MICROSTRUCTURES AND TEMPORAL VARIATION CHARACTERISTICS DURING A SEA FOG EVENT ALONG THE WEST COAST OF THE TAIWAN STRAIT

(整期优先)网络出版时间:2017-02-12
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Synopticsystemsandmicrophysicalpropertiesassociatedwithaseafogeventareanalyzedbasedonthemeasurementsofvisibility,meteorologicalelementsandfogdropletspectrumfromacomprehensivefieldcampaigninXiamen,Fujianprovinceduringspring2013.Theinfluencesofmeteorologicalelementsonthemicrostructuresoftheseafogarealsodiscussed.Theresultsshowedthatthewindspeedanddirectionchangedsuddenlyduringtheintermittentanddispersephasesoftheseafog.Liquidwatercontent,numberconcentrationandaveragediametervariedobviouslyinthedevelopment,matureanddispersephasesoftheseafog.Theburstre-enforcementofseafogwasaccompaniedbyexplosivebroadeningoffogdropletspectrum;averagediameter,numberconcentrationandliquidwatercontentincreasedsharply;andbackgroundmeteorologicalconditionsalsochangedsignificantly.Themicrostructuresfluctuatedintenselyduetochangesinturbulence,radiationandmeteorologicalconditionsatdifferentstages,includingnucleation,condensation,coagulation,andevaporation,aswellasthediscontinuityofspatialdistributionofdroplets.