塔克拉玛干沙漠北缘哈德地区近地层气象要素特征分析

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1、AbstractWeUtilizethewindvelocity，temperatureandhumiditydatefrom2011，whichweregatheredfromthe10mobservingtowergradientdetectingsysteminXiaotangandHadeinthenorthmarginofTaklimakanDesert，Wewereanalyzedthecharacteristicsofmicrometeorologicalcharacteristicsandprof

2、ilechangerule，studiedofradiationbudgetandthechangecharacteristicsofsoiltemperatureandmoisture，thefollowingconclusionsare:1.Theruleofprofilesandverticalgradientofwindvelocity，temperatureandhumidity(1)Thediurnalvariationruleofthewindvelocity,temperatureandhumid

3、itygradientwereobvious.AppearingtemperatureandhumidityinversionCharacteristics.Theannualaveragewindspeedis2.8m/s，Averagetemperatureis11.2℃，relativehumidityvariationamplitudeof25~55%；(2)Thewindvelocityprofileisgivenprioritytowithlogarithmicandexponential,Tempe

4、ratureprofiletransitionaltype，insolationtype，radianttypehasappeared.Theaveragespecifichumidityis0.67，2.56，6.74，2.78g/kginthefourseasons；(3)TheleadingwinddirectionisNEin2011，SWinJanuaryandNinJuly，2mand10mwindfrequencyaredifferent；2.Thesurfaceradiationandenergy

5、balancecharacteristics(1)Theannualaveragealbedois0.303；(2)Theeffectiveradiation1，4，7，10monthdailyamountare2.3，6.2，6.9，2-1–2–13.1MJ.m.d，thetotalnetradiationare3.8，7.6，8.8，6.6，MJ..d；(3)Theatmosphericlongwaveradiation，totalradiation，groundlong-waveradiation，refl

6、ectedradiation，netradiation，effectiveradiationare:9769.1,5772.4,-212118.1,1668.0,2361.5MJ.M.NetradiationpeakedinJune,whentheothersallpeakedinJuly，themaximumvalueare1043.3，686.7，1302.3，196.6，240.5，–2271.5/MJ.M；3.Thechangesofsoiltemperatureandhumidity(1)Soiltem

7、peraturechangeisinverted"U"typein0～40cm，themoredeeper，thelesschangoftemperature.Itshows05:00coldcenterand13:00warmsemi-closureisothermalchange，asthecoreofthelayersofaveragetemperatureof13.8℃,13.7℃,13.6℃,13.7℃and13.8℃，thesoiltemperatureindifferentseasonscoldan

8、dwarmcentertimeisdifferent；II(2)Thesoilmoisturebelow0.35%throughouttheyear，10，20，40cmdepthrespectivelyinmay，JulyandAugustuptothemaximum，thesoilmoisturemainlyconcentratedinthemiddletier10～