Today's Earth - Global (3-Hourly, 0.5deg)

  • DOI: 10.57746/EO.01jjqszecv9c8pg9mm2p6xvgwc
  • Last Updated: 2025-01-31
Data Progress: Complete

Product Summary

Today's Earth (TE) is JAXA's terrestrial hydrological simulation system developed in collaboration with University of Tokyo. The system derives land surface states/fluxes and river conditions from numerical simulation based on satellite observation and atmospheric reanalysis and/or forecast. The system consists of the land surface model MATSIRO (Minimal Advanced Treatments of Surface Interaction and Runoff, Takata et al., 2003) and river routing model CaMa-Flood (Catchment-based Macro-scale Floodplain, Yamazaki et al., 2011).
Today's Earth - Global (TE-Global) is a deterministic simulation product with three different versions for global coverage. JRA-55 ver. is a product that utilizes the Japan Meteorological Agency (JMA) JRA-55– the Japanese 55-year Reanalysis dataset as input for the TE-Global simulation. Among the JRA-55 variables, the version that uses GSMaP (Global Satellite Mapping of Precipitation) for rainfall is called the GSMaP ver. Similarly, the version that uses MODIS (Terra/Aqua MODIS Global Solar Radiation Product) for downward shortwave radiation is called the MODIS ver. For the validation result of the product, please refer to Ma et al., 2024.
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Version, Release date (Temporal coverage)
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JRA-55 ver., 2018-03-31 (1958 ~ 2023)
GSMaP ver., 2018-03-31 (2001 ~ 2023)
MODIR ver., 2018-03-31 (2003 ~ 2023)
(Publication period: For the last 13 months)

Platform
Model
Sensor
N/A

Coverage

Temporal Coverage

1958-01-01 to 2024-01-31
(Publication period: For the last 13 months)

Spatial Coverage

Bounding Rectangle
(90.0°, -180.0°, -90.0°, 180.0°)

Resolution

0.5 degree

Location

  • GEOGRAPHIC REGION > GLOBAL LAND
Dataset Short Name
Todays_Earth_Global_3hourly_0.5deg
Platform / Sensor
Model / N/A
Coverage
Spatial Coverage
Bounding Rectangle
(90.0°, -180.0°, -90.0°, 180.0°)
Temporal Coverage
1958-01-01 to 2024-01-31
(Publication period: For the last 13 months)
Product Level ID
L4
Version Description

JRA-55 ver., 2018-03-31, Available
GSMaP ver., 2018-03-31, Available
MODIR ver., 2018-03-31, Available

File Format
NetCDF
Dataset Type
3-hourly / Global
Resolution
Spatial Resolution
0.5 degree
Temporal Resolution
3-hourly
Dataset Progress
Complete
Projection
EQR
Collection Data Type
SCIENCE_QUALITY
Get Data
https://www.eorc.jaxa.jp/water/documents.html
Dataset Title
Today's Earth - Global (3-Hourly, 0.5deg)
Distribution Format
NetCDF
Fees
Free
Citation
Japan Aerospace Exploration Agency. 2018. Today's Earth - Global (3-Hourly, 0.5deg). https://doi.org/10.57746/EO.01jjqszecv9c8pg9mm2p6xvgwc
Access Constraints

No constraints but users need to be registered via following registration form to download files. https://www.eorc.jaxa.jp/water/term.html

Use Constraints

The user should comply with the following terms when using the images and data (https://earth.jaxa.jp/en/data/policy/). Users should specify the following sentence when they publish a thesis, a report, and so on by using the dataset. "Today's Earth product that was used in this paper was supplied by Japan Aerospace Exploration Agency and Institute of Industrial Science, The University of Tokyo."

Today's Earth Terms of service
https://www.eorc.jaxa.jp/water/term.html
ISO Topic Categories
  • Climatology/Meteorology/Atmosphere
  • Inland Waters
Science Keywords
  • EARTH SCIENCE > LAND SURFACE > SURFACE RADIATIVE PROPERTIES
  • EARTH SCIENCE > LAND SURFACE > FROZEN GROUND
  • EARTH SCIENCE > LAND SURFACE > SURFACE THERMAL PROPERTIES
  • EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SNOW/ICE
  • EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER
  • EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GROUND WATER
Location Keywords
  • GEOGRAPHIC REGION > GLOBAL LAND
ECV and other Keywords
  • Soil moisture
  • Snow water equivalent
  • Evapotranspiration
  • Runoff
  • River discharge
  • River water depth
  • Flooded fraction

ISO Topic Categories is the keywords in the ISO 19115 - Geographic Information Metadata.

Science Keywords hosts Global Change Master Directory (GCMD) Keywords which are a hierarchical set of controlled Earth Science vocabularies that help ensure Earth science data, services, and variables are described in a consistent and comprehensive manner and allow for the precise searching of metadata and subsequent retrieval of data, services, and variables.

ECV Keywords hosts a physical, chemical or biological variable or a group of linked variables that critically contributes to the characterization of Earth's climate.