DATA ACCESS

Product Documentation and Data Access

Simulation results of Today’s Earth (TE) are available in netCDF format via the FTP server. Users are required to read the terms of use carefully and complete the registration through the link below before accessing the data.
Some products and variables are also available through the JAXA Earth API.
Important: As of July 2026, data from the latest version of TE-Global have not yet been released.

User Registration

The product description document provides basic information on Today’s Earth (TE), including product specifications, performance, and limitations. Users are encouraged to read this document and understand the characteristics and limitations of the TE products before using the data.

Product Description Document
(Last updated: 2024/07/02)

Versions of Today’s Earth

Today’s Earth (TE) provides several simulation products with different forcing datasets, domains, spatial resolutions, and publication periods. Major variables from the latest version of each product can be viewed on the monitoring pages accessible from the top page. For detailed product specifications, please refer to the product description document or DOI links listed below.

Note: Products with “No longer updated” in the update frequency column are no longer updated, but archived data remain available through the FTP server.


Product overview

Product Main use Version Atmospheric forcing Period Spatial resolution Update frequency Forecast range
TE-Global Historical analysis, real-time monitoring, and forecasting of land surface and river conditions. v1.0 JRA-55 (Baseline) 1958–2023 Land: 0.5°
River: 0.25° 		No longer updated -
Precipitation: GSMaP
Other: JRA-55 		2001–2023
Shortwave radiation: MODIS
Other: JRA-55 		2003–2023
v2.0 Precipitation: GSMaP
Other: GSM-GPV 		To be announced 0.1° Every 6 hours About 5-day forecast*
TE-Global NEXRA Ensemble-based analysis of global land surface and river conditions. v1.0 NEXRA
NICAM-LETKF JAXA Research Analysis 		2019–2024 Land: 0.5°
River: 0.25° 		No longer updated -
TE-Japan High-resolution real-time monitoring of land surface and river conditions in Japan. v1.0 MSM-GPV (Baseline) 2007–2022 1/60° No longer updated -
Shortwave radiation: Himawari
Other: MSM-GPV 		2015–2023
v1.1 Precipitation: Radar-AMeDAS + AI-corrected MSM-GPV
Other: original MSM-GPV 		2022–2024
v2.0 Precipitation: Radar-AMeDAS + AI-corrected MSM-GPV
Shortwave radiation: Himawari
Other: MSM-GPV 		2007–present Every 3 hours Real-time*

* Forecast information beyond the current time for the Japan domain is provided only to collaborative research partners in accordance with Japanese domestic law.


Product DOI Links

Please select the temporal resolution that matches your purpose. The DOI pages provide detailed product information and should be used for citation.

Product Version Temporal resolution Publication period DOI
TE-Global v1.0 3-hourly Last 13 months 10.57746/EO.01jjqszecv9c8pg9mm2p6xvgwc
Daily Last 10 years 10.57746/EO.01jjqt1g3p99g8esban1d1qhkc
Monthly All available period 10.57746/EO.01jjqt22dhtm2j7jvyc60q876w
v2.0 6-hourly / Daily / Monthly To be announced To be announced
TE-Global NEXRA v1.0 3-hourly Last 13 months 10.57746/EO.01jjqt2penbgxmzt1f8mk05djc
Daily Last 10 years 10.57746/EO.01jjqt3bxwymkqbrm0c0z39dsh
Monthly All available period 10.57746/EO.01jjqt3z20adx7nqe27njjkbdt
TE-Japan v1.0 / v1.1 / v2.0 Hourly Last 13 months 10.57746/EO.01jjxhp7g6kxvc26rr0ydes47b
Daily Last 10 years 10.57746/EO.01jjqt4g2azadh7ycmjkrw2kas
Monthly All available period 10.57746/EO.01jjxhpk15x676z3k3anz4s5t9

