資料庫

Brief Description:

 ERA-Interim analysis daily products from 1 Jan 1979 can be accessed by MARS users (expver=1, class=ei). Also available are twice daily ten-day forecasts and monthly means. The ERA-Interim archive is more extensive than that for ERA-40, e.g. the number of pressure levels is increased from ERA-40's 23 to 37 levels and additional cloud parameters are included. ERA-Interim products are also publicly available on the ECMWF Data Server, at a 1.5° resolution, including several products that were not available for ERA-40. ERA-Interim using a much improved atmospheric model and assimilation system from those used in ERA-40, ERA-Interim represents a third generation reanalysis. Several of the inaccuracies exhibited by ERA-40 such as too-strong precipitation over oceans from the early 1990's onwards and a too-strong Brewer-Dobson circulation in the stratosphere, were eliminated or significantly reduced. ERA-Interim now extends back to 1979 and the analysis continues to be extended forward in near-real-time.

 

Temporal Coverage:

Surface
Monthly values for 1979/01 – 2013/12.
Daily values for 1979/01-2013/12.
4-times daily values for 1979/01 – 2012/12.
Pressure level
Monthly values for 1979/01 – 2012/12.
Daily values for 1979/01-2013/12.
4-times daily values for 1979/01 – 2013/12.


Spatial Coverage:

0.25 degree latitude x 0.25 degree longitude global grid (721x1440).
90.0N - 90.0S, 0.0E - 359.75E.

0.75 degree latitude x 0.75 degree longitude global grid (241x480).
90.0N - 90.0S, 0.0E - 359.25E.

1.5 degree latitude x 1.5 degree longitude global grid (121x240).
90.0N - 90.0S, 0.0E - 358.5E.


Levels:

37 Pressure levels (mb): 1000 975 950 925 900 875 850 825 800 775 750 700 650 600 550 500 450 400 350 300 250 225 200 175 150 100 70 50 30 20 10 7 5 3 2 1


Data Format:

GRIB for 6-hourly
NetCDF for monthily

 

0001

Data variable and Path:

Download Path(0.75 degree):

Monthly

Pressure level(0.75): /archive/Reanalysis/ECMWF/ITM/0.75/mon/PRS
Surface(0.75): /archive/Reanalysis/ECMWF/ITM/0.75/mon/SFC

6hrs

Pressure level(0.75): /archive/Reanalysis/ECMWF/ITM/0.75/6hr/PRS
Surface(0.75): /archive/Reanalysis/ECMWF/ITM/0.75/6hr/SFC

Daily(0.75)

Pressure level(0.75): /archive/Reanalysis/ECMWF/ITM/0.75/day/PRS
Surface(0.75): /archive/Reanalysis/ECMWF/ITM/0.75/day/SFC

 

Variable(0.75 degree):

Monthly

Pressure Cloud Cover Cloud ice water content Cloud liquid water content Ozone mass mixing ratio Relative humidity
Divergence Vorticity (relative) Vertical velocity Specific humidity V velocity
U velocity Temperature Geopotential Potential vorticity  
Surface Vertical integral of divergence of ozone flux Vertical integral of divergence of total energy flux Vertical integral of divergence of geopotential flux Vertical integral of divergence of moisture flux Vertical integral of divergence of thermal energy flux
Vertical integral of divergence of kinetic energy flux Vertical integral of divergence of mass flux Vertical integral of northward ozone flux Vertical integral of eastward ozone flux Vertical integral of northward total energy flux
Vertical integral of eastward total energy flux Vertical integral of northward geopotential flux Vertical integral of eastward geopotential flux Vertical integral of northward water vapour flux Vertical integral of eastward water vapour flux
Vertical integral of northward heat flux Vertical integral of eastward heat flux Vertical integral of northward kinetic energy flux Vertical integral of eastward kinetic energy flux Vertical integral of northward mass flux
Vertical integral of eastward mass flux Vertical integral of energy conversion Vertical integral of total energy Vertical integral of moist static energy Vertical integral of dry static energy
Vertical integral of thermal energy Vertical integral of kinetic energy Vertical integral of total column ozone Vertical integral of total column frozen cloud water Vertical integral of total column liquid cloud water
Vertical integral of total column water vapour Vertical integral of temperature Vertical integral of mass of atmosphere Forecast logarithm of surface roughness for heat Forecast surface roughness
Forecast albedo Temperature of snow layer Soil temperature level 4 Skin temperature Logarithm of surface roughness length for heat
Instantaneous moisture flux Instantaneous surface heat flux Instantaneous Y surface stress Instantaneous X surface stress 10 metre wind speed
Total column ozone Skin reservoir content High cloud cover Medium cloud cover Low cloud cover
Soil temperature level 3 Albedo Surface roughness Soil temperature level 2 2 metre dewpoint temperature
2 metre temperature 10 metre V wind component 10 metre U wind component Total cloud cover Boundary layer height
Mean sea level pressure Charnock Snow depth Soil temperature level 1 Total column water vapour
Total column water Surface pressure Total column ice water Total column liquid water Convective available potential energy
Volumetric soil water layer 4 Volumetric soil water layer 3 Volumetric soil water layer 2 Volumetric soil water layer 1 Ice surface temperature layer 4
Ice surface temperature layer 3 Ice surface temperature layer 2 Ice surface temperature layer 1 Sea surface temperature Snow density
Sea-ice cover        

6hrs

Pressure Cloud Cover Cloud liquid water content Ozone mass mixing ratio Relative humidity Divergence
Vorticity (relative) Vertical velocity Specific humidity V velocity U velocity
Temperature Geopotential Potential vorticity    
Surface 10 metre V wind component 10 metre U wind component 2 metre dewpoint temperature 2 metre temperature Albedo
Snow albedo Charnock Sea-ice cover High cloud cover Ice temperature layer 1
Ice temperature layer 2 Ice temperature layer 3 Ice temperature layer 4 Low cloud cover Logarithm of surface roughness length for heat
Medium cloud cover Mean sea level pressure Mean wave direction Mean wave period Snow density
Snow depth Skin temperature Surface pressure Surface roughness Skin reservoir content
Sea surface temperature Soil temperature level 1 Soil temperature level 2 Soil temperature level 3 Significant wave height
Soil wetness level 4 Volumetric soil water layer 1 Volumetric soil water layer 2 Volumetric soil water layer 3 Volumetric soil water layer 4
Total cloud cover Total column ozone Total column water Total column water vapour Temperature of snow layer
Convective precipitation Evaporation East-West surface stress Large-scale precipitation North-South surface stress
Surface latent heat flux Surface sensible heat flux Surface net solar radiation Surface net solar radiation, clear sky Surface solar radiation downwards
Surface net thermal radiation Total precipitation      

 

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