GPS observations of precipitable water dynamics associated with typhoon Zeb (1998)

Yuei An Liou, Cheng Yung Huang, Chun Chieh Wu

研究成果: 會議貢獻類型會議論文同行評審

摘要

Spatial and temporal distributions of precipitable water (PW) during the passage of a typhoon are monitored by ground-based GPS (Global Positioning System) receivers deployed by Central Weather Bureau (CWB) of Taiwan. GPS-observed PW time series demonstrate an expected trend that the PW amount is in general high before and during the occurrence of the typhoon and low after the typhoon event. That is, PW increased from about 5 cm on DoY (Day of Year) 285 (October 13) to near 8 cm or so on DoY 288 (October 16) when Typhoon Zeb was striking Taiwan, and, then, decreased to 2-3 cm after passage of Zeb. GPS-observed PW is compared with that predicted by the Penn State-NCAR non-hydrostatic mesoscale model version 5 (MM5). With an acceptable assumption that GPS-observed PW is regarded as reference, MM5-predicted PW mimics that observed by GPS except that there are some discrepancies between them. This indicates that assimilation of GPS-observed PW into atmospheric circulation models is potentially helpful to numerical weather prediction (NWP) models.

原文???core.languages.en_GB???
頁面3027-3029
頁數3
出版狀態已出版 - 2000
事件2000 International Geoscience and Remote Sensing Symposium (IGARSS 2000) - Honolulu, HI, USA
持續時間: 24 7月 200028 7月 2000

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???event.eventtypes.event.conference???2000 International Geoscience and Remote Sensing Symposium (IGARSS 2000)
城市Honolulu, HI, USA
期間24/07/0028/07/00

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