GOSAT-GW/AMSR3 L2 Sea Surface Wind
type: Dataset
description: GOSAT-GW/AMSR3 L2 Sea Surface Wind Speed 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 Earthâs 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 2 products store various geophysical parameters related to water using the Level 1 products as inputs.This product includes Sea Surface Wind Speed (SSW). SSW product represents wind speed above the ocean surface. Microwave radiometer can observe wind speed under the clouds, but it is difficult to estimate where there is rainfall and will be missing value. Wind speed around tropical cyclones, however, is important parameter in weather forecast, and we provide All-weather Sea Surface Wind Speed (ASW) product, which includes wind speed in rainy area over the ocean, as all-weather wind speed research product.The provided format is NetCDF4. The current version of the product is Version 01A. The physical quantity unit is [m/s]. The generation unit is scene (defined as a half orbit). The sampling resolution is 15 km.
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keyword: EARTH SCIENCE
access rights: No constraints but users need to be registered with [the G-Portal User Registration system](https://gportal.jaxa.jp/gpr/user/regist1?lang=en) to download files.
keyword: OCEANS
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language: EN
license: LicenseDocument
  label: The users are entitled to use, reprocess and redistribute G-Portal data including commercial use for free except for the condition about acknowledgement of data credit as stipulated in G-Portal terms of use 7.(2). Click [here](https://gportal.jaxa.jp/gpr/index/eula?lang=en) for detailed G-Portal data usage constrains.
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subject: climatologyMeteorologyAtmosphere
keyword: SURFACE WINDS
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  start date: 2025-08-11T00:00:00Z
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was generated by: Activity
  used: GOSAT-GW
  started at time: 2025-08-11T00:00:00Z
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  notation: https://doi.org/10.57746/EO.01hmt2s8z2pjv8qgd8h0t9tch1
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keyword: OCEAN WINDS
modified: 2025-08-11T00:00:00Z
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CatalogRecord
source: https://fedeo.ceos.org/collections/series/items/GOSAT-GW_AMSR3_L2_SSW
modified: 2026-06-30T00:00:00Z
conforms to: https://joinup.ec.europa.eu/release/geodcat-ap/20

https://fedeo.ceos.org/collections/series/items/GOSAT-GW_AMSR3_L2_SSW
type: CatalogRecord
conforms to: ISO19139-2

EARTH SCIENCE>OCEANS
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

EARTH SCIENCE>ATMOSPHERE>ATMOSPHERIC WINDS>SURFACE WINDS
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords

EARTH SCIENCE>OCEANS>OCEAN WINDS
type: Concept
in scheme: https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/sciencekeywords