Thermal, pressure and wind fields at ground level in the area of the Italian base at Terra Nova Bay, Victoria Land, Antarctica, as observed by a network of automatic weather stations
International audience Ground temperature, pressure and wind speed monthly averages in the area of the Italian Station at Terra Nova Bay, Antarctica, were analyzed for the period 1987?1991 by means of a network of nine AWS (automatic weather stations). Spatial configurations of temperature show a we...
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ftccsdartic:oai:HAL:hal-00316216v1 2023-11-12T04:05:21+01:00 Thermal, pressure and wind fields at ground level in the area of the Italian base at Terra Nova Bay, Victoria Land, Antarctica, as observed by a network of automatic weather stations Cogliani, E. Abbate, G. Racalbuto, S. Italian National agency for new technologies, Energy and sustainable economic development Frascati (ENEA) 1996 https://hal.science/hal-00316216 https://hal.science/hal-00316216/document https://hal.science/hal-00316216/file/angeo-14-1088-1996.pdf en eng HAL CCSD European Geosciences Union hal-00316216 https://hal.science/hal-00316216 https://hal.science/hal-00316216/document https://hal.science/hal-00316216/file/angeo-14-1088-1996.pdf info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00316216 Annales Geophysicae, 1996, 14 (10), pp.1088-1094 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 1996 ftccsdartic 2023-10-21T23:08:45Z International audience Ground temperature, pressure and wind speed monthly averages in the area of the Italian Station at Terra Nova Bay, Antarctica, were analyzed for the period 1987?1991 by means of a network of nine AWS (automatic weather stations). Spatial configurations of temperature show a well-defined, relatively warm island in the area of Terra Nova Bay, between Drygalsky and Campbell ice tongues, throughout the year. A second warm island is present to the north along the coast, between Aviator and Mariner ice tongues, for most of the year. From February to March a rapid drop in temperature is observed at all stations. A strong thermal gradient develops during February, March, April and October, November, December, between the coastal region and inner highlands. The baric configuration follows the elevation of the area. Annual average pressure and temperature as functions of stations altitude show linear trends. Severe katabatic wind episodes are recorded at all stations, with wind speed exceeding 25 m s ?1 and direction following the orographic features of the inner areas. Co-occurrences of these episodes were observed for stations located along stream lines of cold air drainage. The autocorrelation function of maximum wind speed time series shows wind persistence of 2?3 days and wind periodicity of about one week. Article in Journal/Newspaper Antarc* Antarctica Victoria Land Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Terra Nova Bay Victoria Land |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Cogliani, E. Abbate, G. Racalbuto, S. Thermal, pressure and wind fields at ground level in the area of the Italian base at Terra Nova Bay, Victoria Land, Antarctica, as observed by a network of automatic weather stations |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Ground temperature, pressure and wind speed monthly averages in the area of the Italian Station at Terra Nova Bay, Antarctica, were analyzed for the period 1987?1991 by means of a network of nine AWS (automatic weather stations). Spatial configurations of temperature show a well-defined, relatively warm island in the area of Terra Nova Bay, between Drygalsky and Campbell ice tongues, throughout the year. A second warm island is present to the north along the coast, between Aviator and Mariner ice tongues, for most of the year. From February to March a rapid drop in temperature is observed at all stations. A strong thermal gradient develops during February, March, April and October, November, December, between the coastal region and inner highlands. The baric configuration follows the elevation of the area. Annual average pressure and temperature as functions of stations altitude show linear trends. Severe katabatic wind episodes are recorded at all stations, with wind speed exceeding 25 m s ?1 and direction following the orographic features of the inner areas. Co-occurrences of these episodes were observed for stations located along stream lines of cold air drainage. The autocorrelation function of maximum wind speed time series shows wind persistence of 2?3 days and wind periodicity of about one week. |
author2 |
Italian National agency for new technologies, Energy and sustainable economic development Frascati (ENEA) |
format |
Article in Journal/Newspaper |
author |
Cogliani, E. Abbate, G. Racalbuto, S. |
author_facet |
Cogliani, E. Abbate, G. Racalbuto, S. |
author_sort |
Cogliani, E. |
title |
Thermal, pressure and wind fields at ground level in the area of the Italian base at Terra Nova Bay, Victoria Land, Antarctica, as observed by a network of automatic weather stations |
title_short |
Thermal, pressure and wind fields at ground level in the area of the Italian base at Terra Nova Bay, Victoria Land, Antarctica, as observed by a network of automatic weather stations |
title_full |
Thermal, pressure and wind fields at ground level in the area of the Italian base at Terra Nova Bay, Victoria Land, Antarctica, as observed by a network of automatic weather stations |
title_fullStr |
Thermal, pressure and wind fields at ground level in the area of the Italian base at Terra Nova Bay, Victoria Land, Antarctica, as observed by a network of automatic weather stations |
title_full_unstemmed |
Thermal, pressure and wind fields at ground level in the area of the Italian base at Terra Nova Bay, Victoria Land, Antarctica, as observed by a network of automatic weather stations |
title_sort |
thermal, pressure and wind fields at ground level in the area of the italian base at terra nova bay, victoria land, antarctica, as observed by a network of automatic weather stations |
publisher |
HAL CCSD |
publishDate |
1996 |
url |
https://hal.science/hal-00316216 https://hal.science/hal-00316216/document https://hal.science/hal-00316216/file/angeo-14-1088-1996.pdf |
geographic |
Terra Nova Bay Victoria Land |
geographic_facet |
Terra Nova Bay Victoria Land |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00316216 Annales Geophysicae, 1996, 14 (10), pp.1088-1094 |
op_relation |
hal-00316216 https://hal.science/hal-00316216 https://hal.science/hal-00316216/document https://hal.science/hal-00316216/file/angeo-14-1088-1996.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782341961884106752 |