Synoptic situations causing high precipitation rates on the Antarctic plateau: observations from Kohnen Station, Dronning Maud Land
Kohnen Station (75°S, 0°E, 2892 m) is one of the two drilling sites of the European Project for Ice Coring in Antarctica. Snow falls at Kohnen only a few times a year with comparatively high precipitation rates of 1 mm to over 5 mm water equivalent per event. These events contribute considerably to...
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Online Access: | http://dx.doi.org/10.1017/s0954102006000320 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102006000320 |
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crcambridgeupr:10.1017/s0954102006000320 2024-09-15T17:43:20+00:00 Synoptic situations causing high precipitation rates on the Antarctic plateau: observations from Kohnen Station, Dronning Maud Land Birnbaum, Gerit Brauner, Ralf Ries, Hinnerk 2006 http://dx.doi.org/10.1017/s0954102006000320 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102006000320 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 18, issue 2, page 279-288 ISSN 0954-1020 1365-2079 journal-article 2006 crcambridgeupr https://doi.org/10.1017/s0954102006000320 2024-07-17T04:04:30Z Kohnen Station (75°S, 0°E, 2892 m) is one of the two drilling sites of the European Project for Ice Coring in Antarctica. Snow falls at Kohnen only a few times a year with comparatively high precipitation rates of 1 mm to over 5 mm water equivalent per event. These events contribute considerably to the total annual accumulation of which the long-term mean value is 62 mm water equivalent per year. For ice core interpretation, it is important to understand synoptic processes leading to such high precipitation rates. Our investigation is based on visually observed periods of heavy snowfall at Kohnen during summer campaigns since 2001/2002. The corresponding synoptic situations can be grouped into three categories. Category I is where occluding fronts of eastward-moving low pressure systems reach the plateau, a fairly frequent occurrence. Category II is where lows or secondary lows formed east of the Greenwich Meridian move to the west (retrograde movement), and frontal clouds influence the plateau. In Category III, large-scale lifting processes (due to an upper air low west of Kohnen Station) lead to cloud formation over the plateau of Dronning Maud Land. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica Dronning Maud Land ice core Cambridge University Press Antarctic Science 18 2 279 288 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Kohnen Station (75°S, 0°E, 2892 m) is one of the two drilling sites of the European Project for Ice Coring in Antarctica. Snow falls at Kohnen only a few times a year with comparatively high precipitation rates of 1 mm to over 5 mm water equivalent per event. These events contribute considerably to the total annual accumulation of which the long-term mean value is 62 mm water equivalent per year. For ice core interpretation, it is important to understand synoptic processes leading to such high precipitation rates. Our investigation is based on visually observed periods of heavy snowfall at Kohnen during summer campaigns since 2001/2002. The corresponding synoptic situations can be grouped into three categories. Category I is where occluding fronts of eastward-moving low pressure systems reach the plateau, a fairly frequent occurrence. Category II is where lows or secondary lows formed east of the Greenwich Meridian move to the west (retrograde movement), and frontal clouds influence the plateau. In Category III, large-scale lifting processes (due to an upper air low west of Kohnen Station) lead to cloud formation over the plateau of Dronning Maud Land. |
format |
Article in Journal/Newspaper |
author |
Birnbaum, Gerit Brauner, Ralf Ries, Hinnerk |
spellingShingle |
Birnbaum, Gerit Brauner, Ralf Ries, Hinnerk Synoptic situations causing high precipitation rates on the Antarctic plateau: observations from Kohnen Station, Dronning Maud Land |
author_facet |
Birnbaum, Gerit Brauner, Ralf Ries, Hinnerk |
author_sort |
Birnbaum, Gerit |
title |
Synoptic situations causing high precipitation rates on the Antarctic plateau: observations from Kohnen Station, Dronning Maud Land |
title_short |
Synoptic situations causing high precipitation rates on the Antarctic plateau: observations from Kohnen Station, Dronning Maud Land |
title_full |
Synoptic situations causing high precipitation rates on the Antarctic plateau: observations from Kohnen Station, Dronning Maud Land |
title_fullStr |
Synoptic situations causing high precipitation rates on the Antarctic plateau: observations from Kohnen Station, Dronning Maud Land |
title_full_unstemmed |
Synoptic situations causing high precipitation rates on the Antarctic plateau: observations from Kohnen Station, Dronning Maud Land |
title_sort |
synoptic situations causing high precipitation rates on the antarctic plateau: observations from kohnen station, dronning maud land |
publisher |
Cambridge University Press (CUP) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1017/s0954102006000320 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102006000320 |
genre |
Antarc* Antarctic Antarctic Science Antarctica Dronning Maud Land ice core |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica Dronning Maud Land ice core |
op_source |
Antarctic Science volume 18, issue 2, page 279-288 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102006000320 |
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Antarctic Science |
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18 |
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2 |
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279 |
op_container_end_page |
288 |
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1810490289076305920 |