Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station

The net surface snow accumulation on the Antarctic ice sheet is determined by a combination of precipitation, sublimation and wind redistribution. We present a 1 year record of hourly snow-height measurements that shows its seasonal variability. The measurements were made with an ultrasonic sensor m...

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Main Authors: Qin, DH, Xiao, CD, Ian, A, Bian, LG, Ren, JW, Yan, M
Other Authors: Qin, DH (reprint author), Chinese Acad Sci, Lab Ice Core & Cold Reg Environm, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Peoples R China., Chinese Acad Sci, Lab Ice Core & Cold Reg Environm, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Peoples R China., Peking Univ, Coll Phys, Beijing 100871, Peoples R China., Australian Antarctic Div & Antarctic Climate & Ec, Hobart, Tas 7001, Australia., Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China., Polar Res Inst China, Shanghai 200129, Peoples R China.
Format: Conference Object
Language:English
Published: 2004
Subjects:
Online Access:https://hdl.handle.net/20.500.11897/400322
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spelling ftpekinguniv:oai:localhost:20.500.11897/400322 2023-05-15T13:29:13+02:00 Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station Qin, DH Xiao, CD Ian, A Bian, LG Ren, JW Yan, M Qin, DH (reprint author), Chinese Acad Sci, Lab Ice Core & Cold Reg Environm, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Peoples R China. Chinese Acad Sci, Lab Ice Core & Cold Reg Environm, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Peoples R China. Peking Univ, Coll Phys, Beijing 100871, Peoples R China. Australian Antarctic Div & Antarctic Climate & Ec, Hobart, Tas 7001, Australia. Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China. Polar Res Inst China, Shanghai 200129, Peoples R China. 2004 https://hdl.handle.net/20.500.11897/400322 en eng ANNALS OF GLACIOLOGY, VOL 39, 2004.39(181-187). 1003675 0260-3055 http://hdl.handle.net/20.500.11897/400322 WOS:000232368400027 SCI DRONNING MAUD LAND EAST ANTARCTICA POLAR PLATEAU MASS-BALANCE ACCUMULATION SUBLIMATION Conference 2004 ftpekinguniv https://doi.org/20.500.11897/400322 2021-08-01T10:25:34Z The net surface snow accumulation on the Antarctic ice sheet is determined by a combination of precipitation, sublimation and wind redistribution. We present a 1 year record of hourly snow-height measurements that shows its seasonal variability. The measurements were made with an ultrasonic sensor mounted on an automatic weather station (AWS) installed at LGB69, Princess Elizabeth Land, Antarctica (70.835 degrees S, 77.075 degrees E; 1850 m a.s.l.). The average accumulation at this site is approximately 0.70 m snow a(-1). Throughout the winter, between April and September, there was little change in surface snow height. The strongest accumulation occurred during the period October-March, with four episodic increases occurring during 2002. These episodic events coincided with obvious humidity 'pulses' and decreases of incoming solar radiation as recorded by the AWS. Observations of the total cloud amount at Davis station, 160 km north-northeast of LGB69, showed good correlation with major accumulation events recorded at LGB69. There was an obvious anticorrelation between the lowest cloud height at Davis and the daily accumulation rate at LGB69. Although there was no correlation over the total year between wind speed and accumulation at LGB69, large individual accumulation events are associated with episodes of strong wind. Strong accumulation events at LGB69 are associated with major storms in the region and inland transport of moist air masses from the coast. Geosciences, Multidisciplinary SCI(E) CPCI-S(ISTP) 5 Conference Object Annals of Glaciology Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica Ice Sheet Princess Elizabeth Land Peking University Institutional Repository (PKU IR) Antarctic Davis Station ENVELOPE(77.968,77.968,-68.576,-68.576) Davis-Station ENVELOPE(77.968,77.968,-68.576,-68.576) Dronning Maud Land East Antarctica Polar Plateau ENVELOPE(0.000,0.000,-90.000,-90.000) Princess Elizabeth Land ENVELOPE(80.367,80.367,-68.500,-68.500) The Antarctic
institution Open Polar
collection Peking University Institutional Repository (PKU IR)
