, The Cryosphere, 7, 375–393, https://doi.org/10.5194/tc-7-375-2013, 2013.
Gorodetskaya, I. V., Tsukernik, M., Claes, K., Ralph, M. F., Neff, W. D., and Van Lipzig, N. P. M.: The role of atmospheric rivers in anomalous snow
accumulation in East Antarctica, Geophys. Res. Lett., 41, 6199–6206,
https://doi.org/10.1002/2014GL060881, 2014.
Greene, C. A., Gwyther, D. E., and Blankenship, D. D.: Antarctic Mapping
Tools for Matlab, Comput. Geosci., 104, 151–157, https://doi.org/10.1016/J.CAGEO.2016.08.003, 2017.
Groot Zwaaftink, C. D., Cagnati, A., Crepaz, A., Fierz, C., MacElloni, G.,
Valt, M., and Lehning, M.: Event-driven deposition of snow on the Antarctic
Plateau: Analyzing field measurements with SNOWPACK, The Cryosphere, 7, 333–347, https://doi.org/10.5194/tc-7-333-2013, 2013.
Hersbach, H., Bell, B., Berrisford, P., Biavati, G., Horányi, A., Muñoz Sabater, J., Nicolas, J., Peubey, C., Radu, R., Rozum, I., Schepers, D., Simmons, A., Soci, C., Dee, D., and Thépaut, J.-N.: ERA5 hourly data on single levels from 1940 to present, Copernicus Climate Change Service (C3S) Climate Data Store (CDS) [data set], https://doi.org/10.24381/cds.adbb2d47, 2023a.
Hersbach, H., Bell, B., Berrisford, P., Biavati, G., Horányi, A., Muñoz Sabater, J., Nicolas, J., Peubey, C., Radu, R., Rozum, I., Schepers, D., Simmons, A., Soci, C., Dee, D., and Thépaut, J.-N.: ERA5 hourly data on pressure levels from 1940 to present, Copernicus Climate Change Service (C3S) Climate Data Store (CDS) [data set], https://doi.org/10.24381/cds.bd0915c6, 2023b.
IPICS: International Priorities and Challenges in Antarctic Ice Core
Science: A Contribution to the COMNAP Antarctic Roadmap Challenges, https://static1.squarespace.com/static/61073506e9b0073c7eaaf464/t/6114888d0d80f776ba42287b/1628735630121/IPICS_Whitepaper_6August2015.pdf (last access: 15 April 2023), 2015.
Johnsen, S. J., Hansen, S. B., Sheldon, S. G., Dahl-Jensen, D., Steffensen,
J. P., Augustin, L., Journé, P., Alemany, O., Rufli, H., Schwander, J.,
Azuma, N., Motoyama, H., Popp, T., Talalay, P., Thorsteinsson, T., Wilhelms,
F., and Zagorodnov, V.: The Hans Tausen drill: design, performance, further
developments and some lessons learned, Ann. Glaciol., 47, 89–98,
https://doi.org/10.3189/172756407786857686, 2007.
Jones, J. M., Gille, S. T., Goosse, H., Abram, N. J., Canziani, P. O., Charman, D. J., Clem, K. R., Crosta, X., De Lavergne, C., Eisenman, I., England, M. H., Fogt, R. L., Frankcombe, L. M., Marshall, G. J., Masson-Delmotte, V., Morrison, A. K., Orsi, A. J., Raphael, M. N., Renwick,
J. A., Schneider, D. P., Simpkins, G. R., Steig, E. J., Stenni, B., Swingedouw, D., and Vance, T. R.: Assessing recent trends in high-latitude
Southern Hemisphere surface climate, Nat. Clim. Change, 6, 917–926, https://doi.org/10.1038/nclimate3103, 2016.
Jones, P. D. and Lister, D. H.: Antarctic near-surface air temperatures
compared with ERA-Interim values since 1979, Int. J. Climatol., 35, 1354–1366, https://doi.org/10.1002/JOC.4061, 2015.
