GCOM-C/SGLI L2 Vegetation Indices

  • DOI: 10.57746/EO.01gs73b3y17efdvmj1ajftbfr2
  • Last Updated: 2023-02-14
Data Progress: In Work
G-Portal

Product Summary

GCOM-C/SGLI L2 Vegetation Indices dataset is obtained from the SGLI sensor onboard GCOM-C produced by the Japan Aerospace Exploration Agency (JAXA). The product is the vegetation indices and shadow index.
GCOM-C is sun-synchronous sub-recurrent orbit satellite launched on December 23, 2017 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. Level 2 products are defined to be granule scene and global (tile) data of physical quantity derived from Level-1B or Level-2 products and ancillary data such as meteorological data and various additional data related to the physical quantity.
This dataset includes Enhanced Vegetation Index (EVI), Normalized Defferemce Difference Vegetation Index (NDVI), Shadow Index (SDI), and quality flag (QA_flag).
NDVI is a simple normalized index that can be used to indicate the activity of vegetation making use of the reflectance at red and near-infrared wavelengths where the reflectance of vegetation exhibits a steep increase like a step function. The physical quantity is dimensionless.
EVI is an improved version of vegetation indices designed to enhance the vegetation signal in high density vegetation area. The physical quantity is dimensionless.
SDI is the fraction of shadow generated by conformation of vegetation (shadow area proportion within a pixel) and is estimated from SW03 surface reflectance. SDI reflects the canopy shape and density. The physical quantity is dimensionless. The QA_flag shows flag of quality and observation condition.
The provided format is HDF5. The Spatial resolution is 250 m. The projection method is EQA. The data projection type is "Tile". The current version of the product is Version 3. The Version 2 is also available.

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

250 m

Location

  • GEOGRAPHIC REGION > GLOBAL LAND
Dataset Short Name
GCOM-C_SGLI_L2_VGI
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
L2
Version Description

Version 1, 2018-11-01, Notavailable
Version 2, 2020-06-29, Available
Version 3, 2021-11-29, Available

File Format
HDF5
Dataset Type
None / None
Resolution
Spatial Resolution
250 m
Temporal Resolution
None
Dataset Progress
In Work
Projection
EQA
Collection Data Type
SCIENCE_QUALITY
Get Data
https://gportal.jaxa.jp/gpr/?lang=en
Dataset Title
GCOM-C/SGLI L2 Vegetation Indices
Distribution Format
HDF5
Fees
Free
Sample
Citation
Japan Aerospace Exploration Agency. 2018. GCOM-C/SGLI L2 Vegetation Indices. https://doi.org/10.57746/EO.01gs73b3y17efdvmj1ajftbfr2
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
  • Biota
  • Imagery/Base Maps/Earth Cover
  • Environment
  • Climatology/Meteorology/Atmosphere
Science Keywords
  • EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION INDEX > NORMALIZED DIFFERENCE VEGETATION INDEX(NDVI)
  • EARTH SCIENCE > BIOSPHERE > VEGETATION > VEGETATION INDEX
  • EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > LAND USE/LAND COVER CLASSIFICATION > VEGETATION INDEX > VEGETATION INDEX
  • EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > LAND USE/LAND COVER CLASSIFICATION > VEGETATION INDEX > NORMALIZED DIFFERENCE VEGETATION INDEX(NDVI)
Location Keywords
  • GEOGRAPHIC REGION > GLOBAL LAND

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.