GCOM-C/SGLI L3 Leaf Area Index (V3)

Dataset Availability

2021-11-29T00:00:00Z–2024-11-09T00:00:00Z

Dataset Provider

Global Change Observation Mission (GCOM)

Earth Engine Snippet

ee.ImageCollection("JAXA/GCOM-C/L3/LAND/LAI/V3")

Tags

climate g-portal gcom gcom-c jaxa lai land leaf-area-index

Description

This product is the sum of the one-sided green leaf area per unit ground area.

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

Resolution
4638.3 meters

Bands

Name	Min	Max	Description
LAI_AVE	0*	65531*	The sum of the one-sided green leaf area per unit ground area.
LAI_QA_flag			LAI QA
Bitmask for LAI_QA_flag Bits 0-1: Terrain type 0: water (land fraction = 0%) 1: mostly water (0% < land fraction < 50%) 2: mostly coastal (50% < land fraction < 100%) 3: land (land fraction = 100%)

* 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
LAI_AVE_OFFSET	STRING	Offset
LAI_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:

• Kobayashi, T., Ono, Y., Kobayashi, H., Yang, W. (June. 2020). GCOM-C/SGLI Leaf Area Index (LAI)/ fraction of Absorbed Photosynthetically Active Radiation (fAPAR) Product Algorithm Theoretical Basis Document (Version 2). Retrieved from https://suzaku.eorc.jaxa.jp/GCOM_C/data/ATBD/ver2/V2ATBD_T2B_LAI_Kobayashi_r1.pdf

Explore with Earth Engine

Important: Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please register for Earth Engine access.

Code Editor (JavaScript)

var dataset = ee.ImageCollection('JAXA/GCOM-C/L3/LAND/LAI/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 dataset = dataset.mean().multiply(0.001);

var visualization = {
  bands: ['LAI_AVE'],
  min: -7,
  max: 7,
  palette: [
    '040274','040281','0502a3','0502b8','0502ce','0502e6',
    '0602ff','235cb1','307ef3','269db1','30c8e2','32d3ef',
    '3be285','3ff38f','86e26f','3ae237','b5e22e','d6e21f',
    'fff705','ffd611','ffb613','ff8b13','ff6e08','ff500d',
    'ff0000','de0101','c21301','a71001','911003',
  ]
};

Map.setCenter(128.45, 33.33, 5);

Map.addLayer(dataset, visualization, 'Leaf Area Index');

Open in Code Editor

GCOM-C/SGLI L3 Leaf Area Index (V3)

This product is the sum of the one-sided green leaf area per unit ground area. 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 …

JAXA/GCOM-C/L3/LAND/LAI/V3, climate,g-portal,gcom,gcom-c,jaxa,lai,land,leaf-area-index

2021-11-29T00:00:00Z/2024-11-09T00:00:00Z

Google Earth Engine

https://developers.google.com/earth-engine/datasets