Jouzel, J., Alley, R. B., Cuffey, K. M., Dansgaard, W., Grootes, P., Hoffmann, G., Johnsen, S. J., Koster, R. D., Peel, D., Shuman, C. A., Stievenard, M., Stuiver, M., and White, J.: Validity of the temperature
reconstruction from water isotopes in ice cores, J. Geophys. Res.-Oceans, 102, 26471–26487, https://doi.org/10.1029/97JC01283, 1997.
Kalnay, E., Kanamitsu, M., Kistler, R., Collins, W., Deaven, D., Gandin, L., Iredell, M., Saha, S., White, G., Woollen, J., Zhu, Y., Chelliah, M., Ebisuzaki, W., Higgins, W., Janowiak, J., Mo, K. C., Ropelewski, C., Wang, J., Leetmaa, A., Reynolds, R., Jenne, R., and Joseph, D.: The NCEP/NCAR 40-Year Reanalysis Project, B. Am. Meteorol. Soc., 77, 437–472, https://doi.org/10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2, 1996.
Kaufmann, P., Fundel, F., Fischer, H., Bigler, M., Ruth, U., Udisti, R.,
Hansson, M., de Angelis, M., Barbante, C., Wolff, E. W., Hutterli, M., and
Wagenbach, D.: Ammonium and non-sea salt sulfate in the EPICA ice cores as
indicator of biological activity in the Southern Ocean, Quaternary Sci. Rev., 29, 313–323, https://doi.org/10.1016/J.QUASCIREV.2009.11.009, 2010.
Kittel, C., Amory, C., Agosta, C., and Fettweis, X.: MARv3.10 outputs: What is the Surface Mass Balance of Antarctica? An Intercomparison of Regional Climate Model Estimates, Zenodo [data set], https://doi.org/10.5281/zenodo.5195636, 2020.
Li, X., Cai, W., Meehl, G. A., Chen, D., Yuan, X., Raphael, M., Holland, D.
M., Ding, Q., Fogt, R. L., Markle, B. R., Wang, G., Bromwich, D. H., Turner,
J., Xie, S.-P., Steig, E. J., Gille, S. T., Xiao, C., Wu, B., Lazzara, M.
A., Chen, X., Stammerjohn, S., Holland, P. R., Holland, M. M., Cheng, X.,
Price, S. F., Wang, Z., Bitz, C. M., Shi, J., Gerber, E. P., Liang, X., Goosse, H., Yoo, C., Ding, M., Geng, L., Xin, M., Li, C., Dou, T., Liu, C.,
Sun, W., Wang, X., and Song, C.: Tropical teleconnection impacts on Antarctic climate changes, Nat. Rev. Earth Environ. 2021, 1–19, https://doi.org/10.1038/s43017-021-00204-5, 2021.
Lorius, C., Merlivat, L., and Hagemann, R.: Variation in the mean deuterium
content of precipitations in Antarctica, J. Geophys. Res., 74, 7027–7031,
https://doi.org/10.1029/JC074I028P07027, 1969.
Markle, B. R. and Steig, E. J.: Improving temperature reconstructions from
ice-core water-isotope records, Clim. Past, 18, 1321–1368,
https://doi.org/10.5194/cp-18-1321-2022, 2022.
Markle, B. R., Bertler, N. A. N., Sinclair, K. E., and Sneed, S. B.: Synoptic variability in the Ross Sea region, Antarctica, as seen from back-trajectory modeling and ice core analysis, J. Geophys. Res., 117, D02113, https://doi.org/10.1029/2011JD016437, 2012.
