Send feedback
MOD09GQ.061 Terra Surface Reflectance Daily Global 250m
Stay organized with collections
Save and categorize content based on your preferences.
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.
MOD09GQ version 6.1 provides bands 1 and 2 at a 250m resolution in
a daily gridded L2G product in the Sinusoidal projection, including
a QC and five observation layers. This product is meant to be used
in conjunction with the MOD09GA where important quality and viewing
geometry information is stored.
Documentation:
Bands
Resolution
250 meters
Bands
Name
Min
Max
Scale
Wavelength
Description
num_observations
0
127
Number of observations per 250m pixel
sur_refl_b01
-100
16000
0.0001
620-670nm
Surface reflectance band 1
sur_refl_b02
-100
16000
0.0001
841-876nm
Surface reflectance for band 2
QC_250m
Surface reflectance quality assurance
Bitmask for QC_250m
Bits 0-1: MODLAND QA bits
0: Corrected product produced at ideal quality - all bands
1: Corrected product produced at less than ideal quality - some or all bands
2: Corrected product not produced due to cloud effects - all bands
3: Corrected product not produced for other reasons
- some or all bands, may be fill value (11) [Note that
a value of (11) overrides a value of (01)]
Bits 2-3: Spare (unused)
Bits 4-7: Band 1 data quality
0: Highest quality
7: Noisy detector
8: Dead detector, data interpolated in L1B
9: Solar zenith >= 86 degrees
10: Solar zenith >= 85 and < 86 degrees
11: Missing input
12: Internal constant used in place of climatological
data for at least one atmospheric constant
13: Correction out of bounds, pixel constrained
to extreme allowable value
14: L1B data faulty
15: Not processed due to deep ocean or clouds
Bits 8-11: Band 2 data quality
0: Highest quality
7: Noisy detector
8: Dead detector, data interpolated in L1B
9: Solar zenith >= 86 degrees
10: Solar zenith >= 85 and < 86 degrees
11: Missing input
12: Internal constant used in place of climatological
data for at least one atmospheric constant
13: Correction out of bounds, pixel constrained to extreme allowable value
14: L1B data faulty
15: Not processed due to deep ocean or clouds
Bit 12: Atmospheric correction performed
Bit 13: Adjacency correction performed
Bits 14-15: Spare (unused)
obscov
0
100
0.01
Observation coverage percent
iobs_res
0
254
Observation number
orbit_pnt
0
15
Orbit pointer
granule_pnt
0
254
Granule pointer
Terms of Use
Terms of Use
MODIS data and products acquired through the LP DAAC
have no restrictions on subsequent use, sale, or redistribution.
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 ( 'MODIS / 061 / MOD09GQ ')
. filter ( ee . Filter . date ( '2018 - 01 - 01 ', '2018 - 05 - 01 '));
var falseColorVis = {
min : - 100.0 ,
max : 8000.0 ,
bands : [ 'sur_refl_b02 ', 'sur_refl_b02 ', 'sur_refl_b01 '],
};
Map . setCenter ( 6.746 , 46.529 , 2 );
Map . addLayer ( dataset , falseColorVis , 'False Color ');
Open in Code Editor
[{
"type": "thumb-down",
"id": "missingTheInformationINeed",
"label":"Missing the information I need"
},{
"type": "thumb-down",
"id": "tooComplicatedTooManySteps",
"label":"Too complicated / too many steps"
},{
"type": "thumb-down",
"id": "outOfDate",
"label":"Out of date"
},{
"type": "thumb-down",
"id": "samplesCodeIssue",
"label":"Samples / code issue"
},{
"type": "thumb-down",
"id": "otherDown",
"label":"Other"
}]
[{
"type": "thumb-up",
"id": "easyToUnderstand",
"label":"Easy to understand"
},{
"type": "thumb-up",
"id": "solvedMyProblem",
"label":"Solved my problem"
},{
"type": "thumb-up",
"id": "otherUp",
"label":"Other"
}]
Need to tell us more?
{
"confidential": False
}