46 1 () Vol. 46 No. 1 2007 1 Journal of Xiamen University (Nat ural Science) Jan. 2007 1,2, 1,2 3, 2, 2 (1.,2. ( ), 361005) : 19992005 QuikSCA T,.,,,. ( > 10 m/ s) ()..,. : ; ;; ;QuikSCA T : P 444 :A :043820479 (2007) 0120141205, 4. 300 km, 100 km,,3 000.,, (1). 1 Fig. 1 Terrain in the vicinity of Taiwan Island. Brand [1 ] 22,. [2 ],. [3 ] :2006207210 : (2004NZ03),863 (2003AA604) 3 :spshang @xmu. edu. cn.,. Chang [ 4 ]. Benderd [5 ],., [6 ] [7 ].,,.,.,,. 1 1. 1 NASA 1999 6 QuikSCA T, Sea Winds. SeaWinds Ku, ( 0 ). 0 ;( > 20 m/ s),. [8,9 ] 0 ( 50 m/ s) ; 0
142 () 2007 2 Fig. 2 Tracks of typhoon 35 m/ s.,. NASA QuikSCA T L3 (10 m ),, 6 18. 1 800 km, 25 km,20, 2 m/ s (320 m/ s) 10 %(2030 m/ s).,19992004 (),2005 ( http :ΠΠwww. ty2 p hoon. gov. cn/ ). 1. 2,, [10 ],.,,. (), 3 : (1),. (2),.. (3), QuikSCA T 19992005, 12 (2).,. 2 2. 1 3 0313 (m/ s) Fig. 3 Sea surface wind field (m/ s) of typhoon 0313
1 : 143 4 0505 (m/ s) Fig. 4 Sea surface wind field (m/ s) of typhoon 0505 3 0313. 2003 9 1 6 ( ) (3a),,,, [3 ],,,,,,15 m/ s., [ 1,6,7 ]. (3b),12 h,20 25 m/ s ( 3b). 2 :, ;,,,,, [ 1 ].,, 3b,.,,. 9 2 6 (3c),,. 33 m/ s, 45 m/ s,.,,. (25 N ),. 3d 0313.,. ;, ;, ;. 2. 2 4 0505 2005 7 1618. 2005 7 16 18 (4a),,. 7 17 18 (4b),35 m/ s, (55 m/ s) 20 m/ s.,.,,..
144 () 2007 5 0515 (a) 0216 (b,c,d) (m/ s) Fig. 5 Sea surface wind field (m/ s) of typhoon 0515 (a) and 0216 (b,c,d),,. 7 18 6 (4c),.,() ;,, 33 m/ s,,() [3 ]. (4d),,., [3,6 ].,,,4d,. 2. 3,.,,,0515 (5a).,0216, (5b),.,,. 5c 5d 2002 9 7 0216. 5c 6,,, (33 m/ s), 40 m/ s., ;,. [3 ].,,12 h,,10 m/ s 126 E,26 N.,,. 3 3 QuikSCA T, : (1),,
1 : 145. (2),, (),,. (3).,;,. (4),,, ;,, ;,. :QuikSCA T NASA Physical Oceanogra2 phy Distributed Active Archive Center at the Jet Propulsion La2 boratory, California Institute of Technology,! : [1 ] Brand S,Blelloch J W. Changes in the characteristics of typhoons crossing the Island of Taiwan [ J ]. Monthly Weather Review,1974,102 :708-713. [2 ]. [ C] (1974 ). :,1975 :332-338. [3 ],,,. [ C ] (2003 ). 2003 :401-412. [4 ] Chang S W. The orographic effects induced by an island mountain range on propagating tropical cyclone [ J ]. Monthly Weather Review,1982,110 :1255-1270. [5 ] Bender M A, Tuleya R E, Kurihara Y. A numerical study of the effect of island terrain on tropical [ J ]. Monthly Weather Review,1987,115 :130-155. [6 ],. [J ].,1997,13 :217-226. [7 ],,. [J ].,2005,24 :15-21. [8 ] Yueh S H,Stiles B W, Tsai W Y,et al. QuikSCA T geo2 physical model f unction for tropical cyclones and applica2 tion to hurricane Floyd[J ]. Geoscience and Remote Sens2 ing,2001,39 :2601-2612. [9 ] Yueh S H,West R,Li F K,et al. Dual2polarized Ku2band backscatter signatures of hurricane ocean winds[j ]. Geo2 science and Remote Sensing,2000,38 :73-88. [10 ],. [ M ]. :,1979 :227-229. Remote Sensing Study of Sea Surface Wind Field Around Tai wan Island During Typhoon Periods C H EN De2wen 1, 2,SHAN G Shao2ping 1, 2 3,S HAN G Shao2ling 2,ZHAN G Wen2zou 2 (1. Department of Oceanography,Xiamen University, 2. State Key Laboratory of Marine Environmental Science ( Xiamen University),Xiamen 361005,China) Abstract : The QuikSCA T remote sensing data from 1999 to 2005 were used to study the features and mechanisms of sea surface wind fields around Taiwan Island during typhoon periods. Twelve westward or northwestward typhoons were selected, and separa2 ted into three categories due to the situation of typhoon track and Taiwan Island. Three typhoons were analyzed in detail as typical cases of three categories. The result showed : The strength of typhoons were underestimated to different extent and the wind direc2 tion retrieval near the typhoon center was influenced seriously by rain, however the general pattern of remote sensing wind fields were reasonable. Terrain had prominent effect s on the formation of wind field features ; it caused some interesting phenomena, such as strong wind ( > 10 m/ s) appearing earlier in Taiwan Strait, the formation of leeward trough and " corner flow" to the flanks of Center Mountain Range (CMR) and downstream of the tips of CMR respectively. Whether the strong winds appeared earlier still de2 pended on the location of the typhoon center. Along different category of tracks, the location and scope of "corner flow" and leeward trough were different. Key words : sea surface wind field ;terrain ; Taiwan Island ;typhoon ;QuikSCA T