資料庫

Brief Description:

 JMA has carried out the second reanalysis project named the Japanese 55-year Reanalysis (JRA-55) using a more sophisticated NWP system, which is based on the operational system as of December 2009, and newly prepared past observations. The analysis period is extended to 55 years starting from 1958, when the regular radiosonde observations became operational on the global basis. Many of deficiencies in JRA-25 have been diminished or reduced in JRA-55 because many improvements achieved after JRA-25 have been introduced. JRA-55 provides a consistent climate dataset over the last half century.

 

Temporal Coverage:

  • 3-hourly average values for 1958/01/01 to 2016/07/31 (only forecast data)
  • 6 hourly average values for 1958/01/01 to 2016/07/31.
  • monthly average values for 1958/01 to 2016/07.

Spatial Coverage:

  • 1.25 degree latitude x 1.25 degree longitude global grid (288x145).
    [-90S - 90N, 0 - 360.0E]
  • T319 quasi-regular Gaussian latitude/longitude grid. (640x320)
    [-89.57S -89.57N, 0 - 360.0E]

Levels:

  • Pressure Level File – 37 pressure levels (hPa) : 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, 125, 100, 70, 50, 30, 20, 10, 7, 5, 3, 2, 1
  • Isentropic Level File – 21 Isentropic levels (K) : 270, 280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 425, 475, 550, 650, 750, 850
    Model Level File – 60 hybrid levels

Data Format:

GRIB.

 

1

Users Handbook:

 

Users Handbook:

  • 6-hourly (1.25 degree)

    Total column analysis /archive/Reanalysis/JRA55/6hr/anl_column125
    Isentropic analysis /archive/Reanalysis/JRA55/6hr/anl_isentrop125
    Land surface analysis /archive/Reanalysis/JRA55/6hr/anl_land125
    Isobaric analysis /archive/Reanalysis/JRA55/6hr/anl_p125
    Surface analysis /archive/Reanalysis/JRA55/6hr/anl_surf125
    Total column forecast /archive/Reanalysis/JRA55/6hr/fcst_column125
    Land surface forecast /archive/Reanalysis/JRA55/6hr/fcst_land125

 

  • Monthly (1.25 degree)

    Total column analysis /archive/Reanalysis/JRA55/mon/anl_column125
    Isentropic analysis /archive/Reanalysis/JRA55/mon/anl_isentrop125
    Land surface analysis /archive/Reanalysis/JRA55/mon/anl_land125
    Isobaric analysis /archive/Reanalysis/JRA55/mon/anl_p125
    Surface analysis /archive/Reanalysis/JRA55/mon/anl_surf125
    Total column forecast /archive/Reanalysis/JRA55/mon/fcst_column125
    Land surface forecast /archive/Reanalysis/JRA55/mon/fcst_land125
    Isobaric forecast /archive/Reanalysis/JRA55/mon/fcst_p125
    2-D average diagnostic /archive/Reanalysis/JRA55/mon/fcst_phy2m125
    Isobaric average diagnostic /archive/Reanalysis/JRA55/mon/fcst_phy3m125
    Land surface average diagnostic /archive/Reanalysis/JRA55/mon/fcst_phyland125
    2-D instantaneous diagnostic /archive/Reanalysis/JRA55/mon/fcst_surf125
    Sea ice /archive/Reanalysis/JRA55/mon/ice125

 

  • Monthly (T319 quasi-regular Gaussian)

    Total column analysis /archive/Reanalysis/JRA55/mon/anl_column
    Isentropic analysis /archive/Reanalysis/JRA55/mon/anl_isentrop
    Land surface analysis /archive/Reanalysis/JRA55/mon/anl_land
    Model level analysis /archive/Reanalysis/JRA55/mon/anl_mdl
    Surface analysis /archive/Reanalysis/JRA55/mon/anl_surf
    Total column forecast /archive/Reanalysis/JRA55/mon/fcst_column
    Land surface forecast /archive/Reanalysis/JRA55/mon/fcst_land
    Model level forecast /archive/Reanalysis/JRA55/mon/fcst_mdl
    2-D average diagnostic /archive/Reanalysis/JRA55/mon/fcst_phy2m
    Isobaric average diagnostic /archive/Reanalysis/JRA55/mon/fcst_phy3m
    Land surface average diagnostic /archive/Reanalysis/JRA55/mon/fcst_phyland
    2-D instantaneous diagnostic /archive/Reanalysis/JRA55/mon/fcst_surf
    Sea ice /archive/Reanalysis/JRA55/mon/ice
    2-D extreme /archive/Reanalysis/JRA55/mon/minmax_surf

 

Variable:

6-hourly

Total column analysis

(anl_column125)

Precipitable water

Meridional water vapour flux

Zonal water vapour flux

Zonal thermal energy flux

Meridional thermal energy flux

Isentropic analysis

(anl_isentrop125)

