GCOM-W/AMSR2 L2 Cloud Liquid Water
- DOI: 10.57746/EO.01gs73b0kr8nb6kexy9100bbmg
- Last Updated: 2024-03-21
Product Summary
GCOM-W/AMSR2 Cloud Liquid Water dataset is obtained from the AMSR2 sensor onboard GCOM-W and produced by the Japan Aerospace Exploration Agency (JAXA).
GCOM-W was launched by the H-IIA Launch Vehicle No. 21 (H-IIA F21) at 1:39 a.m. on May 18th, 2012 (Japan Standard Time, JST) and inserted into a planned position on the "A-Train" orbit. GCOM-W equipped with AMSR2 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. AMSR2 has swath of 1450 km and 7 microwave bands. The observation data will enable the creation of long-term trustworthy data sets of global physical amount.
Level 2 products calculates various geophysical parameters related to water using the Level 1B or 1R products as inputs.
This dataset includes Cloud liquid water (CLW), amount of vertically accumulated cloud droplet in the atmosphere, defined as amount of water per unit area. Coverage of the product is over the ocean only and Vertically integrated (columnar) cloud liquid water. Sea ice and precipitating areas are expected. The physical quantity unit is [kg/m2]. Cloud liquid water is one of essential hydrological parameters describing state of the atmosphere along with precipitation and total precipitable water. The Pixel_Data_Quality is quality flag stored for each observation point.
The provided format is HDF5. The Sampling resolution is 15 km. The current version of the product is Version 2. The Version 1 is also available. The generation unit is scene (defined as a half orbit).
- Platform
- GCOM-W
- Sensor
- AMSR2
Coverage
Temporal Coverage
2012-07-02 to Present
Spatial Coverage
Bounding Rectangle
(90.0°,
-180.0°,
-90.0°,
180.0°)
Resolution
15 km
Location
- GEOGRAPHIC REGION > GLOBAL OCEAN
- Dataset Short Name
- GCOM-W_AMSR2_L2_CLW
- Platform / Sensor
- GCOM-W / AMSR2
- Coverage
-
- Spatial Coverage
-
Bounding Rectangle
(90.0°, -180.0°, -90.0°, 180.0°) - Temporal Coverage
- 2012-07-02 to Present
- Product Level ID
- L2
- Version Description
Version 1, 2013-05-17, Available
Version 2, 2015-04-03, Available- File Format
- HDF5
- Dataset Type
- None / Scene
- Resolution
-
- Spatial Resolution
- 15 km
- Temporal Resolution
- None
- Dataset Progress
- In Work
- Projection
- None
- Collection Data Type
- SCIENCE_QUALITY
- Get Data
- https://gportal.jaxa.jp/gpr/?lang=en
- Dataset Title
- GCOM-W/AMSR2 L2 Cloud Liquid Water
- Distribution Format
- HDF5
- Fees
- Free
- Sample
- Citation
- Japan Aerospace Exploration Agency. 2012. GCOM-W/AMSR2 L2 Cloud Liquid Water. https://doi.org/10.57746/EO.01gs73b0kr8nb6kexy9100bbmg
- Access Constraints
No constraints but users need to be registered with the G-portal User Registration system to download files.
- Use Constraints
The user is entitled to use G-Portal data free of charge without any restrictions (including commercial use) except for the condition about acknowledgement of data credit as stipulated in G-portal terms of use 7.(2).Click here for detailed G-Portal data usage constrains.
- G-Portal Terms of service
- https://gportal.jaxa.jp/gpr/index/eula?lang=en
- ISO Topic Categories
-
- CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
- Science Keywords
-
- EARTH SCIENCE > ATMOSPHERE > CLOUDS > CLOUD MICROPHYSICS > CLOUD LIQUID WATER/ICE
- Location Keywords
-
- GEOGRAPHIC REGION > GLOBAL OCEAN
- ECV and other Keywords
-
- Cloud Liquid Water
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.