Variation of GPS Precipitable Water over the Qinghai-Tibet Plateau: Possible Teleconnection Triggering Rainfall over the Yangtze River Valley
GPS technologies show many capabilities for monitoring atmospheric water vapor. This study uses GPS data from the Japan International Co-operation Agency (JICA) and Hubei GPS network to monitor precipitable water (PW) over the Qinghai-Tibet Plateau (QTP) and over the middle Yangtze River Valley (YRV...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Chinese Geoscience Union
2011-01-01
|
Series: | Terrestrial, Atmospheric and Oceanic Sciences |
Subjects: | |
Online Access: |
http://tao.cgu.org.tw/images/attachments/v222p187.pdf
|
id |
doaj-e9d3d1989c75405baf61a2dbe9816b6e |
---|---|
record_format |
Article |
spelling |
doaj-e9d3d1989c75405baf61a2dbe9816b6e2020-11-24T21:32:45ZengChinese Geoscience UnionTerrestrial, Atmospheric and Oceanic Sciences1017-08392311-76802011-01-0122218710.3319/TAO.2010.09.09.01(TibXS)1004Variation of GPS Precipitable Water over the Qinghai-Tibet Plateau: Possible Teleconnection Triggering Rainfall over the Yangtze River ValleyGui-Rong XuChun-Guang CuiWu-Jie LiWen ZhangGuang-Liu FengGPS technologies show many capabilities for monitoring atmospheric water vapor. This study uses GPS data from the Japan International Co-operation Agency (JICA) and Hubei GPS network to monitor precipitable water (PW) over the Qinghai-Tibet Plateau (QTP) and over the middle Yangtze River Valley (YRV). The results show that the southern QTP is wetter than the central area due to the barring effect of the Plateau on the monsoon. PW is higher in summer than other months over either the QTP or the middle YRV. The diurnal variation of PW over the QTP is more complex than that of the middle YRV with fluctuations occurring during the whole day due to the unique topography. The minimum PW over both the QTP and the middle YRV appears in the morning; however, the peak over the QTP occurs at night while the peak over the middle YRV occurs in the early afternoon. Furthermore, PW over the QTP, especially its southern and eastern edges, are positively correlated with PW over the middle YRV. This may imply that the southern and eastern Plateaus are key regions transporting atmospheric vapor to the middle YRV. Our results indicate the possibility of finding early warning signals resulting from the intensification of the QTP atmospheric vapor leading to heavy rainfall events over the middle YRV. http://tao.cgu.org.tw/images/attachments/v222p187.pdf Ground-based GPSPrecipitable waterQinghai-Tibet PlateauYangtze River Valley |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Gui-Rong Xu Chun-Guang Cui Wu-Jie Li Wen Zhang Guang-Liu Feng |
spellingShingle |
Gui-Rong Xu Chun-Guang Cui Wu-Jie Li Wen Zhang Guang-Liu Feng Variation of GPS Precipitable Water over the Qinghai-Tibet Plateau: Possible Teleconnection Triggering Rainfall over the Yangtze River Valley Terrestrial, Atmospheric and Oceanic Sciences Ground-based GPS Precipitable water Qinghai-Tibet Plateau Yangtze River Valley |
author_facet |
Gui-Rong Xu Chun-Guang Cui Wu-Jie Li Wen Zhang Guang-Liu Feng |
author_sort |
Gui-Rong Xu |
title |
Variation of GPS Precipitable Water over the Qinghai-Tibet Plateau: Possible Teleconnection Triggering Rainfall over the Yangtze River Valley |
title_short |
Variation of GPS Precipitable Water over the Qinghai-Tibet Plateau: Possible Teleconnection Triggering Rainfall over the Yangtze River Valley |
title_full |
Variation of GPS Precipitable Water over the Qinghai-Tibet Plateau: Possible Teleconnection Triggering Rainfall over the Yangtze River Valley |
title_fullStr |
Variation of GPS Precipitable Water over the Qinghai-Tibet Plateau: Possible Teleconnection Triggering Rainfall over the Yangtze River Valley |
title_full_unstemmed |
Variation of GPS Precipitable Water over the Qinghai-Tibet Plateau: Possible Teleconnection Triggering Rainfall over the Yangtze River Valley |
title_sort |
variation of gps precipitable water over the qinghai-tibet plateau: possible teleconnection triggering rainfall over the yangtze river valley |
publisher |
Chinese Geoscience Union |
series |
Terrestrial, Atmospheric and Oceanic Sciences |
issn |
1017-0839 2311-7680 |
publishDate |
2011-01-01 |
description |
GPS technologies show many capabilities for monitoring atmospheric water vapor. This study uses GPS data from the Japan International Co-operation Agency (JICA) and Hubei GPS network to monitor precipitable water (PW) over the Qinghai-Tibet Plateau (QTP) and over the middle Yangtze River Valley (YRV). The results show that the southern QTP is wetter than the central area due to the barring effect of the Plateau on the monsoon. PW is higher in summer than other months over either the QTP or the middle YRV. The diurnal variation of PW over the QTP is more complex than that of the middle YRV with fluctuations occurring during the whole day due to the unique topography. The minimum PW over both the QTP and the middle YRV appears in the morning; however, the peak over the QTP occurs at night while the peak over the middle YRV occurs in the early afternoon. Furthermore, PW over the QTP, especially its southern and eastern edges, are positively correlated with PW over the middle YRV. This may imply that the southern and eastern Plateaus are key regions transporting atmospheric vapor to the middle YRV. Our results indicate the possibility of finding early warning signals resulting from the intensification of the QTP atmospheric vapor leading to heavy rainfall events over the middle YRV. |
topic |
Ground-based GPS Precipitable water Qinghai-Tibet Plateau Yangtze River Valley |
url |
http://tao.cgu.org.tw/images/attachments/v222p187.pdf
|
work_keys_str_mv |
AT guirongxu variationofgpsprecipitablewaterovertheqinghaitibetplateaupossibleteleconnectiontriggeringrainfallovertheyangtzerivervalley AT chunguangcui variationofgpsprecipitablewaterovertheqinghaitibetplateaupossibleteleconnectiontriggeringrainfallovertheyangtzerivervalley AT wujieli variationofgpsprecipitablewaterovertheqinghaitibetplateaupossibleteleconnectiontriggeringrainfallovertheyangtzerivervalley AT wenzhang variationofgpsprecipitablewaterovertheqinghaitibetplateaupossibleteleconnectiontriggeringrainfallovertheyangtzerivervalley AT guangliufeng variationofgpsprecipitablewaterovertheqinghaitibetplateaupossibleteleconnectiontriggeringrainfallovertheyangtzerivervalley |
_version_ |
1725956191320801280 |