Pressure

Potential vorticity

Geopotential height

u-component wind

v-component wind

Montgomery stream function

Vertical velocity

Specific humidity

Square of Brunt-Vaisala frequency

 

Land surface analysis

(anl_land125)

Water equivalent of accumulated snow depth

Canopy temperature

Ground temperature

Soil temperature

Soil wetness

Isobaric analysis

(anl_p125)

Geopotential height

Temperature

Dew-point depression (or deficit)

u-component of wind

v-component of wind

Stream function

Velocity potential

Vertical velocity

Relative vorticity

Relative divergence

Specific humidity

Relative humidity

     

Surface analysis

(anl_surf125)

Pressure

Pressure reduced to MSL

2m Temperature

Potential temperature

2m Dew-point depression (or deficit)

2m Specific humidity

2m Relative humidity

10m u-component of wind

10m v-component of wind

 

Total column forecast

(fcst_column125)

Total ozone

Precipitable water

Cloud ice

Meridional water vapour flux

Zonal water vapour flux

Zonal thermal energy flux

Meridional thermal energy flux

Cloud liquid water

   

Land surface forecast

(fcst_phyland125)

Water equivalent of accumulated snow depth

Snow depth

Canopy temperature

Ground temperature

Moisture storage on canopy

Moisture storage of ground/cover

Soil temperature

Soil wetness

Mass concentration of condensed water in soil

 

Monthly

(1.25degree)

Total column analysis

(anl_column125)

Precipitable water

Meridional water vapour flux

Zonal water vapour flux

Zonal thermal energy flux

Meridional thermal energy flux

Isentropic analysis

(anl_isentrop125)

Pressure

Potential vorticity

Geopotential height

u-component wind

v-component wind

Montgomery stream function

Vertical velocity

Specific humidity

Square of Brunt-Vaisala frequency

 

Land surface analysis

(anl_land125)

Water equivalent of accumulated snow depth

Canopy temperature

Ground temperature

Soil temperature

Soil wetness

Isobaric analysis

(anl_p125)

Geopotential height

Temperature

Dew-point depression (or deficit)

u-component of wind

v-component of wind

Stream function

Velocity potential

Vertical velocity

Relative vorticity

Relative divergence

Specific humidity

Relative humidity

     

Surface analysis

(anl_surf125)

Pressure

Pressure reduced to MSL

2m Temperature

Potential temperature

2m Dew-point depression (or deficit)

2m Specific humidity

2m Relative humidity

10m u-component of wind

10m v-component of wind

 

Total column forecast

(fcst_column125)

Total ozone

Precipitable water

Cloud ice

Meridional water vapour flux

Zonal water vapour flux

Zonal thermal energy flux

Meridional thermal energy flux

Cloud liquid water

   

Land surface forecast

(fcst_land125)

Water equivalent of accumulated snow depth

Snow depth

Canopy temperature

Ground temperature

Moisture storage on canopy

Moisture storage of ground/cover

Soil temperature

Soil wetness

Mass concentration of condensed water in soil

 

Isobaric forecast

(fcst_p125)

Cloud cover

Cloud water

Cloud liquid water

Cloud ice

Ozone mixing ratio

2-D average diagnostic

(fcst_phy2m125)

Pressure

Evaporation

Total precipitation

Large-scale precipitation

Convective precipitation

Snowfall rate water equivalent

Latent heat flux

Sensible heat flux

Momentum flux, u-component

Momentum flux, v-component

Zonal momentum flux by long gravity wave

Meridional momentum flux by long gravity wave

Merdional momentum flux by short gravity wave

Zonal momentum flux by short gravity wave

Clear sky upward solar radiation flux

Clear sky downward solar radiation flux

Clear sky downward long wave radiation flux

Downward solar radiation

Downward long wave radiation flux

Upward solar radiation flux

Upward long wave radiation flux

Clear sky upward solar radiation flux

Clear sky upward long wave radiation flux

Downward solar radiation flux

Upward solar radiation flux

Upward long wave radiation flux

       

Isobaric average diagnostic

(fcst_phy3m125)

Cloud word function

Adiabatic zonal acceleration

Adiabatic meridional acceleration

Gravity wave zonal acceleration

Gravity wave meridional acceleration

Adiabatic heating rate

Upward mass flux at cloud base

Upward mass flux

Adiabatic moistening rate

Convective zonal acceleration

Convective meridional acceleration

Large-scale condensation heating rate

Convective heating rate

Convective moistening rate

Vertical diffusion heating rate

Vertical diffusion zonal acceleration

Vertical diffusion meridional acceleration

Vertical diffusion moistening rate

Solar radiative heating rage

Longwave radiative heating rate

Large-scale moistening rate

       

Land surface average diagnostic

(fcst_phyland125)

Water run-off

(Ground surface)

