Interannual Variability and Trends in Extreme Precipitation in Dronning Maud Land, East Antarctica
This study examines the trends and interannual variability of extreme precipitation in Antarctica, using six decades (1963–2023) of daily precipitation data from Russia’s Novolazarevskaya Station in East Antarctica. The results reveal declining trends in both the annual number of extreme precipitati...
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MDPI AG
2025-01-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/17/2/324 |
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| author | Lejiang Yu Shiyuan Zhong Svetlana Jagovkina Cuijuan Sui Bo Sun |
| author_facet | Lejiang Yu Shiyuan Zhong Svetlana Jagovkina Cuijuan Sui Bo Sun |
| author_sort | Lejiang Yu |
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| description | This study examines the trends and interannual variability of extreme precipitation in Antarctica, using six decades (1963–2023) of daily precipitation data from Russia’s Novolazarevskaya Station in East Antarctica. The results reveal declining trends in both the annual number of extreme precipitation days and the total amount of extreme precipitation, as well as a decreasing ratio of extreme to total annual precipitation. These trends are linked to changes in northward water vapor flux and enhanced downward atmospheric motion. The synoptic pattern driving extreme precipitation events is characterized by a dipole of negative and positive height anomalies to the west and east of the station, respectively, which directs southward water vapor flux into the region. Interannual variability in extreme precipitation days shows a significant correlation with the Niño 3.4 index during the austral winter semester (May–October). This relationship, weak before 1992, strengthened significantly afterward due to shifting wave patterns induced by tropical Pacific sea surface temperature anomalies. These findings shed light on how large-scale atmospheric circulation and tropical-extratropical teleconnections shape Antarctic precipitation patterns, with potential implications for ice sheet stability and regional climate variability. |
| format | Article |
| id | doaj-art-377f0d0b796940c8b581586db60b9d02 |
| institution | Kabale University |
| issn | 2072-4292 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj-art-377f0d0b796940c8b581586db60b9d022025-01-24T13:48:07ZengMDPI AGRemote Sensing2072-42922025-01-0117232410.3390/rs17020324Interannual Variability and Trends in Extreme Precipitation in Dronning Maud Land, East AntarcticaLejiang Yu0Shiyuan Zhong1Svetlana Jagovkina2Cuijuan Sui3Bo Sun4State Oceanic Administration Key Laboratory for Polar Science, Polar Research Institute of China, No. 451, Jinqiao Road, Pudong New District, Shanghai 200136, ChinaDepartment of Geography, Environment and Spatial Sciences, Michigan State University, East Lansing, MI 48824, USAArctic and Antarctic Research Institute, Saint Petersburg 199397, RussiaNational Marine Environmental Forecasting Center, Beijing 100081, ChinaState Oceanic Administration Key Laboratory for Polar Science, Polar Research Institute of China, No. 451, Jinqiao Road, Pudong New District, Shanghai 200136, ChinaThis study examines the trends and interannual variability of extreme precipitation in Antarctica, using six decades (1963–2023) of daily precipitation data from Russia’s Novolazarevskaya Station in East Antarctica. The results reveal declining trends in both the annual number of extreme precipitation days and the total amount of extreme precipitation, as well as a decreasing ratio of extreme to total annual precipitation. These trends are linked to changes in northward water vapor flux and enhanced downward atmospheric motion. The synoptic pattern driving extreme precipitation events is characterized by a dipole of negative and positive height anomalies to the west and east of the station, respectively, which directs southward water vapor flux into the region. Interannual variability in extreme precipitation days shows a significant correlation with the Niño 3.4 index during the austral winter semester (May–October). This relationship, weak before 1992, strengthened significantly afterward due to shifting wave patterns induced by tropical Pacific sea surface temperature anomalies. These findings shed light on how large-scale atmospheric circulation and tropical-extratropical teleconnections shape Antarctic precipitation patterns, with potential implications for ice sheet stability and regional climate variability.https://www.mdpi.com/2072-4292/17/2/324Antarctic climateclimate changeextreme precipitationclimate variabilityENSOteleconnection |
| spellingShingle | Lejiang Yu Shiyuan Zhong Svetlana Jagovkina Cuijuan Sui Bo Sun Interannual Variability and Trends in Extreme Precipitation in Dronning Maud Land, East Antarctica Remote Sensing Antarctic climate climate change extreme precipitation climate variability ENSO teleconnection |
| title | Interannual Variability and Trends in Extreme Precipitation in Dronning Maud Land, East Antarctica |
| title_full | Interannual Variability and Trends in Extreme Precipitation in Dronning Maud Land, East Antarctica |
| title_fullStr | Interannual Variability and Trends in Extreme Precipitation in Dronning Maud Land, East Antarctica |
| title_full_unstemmed | Interannual Variability and Trends in Extreme Precipitation in Dronning Maud Land, East Antarctica |
| title_short | Interannual Variability and Trends in Extreme Precipitation in Dronning Maud Land, East Antarctica |
| title_sort | interannual variability and trends in extreme precipitation in dronning maud land east antarctica |
| topic | Antarctic climate climate change extreme precipitation climate variability ENSO teleconnection |
| url | https://www.mdpi.com/2072-4292/17/2/324 |
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