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1、InternationalConferenceonInformationScienceandTechnologyMarch26-28,2011Nanjing,Jiangsu,ChinaTheSeasonalityandLocalityofLowFrequencyOscillationbyWaveletAnalysisWenChen,XiefeiZhi,HaoYangandJianjunLiu[15].SomescientiststriedtouseMJOtoconductextendedAbstract—Morletwaveletanalysisandotherstatistic
2、almethodsareappliedtoinvestigatetheseasonalityandlocalityofrangeforecast[16].Moreover,themotionoftheEastAsianthelowfrequencyoscillation(LFO)intheatmospherebasedonsummermonsoonwhichissignificantlyinfluencedbythethehorizontalwindsat850hPaand200hPafromNCEP/NCARMJOhasagreatimpactontheclimateinChi
3、na[17].reanalysesIdata.TheanalysesareconductedinfourdifferentUnderstandingthetemporalandspatialvariationsoftheareasincludingIndianOcean,thetropicalwesternPacific,thewesternPacificsubtropicalhighareaandtheUral-OkhotskMJOishelpfulforweatherforecasting.TheMJOitselfhasbelt.complexseasonalvariatio
4、ns[18],[19].ItintensifiedintheTheresultsshowthatsignificantseasonalvariationsexistinwinterhemisphereandweakenedinsummer.Gutzler[20]abovementionedareas.Theseseasonalvariationsaremainlyexaminedthehorizontalwindsat850hPaand150hPaindefinedasfourpatterns,namely,theperiodvariationfromlongdifferents
5、easonsinIndianOceanandthePacific.Hartmanntoshortperiod(PatternI),theperiodchangefromshorttolong[21]alsopointedoutthattheperiodlengthofthetropicalperiod(PatternII),theinconspicuousperiodvariation(PatternLFOisabout50dinwinterwhileitis35dinsummer.ButinIII),andbranchingwaveletenergy(PatternVI).In
6、addition,anthewesternPacific,theperiodoftheLFOisabout20-25dinterestingphenomenon,thebranchingWE,existsinallseasonsfromSeptembertoDecember.Zhietal.[22]discoveredthatandareas.Moreover,thevariationsoftheLFOanditsperiodchangewithspacearefoundinthesameseason.theLFOtakesonnoticeableannualcyclefeatu
7、res.Thespatial/temporallocalityoftheMJOmaybeinterpretedinI.INTRODUCTIONtermsofnonlinearinteractionbetweentropicalwaves,andmodulationofdiabaticheatingontheMJOperiods.ZhangetHEatmosphericstateisoftendescribedby‘space’andT‘time’atdifferentscales
