GCOM-C/SGLI L3 Chlorophyll-a concentration (V1)

JAXA/GCOM-C/L3/OCEAN/CHLA/V1
Dataset Availability
2018-01-01T00:00:00 - 2020-06-28T00:00:00
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("JAXA/GCOM-C/L3/OCEAN/CHLA/V1")
Tags
climate ocean ocean-color chlorophyll-a chla g-portal gcom gcom-c jaxa

Description

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

A newer version JAXA/GCOM-C/L3/OCEAN/CHLA/V2 is also available for this dataset which uses this algorithm for processing.

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

Resolution
2.5 arc minutes

Bands

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

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

CHLA_QA_flag

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

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:
  • Murakami, H. (Oct. 2018). ATBD of GCOM-C chlorophyll-a concentration algorithm (Version 1). Retrieved from https://suzaku.eorc.jaxa.jp/GCOM_C/data/ATBD/ver1/SGLI_Chla_algorithm_v10.pdf

Explore in Earth Engine

var dataset = ee.ImageCollection("JAXA/GCOM-C/L3/OCEAN/CHLA/V1")
                .filterDate('2020-01-01', '2020-02-01');

// 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);