Dominant Modes of Tibetan Plateau Summer Surface Sensible Heating and Associated Atmospheric Circulation Anomalies
Based on empirical orthogonal function (EOF) analysis, the dominant modes of variations in summer surface sensible heating (SH) over the Tibetan Plateau (TP), as well as the associated atmospheric circulation anomalies, were investigated in this study. The results show that the first dominant mode o...
Published in: | Remote Sensing |
---|---|
Main Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
MDPI AG
2022
|
Subjects: | |
Online Access: | https://doi.org/10.3390/rs14040956 https://doaj.org/article/b936b85cadc24f989dd9617aa9463c84 |
id |
ftdoajarticles:oai:doaj.org/article:b936b85cadc24f989dd9617aa9463c84 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:b936b85cadc24f989dd9617aa9463c84 2023-05-15T17:35:49+02:00 Dominant Modes of Tibetan Plateau Summer Surface Sensible Heating and Associated Atmospheric Circulation Anomalies Weiwei Fan Zeyong Hu Weiqiang Ma Yaoming Ma Cunbo Han Xiang Han Yaoxian Yang Haipeng Yu Chunwei Fu Di Wu 2022-02-01T00:00:00Z https://doi.org/10.3390/rs14040956 https://doaj.org/article/b936b85cadc24f989dd9617aa9463c84 EN eng MDPI AG https://www.mdpi.com/2072-4292/14/4/956 https://doaj.org/toc/2072-4292 doi:10.3390/rs14040956 2072-4292 https://doaj.org/article/b936b85cadc24f989dd9617aa9463c84 Remote Sensing, Vol 14, Iss 956, p 956 (2022) surface sensible heating Tibetan Plateau teleconnection wave trains dominant modes interannual and interdecadal variations Science Q article 2022 ftdoajarticles https://doi.org/10.3390/rs14040956 2022-12-31T00:55:46Z Based on empirical orthogonal function (EOF) analysis, the dominant modes of variations in summer surface sensible heating (SH) over the Tibetan Plateau (TP), as well as the associated atmospheric circulation anomalies, were investigated in this study. The results show that the first dominant mode of summer SH presents a feature of decadal reduction over the whole TP on an interdecadal time scale, and the second dominant mode is characterized by a zonally asymmetric pattern with positive (negative) SH anomalies in the western (eastern) TP on an interannual time scale. The variations of summer SH are dominated by anomalies in downwelling surface shortwave radiation (DSWR), which are associated with atmospheric circulation changes. The first dominant mode of variation in SH is connected to the interdecadal variation of the Silk Road Pattern (SRP). Further analysis reveals that the interdecadal phase shift of the SRP induces anticyclone circulation to the northeast of the TP, leading to enhanced water vapor supply and convergence over the TP. This can lead to an increase in the total cloud cover, and a reduction in DSWR, contributing to the decadal reduction in SH over the TP. The second dominant mode of variation in SH is related to a stationary teleconnection pattern over the Eurasian continent named the North Atlantic-East and North Asia pattern (NAENA). Corresponding to the positive phase of the NAENA, there is a cyclone anomaly to the west TP, leading to anomalous water vapor convergence (divergence) over the eastern (western) TP. This can result in enhanced (decreased) cloud cover, reduced (increased) DSWR, and therefore, an anomalous decrease (enhancement) in SH over the east (west) of the TP. Furthermore, the southwesterly wind anomaly, which is accompanied by the anomalous cyclone to the west TP, leads to positive SH in the western TP. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Remote Sensing 14 4 956 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
surface sensible heating Tibetan Plateau teleconnection wave trains dominant modes interannual and interdecadal variations Science Q |
spellingShingle |
