上层海流对台风的反应.ppt

《上层海流对台风的反应.ppt》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、UpperOceanResponsetoahurricane(JamesF.Price1981)ZhuShunliPukyongNationalUniversityContents1.Introduction2.Reviewofobservations3.Amodeloftheupperoceanresponse4.SpecificationoftheEB-10/Eloisecase5.Overviewoftheresponse6.ComparisonofthemodelsolutionwiththeEB-10data7N

2、umericalexperiments8.Conclusion1.IntroductionQuestionWhatisthereasonforSSTresponsetoahurricaneandrightwardbias?2.Howdoestheresponsedependuponsuchfactorsasthehurricanetranslationspeed,theoceaninitialcondition,etc.?3.Whatroledononlocaldynamicsplayintheupperoceanresp

3、onse4.Isthereevidencethatair-seatransfercoefficientsincreasesignificantlyunderhurricaneconditions?2.Reviewofobservationsa.HydrographicsurveysTable1HydrographicstudiesoftheseasurfacetemperatureresponsetohurricaneFig.1ResponseofSSTacrossthetrackofhurricaneElla&Respo

4、nseofsubsurfacetemperatureacrossthetrackofhurricaneEllaFig2SSTaroundthetrackofhurricaneTess&TemperaturesectionABmadeacrossthetrackofTessb.Buoy/hurricaneencountersa.HydrographicsurveysFig.3NationalHurricaneCenterstormtracksofhurricanesEloise(1975)andBelle(1976)1)EB

5、-10/EloiseFig4MeteorologicalmeasurementsformEB-10duringthepassageofhurricaneEloiseFig5.OceantemperaturefromEB-10duringandafterthepassageofHurricaneEloise2)EB-04/EloiseFig6.Air-seameasurement(upper/lowerpanels)fromEB-04duringthepassageofEloise2)EB-15/EloiseFig7Air-

6、seameasurement(upper/lowerpanels)fromEB-15duringthepassageofBelle3.Amodeloftheupperoceanresponsea.ScalesandphysicalapproximationsFig8.SchematicplanviewofthenumericalmodelPhysicalapproximationsareasfollows:1)TheCoriolisparameterfisconstant,pressureishydrostatic,the

7、Boussinespapproximationanddiffusiveprocessesareexcluded2)Density:Whereα=-3.3*10-4andβ=7.6*10-4aretheappropriatethermalandhalineexpansioncoefficientsandρ0=1.0235*103kgm-3isthereferencedensity3)Theseasurfaceistreatedasarigidlid(excludesthebarotropicmode).4)Thesubthe

8、rmoclineoceanistakenasinfinitydeepandunabletosustainapressuregradient。5）Thetemperatureandsalinityinlayer2areassumedtohavedepthdependence。Thevelocitywith