GCOM-C/SGLI L1B Shortwave Infrared Thermal Infrared (1km)
- DOI: 10.57746/EO.01gs73b33g1d40ereym5pr61nz
- Last Updated: 2023-02-14
Product Summary
GCOM-C/SGLI L1A Shortwave Infrared Thermal Infrared (1km) dataset is obtained from the SGLI sensor onboard GCOM-C and produced by the Japan Aerospace Exploration Agency (JAXA). GCOM-C is Sun-synchronous sub-recurrent Orbit satellite launched on December 23, 2017, which mounts SGLI and conducts long-term global observations of geophysical variables related to the global climate system across 28 items including aerosol and vegetation over 4 areas of atmosphere, land, ocean, and cryosphere. The data will be used to contribute to higher accuracy of global warming prediction. The SGLI has swath of 1150 km in the visible band and 1400 km in the infrared band.
GCOM-C/SGLI Level 1B products are using the data contained in Level 1A products as inputs, and the following processes are applied on the input data, calculation of spectral radiance, re-sampling of geometric correction, data and observation data to L1B, Reference Coordinate System, calculation of land/water flag, creation of quality information.
This product is top of atmosphere radiance SI (Scaled Integer) data, using the Level 1A product as input. The provided format is HDF5. The spatial resolution is 1 km. 250 m is also available. Radiometric correction is stored. The geometries are projected to L1B reference coordinates commonly for VNR-NP and IRS, and the ground observation position in each band are same. Therefore, as geometric information, latitude, longitude, solar azimuth angle and solar zenith angle of 10 pixels interval are stored commonly for band. On the other hand, since the precise satellite position in observed pixels is varied depending on band, the satellite azimuth angle and the satellite zenith angle are stored by 10 pixels interval for each band. The stored geometric information is the center position of the pixel.
In addition, The current version of the product is Version 2. QA flag corresponding to the observation image is appended to Level 1B product.
- Platform
- GCOM-C
- Sensor
- SGLI
Coverage
Temporal Coverage
2018-01-01 to Present
Spatial Coverage
Bounding Rectangle
(90.0°,
-180.0°,
-90.0°,
180.0°)
Resolution
1 km
Location
- GEOGRAPHIC REGION > GLOBAL
- Dataset Short Name
- GCOM-C_SGLI_L1B_SWI_and_TIR_1km
- Platform / Sensor
- GCOM-C / SGLI
- Coverage
-
- Spatial Coverage
-
Bounding Rectangle
(90.0°, -180.0°, -90.0°, 180.0°) - Temporal Coverage
- 2018-01-01 to Present
- Product Level ID
- L1B
- Version Description
Version 1, 2018-12-06, Notavailable
Version 2, 2021-11-29, Available- File Format
- HDF5
- Dataset Type
- None / None
- Resolution
-
- Spatial Resolution
- 1 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-C/SGLI L1B Shortwave Infrared Thermal Infrared (1km)
- Distribution Format
- HDF5
- Fees
- Free
- Citation
- Japan Aerospace Exploration Agency. 2018. GCOM-C/SGLI L1B Shortwave Infrared Thermal Infrared (1km). https://doi.org/10.57746/EO.01gs73b33g1d40ereym5pr61nz
- 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
-
- Geoscientific Information
- Imagery/Base Maps/Earth Cover
- Science Keywords
-
- EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > INFRARED RADIANCE
- EARTH SCIENCE > SPECTRAL/ENGINEERING > INFRARED WAVELENGTHS > THERMAL INFRARED
- Location Keywords
-
- GEOGRAPHIC REGION > GLOBAL
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.