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Effects of local circulations on rai...

Yeh, Hsi-Chyi.

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Effects of local circulations on rainfall distributions during TAMEX.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Effects of local circulations on rainfall distributions during TAMEX./
作者:	Yeh, Hsi-Chyi.
面頁冊數:	181 p.
附註:	Source: Dissertation Abstracts International, Volume: 60-05, Section: B, page: 2179.
Contained By:	Dissertation Abstracts International60-05B.
標題:	Physics, Atmospheric Science. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9932059
ISBN:	9780599323223

Effects of local circulations on rainfall distributions during TAMEX.
Yeh, Hsi-Chyi.

Effects of local circulations on rainfall distributions during TAMEX. - 181 p.

Source: Dissertation Abstracts International, Volume: 60-05, Section: B, page: 2179.

Thesis (Ph.D.)--University of Hawai'i at Manoa, 1999.

This item must not be sold to any third party vendors.

The orographic effects on the mesoscale flow and rainfall distributions over Taiwan are analyzed based on TAMEX (Taiwan Area Mesoscale Experiment) data and numerical experiments using MM5 (Pennsylvania State University (PSU)/NCAR mesoscale model version 5). The rainfall maxima during TAMEX occurred on the windward slopes of the mountains under the prevailing southwesterly monsoon flow. About fifty percent of the rainfalls there was observed during non-frontal periods as orographic rain showers.

ISBN: 9780599323223Subjects--Topical Terms:

1019431
Physics, Atmospheric Science.

Effects of local circulations on rainfall distributions during TAMEX.
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100 1 $a Yeh, Hsi-Chyi. $3 3174258
245 1 0 $a Effects of local circulations on rainfall distributions during TAMEX.
300 $a 181 p.
500 $a Source: Dissertation Abstracts International, Volume: 60-05, Section: B, page: 2179.
500 $a Chairperson: Yi-Leng Chen.
502 $a Thesis (Ph.D.)--University of Hawai'i at Manoa, 1999.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a The orographic effects on the mesoscale flow and rainfall distributions over Taiwan are analyzed based on TAMEX (Taiwan Area Mesoscale Experiment) data and numerical experiments using MM5 (Pennsylvania State University (PSU)/NCAR mesoscale model version 5). The rainfall maxima during TAMEX occurred on the windward slopes of the mountains under the prevailing southwesterly monsoon flow. About fifty percent of the rainfalls there was observed during non-frontal periods as orographic rain showers.
520 $a In the northwestern coastal region of Taiwan, the total rains were more pronounced than other windward coastal regions. More than eighty percent of the rains occurred during the passage of frontal systems. From a case study during TAMEX IOP 3, moderate rainfalls (&sim;40 mm/6hr) were observed along the northwestern coast of Taiwan associated with the arrival of three successive rainbands, during 1000--1600 LST. This event occurred within the prevailing southwesterly monsoon flow regime ahead of the 850-hPa trough. These rainbands formed within the Taiwan Strait. The intensification of the rainband occurred off the northwestern coast of Taiwan where the deflected southerly flow converged with the prevailing southwesterlies modified by the storm-induced westerlies.
520 $a From the numerical experiments, when uniform southwesterlies are specified to impinge on the island topography in the absence of synoptic-scale forcing, the MM5 simulates the orographically induced low-level strong winds. However, the offshore convergence zone and the significant rainfall along the northwestern coast are not simulated. For the experiment with synoptic-scale forcing but without the island topography over Taiwan, a large-scale cloud band is simulated within the Taiwan Strait without the localized rainfall maximum along the northwestern coast. The coastal rainfall maximum is simulated, only when the influences of the synoptic-scale forcing and the orographic effects are included. These results indicate that the offshore convergence zone and the observed rainfall maximum along the northwestern coast result from a combination of the synoptic-scale and the orographic forcing and the feedback of the convection.
590 $a School code: 0085.
650 4 $a Physics, Atmospheric Science. $3 1019431
650 4 $a Environmental science. $3 677245
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710 2 $a University of Hawai'i at Manoa. $3 1017511
773 0 $t Dissertation Abstracts International $g 60-05B.
790 $a 0085
791 $a Ph.D.
792 $a 1999
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9932059