Masson-Delmotte, V., Hou, S., Ekaykin, A., Jouzel, J., Aristarain, A.,
Bernardo, R. T., Bromwich, D., Cattani, O., Delmotte, M. M., Falourd, S.,
Frezzotti, M., Gallée, H., Genoni, L., Isaksson, E., Landais, A., Helsen, M. M., Hoffmann, G., Lopez, J., Morgan, V., Motoyama, H., Noone, D., Oerter, H., Petit, J. R., Royer, A., Uemura, R., Schmidt, G. A., Schlosser, E., Simões, J. C., Steig, E. J., Stenni, B., Stievenard, M., Van Den Broeke, M. R., Van De Wal, R. S. W., Van De Berg, W. J., Vimeux, F., and White, J. W. C.: A Review of Antarctic Surface Snow Isotopic Composition: Observations, Atmospheric Circulation, and Isotopic Modeling, J. Climate, 21, 3359–3387, https://doi.org/10.1175/2007JCLI2139.1, 2008.
McMorrow, A., Van Ommen, T., Morgan, V., and Curran, M. A. J.: Ultra-high-resolution seasonality of trace-ion species and oxygen isotope
ratios in Antarctic firn over four annual cycles, Ann. Glaciol., 39, 34–40,
https://doi.org/10.3189/172756404781814609, 2004.
Münch, T. and Laepple, T.: What climate signal is contained in
decadal-to centennial-scale isotope variations from Antarctic ice cores?, Clim. Past, 14, 2053–2070, https://doi.org/10.5194/cp-14-2053-2018, 2018.
Münch, T., Kipfstuhl, S., Freitag, J., Meyer, H., and Laepple, T.:
Regional climate signal vs. local noise: A two-dimensional view of water
isotopes in Antarctic firn at Kohnen Station, Dronning Maud Land, Clim.
Past, 12, 1565–1581, https://doi.org/10.5194/cp-12-1565-2016, 2016.
Münch, T., Werner, M., and Laepple, T.: How precipitation intermittency
sets an optimal sampling distance for temperature reconstructions from
Antarctic ice cores, Clim. Past, 17, 1587–1605, https://doi.org/10.5194/cp-17-1587-2021, 2021.
Nakamura, H. and Shimpo, A.: Seasonal Variations in the Southern Hemisphere
Storm Tracks and Jet Streams as Revealed in a Reanalysis Dataset, J. Climate,
17, 1828–1844, 2004.
NCAR: ARTMIP Tier 2 Reanalysis catalogue, NCAR [data set], https://doi.org/10.26024/rawv-yx53, 2023.
Persson, A., Langen, P. L., Ditlevsen, P., and Vinther, B. M.: The influence
of precipitation weighting on interannual variability of stable water isotopes in Greenland, J. Geophys. Res.-Atmos., 116, 20120, https://doi.org/10.1029/2010JD015517, 2011.
Pohl, B., Favier, V., Wille, J., Udy, D. G., Vance, T. R., Pergaud, J.,
Dutrievoz, N., Blanchet, J., Kittel, C., Amory, C., Krinner, G., and Codron,
F.: Relationship Between Weather Regimes and Atmospheric Rivers in East
Antarctica, J. Geophys. Res.-Atmos., 126, e2021JD035294, https://doi.org/10.1029/2021JD035294, 2021.
Pook, M. and Gibson, T.: Atmospheric blocking and storm tracks during SOP-1
of the FROST Project, June Special Edition, Aust. Meteorol. Mag., 48, 51–60, 1999.
Ritter, F., Christian Steen-Larsen, H., Werner, M., Masson-Delmotte, V., Orsi, A., Behrens, M., Birnbaum, G., Freitag, J., Risi, C., and Kipfstuhl, S.: Isotopic exchange on the diurnal scale between near-surface snow and lower atmospheric water vapor at Kohnen station, East Antarctica, The Cryosphere, 10, 1647–1663, https://doi.org/10.5194/tc-10-1647-2016, 2016.
Roberts, J., Plummer, C., Vance, T., van Ommen, T., Moy, A., Poynter, S.,
Treverrow, A., Curran, M., and George, S.: A 2000-year annual record of snow
accumulation rates for Law Dome, East Antarctica, Clim. Past, 11, 697–707,
https://doi.org/10.5194/cp-11-697-2015, 2015.
