MOD09GA.006 Terra Surface Reflectance Daily Global 1km and 500m

MODIS/006/MOD09GA
Dataset Availability
2000-02-24T00:00:00 - 2020-11-24T00:00:00
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("MODIS/006/MOD09GA")
Tags
surface-reflectance sr modis mod09ga daily global usgs nasa terra

Description

The MODIS Surface Reflectance products provide an estimate of the surface spectral reflectance as it would be measured at ground level in the absence of atmospheric scattering or absorption. Low-level data are corrected for atmospheric gases and aerosols. MOD09GA version 6 provides bands 1-7 in a daily gridded L2G product in the sinusoidal projection, including 500m reflectance values and 1km observation and geolocation statistics.

Documentation:

Bands

Bands

Name Units Min Max Scale Pixel Size Wavelength Description
num_observations_1km 2 127 1000 meters

Number of observations per 1K pixel

state_1km 1000 meters

Reflectance data state QA

SensorZenith Degrees 0 18000 0.01

Sensor zenith angle

SensorAzimuth Degrees -18000 18000 0.01

Sensor azimuth angle

Range Meters 27000 65535 25 1000 meters

Distance to sensor

SolarZenith Degrees 0 18000 0.01

Solar zenith angle

SolarAzimuth Degrees -18000 18000 0.01

Solar azimuth angle

gflags 1000 meters

Geolocation flags

orbit_pnt 0 15 1000 meters

Orbit pointer

granule_pnt 0 254 1000 meters

Granule pointer

num_observations_500m 0 127 500 meters

Number of observations

sur_refl_b01 -100 16000 0.0001 500 meters 620-670nm

Surface reflectance for band 1

sur_refl_b02 -100 16000 0.0001 500 meters 841-876nm

Surface reflectance for band 2

sur_refl_b03 -100 16000 0.0001 500 meters 459-479nm

Surface reflectance for band 3

sur_refl_b04 -100 16000 0.0001 500 meters 545-565nm

Surface reflectance for band 4

sur_refl_b05 -100 16000 0.0001 500 meters 1230-1250nm

Surface reflectance for band 5

sur_refl_b06 -100 16000 0.0001 500 meters 1628-1652nm

Surface reflectance for band 6

sur_refl_b07 -100 16000 0.0001 500 meters 2105-2155nm

Surface reflectance for band 7

QC_500m 500 meters

Surface reflectance quality assurance

obscov_500m 0 100 500 meters

Observation coverage percent

iobs_res 0 254 500 meters

Observation number in coarser grid

q_scan 500 meters

250m scan value information

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:

DOIs

Explore in Earth Engine

var dataset = ee.ImageCollection('MODIS/006/MOD09GA')
                  .filter(ee.Filter.date('2018-04-01', '2018-06-01'));
var trueColor143 =
    dataset.select(['sur_refl_b01', 'sur_refl_b04', 'sur_refl_b03']);
var trueColor143Vis = {
  min: -100.0,
  max: 8000.0,
};
Map.setCenter(-7.03125, 31.0529339857, 2);
Map.addLayer(trueColor143, trueColor143Vis, 'True Color (143)');