Annual and seasonal precipitation and their extremes over the Tibetan Plateau and its surroundings in 1963–2015
Based on daily precipitation data from 115 climate stations, seasonal and annual precipitation and their extremes over the Tibetan Plateau and its surroundings (TPS) in 1963-2015 are investigated. There exists a clear southeast-northwest gradient in precipitation and extreme daily precipitation but...
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ftncar:oai:drupal-site.org:articles_24396 2024-04-28T08:31:09+00:00 Annual and seasonal precipitation and their extremes over the Tibetan Plateau and its surroundings in 1963–2015 Ding, Jin (author) Cuo, Lan (author) Zhang, Yongxin (author) Zhang, Cunjie (author) Liang, Liqiao (author) Liu, Zhe (author) 2021-05-12 https://doi.org/10.3390/atmos12050620 en eng Atmosphere--Atmosphere--2073-4433 articles:24396 ark:/85065/d7zp49hp doi:10.3390/atmos12050620 Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. article Text 2021 ftncar https://doi.org/10.3390/atmos12050620 2024-04-04T17:34:52Z Based on daily precipitation data from 115 climate stations, seasonal and annual precipitation and their extremes over the Tibetan Plateau and its surroundings (TPS) in 1963-2015 are investigated. There exists a clear southeast-northwest gradient in precipitation and extreme daily precipitation but an opposite pattern for the consecutive dry days (CDDs). The wet southeast is trending dry while the dry center and northwest are trending wet in 1963-2015. Correspondingly, there is a drying tendency over the wet basins in the southeast and a wetting tendency over the dry and semi-dry basins in the center and northwest in summer, which will affect the water resources in the corresponding areas. The increase (decrease) in precipitation tends to correspond to the increase (decrease) in maximum daily precipitation but the decrease (increase) in CDDs. Extreme precipitation events with 20-year, 50-year, 100-year, and 200-year recurrence occurred frequently in the past decades especially in the 1980s. The greatest extreme precipitation events tend to occur after the late 1990s and in the southeastern TPS. The ERA5 reanalysis and climate system indices reveal that (1) decreased moisture transports to the southeast in summer due to the weakening of the summer monsoons and the East Asian westerly jet; (2) increased moisture transports to the center in winter due to the strengthening of the winter westerly jet and north Atlantic oscillation; and (3) decreased instability over the southeast thus suppressing precipitation and increased instability over the northwest thus promoting precipitation. All these are conducive to the drying trends in the southeast and the wetting trends in the center. Article in Journal/Newspaper North Atlantic North Atlantic oscillation OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Atmosphere 12 5 620 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
description |
Based on daily precipitation data from 115 climate stations, seasonal and annual precipitation and their extremes over the Tibetan Plateau and its surroundings (TPS) in 1963-2015 are investigated. There exists a clear southeast-northwest gradient in precipitation and extreme daily precipitation but an opposite pattern for the consecutive dry days (CDDs). The wet southeast is trending dry while the dry center and northwest are trending wet in 1963-2015. Correspondingly, there is a drying tendency over the wet basins in the southeast and a wetting tendency over the dry and semi-dry basins in the center and northwest in summer, which will affect the water resources in the corresponding areas. The increase (decrease) in precipitation tends to correspond to the increase (decrease) in maximum daily precipitation but the decrease (increase) in CDDs. Extreme precipitation events with 20-year, 50-year, 100-year, and 200-year recurrence occurred frequently in the past decades especially in the 1980s. The greatest extreme precipitation events tend to occur after the late 1990s and in the southeastern TPS. The ERA5 reanalysis and climate system indices reveal that (1) decreased moisture transports to the southeast in summer due to the weakening of the summer monsoons and the East Asian westerly jet; (2) increased moisture transports to the center in winter due to the strengthening of the winter westerly jet and north Atlantic oscillation; and (3) decreased instability over the southeast thus suppressing precipitation and increased instability over the northwest thus promoting precipitation. All these are conducive to the drying trends in the southeast and the wetting trends in the center. |
author2 |
Ding, Jin (author) Cuo, Lan (author) Zhang, Yongxin (author) Zhang, Cunjie (author) Liang, Liqiao (author) Liu, Zhe (author) |
format |
Article in Journal/Newspaper |
title |
Annual and seasonal precipitation and their extremes over the Tibetan Plateau and its surroundings in 1963–2015 |
spellingShingle |
Annual and seasonal precipitation and their extremes over the Tibetan Plateau and its surroundings in 1963–2015 |
title_short |
Annual and seasonal precipitation and their extremes over the Tibetan Plateau and its surroundings in 1963–2015 |
title_full |
Annual and seasonal precipitation and their extremes over the Tibetan Plateau and its surroundings in 1963–2015 |
title_fullStr |
Annual and seasonal precipitation and their extremes over the Tibetan Plateau and its surroundings in 1963–2015 |
title_full_unstemmed |
Annual and seasonal precipitation and their extremes over the Tibetan Plateau and its surroundings in 1963–2015 |
title_sort |
annual and seasonal precipitation and their extremes over the tibetan plateau and its surroundings in 1963–2015 |
publishDate |
2021 |
url |
https://doi.org/10.3390/atmos12050620 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Atmosphere--Atmosphere--2073-4433 articles:24396 ark:/85065/d7zp49hp doi:10.3390/atmos12050620 |
op_rights |
Copyright author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |
op_doi |
https://doi.org/10.3390/atmos12050620 |
container_title |
Atmosphere |
container_volume |
12 |
container_issue |
5 |
container_start_page |
620 |
_version_ |
1797588770333130752 |