Scarchilli, C., Frezzotti, M., and Ruti, P. M.: Snow precipitation at four
ice core sites in East Antarctica: Provenance, seasonality and blocking
factors, Clim. Dynam., 37, 2107–2125, https://doi.org/10.1007/s00382-010-0946-4, 2011.
Servettaz, A. P. M., Orsi, A. J., Curran, M. A. J., Moy, A. D., Landais, A.,
Agosta, C., Holly, V., Winton, L., Touzeau, A., Mcconnell, J. R., Werner, M., and Baroni, M.: Snowfall and Water Stable Isotope Variability in East Antarctica Controlled by Warm Synoptic Events, J. Geophys. Res.-Atmos., 125,
e2020JD032863, https://doi.org/10.1029/2020JD032863, 2020.
Sheldon, S. G., Popp, T. J., Hansen, S. B., Hedegaard, T. M., and Mortensen,
C.: A new intermediate-depth ice-core drilling system, Ann. Glaciol., 55,
271–284, https://doi.org/10.3189/2014AOG68A038, 2014.
Sime, L. C., Marshall, G. J., Mulvaney, R., and Thomas, E. R.: Interpreting
temperature information from ice cores along the Antarctic Peninsula: ERA40
analysis, Geophys. Res. Lett., 36, 18801, https://doi.org/10.1029/2009GL038982, 2009.
Sinclair, K. E., Bertler, N. A. N., Trompetter, W. J., and Baisden, W. T.:
Seasonality of Airmass Pathways to Coastal Antarctica: Ramifications for
Interpreting High-Resolution Ice Core Records, J. Climate, 26, 2065–2076,
https://doi.org/10.1175/JCLI-D-12-00167.1, 2013.
Smith, B. T., van Ommen, T. D., and Morgan, V. I.: Distribution of oxygen
isotope ratios and snow accumulation rates in Wilhelm II Land, East Antarctica, Ann. Glaciol., 35, 107–110, https://doi.org/10.3189/172756402781816898, 2002.
Stein, A. F., Draxler, R. R., Rolph, G. D., Stunder, B. J. B., Cohen, M. D.,
and Ngan, F.: NOAA's HYSPLIT Atmospheric Transport and Dispersion Modeling
System, B. Am. Meteorol. Soc., 96, 2059–2077, https://doi.org/10.1175/BAMS-D-14-00110.1, 2015.
Stenni, B., J Curran, M. A., Abram, N. J., Orsi, A., Goursaud, S., Masson-Delmotte, V., Neukom, R., Goosse, H., Divine, D., van Ommen, T.,
Steig, E. J., Dixon, D. A., Thomas, E. R., N Bertler, N. A., Isaksson, E.,
Ekaykin, A., Werner, M., and Frezzotti, M.: Antarctic climate variability on
regional and continental scales over the last 2000 years, Clim. Past, 13,
1609–1634, https://doi.org/10.5194/cp-13-1609-2017, 2017.
Stokes, C. R., Abram, N. J., Bentley, M. J., Edwards, T. L., England, M. H.,
Foppert, A., Jamieson, S. S. R., Jones, R. S., King, M. A., Lenaerts, J. T.
M., Medley, B., Miles, B. W. J., Paxman, G. J. G., Ritz, C., van de Flierdt,
T., and Whitehouse, P. L.: Response of the East Antarctic Ice Sheet to past
and future climate change, Nature, 608, 275–286, https://doi.org/10.1038/s41586-022-04946-0, 2022.
Tetzner, D., Thomas, E., and Allen, C.: A Validation of ERA5 Reanalysis Data
in the Southern Antarctic Peninsul a– Ellsworth Land Region, and Its Implications for Ice Core Studies, Geosciences, 9, 289, https://doi.org/10.3390/GEOSCIENCES9070289, 2019.
Thomas, E. R., Dennis, P. F., Bracegirdle, T. J., and Franzke, C.: Ice core
evidence for significant 100-year regional warming on the Antarctic Peninsula, Geophys. Res. Lett., 36, 20704, https://doi.org/10.1029/2009GL040104, 2009.
