MCD18C2.061 Photosynthetically Active Radiation Daily 3-Hour

Dataset Availability

2002-02-24T00:00:00Z–2024-06-01T00:00:00Z

Dataset Provider

NASA LP DAAC at the USGS EROS Center

Earth Engine Snippet

ee.ImageCollection("MODIS/061/MCD18C2")

Cadence

1 Day

Tags

par radiation

Description

Note: As of July 2024, the MCD18 V6.1 datasets are no longer being produced as they have been superseded by V6.2. We are working on adding the new version to the catalog.

The MCD18C2 Version 6.1 is a Moderate Resolution Imaging Spectroradiometer (MODIS) Terra and Aqua combined Photosynthetically Active Radiation (PAR) gridded Level 3 product produced daily at 0.05 degree (5,600 meters at the equator) resolution with estimates of PAR every 3 hours. PAR is incident solar radiation in the visible spectrum (400-700 nanometers) and is an important variable in land-surface models that address a variety of scientific and application issues. The MCD18 products are based on a prototyping algorithm that uses multi-temporal signatures of MODIS data to derive surface reflectance and then calculate incident PAR using the look-up table (LUT) approach. The LUTs consider different types of loadings of aerosols and clouds at a variety of illumination/viewing geometry. Global PAR products are generated from MODIS and geostationary satellite data. Additional details regarding the methodology used to create the data are available in the Algorithm Theoretical Basis Document

Provided in the MOD18C2 product are layers for instantaneous PAR array for each individual MODIS overpass and 3-hour PAR array along with a View Zenith Angle layer.

Bands

Resolution
500 meters

Bands

Name	Description
GMT_0000_PAR	Total PAR at GMT 00:00
GMT_0300_PAR	Total PAR at GMT 03:00
GMT_0600_PAR	Total PAR at GMT 06:00
GMT_0900_PAR	Total PAR at GMT 09:00
GMT_1200_PAR	Total PAR at GMT 12:00
GMT_1500_PAR	Total PAR at GMT 15:00
GMT_1800_PAR	Total PAR at GMT 18:00
GMT_2100_PAR	Total PAR at GMT 21:00

Terms of Use

Terms of Use

MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.

Citations

Citations:

• Please visit LP DAAC 'Citing Our Data' page for information on citing LP DAAC datasets.

DOIs

• https://doi.org/10.5067/MODIS/MCD18C2.061

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Code Editor (JavaScript)

var dataset = ee.ImageCollection('MODIS/061/MCD18C2')
                  .filter(ee.Filter.date('2001-01-01', '2001-02-01'));
var gmt_1200_par = dataset.select('GMT_1200_PAR');
var gmt_1200_par_vis = {
  min: -236,
  max: 316,
  palette: ['0f17ff', 'b11406', 'f1ff23'],
};
Map.setCenter(6.746, 46.529, 2);
Map.addLayer(
    gmt_1200_par, gmt_1200_par_vis,
    'Total PAR at GMT 12:00');

Open in Code Editor

MCD18C2.061 Photosynthetically Active Radiation Daily 3-Hour

Note: As of July 2024, the MCD18 V6.1 datasets are no longer being produced as they have been superseded by V6.2. We are working on adding the new version to the catalog. The MCD18C2 Version 6.1 is a Moderate Resolution Imaging Spectroradiometer (MODIS) Terra and Aqua combined Photosynthetically Active Radiation …

MODIS/061/MCD18C2, par,radiation

2002-02-24T00:00:00Z/2024-06-01T00:00:00Z

Google Earth Engine

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

• https://doi.org/10.5067/MODIS/MCD18C2.061