Precipitation and synoptic regime in two extreme years 2009 and 2010 at Dome C, Antarctica - implications for ice core interpretation
At the East Antarctic deep ice core drilling site Dome C, daily precipitation measurements were initiated in 2006 and are being continued until today. The amounts and stable isotope ratios of the precipitation samples as well as crystal types are determined. Within the measuring period, the two year...
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ftuniveneziairis:oai:iris.unive.it:10278/3673406 2024-04-14T08:03:06+00:00 Precipitation and synoptic regime in two extreme years 2009 and 2010 at Dome C, Antarctica - implications for ice core interpretation Schlosser, Elisabeth Valt, Mauro Cagnati, Anselmo Powers, Jordan G. Manning, Kevin W. Raphael, Marilyn Duda, Michael G. STENNI, Barbara Schlosser, Elisabeth Stenni, Barbara Valt, Mauro Cagnati, Anselmo Powers, Jordan G. Manning, Kevin W. Raphael, Marilyn Duda, Michael G. 2016 http://hdl.handle.net/10278/3673406 https://doi.org/10.5194/acp-16-4757-2016 unknown info:eu-repo/semantics/altIdentifier/wos/WOS:000376937000001 volume:16 issue:8 firstpage:4757 lastpage:4770 numberofpages:14 journal:ATMOSPHERIC CHEMISTRY AND PHYSICS http://hdl.handle.net/10278/3673406 doi:10.5194/acp-16-4757-2016 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84965070748 info:eu-repo/semantics/openAccess DRONNING MAUD LAND MESOSCALE-PREDICTION-SYSTEM HIGH SOUTHERN LATITUDES EAST ANTARCTICA ATMOSPHERIC CIRCULATION TEMPORAL VARIABILITY ISOTOPIC COMPOSITION SNOW ACCUMULATION WEATHER RESEARCH PART I Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2016 ftuniveneziairis https://doi.org/10.5194/acp-16-4757-2016 2024-03-21T18:04:51Z At the East Antarctic deep ice core drilling site Dome C, daily precipitation measurements were initiated in 2006 and are being continued until today. The amounts and stable isotope ratios of the precipitation samples as well as crystal types are determined. Within the measuring period, the two years 2009 and 2010 showed striking contrasting temperature and precipitation anomalies, particularly in the winter seasons. The reasons for these anomalies are analysed using data from the mesoscale atmospheric model WRF (Weather Research and Forecasting Model) run under the Antarctic Mesoscale Prediction System (AMPS). 2009 was relatively warm and moist due to frequent warm air intrusions connected to amplification of Rossby waves in the circumpolar westerlies, whereas the winter of 2010 was extremely dry and cold. It is shown that while in 2010 a strong zonal atmospheric flow was dominant, in 2009 an enhanced meridional flow prevailed, which increased the meridional transport of heat and moisture onto the East Antarctic plateau and led to a number of high-precipitation/warming events at Dome C. This was also evident in a positive (negative) SAM (Southern Annular Mode) index and a negative (positive) ZW3 (zonal wave number three) index during the winter months of 2010 (2009). Changes in the frequency or seasonality of such event-type precipitation can lead to a strong bias in the air temperature derived from stable water isotopes in ice cores. Article in Journal/Newspaper Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica ice core Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Antarctic The Antarctic East Antarctica Dronning Maud Land Atmospheric Chemistry and Physics 16 8 4757 4770 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
unknown |
topic |
DRONNING MAUD LAND MESOSCALE-PREDICTION-SYSTEM HIGH SOUTHERN LATITUDES EAST ANTARCTICA ATMOSPHERIC CIRCULATION TEMPORAL VARIABILITY ISOTOPIC COMPOSITION SNOW ACCUMULATION WEATHER RESEARCH PART I Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
DRONNING MAUD LAND MESOSCALE-PREDICTION-SYSTEM HIGH SOUTHERN LATITUDES EAST ANTARCTICA ATMOSPHERIC CIRCULATION TEMPORAL VARIABILITY ISOTOPIC COMPOSITION SNOW ACCUMULATION WEATHER RESEARCH PART I Settore GEO/08 - Geochimica e Vulcanologia Schlosser, Elisabeth Valt, Mauro Cagnati, Anselmo Powers, Jordan G. Manning, Kevin W. Raphael, Marilyn Duda, Michael G. STENNI, Barbara Precipitation and synoptic regime in two extreme years 2009 and 2010 at Dome C, Antarctica - implications for ice core interpretation |