Trenberth, K.: Storm Tracks in the Southern Hemisphere, J. Atmos. Sci., 48,
2159–2178, 1991.
Trenberth, K. and Caron, J.: Estimates of meridional atmosphere and ocean
heat transports, J. Climate, 14, 3433–3443, 2001.
Turner, J., Colwell, S. R., Marshall, G. J., Lachlan-Cope, T. A., Carleton,
A. M., Jones, P. D., Lagun, V., Reid, P. A., and Iagovkina, S.: Antarctic
climate change during the last 50 years, Int. J. Climatol., 25, 279–294,
https://doi.org/10.1002/JOC.1130, 2005.
Turner, J., Barrand, N. E., Bracegirdle, T. J., Convey, P., Hodgson, D. A.,
Jarvis, M., Jenkins, A., Marshall, G., Meredith, M. P., Roscoe, H., Shanklin, J., French, J., Goosse, H., Guglielmin, M., Gutt, J., Jacobs, S., Kennicutt, M. C., Masson-Delmotte, V., Mayewski, P., Navarro, F., Robinson, S., Scambos, T., Sparrow, M., Summerhayes, C., Speer, K., and Klepikov, A.: Antarctic climate change and the environment: An update, Polar Rec., 50, 237–259, https://doi.org/10.1017/S0032247413000296, 2014.
Turner, J., Phillips, T., Thamban, M., Rahaman, W., Marshall, G. J., Wille,
J. D., Favier, V., Winton, V. H. L., Thomas, E., Wang, Z., van den Broeke, M., Hosking, J. S., and Lachlan-Cope, T.: The Dominant Role of Extreme Precipitation Events in Antarctic Snowfall Variability, Geophys. Res. Lett.,
46, 3502–3511, https://doi.org/10.1029/2018GL081517, 2019.
Turner, J., Marshall, G. J., Clem, K., Colwell, S., Phillips, T., and Lu, H.: Antarctic temperature variability and change from station data, Int. J. Climatol., 40, 2986–3007, https://doi.org/10.1002/JOC.6378, 2020.
Turner, J., Lu, H., King, J. C., Carpentier, S., Lazzara, M., Phillips, T.,
and Wille, J.: An Extreme High Temperature Event in Coastal East Antarctica
Associated With an Atmospheric River and Record Summer Downslope Winds,
Geophys. Res. Lett., 49, e2021GL097108, https://doi.org/10.1029/2021GL097108, 2022.
Udy, D., Vance, T., Kiem, A., Holbrook, N., and Curran, M.: Daily synoptic weather types of southern Indian Ocean: January 1979–October 2018, Ver. 1, Australian Antarctic Data Centre [data set], https://doi.org/10.4225/15/58eedf00d78fe, 2020.
Udy, D. G., Vance, T. R., Kiem, A. S., Holbrook, N. J., and Curran, M. A. J.: Links between Large-Scale Modes of Climate Variability and Synoptic Weather Patterns in the Southern Indian Ocean, J. Climate, 34, 883–899,
https://doi.org/10.1175/JCLI-D-20-0297.1, 2021.
Udy, D. G., Vance, T. R., Kiem, A. S., and Holbrook, N. J.: A synoptic bridge linking sea salt aerosol concentrations in East Antarctic snowfall to Australian rainfall, Commun. Earth Environ., 31, 3, https://doi.org/10.1038/s43247-022-00502-w, 2022.
Vance, T. R., van Ommen, T. D., Curran, M. A. J., Plummer, C. T., and Moy, A.
D.: A Millennial Proxy Record of ENSO and Eastern Australian Rainfall from the Law Dome Ice Core, East Antarctica, J. Climate, 26, 710–725, https://doi.org/10.1175/JCLI-D-12-00003.1, 2013.
Vance, T. R., Roberts, J. L., Plummer, C. T., Kiem, A. S., and van Ommen, T.