op_collection_id ftpekinguniv
language English
topic DRONNING MAUD LAND
EAST ANTARCTICA
POLAR PLATEAU
MASS-BALANCE
ACCUMULATION
SUBLIMATION
spellingShingle DRONNING MAUD LAND
EAST ANTARCTICA
POLAR PLATEAU
MASS-BALANCE
ACCUMULATION
SUBLIMATION
Qin, DH
Xiao, CD
Ian, A
Bian, LG
Ren, JW
Yan, M
Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station
topic_facet DRONNING MAUD LAND
EAST ANTARCTICA
POLAR PLATEAU
MASS-BALANCE
ACCUMULATION
SUBLIMATION
description The net surface snow accumulation on the Antarctic ice sheet is determined by a combination of precipitation, sublimation and wind redistribution. We present a 1 year record of hourly snow-height measurements that shows its seasonal variability. The measurements were made with an ultrasonic sensor mounted on an automatic weather station (AWS) installed at LGB69, Princess Elizabeth Land, Antarctica (70.835 degrees S, 77.075 degrees E; 1850 m a.s.l.). The average accumulation at this site is approximately 0.70 m snow a(-1). Throughout the winter, between April and September, there was little change in surface snow height. The strongest accumulation occurred during the period October-March, with four episodic increases occurring during 2002. These episodic events coincided with obvious humidity 'pulses' and decreases of incoming solar radiation as recorded by the AWS. Observations of the total cloud amount at Davis station, 160 km north-northeast of LGB69, showed good correlation with major accumulation events recorded at LGB69. There was an obvious anticorrelation between the lowest cloud height at Davis and the daily accumulation rate at LGB69. Although there was no correlation over the total year between wind speed and accumulation at LGB69, large individual accumulation events are associated with episodes of strong wind. Strong accumulation events at LGB69 are associated with major storms in the region and inland transport of moist air masses from the coast. Geosciences, Multidisciplinary SCI(E) CPCI-S(ISTP) 5
author2 Qin, DH (reprint author), Chinese Acad Sci, Lab Ice Core & Cold Reg Environm, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Peoples R China.
Chinese Acad Sci, Lab Ice Core & Cold Reg Environm, Cold & Arid Reg Environm & Engn Inst, Lanzhou 730000, Peoples R China.
Peking Univ, Coll Phys, Beijing 100871, Peoples R China.
Australian Antarctic Div & Antarctic Climate & Ec, Hobart, Tas 7001, Australia.
Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China.
Polar Res Inst China, Shanghai 200129, Peoples R China.
format Conference Object
author Qin, DH
Xiao, CD
Ian, A
Bian, LG
Ren, JW
Yan, M
author_facet Qin, DH
Xiao, CD
Ian, A
Bian, LG
Ren, JW
Yan, M
author_sort Qin, DH
title Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station
title_short Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station
title_full Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station
title_fullStr Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station
title_full_unstemmed Snow surface height variations on the Antarctic ice sheet in Princess Elizabeth Land, Antarctica: 1 year of data from an automatic weather station
title_sort snow surface height variations on the antarctic ice sheet in princess elizabeth land, antarctica: 1 year of data from an automatic weather station
publishDate 2004
url https://hdl.handle.net/20.500.11897/400322
long_lat ENVELOPE(77.968,77.968,-68.576,-68.576)
ENVELOPE(77.968,77.968,-68.576,-68.576)
ENVELOPE(0.000,0.000,-90.000,-90.000)
ENVELOPE(80.367,80.367,-68.500,-68.500)
geographic Antarctic
Davis Station
Davis-Station
Dronning Maud Land
East Antarctica
Polar Plateau
Princess Elizabeth Land
The Antarctic
geographic_facet Antarctic
Davis Station
Davis-Station
Dronning Maud Land
East Antarctica
Polar Plateau
Princess Elizabeth Land
The Antarctic
genre Annals of Glaciology
Antarc*
Antarctic
Antarctica
Dronning Maud Land
East Antarctica
Ice Sheet
Princess Elizabeth Land
genre_facet Annals of Glaciology
Antarc*
Antarctic
Antarctica
Dronning Maud Land
East Antarctica
Ice Sheet
Princess Elizabeth Land
op_source SCI
op_relation ANNALS OF GLACIOLOGY, VOL 39, 2004.39(181-187).
1003675
0260-3055
http://hdl.handle.net/20.500.11897/400322
WOS:000232368400027
op_doi https://doi.org/20.500.11897/400322
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