简介：Theseasonalvariabilityofthesignificantwaveheight(SWH)intheSouthChinaSea(SCS)isinvestigatedusingthemostup-to-dategriddeddailyaltimeterdatafortheperiodofSeptember2009toAugust2015.TheresultsindicatethattheSWHshowsauniformseasonalvariationinthewholeSCS,withitsmaximaoccurringinDecember/JanuaryandminimainMay.Throughouttheyear,theSWHintheSCSisthelargestaroundLuzonStrait(LS)andthengraduallydecreasessouthwardacrossthebasin.Thesurfacewindspeedhasasimilarseasonalvariation,butwithdifferentspatialdistributionsinmostmonthsoftheyear.FurtheranalysisindicatesthattheobservedSWHvariationsaredominatedbyswell.Thewindseaheight,however,ismuchsmaller.ItisthethelargestintworegionssouthwestofTaiwanIslandandsoutheastofVietnamCoastduringthenortheasterlymonsoon,whilethelargestinthecentral/southernSCSduringthesouthwesterlymonsoon.Theextremewaveconditionalsoexperiencesasignificantseasonalvariation.InmostregionsofthenorthernandcentralSCS,themaximaofthe99thpercentileSWHthatarelargerthantheSWHtheoreticallycalculatedwiththewindspeedforthefullydevelopedseasmainlyappearinAugust–November,closelyrelatedtostrongtropicalcycloneactivities.Comparedwithpreviousstudies,itisalsoimpliedthatthewaveclimateinthePacificOceanplaysanimportantroleinthewaveclimatevariationsintheSCS.

简介：Inthisstudy,about220satelliteimagesbetween2000and2012wereobtainedfromFY-series,MODIS,CBERS,HJ-1AandHJ-1BtoestimatetheimpactofduststormsontheSouthYellowSea(SYS),whichserveasanimportantsourceofparticlesthere.Theanalyzingresultsfromtheimagessupportatotaloccurrenceof88duststorms(includingthelocally-generateddustyweather)thataffectedtheSYSduring2000–2012.Theannualoccurrencewasabout4–10times(10timesin2000and2004;fourtimesin2009and2012),predominantlyinMarch(29%),April(33%)andMay(22%).Bymappingthedistributionoftheirfrequency,theduststormsinfluencingtheSYSwerefoundprimarilymovingfromthenorthwest(39times,44.3%)andwest(37times,42%)tothestudyregionwithonly11duststorms(12.5%)comingfromthenorthand1duststorm(1%)fromthesouthwest.Weestimatedthatanannualamountof0.5–3.5milliontonsofsedimentparticleswasbroughttotheSYSbytheduststormsduring2000–2012.

简介：Newsatellite-derivedlatentandsensibleheatfluxesareperformedbyusingWindSatwindspeed,WindSatseasurfacetemperature,theEuropeanCentreforMedium-rangeWeatherForecasting(ECMWF)airhumidity,andECMWFairtemperaturefrom2004to2014.The55mooredbuoysareusedtovalidatethembyusingthe30minand25kmcollocationwindow.Furthermore,theobjectivelyanalyzedair-seaheatfluxes(OAFlux)productsandtheNationalCentersforEnvironmentalPrediction-NationalCenterforAtmosphericResearchreanalysis2(NCEP2)productsarealsousedforglobalcomparisons.ThemeanbiasesofsensibleandlatentheatfluxesbetweenWindSatfluxresultsandbuoyfluxdataare–0.39and–8.09W/m~2,respectively.Inaddition,therootmean-square(RMS)errorsofthesensibleandlatentheatfluxesbetweenthemare5.53and24.69W/m~2,respectively.TheRMSerrorsofsensibleandlatentheatfluxesareobservedtograduallyincreasewithanincreasingbuoywindspeed.Thedifferenceshowsdifferentcharacteristicswithanincreasingseasurfacetemperature,airhumidity,andairtemperature.ThezonalaveragelatentfluxeshavesomehighregionswhicharemainlylocatedinthetradewindzoneswherestrongwindscarrydryairinJanuary,andthemaximumvaluecentersarefoundintheeasternwatersofJapanandontheUSeastcoast.Overall,theseasonalvariabilityispronouncedintheIndianOcean,thePacificOcean,andtheAtlanticOcean.Thethreesensibleandlatentheatfluxeshavesimilarlatitudinaldependencies;however,somedifferencesarefoundinsomelocalregions.