D.: Interdecadal Pacific variability and eastern Australian megadroughts over the last millennium, Geophys. Res. Lett., 42, 129–137, https://doi.org/10.1002/2014GL062447, 2015.
Vance, T. R., Roberts, J. L., Moy, A. D., Curran, M. A. J., Tozer, C. R., Gallant, A. J. E., Abram, N. J., van Ommen, T. D., Young, D. A., Grima, C., Blankenship, D. D., and Siegert, M. J.: Optimal site selection for a high-resolution ice core record in East Antarctica, Clim. Past, 12, 595–610, https://doi.org/10.5194/cp-12-595-2016, 2016.
Vance, T. R., Kiem, A. S., Jong, L. M., Roberts, J. L., Plummer, C. T., Moy,
A. D., Curran, M. A. J., and van Ommen, T. D.: Pacific decadal variability
over the last 2000 years and implications for climatic risk, Commun. Earth
Environ., 31, 3, https://doi.org/10.1038/s43247-022-00359-z, 2022.
van de Berg, W., van Wessem, M., van de Broeke, M., Turner, J., and Phillips, T.: Antarctic daily precipitation amounts for January 1979–July 2017 from the RACMO version 3p2 limited area atmospheric model, along with flags that indicate extreme precipitation events (Version 1), UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation [data set], https://doi.org/10.5285/bbf12a6f-7d97-4951-9bd1-e4224e2abac9, 2019.
van Ommen, T. D. and Morgan, V.: Snowfall increase in coastal East Antarctica linked with southwest Western Australian drought, Nat. Geosci., 34, 267–272, https://doi.org/10.1038/ngeo761, 2010.
Wang, Y., Ding, M., Reijmer, C. H., Smeets, P. C. J. P., Hou, S., and Xiao,
C.: The AntSMB dataset: a comprehensive compilation of surface mass balance
field observations over the Antarctic Ice Sheet, Earth Syst. Sci. Data, 13,
3057–3074, https://doi.org/10.5194/essd-13-3057-2021, 2021.
Wille, J. D., Favier, V., Gorodetskaya, I. V., Agosta, C., Kittel, C., Beeman, J. C., Jourdain, N. C., Lenaerts, J. T. M., and Codron, F.: Antarctic Atmospheric River Climatology and Precipitation Impacts, J. Geophys. Res.-Atmos., 126, e2020JD033788, https://doi.org/10.1029/2020JD033788, 2021.
Wright, A. D. F.: Blocking action in the Australian region, Tech. Rep. no. 10, 29 pp., 1974.
Yuan, X., Kaplan, M. R., and Cane, M. A.: The Interconnected Global Climate
System – A Review of Tropical–Polar Teleconnections, J. Climate, 31,
5765–5792, https://doi.org/10.1175/JCLI-D-16-0637.1, 2018.
Zheng, Y., Jong, L. M., Phipps, S. J., Roberts, J. L., Moy, A. D., Curran, M. A. J., and van Ommen, T. D.: Extending and understanding the South West Western Australian rainfall record using a snowfall reconstruction from Law
Dome, East Antarctica, Clim. Past, 17, 1973–1987, https://doi.org/10.5194/cp-17-1973-2021, 2021.
Zhu, J., Xie, A., Qin, X., Wang, Y., Xu, B., and Wang, Y.: An Assessment of
ERA5 Reanalysis for Antarctic Near-Surface Air Temperature, Atmosphere, 12, 217, https://doi.org/10.3390/ATMOS12020217, 2021.
Short summary
Ice core records are useful tools for reconstructing past climate. However, ice cores favour recording climate conditions at times when snowfall occurs. Large snowfall events in Antarctica are often associated with warmer-than-usual temperatures. We show that this results in a tendency for the Mount Brown South ice core record to preserve a temperature record biased to the climate conditions that exist during extreme events, rather than a temperature record that reflects the mean annual climate.
Ice core records are useful tools for reconstructing past climate. However, ice cores favour...
