Winter warming-event observed at Dome Fuji Station and synoptic-scale circulation in the Antarctic
The atmosphere over the Antarctic interior is usually separated from the outside by circumpolar tight potential vorticity gradients, where surface transient eddies are embedded, at the Dome Fuji Station (77゜S, 40゜E) on the topographical ridge of the East Antarctic ice sheet, an intensive meteorologi...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:9d008d093eed49fda34b699eb9ec1b5e 2023-05-15T13:36:05+02:00 Winter warming-event observed at Dome Fuji Station and synoptic-scale circulation in the Antarctic Naohiko Hirasawa 2010-12-01 https://doi.org/10.15094/00009559 https://doaj.org/article/9d008d093eed49fda34b699eb9ec1b5e en other eng National Institute of Polar Research doi:10.15094/00009559 0085-7289 2432-079X https://doaj.org/article/9d008d093eed49fda34b699eb9ec1b5e undefined Antarctic Record, Vol 54, Iss special issue, Pp 292-307 (2010) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2010 fttriple https://doi.org/10.15094/00009559 2023-01-22T18:19:15Z The atmosphere over the Antarctic interior is usually separated from the outside by circumpolar tight potential vorticity gradients, where surface transient eddies are embedded, at the Dome Fuji Station (77゜S, 40゜E) on the topographical ridge of the East Antarctic ice sheet, an intensive meteorological observation campaign was carried out in 1997, The daily surface air temperature at Dome Fuji Station in the winter was generally around -70゜C, influenced by a ground-based temperature inversion as well as lower temperature in the polar vortex, On the other hand, the air temperature varied with larger amplitude in winter than in summer, The most prominent fluctuation, which was warming to about -30゜C from -70゜C (approximately a 40゜C-warming for only 2 days), occurred in the second half of June (Hirasawa et al., 2000), The warming was accompanied with increments in surface pressure, surface wind speed, and cloud amount, They were induced by warm, moist air advection from outside of the continent, associated with a blocking ridge which was the leading edge of a quasi-stationary Rossby wave, The present research found 18 warming-events in the 1997 winter from April to October, including the one in June above, Most the warming-events were accompanied by increased surface pressure, surface wind speed, and cloud amount, and were associated with synoptic-scale anticyclonic circulations, respectively. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Unknown Antarctic The Antarctic East Antarctic Ice Sheet Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Dome Fuji Station ENVELOPE(39.703,39.703,-77.317,-77.317) |
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English |
topic |
geo envir |
spellingShingle |
geo envir Naohiko Hirasawa Winter warming-event observed at Dome Fuji Station and synoptic-scale circulation in the Antarctic |
topic_facet |
geo envir |
description |
The atmosphere over the Antarctic interior is usually separated from the outside by circumpolar tight potential vorticity gradients, where surface transient eddies are embedded, at the Dome Fuji Station (77゜S, 40゜E) on the topographical ridge of the East Antarctic ice sheet, an intensive meteorological observation campaign was carried out in 1997, The daily surface air temperature at Dome Fuji Station in the winter was generally around -70゜C, influenced by a ground-based temperature inversion as well as lower temperature in the polar vortex, On the other hand, the air temperature varied with larger amplitude in winter than in summer, The most prominent fluctuation, which was warming to about -30゜C from -70゜C (approximately a 40゜C-warming for only 2 days), occurred in the second half of June (Hirasawa et al., 2000), The warming was accompanied with increments in surface pressure, surface wind speed, and cloud amount, They were induced by warm, moist air advection from outside of the continent, associated with a blocking ridge which was the leading edge of a quasi-stationary Rossby wave, The present research found 18 warming-events in the 1997 winter from April to October, including the one in June above, Most the warming-events were accompanied by increased surface pressure, surface wind speed, and cloud amount, and were associated with synoptic-scale anticyclonic circulations, respectively. |
format |
Article in Journal/Newspaper |
author |
Naohiko Hirasawa |
author_facet |
Naohiko Hirasawa |
author_sort |
Naohiko Hirasawa |
title |
Winter warming-event observed at Dome Fuji Station and synoptic-scale circulation in the Antarctic |
title_short |
Winter warming-event observed at Dome Fuji Station and synoptic-scale circulation in the Antarctic |
title_full |
Winter warming-event observed at Dome Fuji Station and synoptic-scale circulation in the Antarctic |
title_fullStr |
Winter warming-event observed at Dome Fuji Station and synoptic-scale circulation in the Antarctic |
title_full_unstemmed |
Winter warming-event observed at Dome Fuji Station and synoptic-scale circulation in the Antarctic |
title_sort |
winter warming-event observed at dome fuji station and synoptic-scale circulation in the antarctic |
publisher |
National Institute of Polar Research |
publishDate |
2010 |
url |
https://doi.org/10.15094/00009559 https://doaj.org/article/9d008d093eed49fda34b699eb9ec1b5e |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) ENVELOPE(39.703,39.703,-77.317,-77.317) |
geographic |
Antarctic The Antarctic East Antarctic Ice Sheet Dome Fuji Dome Fuji Station |
geographic_facet |
Antarctic The Antarctic East Antarctic Ice Sheet Dome Fuji Dome Fuji Station |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
Antarctic Record, Vol 54, Iss special issue, Pp 292-307 (2010) |
op_relation |
doi:10.15094/00009559 0085-7289 2432-079X https://doaj.org/article/9d008d093eed49fda34b699eb9ec1b5e |
op_rights |
undefined |
op_doi |
https://doi.org/10.15094/00009559 |
_version_ |
1766074200525635584 |