wrfv3.1用戶手冊之中文版（非常難得之翻譯版）

1、Chapter1:Overview翻譯:by澳洲的牛牛laiwf由于譯者水平有限其中一定存在翻譯不妥的地方希望大家能幫忙指正IntroductionIntroductionTheAdvancedResearchWRF(ARW)modelingsystemhasbeenindevelopmentfthepastfewyears.ThecurrentreleaseisVersion3availablesinceApril2008.TheAR

2、Wisdesignedtobeaflexiblestateoftheartatmosphericsimulationsystemthatisptableefficientonavailableparallelcomputingplatfms.TheARWissuitablefuseinabroadrangeofapplicationsacrossscalesrangingfrommeterstothoussofkilometersinc

3、luding:?Idealizedsimulations(e.g.LESconvectionbaroclinicwaves)?Parameterizationresearch?Dataassimilationresearch?Fecastresearch?RealtimeNWP?Coupledmodelapplications?Teaching簡介簡介AdvancedResearchWRF(ARW)模式系統(tǒng)在過去的數(shù)年中得到了發(fā)展。最近

4、公布了第三版，從2008年4月開始可供使用。ARW是靈活的，最先進的大氣模擬系統(tǒng)，它易移植，并且有效的應(yīng)用于各種操作系統(tǒng)。ARW適用于從米到成千上萬公里尺度的各種天氣系統(tǒng)的模擬，它的功能包括：?理想化模擬（如，LES，對流，斜壓波）?參數(shù)化研究?數(shù)據(jù)同化研究?預(yù)報研究?實時數(shù)值天氣預(yù)報?耦合模式應(yīng)用?教學(xué)TheMesoscaleMicroscaleMeteologyDivisionofNCARiscurrentlymaintaining

5、supptingasubsetoftheoverallWRFcode(Version3)thatincludes:?WRFSoftwareFramewk(WSF)?AdvancedResearchWRF(ARW)dynamicsolverincludingonewaytwowaynestingmovingnest.?TheWRFPreprocessingSystem(WPS)?WRFVariationalDataAssimilation

6、(WRFVar)systemwhichcurrentlysuppts3DVARcapability?NumerousphysicspackagescontributedbyWRFpartnerstheresearchcommunity?SeveralgraphicsprogramsconversionprogramsfothergraphicstoolsWPSThisprogramisusedprimarilyfrealdatasimu

7、lations.Itsfunctionsinclude1)definingsimulationdomains2)interpolatingterrestrialdata(suchasterrainlusesoiltypes)tothesimulationdomain3)degribbinginterpolatingmeteologicaldatafromanothermodeltothissimulationdomain.Itsmain

8、featuresinclude:GRIB12meteologicaldatafromvariouscentersaroundthewldMapprojectionsf1)polarstereographic2)LambertConfmal3)Mercat4)latitudelongitudeNestingUserinterfacestoinputotherstaticdataaswellasmetdata這個程序的主要用于實時數(shù)值模擬。

9、其中包括：1）定義模擬區(qū)域；2）插值地形數(shù)據(jù)（如地勢，土地類型，以及土壤類型）到模擬區(qū)域；3）從其他模式結(jié)果中細致網(wǎng)格以及插值氣象數(shù)據(jù)到此模擬區(qū)域。它的主要特點包括：?GRIB12格式全球格點氣象數(shù)據(jù)?地圖投影有1）極地投影，2）蘭伯特保角投影，3）麥卡托投影以及4）經(jīng)緯度投影嵌套?由用戶接口輸入其他數(shù)據(jù)及met數(shù)據(jù)WRFVarThisprogramisoptionalbutcanbeusedtoingestobservationsin

10、totheinterpolatedanalysescreatedbyWPS.ItcanalsobeusedtoupdateWRFmodelsinitialconditionwhenWRFmodelisrunincyclingmode.Itsmainfeaturesareasfollows.ItisbasedonincrementalvariationaldataassimilationtechniqueConjugategradient

11、methodisutilizedtominimizedthecostfunctioninanalysiscontrolvariablespaceAnalysisisperfmedonunstaggeredArakawaAgridAnalysisincrementsareinterpolatedtostaggeredArakawaCgriditgetsaddedtothebackground(firstguess)togetfinalan

12、alysisatWRFmodelgridConventionalobservationdatainputmaybesuppliedbothinII“PREPBUFR”fmatvia“obsproc”utilityMultipleradardata(reflectivity&radialvelocity)inputissuppliedthroughIIfmatHizontalcomponentofthebackground(firstgu

13、ess)errisrepresentedviarecursivefilter(fregional)powerspectrum(fglobal).TheverticalcomponentisappliedthroughprojectionsonclimatologicallygeneratedaveragedeigenvectsitscrespondingeigenvaluesHizontalverticalbackgrounderrsa

14、renonseparable.EacheigenvecthasitsownhizontalclimatologicallydeterminedlengthscalePreconditioningofbackgroundpartofthecostfunctionisdoneviacontrolvariabletransfmUdefinedasB=UUTItincludes“gen_be”utilitytogeneratetheclimat

15、ologicalbackgrounderrcovarianceestimateviatheNMCmethodensembleperturbationsAutilityprogramtoupdateWRFboundaryconditionfileafterWRFVar該程序是可選擇的，但可用于將觀測數(shù)據(jù)融入到WPS所產(chǎn)生的插值分析中。它還可以在WRF模式處在循環(huán)模式運行時，用于更新WRF模式的初始條件.它的主要特點如下：?它是基于增量變分