Multi-Temporal Variabilities of Extreme Precipitation over Central Asia and Associated Planetary-Scale Climate Modes
Arid- and semi-arid Central Asia is particularly sensitive to climate change. The changes in extreme precipitation in Central Asia stemming from climate warming are the subject of intense debate within the scientific community. This study employed a Morlet wavelet analysis to examine the annual occu...
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ftdoajarticles:oai:doaj.org/article:190513a9af9544d5a152aa122b82d1af 2023-09-26T15:21:02+02:00 Multi-Temporal Variabilities of Extreme Precipitation over Central Asia and Associated Planetary-Scale Climate Modes Wei Tang Fang Xiao Sheng Lai 2023-08-01T00:00:00Z https://doi.org/10.3390/atmos14081300 https://doaj.org/article/190513a9af9544d5a152aa122b82d1af EN eng MDPI AG https://www.mdpi.com/2073-4433/14/8/1300 https://doaj.org/toc/2073-4433 doi:10.3390/atmos14081300 2073-4433 https://doaj.org/article/190513a9af9544d5a152aa122b82d1af Atmosphere, Vol 14, Iss 1300, p 1300 (2023) extreme precipitation Central Asia the Polar/Eurasia pattern Meteorology. Climatology QC851-999 article 2023 ftdoajarticles https://doi.org/10.3390/atmos14081300 2023-08-27T00:36:06Z Arid- and semi-arid Central Asia is particularly sensitive to climate change. The changes in extreme precipitation in Central Asia stemming from climate warming are the subject of intense debate within the scientific community. This study employed a Morlet wavelet analysis to examine the annual occurrence number of extreme precipitation in Central Asia from May to September during the period of 1951–2005. Their modulating planetary-scale climate modes were identified by using linear regression analysis. Two major scales of the temporal variability were derived: 2–3.9 years and 4–6 years. The dominant variability was a 2–3.9-year scale and was associated with the negative phase of the Polar/Eurasia (POL) pattern. The 4–6-year scale provided a secondary contribution and was closely linked to the negative phase of the North Atlantic Oscillation (NAO). These planetary climate modes acted as precursors of extreme precipitation over Central Asia. The negative phase of POL directly contributed to a negative height anomaly over Central Asia, which was intimately related to extreme precipitation. In contrast, the negative NAO phase possibly manifested as a Rossby wave source, which was subsequently exported to Central Asia through a negative–positive–negative Rossby wave train. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Directory of Open Access Journals: DOAJ Articles Atmosphere 14 8 1300 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
extreme precipitation Central Asia the Polar/Eurasia pattern Meteorology. Climatology QC851-999 |
spellingShingle |
extreme precipitation Central Asia the Polar/Eurasia pattern Meteorology. Climatology QC851-999 Wei Tang Fang Xiao Sheng Lai Multi-Temporal Variabilities of Extreme Precipitation over Central Asia and Associated Planetary-Scale Climate Modes |
topic_facet |
extreme precipitation Central Asia the Polar/Eurasia pattern Meteorology. Climatology QC851-999 |
description |
Arid- and semi-arid Central Asia is particularly sensitive to climate change. The changes in extreme precipitation in Central Asia stemming from climate warming are the subject of intense debate within the scientific community. This study employed a Morlet wavelet analysis to examine the annual occurrence number of extreme precipitation in Central Asia from May to September during the period of 1951–2005. Their modulating planetary-scale climate modes were identified by using linear regression analysis. Two major scales of the temporal variability were derived: 2–3.9 years and 4–6 years. The dominant variability was a 2–3.9-year scale and was associated with the negative phase of the Polar/Eurasia (POL) pattern. The 4–6-year scale provided a secondary contribution and was closely linked to the negative phase of the North Atlantic Oscillation (NAO). These planetary climate modes acted as precursors of extreme precipitation over Central Asia. The negative phase of POL directly contributed to a negative height anomaly over Central Asia, which was intimately related to extreme precipitation. In contrast, the negative NAO phase possibly manifested as a Rossby wave source, which was subsequently exported to Central Asia through a negative–positive–negative Rossby wave train. |
format |
Article in Journal/Newspaper |
author |
Wei Tang Fang Xiao Sheng Lai |
author_facet |
Wei Tang Fang Xiao Sheng Lai |
author_sort |
Wei Tang |
title |
Multi-Temporal Variabilities of Extreme Precipitation over Central Asia and Associated Planetary-Scale Climate Modes |
title_short |
Multi-Temporal Variabilities of Extreme Precipitation over Central Asia and Associated Planetary-Scale Climate Modes |
title_full |
Multi-Temporal Variabilities of Extreme Precipitation over Central Asia and Associated Planetary-Scale Climate Modes |
title_fullStr |
Multi-Temporal Variabilities of Extreme Precipitation over Central Asia and Associated Planetary-Scale Climate Modes |
title_full_unstemmed |
Multi-Temporal Variabilities of Extreme Precipitation over Central Asia and Associated Planetary-Scale Climate Modes |
title_sort |
multi-temporal variabilities of extreme precipitation over central asia and associated planetary-scale climate modes |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/atmos14081300 https://doaj.org/article/190513a9af9544d5a152aa122b82d1af |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Atmosphere, Vol 14, Iss 1300, p 1300 (2023) |
op_relation |
https://www.mdpi.com/2073-4433/14/8/1300 https://doaj.org/toc/2073-4433 doi:10.3390/atmos14081300 2073-4433 https://doaj.org/article/190513a9af9544d5a152aa122b82d1af |
op_doi |
https://doi.org/10.3390/atmos14081300 |
container_title |
Atmosphere |
container_volume |
14 |
container_issue |
8 |
container_start_page |
1300 |
_version_ |
1778145440086097920 |