GCOM-C/SGLI L3 Chlorophyll-a Concentration (V3)

  • This dataset provides the concentration of chlorophyll-a in the sea surface layer, which is a photosynthetic pigment found in phytoplankton.

  • The data is collected daily by the GCOM-C satellite as part of a long-term and continuous global observation mission.

  • The dataset is available from November 29, 2021, to October 14, 2025, with a latency of 3-4 days.

  • The dataset is free to use without restrictions, and proper credit should be given to the Japan Aerospace Exploration Agency (JAXA) when publishing results or value-added data products.

  • Earth Engine is a platform for analyzing and visualizing this dataset, available for free for research, education, and nonprofit use.
JAXA/GCOM-C/L3/OCEAN/CHLA/V3
Dataset Availability
2021-11-29T00:00:00Z–2025-10-25T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("JAXA/GCOM-C/L3/OCEAN/CHLA/V3")
Cadence
1 Day
Tags
chla chlorophyll-a g-portal gcom gcom-c jaxa ocean ocean-color oceans

Description

This product is the concentration of the photosynthetic pigment (chlorophyll-a) in phytoplankton in the sea surface layer.

This is an ongoing dataset with a latency of 3-4 days.

GCOM-C conducts long-term and continuous global observation and data collection to elucidate the mechanism behind fluctuations in radiation budget and carbon cycle needed to make accurate projections regarding future temperature rise. At the same time, cooperating with research institutions having a climate numerical model, it contributes to reduction of errors in temperature rise prediction derived from the climate numerical model and improvement of accuracy of prediction of various environmental changes. SGLI mounted on GCOM-C is the succession sensor of the Global Imager (GLI) mounted on ADEOS-II (MIDORI II) and is the Imaging Radiometer which measures the radiation from near-ultraviolet to thermal infrared region (380 nm-12 um) in 19 channels. Global observation of once for approximately every two days is possible at mid-latitude near Japan by observation width at ground greater than 1,000 km. In addition, SGLI realizes high resolution than the similar global sensor and has a polarized observation function and a multi-angle observation function.

Bands

Pixel Size
4638.3 meters

Bands

Name Units Min Max Pixel Size Description
CHLA_AVE mg/m^3 0* 4000* meters

Concentration of the green pigment (chlorophyll-a) in phytoplankton in sea surface layer.
CHLA_QA_flag meters

CHLA QA
* estimated min or max value

Image Properties

Image Properties

Name Type Description
ALGORITHM_VERSION STRING

Algorithm version
GRID_INTERVAL STRING

Spatial resolution
GRID_INTERVAL_UNIT STRING

Unit of GRID_INTERVAL
IMAGE_END_TIME STRING

Image acquisition end time
IMAGE_START_TIME STRING

Image acquisition start time
PROCESSING_RESULT STRING

Good, Fair, Poor, NG
PROCESSING_UT STRING

Processing time
PRODUCT_FILENAME STRING

Source filename
PRODUCT_VERSION STRING

Product version
SATELLITE_DIRECTION STRING

Satellite orbit direction

  • A: Nighttime data
  • D: Daytime data
CHLA_AVE_OFFSET STRING

Offset
CHLA_AVE_SLOPE STRING

Slope

Terms of Use

Terms of Use

This dataset is free to use without any restrictions (including commercial use). Anyone wishing to publish analyzed results or value added data products should properly credit the original G-Portal data, e.g., "PR data by Japan Aerospace Exploration Agency". For value added data products, please indicate the credit of the original G-Portal data, e.g., "Original data for this value added data product was provided by Japan Aerospace Exploration Agency."

See G-Portal's terms of service (Article 7) for additional information.

Citations

Citations:

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('JAXA/GCOM-C/L3/OCEAN/CHLA/V3')
                .filterDate('2021-12-01', '2022-01-01')
                // filter to daytime data only
                .filter(ee.Filter.eq('SATELLITE_DIRECTION', 'D'));

// Multiply with slope coefficient
var image = dataset.mean().multiply(0.0016).log10();

var vis = {
  bands: ['CHLA_AVE'],
  min: -2,
  max: 2,
  palette: [
    '3500a8','0800ba','003fd6',
    '00aca9','77f800','ff8800',
    'b30000','920000','880000'
  ]
};

Map.addLayer(image, vis, 'Chlorophyll-a concentration');

Map.setCenter(128.45, 33.33, 5);
Open in Code Editor
This product is the concentration of the photosynthetic pigment (chlorophyll-a) in phytoplankton in the sea surface layer. This is an ongoing dataset with a latency of 3-4 days. GCOM-C conducts long-term and continuous global observation and data collection to elucidate the mechanism behind fluctuations in radiation budget and carbon cycle …
JAXA/GCOM-C/L3/OCEAN/CHLA/V3, chla,chlorophyll-a,g-portal,gcom,gcom-c,jaxa,ocean,ocean-color,oceans
2021-11-29T00:00:00Z/2025-10-25T00:00:00Z
-90 -180 90 180
Google Earth Engine