NCEP资料时日月下载及说明文档格式.docx
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NCEP资料时日月下载及说明文档格式.docx
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air.sig995.YYYY.nc
4xDailyAirtemperatureatsigmalevel995
degK
29.2MB
抬升指数
lftx.sfc.YYYY.nc
4xDailySurfaceLiftedIndex
最佳抬升指数
lftx4.sfc.YYYY.nc
4xDailyBest(4-layer)LiftedIndex
上升速度
omega.sig995.YYYY.nc
4xDailyomegaatsurface
Pascal/s
潜在温度
pottmp.sig995.YYYY.nc
4xDailypotentialtemperatureatsigmalevel995
大气可降水
pr_wtr.eatm.YYYY.nc
4xDailyPrecipitableWaterforentireatmosphere
kg/m^2
本站气压
pres.sfc.YYYY.nc
4xDailyPressureatsurface
Pascals
相对湿度
rhum.sig995.YYYY.nc
4xDailyrelativehumidityatsigmalevel995
%
海平面气压
slp.YYYY.nc
4xDailySeaLevelPressure
风速(u分量)
uwnd.sig995.YYYY.nc
4xDailyu-windatsigmalevel995
m/s
风速(v分量)
vwnd.sig995.YYYY.nc
4xDailyv-windatsigmalevel995
注:
文件命中YYYY代表年份,下同。
高空分时日资料下载:
//ftp.cdc.noaa.gov/Datasets/ncep.reanalysis/pressure/
air.YYYY.nc
4xDailyAirtemperature
499MB
位势高度
hgt.YYYY.nc
omega.YYYY.nc
351MB
rhum.YYYY.nc
234MB
绝对湿度
shum.YYYY.nc
4xDailyspecifichumidity
kg/kg
uwnd.YYYY.nc
497MB
vwnd.YYYY.nc
二、日平均资料
地面日资料下载路径:
//ftp.cdc.noaa.gov/Datasets/ncep.reanalysis.dailyavgs/surface/
1948至今,2.5×
meanDailyAirtemperatureatsigmalevel995
meanDailySurfaceLiftedIndex
meanDailyBest(4-layer)LiftedIndex
meanDailyomegaatsurface
meanDailypotentialtemperatureatsigmalevel995
meanDailyPrecipitableWaterforentireatmosphere
meanDailyPressureatsurface
meanDailyrelativehumidityatsigmalevel995
meanDailySeaLevelPressure
meanDailyu-windatsigmalevel995
meanDailyv-windatsigmalevel995
高空日资料下载路径:
//ftp.cdc.noaa.gov/Datasets/ncep.reanalysis.dailyavgs/pressure/
层次
meanDailyAirtemperature
124MB
17
meanDailyGeopotentialheight
m
meanDailyOmega
87.8MB
12
meanDailyrelativehumidity
58.5MB
8
meanDailyspecifichumidity
meanDailyU-wind
meanDailyVwind
17层(1000、925、850、700、600、500、400、300、250、200、150、100、70、50、30、20、10hPa)
12层(1000、925、850、700、600、500、400、300、250、200、150、100hPa)
8层(1000、925、850、700、600、500、400、300hPa)
三、月平均资料
地面月平均资料下载路径:
//ftp.cdc.noaa.gov/pub/Datasets/ncep.reanalysis.derived/surface/
air.mon.mean.nc
MonthlyMeanAirTemperature
30.4MB
pr_wtr.mon.mean.nc
MonthlyMeanofPrecipitableWaterContent
pres.mon.mean.nc
MonthlyMeanofSurfacePressure
rhum.mon.mean.nc
MonthlyMeanofRelativeHumidity
slp.mon.mean.nc
SeaLevelPressure
uwnd.mon.mean.nc
Monthlysurfacezonalwind
vwnd.mon.mean.nc
Monthlysurfacemeridionalwind
风速
wspd.mon.mean.nc
Monthlysurfacewindspeed
其他
17层
hgt.mon.mean.nc
omega.mon.mean.nc
shum.mon.mean.nc
pottmp.mon.mean.nc
NCEP/NCARReanalysis1:
Summary
One-LineDescription:
*NCEP/NCARReanalysis1
TemporalCoverage:
*4-timesdaily,dailyandmonthlyvaluesfor1948/01/01topresent