topic_facet |
DRONNING MAUD LAND MESOSCALE-PREDICTION-SYSTEM HIGH SOUTHERN LATITUDES EAST ANTARCTICA ATMOSPHERIC CIRCULATION TEMPORAL VARIABILITY ISOTOPIC COMPOSITION SNOW ACCUMULATION WEATHER RESEARCH PART I Settore GEO/08 - Geochimica e Vulcanologia |
description |
At the East Antarctic deep ice core drilling site Dome C, daily precipitation measurements were initiated in 2006 and are being continued until today. The amounts and stable isotope ratios of the precipitation samples as well as crystal types are determined. Within the measuring period, the two years 2009 and 2010 showed striking contrasting temperature and precipitation anomalies, particularly in the winter seasons. The reasons for these anomalies are analysed using data from the mesoscale atmospheric model WRF (Weather Research and Forecasting Model) run under the Antarctic Mesoscale Prediction System (AMPS). 2009 was relatively warm and moist due to frequent warm air intrusions connected to amplification of Rossby waves in the circumpolar westerlies, whereas the winter of 2010 was extremely dry and cold. It is shown that while in 2010 a strong zonal atmospheric flow was dominant, in 2009 an enhanced meridional flow prevailed, which increased the meridional transport of heat and moisture onto the East Antarctic plateau and led to a number of high-precipitation/warming events at Dome C. This was also evident in a positive (negative) SAM (Southern Annular Mode) index and a negative (positive) ZW3 (zonal wave number three) index during the winter months of 2010 (2009). Changes in the frequency or seasonality of such event-type precipitation can lead to a strong bias in the air temperature derived from stable water isotopes in ice cores. |
author2 |
Schlosser, Elisabeth Stenni, Barbara Valt, Mauro Cagnati, Anselmo Powers, Jordan G. Manning, Kevin W. Raphael, Marilyn Duda, Michael G. |
format |
Article in Journal/Newspaper |
author |
Schlosser, Elisabeth Valt, Mauro Cagnati, Anselmo Powers, Jordan G. Manning, Kevin W. Raphael, Marilyn Duda, Michael G. STENNI, Barbara |
author_facet |
Schlosser, Elisabeth Valt, Mauro Cagnati, Anselmo Powers, Jordan G. Manning, Kevin W. Raphael, Marilyn Duda, Michael G. STENNI, Barbara |
author_sort |
Schlosser, Elisabeth |
title |
Precipitation and synoptic regime in two extreme years 2009 and 2010 at Dome C, Antarctica - implications for ice core interpretation |
title_short |
Precipitation and synoptic regime in two extreme years 2009 and 2010 at Dome C, Antarctica - implications for ice core interpretation |
title_full |
Precipitation and synoptic regime in two extreme years 2009 and 2010 at Dome C, Antarctica - implications for ice core interpretation |
title_fullStr |
Precipitation and synoptic regime in two extreme years 2009 and 2010 at Dome C, Antarctica - implications for ice core interpretation |
title_full_unstemmed |
Precipitation and synoptic regime in two extreme years 2009 and 2010 at Dome C, Antarctica - implications for ice core interpretation |
title_sort |
precipitation and synoptic regime in two extreme years 2009 and 2010 at dome c, antarctica - implications for ice core interpretation |
publishDate |
2016 |
url |
http://hdl.handle.net/10278/3673406 https://doi.org/10.5194/acp-16-4757-2016 |
geographic |
Antarctic The Antarctic East Antarctica Dronning Maud Land |
geographic_facet |
Antarctic The Antarctic East Antarctica Dronning Maud Land |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica ice core |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000376937000001 volume:16 issue:8 firstpage:4757 lastpage:4770 numberofpages:14 journal:ATMOSPHERIC CHEMISTRY AND PHYSICS http://hdl.handle.net/10278/3673406 doi:10.5194/acp-16-4757-2016 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84965070748 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-16-4757-2016 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
16 |
container_issue |
8 |
container_start_page |
4757 |
op_container_end_page |
4770 |
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1796298457288278016 |