surface sensible heating Tibetan Plateau teleconnection wave trains dominant modes interannual and interdecadal variations Science Q Weiwei Fan Zeyong Hu Weiqiang Ma Yaoming Ma Cunbo Han Xiang Han Yaoxian Yang Haipeng Yu Chunwei Fu Di Wu Dominant Modes of Tibetan Plateau Summer Surface Sensible Heating and Associated Atmospheric Circulation Anomalies |
topic_facet |
surface sensible heating Tibetan Plateau teleconnection wave trains dominant modes interannual and interdecadal variations Science Q |
description |
Based on empirical orthogonal function (EOF) analysis, the dominant modes of variations in summer surface sensible heating (SH) over the Tibetan Plateau (TP), as well as the associated atmospheric circulation anomalies, were investigated in this study. The results show that the first dominant mode of summer SH presents a feature of decadal reduction over the whole TP on an interdecadal time scale, and the second dominant mode is characterized by a zonally asymmetric pattern with positive (negative) SH anomalies in the western (eastern) TP on an interannual time scale. The variations of summer SH are dominated by anomalies in downwelling surface shortwave radiation (DSWR), which are associated with atmospheric circulation changes. The first dominant mode of variation in SH is connected to the interdecadal variation of the Silk Road Pattern (SRP). Further analysis reveals that the interdecadal phase shift of the SRP induces anticyclone circulation to the northeast of the TP, leading to enhanced water vapor supply and convergence over the TP. This can lead to an increase in the total cloud cover, and a reduction in DSWR, contributing to the decadal reduction in SH over the TP. The second dominant mode of variation in SH is related to a stationary teleconnection pattern over the Eurasian continent named the North Atlantic-East and North Asia pattern (NAENA). Corresponding to the positive phase of the NAENA, there is a cyclone anomaly to the west TP, leading to anomalous water vapor convergence (divergence) over the eastern (western) TP. This can result in enhanced (decreased) cloud cover, reduced (increased) DSWR, and therefore, an anomalous decrease (enhancement) in SH over the east (west) of the TP. Furthermore, the southwesterly wind anomaly, which is accompanied by the anomalous cyclone to the west TP, leads to positive SH in the western TP. |
format |
Article in Journal/Newspaper |
author |
Weiwei Fan Zeyong Hu Weiqiang Ma Yaoming Ma Cunbo Han Xiang Han Yaoxian Yang Haipeng Yu Chunwei Fu Di Wu |
author_facet |
Weiwei Fan Zeyong Hu Weiqiang Ma Yaoming Ma Cunbo Han Xiang Han Yaoxian Yang Haipeng Yu Chunwei Fu Di Wu |
author_sort |
Weiwei Fan |
title |
Dominant Modes of Tibetan Plateau Summer Surface Sensible Heating and Associated Atmospheric Circulation Anomalies |
title_short |
Dominant Modes of Tibetan Plateau Summer Surface Sensible Heating and Associated Atmospheric Circulation Anomalies |
title_full |
Dominant Modes of Tibetan Plateau Summer Surface Sensible Heating and Associated Atmospheric Circulation Anomalies |
title_fullStr |
Dominant Modes of Tibetan Plateau Summer Surface Sensible Heating and Associated Atmospheric Circulation Anomalies |
title_full_unstemmed |
Dominant Modes of Tibetan Plateau Summer Surface Sensible Heating and Associated Atmospheric Circulation Anomalies |
title_sort |
dominant modes of tibetan plateau summer surface sensible heating and associated atmospheric circulation anomalies |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/rs14040956 https://doaj.org/article/b936b85cadc24f989dd9617aa9463c84 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Remote Sensing, Vol 14, Iss 956, p 956 (2022) |
op_relation |
https://www.mdpi.com/2072-4292/14/4/956 https://doaj.org/toc/2072-4292 doi:10.3390/rs14040956 2072-4292 https://doaj.org/article/b936b85cadc24f989dd9617aa9463c84 |
op_doi |
https://doi.org/10.3390/rs14040956 |
container_title |
Remote Sensing |
container_volume |
14 |
container_issue |
4 |
container_start_page |
956 |
_version_ |
1766135103954616320 |