Ground heat flux

Evapotranspiration

Interception loss

Water run-off

(The bottom of land surface model)

2-D instantaneous diagnostic

(fcst_surf125)

Pressure

Surface roughness

Brightness temperature

Total cloud cover

(90 – 1100 hPa)

High cloud cover

(90 – 500 hPa)

Medium cloud cover

(500 – 850 hPa)

Low cloud cover

(850 – 1100 hPa)

Pressure reduced to MSL

2m Temperature

2m Dew-point depression (or deficit)

2m Specific humidity

2m Relative humidity

10m u-component of wind

10m v-component of wind

 

Sea ice

(ice125)

Ice cover

(1=ice, 0=no ice)

       

Monthly

(T319)

Total column analysis

(anl_column)

Precipitable water

Meridional water vapour flux

Zonal water vapour flux

Zonal thermal energy flux

Meridional thermal energy flux

Isentropic analysis

(anl_isentrop)

Pressure

Potential vorticity

Geopotential height

u-component wind

 

Montgomery stream function

Vertical velocity

Specific humidity

Square of Brunt-Vaisala frequency

 

Land surface analysis

(anl_land)

Water equivalent of accumulated snow depth

Canopy temperature

Ground temperature

Soil temperature

Soil wetness

Model level analysis

(anl_mdl)

Geopotential height

Temperature

u-component of wind

v-component of wind

Vertical velocity

Specific humidity

       

Surface analysis

(anl_surf)

Pressure

2m Temperature

Potential temperature

2m Specific humidity

2m Relative humidity

10m u-component of wind

10m v-component of wind

     

Total column forecast

(fcst_column)

Total ozone

Precipitable water

Cloud ice

Meridional water vapour flux

Zonal water vapour flux

Zonal thermal energy flux

Meridional thermal energy flux

Cloud liquid water

   

Land surface forecast

(fcst_land)

Water equivalent of accumulated snow depth

Snow depth

Canopy temperature

Ground temperature

Moisture storage on canopy

Moisture storage of ground/cover

Soil temperature

Soil wetness

Mass concentration of condensed water in soil

 

Model level forecast

(fcst_mdl)

Geopotential height

Temperature

u-component of wind

v-component of wind

Vertical velocity

Specific humidity

Total cloud cover

Cloud water

Cloud liquid water

Cloud ice

Upward mass flux at cloud base

Ozone mixing ratio

     

2-D average diagnostic

(fcst_phy2m)

Pressure

Evaporation

Total precipitation

Large-scale precipitation

Convective precipitation

Snowfall rate water equivalent

Latent heat flux

Sensible heat flux

Momentum flux, u-component

Momentum flux, v-component

Zonal momentum flux by long gravity wave

Meridional momentum flux by long gravity wave

Meridional momentum flux by short gravity wave

Zonal momentum flux by short gravity wave

Clear sky upward solar radiation flux

Clear sky downward solar radiation flux

Clear sky downward long wave radiation flux

Frequency of deep convection

Frequency of shallow convection

Frequency of stratocumulus parameterisation

Downward solar radiation flux

Downward long wave radiation flux

Upward solar radiation flux

Upward long wave radiation flux

Clear sky upward solar radiation flux

Clear sky upward long wave radiation flux

Downward solar radiation flux

Upward solar radiation flux

Upward long wave radiation flux

 

Isobaric average diagnostic

(fcst_phy3m)

Cloud word function

Adiabatic zonal acceleration

Adiabatic meridional acceleration

Gravity wave zonal acceleration

Gravity wave meridional acceleration

Adiabatic heating rate

Upward mass flux at cloud base

Upward mass flux

Adiabatic moistening rate

Convective zonal acceleration

Convective meridional acceleration

Large-scale condensation heating rate

Convective heating rate

Convective moistening rate

Vertical diffusion heating rate

Vertical diffusion zonal acceleration

Vertical diffusion meridional acceleration

Vertical diffusion moistening rate

Solar radiative heating rage

Longwave radiative heating rate

Large-scale moistening rate

       

Land surface average diagnostic

(fcst_phyland)

Water run-off

(Ground surface)

Ground heat flux

Evapotranspiration

Interception loss

Water run-off

(The bottom of land surface model)

2-D instantaneous diagnostic

(fcst_surf)

Pressure

Surface roughness

Brightness temperature

Total cloud cover

(90 – 1100 hPa)

High cloud cover

(90 – 500 hPa)

Medium cloud cover

(500 – 850 hPa)

Low cloud cover

(850 – 1100 hPa)

Pressure reduced to MSL

2m Temperature

2m Specific humidity

2m Relative humidity

10m u-component of wind

10m v-component of wind

   

Sea ice

(ice)

Ice cover

(1=ice, 0=no ice)

       

2-D extreme

(minmax_surf)

2m Maximum temperature

2m Minimum temperature

10m Maximum wind speed

   
 

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