- Dataset Availability
- 2002-02-24T00:00:00Z–2024-03-01T00:00:00Z
- Dataset Provider
- NASA LP DAAC at the USGS EROS Center
- Earth Engine Snippet
-
ee.ImageCollection("MODIS/061/MCD18C2") - Tags
Description
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
Please visit LP DAAC 'Citing Our Data' page for information on citing LP DAAC datasets.
DOIs
Explore with Earth Engine
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');