*Longtermmonthlymeans,derivedfromdataforyears1968-1996
SpatialCoverage:
*GlobalGrids
Levels:
*17Pressureleveland28sigmalevels.N/A
UpdateSchedule:
*Daily
Wehaveseparatedthedatadocumentationintosevensections:
*Pressurelevel
*Surface
*SurfaceFluxes
*OtherFluxes
*Tropopause
*DerivedData
*SpectralCoefficients
UsageRestrictions:
*None
DetailedDescription:
*TheNCEP/NCARReanalysis1projectisusingastate-of-the-art
analysis/forecastsystemtoperformdataassimilationusingpast
datafrom1948tothepresent.Alargesubsetofthisdatais
availablefromPSDinitsoriginal4timesdailyformatandas
dailyaverages.However,thedatafrom1948-1957isalittle
different,intheregular(non-Gaussian)griddeddata.Thatdata
wasdoneat8timesdailyinthemodel,becausetheinputs
availableinthaterawereavailableat3Z,9Z,15Z,and21Z,
whereasthe4xdailydatahasbeenavailableat0Z,6Z,12Z,and
18Z.Theselattertimeswereforecastedandthecombinedresult
forthisearlyerais8xdaily.Thelocalingestionprocesstook
onlythe0Z,6Z,12Z,and18Zforecastedvalues,andthusonly
thosewereusedtomakethedailytimeseriesandmonthlymeans
here.
Caveats:
*Pleasereadtheproblemlistbeforeusingthedata.
RelatedFileNaming&
StructureInformation:
FileNames:
*Seeindividualsections.Datain/Datasets/ncep.reanalysis/,
Datasets/ncep.reanalysis.dailyavgs/,
/Datasets/ncep.reanalysis.derived/
*Datacanbeftp'
dfromftp.cdc.noaa.gov
DatasetFormatandSize:
*PSDstandardNetCDFmostare(packed).
*Ifyouwouldlikedatasetsonamediasuchastape,youwillneed
togetthemfromanotherinstitution.NCAR(link)providessucha
servicefortheirdatasets.
MissingData:
*Missingdataisflaggedwithavalueof32767sor9.36e36f..
Citation:
*Fordatasetsource,pleasecite:
Kalnayetal.,TheNCEP/NCAR
40-yearreanalysisproject,Bull.Amer.Meteor.Soc.,77,437-470,
1996.
*Pleasenote:
IfyouacquireNCEPReanalysisdataproductsfrom
PSD,weaskthatyouacknowledgeusinyouruseofthedata.This
maybedonebyincludingtextsuchasNCEPReanalysisdata
providedbytheNOAA/OAR/ESRLPSD,Boulder,Colorado,USA,from
theirWebsiteathttp:
//www.esrl.noaa.gov/psd/inanydocuments
orpublicationsusingthesedata.Wewouldalsoappreciate
receivingacopyoftherelevantpublications.ThiswillhelpPSD
tojustifykeepingtheNCEPReanalysisdatasetfreelyavailable
onlineinthefuture.Thankyou!
References:
*March,1996BAMS
OriginalSource:
*NOAANationalCenterforEnvironmentalPrediction
Contact:
*PhysicalSciencesDivision:
DataManagement
NOAA/ESRL/PSD
325Broadway
Boulder,CO80305-3328
esrl.psd.data@noaa.gov
U.S.DepartmentofCommerce|NationalOceanicandAtmospheric
Administration
EarthSystemResearchLaboratory
http:
//www.esrl.noaa.gov/psd/data/gridded/data.ncep.reanalysis.html
SiteMap
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