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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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同化海温观测数据研究波浪破碎对海洋上层结构的影响*
Keywords: 海表粗糙度,波能因子,同化,波浪破碎
Abstract:
？首先利用考虑波浪破碎效应的mellor-yamada2.5阶湍流闭合方案,探讨了海表温度(sst)对波能因子a和charnock数b的敏感性问题。然后采用变分数据同化途径,基于papa海洋天气站(owspapastation)的上层温度观测数据,对该参数化方案中的波能因子a和charnock数b两个参数进行了最优估计。最优估计的结果表明,当a约为167、b约为4.1×105时,价值函数达到最小值。利用上述参数的最优估计进行海温的数值模拟,可以较好地反映出海表温度的日变化和月变化过程,模拟的上混合层的温度和深度也与观测较为一致。最后利用以上参数的最优估计结果对湍动能方程进行诊断计算,研究了波浪破碎对海洋上层湍能量收支的影响。
| [1] | phillipsom.dynamticsoftheupperocean[m].cam-bridge:cambridgeuniversitypress,1977:366.[2]drennanwm,donelanma,terrayea.oceanicturbulencedissipationmeasurementsinswade[j].jphysoceanogr,1996,26:808–815.[3]craigpd,bannerml.modelingwave-enhancedturbulenceintheoceansurfacelayer[j].jphysoceanogr,1994,24:2546-2559.[4]charnockh.windstressonawatersurface[j].jroymeteorsoc,1955,81:639-640.[5]terrayea,donelanma,agrawalyc,etal.estimatesofkineticenergydissipationunderbreakingwaves[j].jphysoceanogr,1996,26:792–807.[6]krauseb,turnerjs.aone-dimensionalmodeloftheseasonalthermocline.ii.thegeneraltheoryanditsconse-quences[j].tellus,1967,19:98-105.[7]denmankl,miyakem.upperlayermodificationatoceanstationpapa:observationsandsimulation[j].jphysoceanogr,1973,3:185-196.[8]gasparp.modellingtheseasonalcycleoftheupperocean[j].jphysoceanogr,1988,18:161-180.[9]byejat.thecouplingofwavedriftandwindvelocityprofiles[j].jmarres,198846:457-472.[10]staceymw.simulationsofthewind-forcednear-surfacecirculationinknightinlet:aparameterizationoftheroughnesslength[j].jphysoceanogr,1999,29:1363-1367.[11]mellorgl,blumbergaf.wavebreakingandoceansurfacelayerthermalresponse[j].jphysoceanogr,2004,34:693-698.[12]donelanma.air-seainteraction[j].oceanengineeringscience,1990,9:239-292.[13]smithsd.seasurfacewindstressanddragcoefficients:thehexosresults[j].bound-layermeteor,1992,60:109-142.[14]janssenpaem.reply[j].jphysoceanogr,2001,31:2532-2544.[15]gemmrichjr,farmerdm.near-surfaceturbulen-ceandthermalstructureinawind-drivensea[j].jphysoceanogr,1998,29:480–499.[16]mellorgl,yamadat.developmentofaturbulenceclosuremodelforgeophysicalfluidproblems.rev[j].geo-physspacephys,1982,20:851–875.[17]zhaod,meic.influenceofair-seafluxesandbreakingwavesonoceanicmixedlayer,proceedingsoftheeighteenthinternationaloffshoreandpolarengineeringconference,vancouver,2008,563-568.[18]孙群.海浪破碎对海洋上混合层影响的数值研究[d].青岛:中国海洋大学,2003:53.[19]孙群,管长龙,宋金宝.海浪破碎对海洋上混合层中湍能量收支的影响[j].海洋与湖沼,2006,37(1):69-74.[20]sunq,guancl.wavebreakingonturbulentenergybudgetintheoceansurfacemixedlayer[j].chinesejournalofoceanologyandlimnology,2008,26(1):9-13.
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