©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:2005-05-09:(1967-),,,:1003-6598(2005)03-0046-03(,550002):1998,,,:;;:C931.2:C11998,,,,,,2,,2000,,,21,,,,,,2001,,,,,642005329JournalOfGuizhouMeteorologyVoL.29NO.3©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2001);,68,,,:,;,,,3,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,6,,,,,,,,,,,,:,,,,,,,,44.1742005329:VoL.29NO.3©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,6,,,,,,,200391,,,,,,2001,,,,,2004,,,,4.2,,,2001,,,,,:,,,9,,;64%,84800;,,,,,,,,,,(MM5),,(),,,;16,,;,,213,119,;,,100%,68%,27%,4.3,,,6;8,2003,,,,2004,842005329JournalOfGuizhouMeteorologyVoL.29NO.3