An extreme precipitation event over Dronning Maud Land, East Antarctica - Atmospheric river case study using the Polar WRF Model ...
<!--!introduction!--> We investigated a heavy snowfall event in Dronning Maud Land (DML), East Antarctica, on November 8th and 9th, 2015, which contributed to 20% of the total annual accumulation. The anomalous moisture transport during the event was due to a strong atmospheric river, a long,...
| Main Authors: | , , , , |
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| Format: | Conference Object |
| Language: | unknown |
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GFZ German Research Centre for Geosciences
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.57757/iugg23-1055 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018201 |
| Summary: | <!--!introduction!--> We investigated a heavy snowfall event in Dronning Maud Land (DML), East Antarctica, on November 8th and 9th, 2015, which contributed to 20% of the total annual accumulation. The anomalous moisture transport during the event was due to a strong atmospheric river, a long, narrow band of high moisture that travelled poleward from 30-40S in the South Atlantic Ocean. The synoptic scale pattern consisted of an anomalous blocking ridge extending to the Antarctic continent and a deep cyclonic system that intruded into the area. The main moisture source was in an area of anomalous evaporation in the South Atlantic Ocean 4-5 days prior to the event. The eastward movement of this anomaly and the strengthening of the low-pressure system in the Atlantic Ocean favoured a band of high moisture transport towards DML. A regional atmospheric model optimized for the polar regions (Polar WRF) was used to examine the relationship between the complex coastal topography of DML and the spatial ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
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