Subsurface heat conduction along the CHINARE traverse route, East Antarctica
Abstract Using data from three automatic weather stations (LGB69, Eagle and Dome A) from distinctly different climatological zones along the CHINARE (Chinese National Antarctic Research Expedition) traverse route from Zhongshan Station to Dome A, we investigated the characteristics of meteorological...
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Online Access: | http://dx.doi.org/10.1017/jog.2022.97 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000971 |
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crcambridgeupr:10.1017/jog.2022.97 2024-03-03T08:38:09+00:00 Subsurface heat conduction along the CHINARE traverse route, East Antarctica Yang, Diyi Ding, Minghu Allison, Ian Zou, Xiaowei Chen, Xinyan Heil, Petra Zhang, Wenqian Bian, Lingen Xiao, Cunde National Natural Science Foundation of China 2022 http://dx.doi.org/10.1017/jog.2022.97 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000971 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology volume 69, issue 276, page 762-772 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 2022 crcambridgeupr https://doi.org/10.1017/jog.2022.97 2024-02-08T08:43:40Z Abstract Using data from three automatic weather stations (LGB69, Eagle and Dome A) from distinctly different climatological zones along the CHINARE (Chinese National Antarctic Research Expedition) traverse route from Zhongshan Station to Dome A, we investigated the characteristics of meteorological conditions and subsurface heat conduction. Spatial analysis indicated decreasing trends in air temperature, relative humidity and wind speed from the coastal katabatic wind zone to the inland plateau region, and air temperatures clearly showed a strong daily variability in winter, suggesting the effect from the fluctuation in the Antarctic atmospheric system. We also analyzed the optimal response time of the 1 and 3 m depth snow temperatures to the 0.1 m depth snow temperature for each site under clear/overcast and day/night situations. This showed an important enhancement to the heat transfer from shortwave radiation penetration. Using an iterative optimization method, we estimated the subsurface heat conduction variations along the transect. This was ~3–5 W m –2 . Multiple maxima in daily mean subsurface fluxes were found in winter, with a typical value above 2 W m –2 , while a single minimum value under –2 W m –2 was found in summer. On an annual scale, a larger mean loss of subsurface heat conduction was observed in the inland plateau compared to in the coastal katabatic area. Finally, we discussed the possible influences of turbulent and radiant transport on the vertical heat response and confirmed the wind enhancement on the growth of thermal conductivity. This preliminary study provides a brief perspective and an important reference for studying subsurface heat conduction in inland areas of Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Journal of Glaciology Cambridge University Press Antarctic The Antarctic East Antarctica Zhongshan ENVELOPE(76.371,76.371,-69.373,-69.373) Zhongshan Station ENVELOPE(76.371,76.371,-69.373,-69.373) Journal of Glaciology 1 11 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Yang, Diyi Ding, Minghu Allison, Ian Zou, Xiaowei Chen, Xinyan Heil, Petra Zhang, Wenqian Bian, Lingen Xiao, Cunde Subsurface heat conduction along the CHINARE traverse route, East Antarctica |
topic_facet |
Earth-Surface Processes |
description |
Abstract Using data from three automatic weather stations (LGB69, Eagle and Dome A) from distinctly different climatological zones along the CHINARE (Chinese National Antarctic Research Expedition) traverse route from Zhongshan Station to Dome A, we investigated the characteristics of meteorological conditions and subsurface heat conduction. Spatial analysis indicated decreasing trends in air temperature, relative humidity and wind speed from the coastal katabatic wind zone to the inland plateau region, and air temperatures clearly showed a strong daily variability in winter, suggesting the effect from the fluctuation in the Antarctic atmospheric system. We also analyzed the optimal response time of the 1 and 3 m depth snow temperatures to the 0.1 m depth snow temperature for each site under clear/overcast and day/night situations. This showed an important enhancement to the heat transfer from shortwave radiation penetration. Using an iterative optimization method, we estimated the subsurface heat conduction variations along the transect. This was ~3–5 W m –2 . Multiple maxima in daily mean subsurface fluxes were found in winter, with a typical value above 2 W m –2 , while a single minimum value under –2 W m –2 was found in summer. On an annual scale, a larger mean loss of subsurface heat conduction was observed in the inland plateau compared to in the coastal katabatic area. Finally, we discussed the possible influences of turbulent and radiant transport on the vertical heat response and confirmed the wind enhancement on the growth of thermal conductivity. This preliminary study provides a brief perspective and an important reference for studying subsurface heat conduction in inland areas of Antarctica. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Yang, Diyi Ding, Minghu Allison, Ian Zou, Xiaowei Chen, Xinyan Heil, Petra Zhang, Wenqian Bian, Lingen Xiao, Cunde |
author_facet |
Yang, Diyi Ding, Minghu Allison, Ian Zou, Xiaowei Chen, Xinyan Heil, Petra Zhang, Wenqian Bian, Lingen Xiao, Cunde |
author_sort |
Yang, Diyi |
title |
Subsurface heat conduction along the CHINARE traverse route, East Antarctica |
title_short |
Subsurface heat conduction along the CHINARE traverse route, East Antarctica |
title_full |
Subsurface heat conduction along the CHINARE traverse route, East Antarctica |
title_fullStr |
Subsurface heat conduction along the CHINARE traverse route, East Antarctica |
title_full_unstemmed |
Subsurface heat conduction along the CHINARE traverse route, East Antarctica |
title_sort |
subsurface heat conduction along the chinare traverse route, east antarctica |
publisher |
Cambridge University Press (CUP) |
publishDate |
2022 |
url |
http://dx.doi.org/10.1017/jog.2022.97 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143022000971 |
long_lat |
ENVELOPE(76.371,76.371,-69.373,-69.373) ENVELOPE(76.371,76.371,-69.373,-69.373) |
geographic |
Antarctic The Antarctic East Antarctica Zhongshan Zhongshan Station |
geographic_facet |
Antarctic The Antarctic East Antarctica Zhongshan Zhongshan Station |
genre |
Antarc* Antarctic Antarctica East Antarctica Journal of Glaciology |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Journal of Glaciology |
op_source |
Journal of Glaciology volume 69, issue 276, page 762-772 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2022.97 |
container_title |
Journal of Glaciology |
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11 |
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1792505025295024128 |