Data

Extending and understanding the South West Western Australian rainfall record using the Dome Summit South ice core, East Antarctica

University of Tasmania, Australia

Zheng,Yaowen ; Phipps, Steven ; Roberts, Jason ; Jong, Lenneke M

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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.25959/5f4c50b7b661f&rft.title=Extending and understanding the South West Western Australian rainfall record using the Dome Summit South ice core, East Antarctica&rft.identifier=10.25959/5f4c50b7b661f&rft.description=A 2038-year South West Western Australia rainfall reconstruction. The prolonged rainfall reduction in South West Western Australia (SWWA) in recent decades has previously been reported to be unprecedented in the past 750 years. This rainfall reduction has reduced the water supply for both residents and agriculture in SWWA. However, the cause of this rainfall reduction is unclear. The relatively short length of the SWWA instrumental rainfall record limits longterm studies of SWWA rainfall. In this study, SWWA rainfall is reconstructed based on a statistically significant negative correlation between SWWA rainfall and snowfall at Dome Summit South (DSS), East Antarctica. The 2000-year DSS snow accumulation record is used to reconstruct SWWA rainfall from 22 BCE to 2015 CE. With Cumulative Summation (CUSUM) analysis applied to the rainfall reconstruction, it is found that SWWA rainfall started to reduce around 1971 CE. This prolonged rainfall reduction is unprecedented during the past 750 years, but there have been two prior droughts of similar duration and intensity during the past 2000 years. Applying statistical techniques to compare the rainfall reconstruction with climate model simulations, it is found that greenhouse gases are likely to be the dominant driver of the SWWA rainfall drying trend after 1971 CE.Maintenance and Update Frequency: notPlannedStatement: The South West Western Australia (SWWA) growing season (May to October) rainfall was reconstructed based on a statistically significant negative correlation between SWWA rainfall and snowfall at Dome Summit South (DSS), East Antarctica. The 200-year DSS snow accumulation record is used to reconstruct SWWA rainfall from 22 BCE to 2015 CE.&rft.creator=Zheng,Yaowen &rft.creator=Phipps, Steven &rft.creator=Roberts, Jason &rft.creator=Jong, Lenneke M &rft.date=2021&rft.coverage=westlimit=113.451660491; southlimit=-34.8887751782; eastlimit=119.384277679; northlimit=-32.1428502819&rft.coverage=westlimit=113.451660491; southlimit=-34.8887751782; eastlimit=119.384277679; northlimit=-32.1428502819&rft_rights=The data described in this record are the intellectual property of the the Institute for Marine and Antarctic Studies, University of Tasmania (UTAS), and the Australian Antarctic Division (AAD).&rft_rights= http://creativecommons.org/licenses/by/4.0/&rft_rights=http://i.creativecommons.org/l/by/4.0/88x31.png&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Graphic&rft_rights=Creative Commons Attribution 4.0 International License&rft_rights=http://creativecommons.org/international/&rft_rights=WWW:LINK-1.0-http--related&rft_rights=WWW:LINK-1.0-http--related&rft_rights=License Text&rft_rights=Cite data as: Zheng, Y., Phipps, S., Roberts, J. and Jong, L.M. (2020). Extending and understanding the South West Western Australian rainfall record using the Dome Summit South ice core, East Antarctica. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). doi:10.25959/5f4c50b7b661f&rft_rights=Creative Commons Attribution 4.0 International License http://creativecommons.org/licenses/by/4.0&rft_subject=climatologyMeteorologyAtmosphere&rft_subject=South West Western Australia&rft_subject=PALEOCLIMATE RECONSTRUCTIONS&rft_subject=EARTH SCIENCE&rft_subject=CLIMATE INDICATORS&rft_subject=PALEOCLIMATE INDICATORS&rft_subject=DROUGHT/PRECIPITATION RECONSTRUCTION&rft_subject=Climatology (excl. Climate Change Processes)&rft_subject=EARTH SCIENCES&rft_subject=ATMOSPHERIC SCIENCES&rft_subject=South West Western Australia rainfall reconstruction&rft.type=dataset&rft.language=English Access the data

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The data described in this record are the intellectual property of the the Institute for Marine and Antarctic Studies, University of Tasmania (UTAS), and the Australian Antarctic Division (AAD).

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Cite data as: Zheng, Y., Phipps, S., Roberts, J. and Jong, L.M. (2020). Extending and understanding the South West Western Australian rainfall record using the Dome Summit South ice core, East Antarctica. Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS). doi:10.25959/5f4c50b7b661f

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Brief description

A 2038-year South West Western Australia rainfall reconstruction.

The prolonged rainfall reduction in South West Western Australia (SWWA) in recent decades has previously been reported to be unprecedented in the past 750 years. This rainfall reduction has reduced the water supply for both residents and agriculture in SWWA. However, the cause of this rainfall reduction is unclear. The relatively short length of the SWWA instrumental rainfall record limits longterm studies of SWWA rainfall. In this study, SWWA rainfall is reconstructed based on a statistically significant negative correlation between SWWA rainfall and snowfall at Dome Summit South (DSS), East Antarctica. The 2000-year DSS snow accumulation record is used to reconstruct SWWA rainfall from 22 BCE to 2015 CE. With Cumulative Summation (CUSUM) analysis applied to the rainfall reconstruction, it is found that SWWA rainfall started to reduce around 1971 CE. This prolonged rainfall reduction is unprecedented during the past 750 years, but there have been two prior droughts of similar duration and intensity during the past 2000 years. Applying statistical techniques to compare the rainfall reconstruction with climate model simulations, it is found that greenhouse gases are likely to be the dominant driver of the SWWA rainfall drying trend after 1971 CE.

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Maintenance and Update Frequency: notPlanned

Statement: The South West Western Australia (SWWA) growing season (May to October) rainfall was reconstructed based on a statistically significant negative correlation between SWWA rainfall and snowfall at Dome Summit South (DSS), East Antarctica. The 200-year DSS snow accumulation record is used to reconstruct SWWA rainfall from 22 BCE to 2015 CE.

Notes

Credit
Australian Research Council's Special Research Initiative for the Antarctic Gateway Partnership (Project ID SR140300001)

Credit
Centre for Southern Hemisphere Oceans Research, a joint research centre between QNLM and CSIRO, and (iii) the Australia’s Antarctic program (AAS 4061, 4062 and 4537)

Credit
IMAS Honours Student Program 2019-2020

Data time period: 2019-08-31 to 2020-06-22

This dataset is part of a larger collection

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text: westlimit=113.451660491; southlimit=-34.8887751782; eastlimit=119.384277679; northlimit=-32.1428502819

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Other Information

(DATA ACCESS - SWWA rainfall reconstruction [direct download])

uri : https://data.imas.utas.edu.au/attachments/d7d5ea56-f972-435d-b44b-44fea598150c/SWWA_Rainfall_Reconstruction.xlsx External Link

global : 47848595-038b-46b3-ba75-6f52d5295a62

Identifiers

global : d7d5ea56-f972-435d-b44b-44fea598150c
DOI : 10.25959/5f4c50b7b661f
DOI : https://doi.org/10.25959/5f4c50b7b661f

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