GOSAT-GW/AMSR3 L3 Sea Surface Temperature (1-Month,12.5km,EG)

  • DOI: 10.57746/EO.01hn9be5a39xdxcgjtzbb6wk2k
  • Last Updated: 2026-06-30
Data Progress: In Work
G-Portal

Product Summary

GOSAT-GW/AMSR3 L3 Sea Surface Temperature (EG, 12.5 km, 1-Month) dataset is obtained from the AMSR3 sensor onboard GOSAT-GW and produced by the Japan Aerospace Exploration Agency (JAXA).
GOSAT-GW was launched by the H-IIA Launch Vehicle No. 50 (H-IIA 50) at 01:33 a.m. on Jun 29th, 2025 (Japan Standard Time, JST). GOSAT-GW equipped with AMSR3 takes measurements at multiple microwave frequencies and multiple polarizations of weak electromagnetic waves in the microwave band radiated from the Earth’s surface and the atmosphere. AMSR3 has swath of 1535 km and 11 microwave bands. The observation data will enable the creation of long-term trustworthy data sets of global physical amount.
Level 3 products are gridded data. They store the brightness tempreture or physical parameters data converted using grid processing and temporally statical processing.
This product includes monthly mean Sea Surface Temperature (SST). SST product represents temperature of water at ocean surface. Its horizontal resolution is about 20-30 km and coarser than that of optical instruments. Microwave radiometer, however, can observe ocean surface through clouds, and monitor continuous change of sea surface temperature over the ocean where few clear region can be found in specific areas or seasons.
The provided format is NetCDF4. The current version of the product is Version 01A. The physical quantity unit is [degree_Celsius]. The generation unit is global. The sampling resolution is 12.5 km. The projection method is EG.

Platform
GOSAT-GW
Sensor
AMSR3

Coverage

Temporal Coverage

2025-08-11 to Present

Spatial Coverage

Bounding Rectangle

Resolution

12.5 km

Location

  • GEOGRAPHIC REGION > GLOBAL OCEAN
Dataset Short Name
GOSAT-GW_AMSR3_L3_SST_1Month_12.5km_EG
Platform / Sensor
GOSAT-GW / AMSR3
Coverage
Spatial Coverage
Bounding Rectangle
Temporal Coverage
2025-08-11 to Present
Product Level ID
L3
Version Description

Version 01A, 2026-06-30, Available

File Format
NetCDF4
Dataset Type
Monthly / Global
Resolution
Spatial Resolution
12.5 km
Temporal Resolution
Monthly
Dataset Progress
In Work
Projection
EG
Collection Data Type
SCIENCE_QUALITY
Get Data
https://gportal.jaxa.jp/gpr/?lang=en
Dataset Title
GOSAT-GW/AMSR3 L3 Sea Surface Temperature (1-Month,12.5km,EG)
Distribution Format
NetCDF4
Fees
Free
Citation
Japan Aerospace Exploration Agency. 2025. GOSAT-GW/AMSR3 L3 Sea Surface Temperature (1-Month,12.5km,EG). https://doi.org/10.57746/EO.01hn9be5a39xdxcgjtzbb6wk2k
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G-Portal Terms of service
https://gportal.jaxa.jp/gpr/index/eula?lang=en
ISO Topic Categories
  • OCEANS
Science Keywords
  • EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
Location Keywords
  • GEOGRAPHIC REGION > GLOBAL OCEAN
ECV and other Keywords
  • OCEANS
  • OCEAN TEMPERATURE
  • SEA SURFACE TEMPERATURE

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.

Date Description of Change
2026-06-30 Published and assigned a DOI.