MOD09A1.061 Terra Surface Reflectance 8-Day Global 500m

  • The MOD09A1 V6.1 product provides an estimate of the surface spectral reflectance of Terra MODIS bands 1-7 at 500m resolution, corrected for atmospheric conditions.

  • This dataset is available from 2000-02-18 to 2025-10-08 and is updated every 8 days.

  • In addition to seven reflectance bands, the product includes a quality layer and four observation bands.

  • Pixels are selected for the 8-day composite based on criteria like high observation coverage, low view angle, absence of clouds, and aerosol loading.

  • Data acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.
MODIS/061/MOD09A1
Dataset Availability
2000-02-18T00:00:00Z–2026-04-23T00:00:00Z
Dataset Producer
Earth Engine Snippet
ee.ImageCollection("MODIS/061/MOD09A1")
Cadence
8 Days
Tags
8-day global modis nasa satellite-imagery sr surface-reflectance terra usgs
mod09a1

Description

The MOD09A1 V6.1 product provides an estimate of the surface spectral reflectance of Terra MODIS bands 1-7 at 500m resolution and corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. Along with the seven reflectance bands is a quality layer and four observation bands. For each pixel, a value is selected from all the acquisitions within the 8-day composite on the basis of high observation coverage, low view angle, the absence of clouds or cloud shadow, and aerosol loading.

Documentation:

Bands

Bands

Pixel size: 500 meters (all bands)

Name Units Min Max Scale Pixel Size Wavelength Description
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
QA 500 meters None

Surface reflectance 500m band quality control flags
SolarZenith deg 0 18000 0.01 500 meters None

MODIS Solar zenith angle
ViewZenith deg 0 18000 0.01 500 meters None

MODIS view zenith angle
RelativeAzimuth deg -18000 18000 0.01 500 meters None

MODIS relative azimuth angle
StateQA 500 meters None

Surface reflectance 500m state flags
DayOfYear 1 366 500 meters None

Julian day of the year for the pixel

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 with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('MODIS/061/MOD09A1')
                  .filter(ee.Filter.date('2018-01-01', '2018-05-01'));
var trueColor =
    dataset.select(['sur_refl_b01', 'sur_refl_b04', 'sur_refl_b03']);
var trueColorVis = {
  min: -100.0,
  max: 3000.0,
};
Map.setCenter(6.746, 46.529, 6);
Map.addLayer(trueColor, trueColorVis, 'True Color');

Python setup

See the Python Environment page for information on the Python API and using geemap for interactive development.

import ee
import geemap.core as geemap

Colab (Python)

dataset = ee.ImageCollection('MODIS/061/MOD09A1').filter(
    ee.Filter.date('2018-01-01', '2018-05-01')
)

true_color = dataset.select(['sur_refl_b01', 'sur_refl_b04', 'sur_refl_b03'])

true_color_vis = {'min': -100.0, 'max': 3000.0}

m = geemap.Map()
m.set_center(6.746, 46.529, 6)
m.add_layer(true_color, true_color_vis, 'True Color')
m
Open in Code Editor
The MOD09A1 V6.1 product provides an estimate of the surface spectral reflectance of Terra MODIS bands 1-7 at 500m resolution and corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. Along with the seven reflectance bands is a quality layer and four observation bands. For each pixel, a …
MODIS/061/MOD09A1, 8-day,global,modis,nasa,satellite-imagery,sr,surface-reflectance,terra,usgs
2000-02-18T00:00:00Z/2026-04-23T00:00:00Z
-90 -180 90 180
Google Earth Engine