Variable List

Model/CategoryVariable nameItem nameUnit
(netCDF)		Web monitor
ForcingrainfallGPRCTkg/m2/s
snowfallGSNWLkg/m2/s-
eastward wind*8GDUm/s-
northward wind*8GDVm/s-
surface air temperatureGDTK
specific humidityGDQkg/kg-
surface shortwave radiation (downward)SSRDW/m2-
surface longwave radiation (downward)SLRDW/m2-
surface air pressure*8GDPShPa-
MATSIROWater balance (State)soil moisture (at each level) [Z1-Z6]*1GLWm/m
[Z1]
soil moisture (total volume)GLWtotkg/m2-
canopy waterGLWCm-
snow amountGLSNWkg/m2
Water balance (Flux)snow meltSNMLTkg/m2/s-
snow freezeSNFRZkg/m2/s-
snow sublimationSNSUBkg/m2/s-
ice meltICEMLTkg/m2/s-
ice sublimationICESUBkg/m2/s-
snow & ice sublimationSSUBkg/m2/s-
transpirationETFLXkg/m2/s-
canopy evaporationEIFLXkg/m2/s-
canopy sublimationEISUBkg/m2/s-
soil evaporationEBFLXkg/m2/s-
soil sublimationEBSUBkg/m2/s-
total runoff (total) [W1-W2]*2RUNOFFkg/m2/s-
base runoffRUNOFFBkg/m2/s-
surface runoffSRUNOFkg/m2/s-
runoff (lake & land) [W1-W2]*2RUNOFFAkg/m2/s-
Heat balance (State)soil temperature [Z1-Z6]*1GLGK-
snow temperature [L1-L3]*3GLTSNK-
land skin temperature [C1-C2]*4GLTSK-
canopy temperature [C1-C2]*4GLTCK-
Heat balance (Flux)soil heat fluxGFLUXSW/m2-
snow surface heat fluxSNFLXSW/m2-
ground heat flux in totalGFLXTLW/m2-
surface shortwave radiation (upward)SSRUW/m2-
surface longwave radiation (upward)SLRUW/m2-
sensible heat fluxSENSW/m2-
latent heat fluxLTNTW/m2-
latent heat flux (evaporation)EVAPW/m2
Otherssnow covered fractionSNRAT--
albedoALB--
snow albedo [A1-A3]*5GLASN--
soil potential [Z1-Z6]*1GPSIPa-
dust density in snow [L1-L3]*3CDSTMppmw-
water flux atmosphere to landWA2Lm/s-
water flux land to riverWL2Rm/s-
soil ice (at each level) [Z1-Z6]*1GLFRSm/m-
soil ice (total volume)GLFRStotkg/m2-
land waterWLNDm-
inland water sinkbudgetBUDINDkg/m2/s-
distributed water sinkbudgetRBUDINDkg/m2/s-
ground water inputWINPTkg/m2/s-
lake shSHLKcm-
lake surface temperatureTSIL°C-
CaMa-Floodriver dischargeRIVOUTm3/s-
river water storageRIVSTOm3-
river water depthRIVDPHm-
river flow velocityRIVVELm/s-
floodplain flow (discharge)FLDOUTm3/s-
floodplain water storageFLDSTOm3-
floodplain water depthFLDDPHm
downscaled floodplain water depth*7FLDDPHm
flood areaFLDAREm2-
flood fraction*9FLDFRC--
downscaled flood fraction*7*9FLDFRC-
water surface elevationSFCELVm-
total discharge (RIVOUT + FLDOUT)*8OUTFLWm3/s
total storage (RIVSTO + FLDSTO)*8STORGEm3-
Statisticsreturn period of rainfall*7RPGPRCTyear
return period of river water depth*7RPRIVDPHyear
downscaled return period of river water depth*7RPRIVDPHyear
return period of total discharge
(RIVOUT + FLDOUT)*7		RPOUTFLWyear
downscaled return period of total discharge*7RPRIVDPHyear
  1. *1: Z1-Z6 represents the soil layers, the depth (m) of which is Z1: 0 - 0.05, Z2: 0.05 - 0.25, Z3: 0.25 - 1, Z4: 1 - 2, Z5: 2 - 4, and Z6: 4 - 14.
  2. *2: W1 and W2 represent the values regarding water and ice, respectively.
  3. *3: L1-L3 represents the snow layers. The number of the effective layers and their depth are variable. See Takata et al. (2003) for more details.
  4. *4: C1 and C2 represent the outputs for snow-free canopy and snow-covered canopy, respectively.
  5. *5: A1, A2 and A3 represent the snow albedo of visible, near-infrared and infrared area, respectively.
  6. *6: River width is displayed with enhancement depending on its catchment size.
  7. *7: Only provided in TE-Japan.
    • Downscaled product: downscaled from 1/60 deg. to 1/240 deg. along with the unit catchment defined in the CaMa-Flood model.
    • Return period calculated from the statistical distribution of TE-Japan's simulation results for the period 2007-2020.
  8. *8: Only provided in TE-Global. Regarding wind speed, TE-Japan provides the absolute value of the synthesized wind speed for both eastward and northward directions as GDU.
  9. *9: TE-Japan updated to FLDFRC with permanent water removed from 2020/09/02, TE-Global updated to FLDFRC with permanent water removed from 2022/01/01.

Note:

  • TE-Global tends to have underestimation bias for its base runoff. Users are advised to check whether quality is sufficient for their applications when these data are used.
  • Currently we have an error in unit description for GLW and GLWC netCDF header and figure information. Please refer to the table above for correct information.
  • Eastward wind (GDU) and northward wind (GDV) are available only at TE-Global, while TE-Japan provides the absolute value of the composite wind speed.