Characteristics and seasonal variations of precipitation phenomena at Syowa Station
Long-term observations of precipitating clouds were carried out by a vertical pointing radar, PPI radar and a 37 GHz microwave radiometer at Syowa Station (69°00′S, 39°35′E), Antarctica in 1989. It is concluded from the observations that precipitation near Syowa Station, Antarctica is mainly brought...
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ftdoajarticles:oai:doaj.org/article:03293fd619094b9f89da721f4b16cdc7 2023-05-15T14:03:19+02:00 Characteristics and seasonal variations of precipitation phenomena at Syowa Station Hiroyuki Konishi Tatsuo Endoh 1997-03-01T00:00:00Z https://doi.org/10.15094/00008964 https://doaj.org/article/03293fd619094b9f89da721f4b16cdc7 EN JA eng jpn National Institute of Polar Research http://doi.org/10.15094/00008964 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008964 0085-7289 2432-079X https://doaj.org/article/03293fd619094b9f89da721f4b16cdc7 Antarctic Record, Vol 41, Iss 1, Pp 103-129 (1997) Geography (General) G1-922 article 1997 ftdoajarticles https://doi.org/10.15094/00008964 2022-12-31T08:36:07Z Long-term observations of precipitating clouds were carried out by a vertical pointing radar, PPI radar and a 37 GHz microwave radiometer at Syowa Station (69°00′S, 39°35′E), Antarctica in 1989. It is concluded from the observations that precipitation near Syowa Station, Antarctica is mainly brought by cloud vortices associated with extratropical cyclones which advance to high latitude while developing to a mature stage. The seasonal variations of clouds and precipitation were analyzed corresponding to the seasonal changes of air temperature and sea ice area. The occurrence frequencies of cloud vortices which brought snowfall to Syowa Station increased in the fall and spring seasons corresponding to activity of the circumpolar trough. However, the activities of cloud systems that bring precipitation weaken in spring when the sea ice area expands to low latitudes, because of less supply of heat and vapor. In 1989,the amount of precipitation in spring brought by a few snowfall events was as large as the amount of precipitation in fall brought by frequent snowfall events. Radar observations revealed that there were three abundant snowfall seasons at Syowa Station and the amount of snowfall was uniform in all seasons except summer. The amounts of precipitation in fall, winter and spring were 74,74 and 53mm respectively. Article in Journal/Newspaper Antarc* Antarctica E. Antarctica Sea ice Directory of Open Access Journals: DOAJ Articles Syowa Station |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Hiroyuki Konishi Tatsuo Endoh Characteristics and seasonal variations of precipitation phenomena at Syowa Station |
topic_facet |
Geography (General) G1-922 |
description |
Long-term observations of precipitating clouds were carried out by a vertical pointing radar, PPI radar and a 37 GHz microwave radiometer at Syowa Station (69°00′S, 39°35′E), Antarctica in 1989. It is concluded from the observations that precipitation near Syowa Station, Antarctica is mainly brought by cloud vortices associated with extratropical cyclones which advance to high latitude while developing to a mature stage. The seasonal variations of clouds and precipitation were analyzed corresponding to the seasonal changes of air temperature and sea ice area. The occurrence frequencies of cloud vortices which brought snowfall to Syowa Station increased in the fall and spring seasons corresponding to activity of the circumpolar trough. However, the activities of cloud systems that bring precipitation weaken in spring when the sea ice area expands to low latitudes, because of less supply of heat and vapor. In 1989,the amount of precipitation in spring brought by a few snowfall events was as large as the amount of precipitation in fall brought by frequent snowfall events. Radar observations revealed that there were three abundant snowfall seasons at Syowa Station and the amount of snowfall was uniform in all seasons except summer. The amounts of precipitation in fall, winter and spring were 74,74 and 53mm respectively. |
format |
Article in Journal/Newspaper |
author |
Hiroyuki Konishi Tatsuo Endoh |
author_facet |
Hiroyuki Konishi Tatsuo Endoh |
author_sort |
Hiroyuki Konishi |
title |
Characteristics and seasonal variations of precipitation phenomena at Syowa Station |
title_short |
Characteristics and seasonal variations of precipitation phenomena at Syowa Station |
title_full |
Characteristics and seasonal variations of precipitation phenomena at Syowa Station |
title_fullStr |
Characteristics and seasonal variations of precipitation phenomena at Syowa Station |
title_full_unstemmed |
Characteristics and seasonal variations of precipitation phenomena at Syowa Station |
title_sort |
characteristics and seasonal variations of precipitation phenomena at syowa station |
publisher |
National Institute of Polar Research |
publishDate |
1997 |
url |
https://doi.org/10.15094/00008964 https://doaj.org/article/03293fd619094b9f89da721f4b16cdc7 |
geographic |
Syowa Station |
geographic_facet |
Syowa Station |
genre |
Antarc* Antarctica E. Antarctica Sea ice |
genre_facet |
Antarc* Antarctica E. Antarctica Sea ice |
op_source |
Antarctic Record, Vol 41, Iss 1, Pp 103-129 (1997) |
op_relation |
http://doi.org/10.15094/00008964 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008964 0085-7289 2432-079X https://doaj.org/article/03293fd619094b9f89da721f4b16cdc7 |
op_doi |
https://doi.org/10.15094/00008964 |
_version_ |
1766273933765509120 |