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MOD09CMG.061 Terra Surface Reflectance Daily L3 Global 0.05 Deg CMG
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Description
The MOD09CMG Version 6.1 product provides an estimate of the surface
spectral reflectance of Terra Moderate Resolution Imaging Spectroradiometer
(MODIS) Bands 1 through 7, resampled to 5600 meter pixel resolution and
corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh
scattering. The MOD09CMG data product provides 25 layers including MODIS
bands 1 through 7; Brightness Temperature data from thermal bands 20, 21,
31, and 32; along with Quality Assurance (QA) and observation bands.
This product is based on a Climate Modeling Grid (CMG) for use in climate
simulation models.
Documentation:
Bands
Pixel Size
Bands
Name
Units
Min
Max
Pixel Size
Wavelength
Description
Coarse_Resolution_Surface_Reflectance_Band_1Dimensionless
-0.01
1.6
meters
620-670nm
Surface reflectance for band 1
Coarse_Resolution_Surface_Reflectance_Band_2Dimensionless
-0.01
1.6
meters
841-876nm
Surface reflectance for band 2
Coarse_Resolution_Surface_Reflectance_Band_3Dimensionless
-0.01
1.6
meters
459-479nm
Surface reflectance for band 3
Coarse_Resolution_Surface_Reflectance_Band_4Dimensionless
-0.01
1.6
meters
545-565nm
Surface reflectance for band 4
Coarse_Resolution_Surface_Reflectance_Band_5Dimensionless
-0.01
1.6
meters
1230-1250nm
Surface reflectance for band 5
Coarse_Resolution_Surface_Reflectance_Band_6Dimensionless
-0.01
1.6
meters
1628-1652nm
Surface reflectance for band 6
Coarse_Resolution_Surface_Reflectance_Band_7Dimensionless
-0.01
1.6
meters
2105-2155nm
Surface reflectance for band 7
Coarse_Resolution_Solar_Zenith_Angledeg
0
180
meters
None
Solar Zenith Angle
Coarse_Resolution_View_Zenith_Angledeg
0
180
meters
None
View Zenith Angle
Coarse_Resolution_Relative_Azimuth_Angledeg
-180
180
meters
None
Relative Azimuth Angle
Coarse_Resolution_Ozoneatm cm
0.0025
0.6375
meters
None
Ozone Resolution
Coarse_Resolution_Brightness_Temperature_Band_20K
0.01
400
meters
3.360-3.840µm
Band 20 Brightness Temperature
Coarse_Resolution_Brightness_Temperature_Band_21K
0.01
400
meters
3.929-3.989µm
Band 21 Brightness Temperature
Coarse_Resolution_Brightness_Temperature_Band_31K
0.01
400
meters
10.780-11.280µm
Band 31 Brightness Temperature
Coarse_Resolution_Brightness_Temperature_Band_32K
0.01
400
meters
11.770-12.270µm
Band 32 Brightness Temperature
Coarse_Resolution_Granule_Time
1
2355
meters
None
Granule time of day, as HHMM
Coarse_Resolution_Band_3_Path_RadianceDimensionless
-0.01
1.6
meters
None
Band 3 Radiance
Coarse_Resolution_QA
meters
None
Quality Assurance
Bitmask for Coarse_Resolution_QA
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 2-5: Band 1 data quality, four bit range
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 6-9: Band 2 data quality, four bit range
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 10-13: Band 3 data quality, four bit range
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 14-17: Band 4 data quality, four bit range
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 18-21: Band 5 data quality, four bit range
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 22-25: Band 6 data quality, four bit range
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 26-29: Band 7 data quality, four bit range
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 30: Atmospheric correction performed
Bit 31: Adjacency correction performed
Coarse_Resolution_Internal_CM
meters
None
Internal Cloud Mask
Bitmask for Coarse_Resolution_Internal_CM
Bit 0: Cloudy
Bit 1: Clear
Bit 2: High clouds
Bit 3: Low clouds
Bit 4: Snow
Bit 5: Fire
Bit 6: Sun glint
Bit 7: Dust
Bit 8: Cloud shadow
Bit 9: Pixel is adjacent to cloud
Bits 10-11: Cirrus
0: None
1: Small
2: Average
3: High
Bit 12: Pan flag
0: No salt pan
1: Salt pan
Bit 13: Criteria used for aerosol retrieval
0: Criterion 1
1: Criterion 2
Bit 14: AOT (aerosol optical thickness) has climatological values
Bit 15: Pixel has interpolated TR, PR or SA data
Coarse_Resolution_State_QA
meters
None
State Quality Assurance
Bitmask for Coarse_Resolution_State_QA
Bits 0-1: Cloud state
0: Clear
1: Cloudy
2: Mixed
3: Not set, assumed clear
Bit 2: Cloud shadow
Bits 3-5: Land/water flag
0: Shallow ocean
1: Land
2: Ocean coastlines and lake shorelines
3: Shallow inland water
4: Ephemeral water
5: Deep inland water
6: Continental/moderate ocean
7: Deep ocean
Bits 6-7: Aerosol quantity
0: Climatology
1: Low
2: Average
3: High
Bits 8-9: Cirrus detected
0: None
1: Small
2: Average
3: High
Bit 10: Internal cloud algorithm flag
Bit 11: Internal fire algorithm flag
Bit 12: MOD35 snow/ice flag
Bit 13: Pixel is adjacent to cloud
Bit 14: BRDF correction performed data
Bit 15: Internal snow mask
Coarse_Resolution_Number_Mapping
meters
None
Number Mapping Cloud/Snow
Bitmask for Coarse_Resolution_Number_Mapping
Bits 0-7: Number of pixel mapping flagged as cloudy
Bits 8-15: Number of pixel mapping flagged as cloud shadow
Bits 16-23: Number of pixel mapping flagged as adjacent to cloud
Bits 24-31: Number of pixel mapping flagged for snow
number_of_500m_pixels_averaged_b3
1
200
meters
None
Number of 500m pixels used in average
number_of_500m_rej_detector
1
100
meters
None
Number of 500m pixels rejected for use
number_of_250m_pixels_averaged_b1-2
1
640
meters
None
Number of 250m pixels used in b1-2 average
n_pixels_averaged
1
40
meters
None
Number of pixels used in average
Terms of Use
Terms of Use
MODIS data and products acquired through the LP DAAC
have no restrictions on subsequent use, sale, or redistribution.
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Code Editor (JavaScript)
var dataset = ee . ImageCollection ( 'MODIS/061/MOD09CMG' )
. filter ( ee . Filter . date ( '2018-01-01' , '2018-05-01' ));
var trueColor =
dataset . select ([
'Coarse_Resolution_Surface_Reflectance_Band_1' ,
'Coarse_Resolution_Surface_Reflectance_Band_2' ,
'Coarse_Resolution_Surface_Reflectance_Band_3'
]);
var trueColorVis = {
min : - 0.4 ,
max : 1.0 ,
};
Map . setCenter ( 6.746 , 46.529 , 6 );
Map . addLayer ( trueColor , trueColorVis , 'True Color' );
Open in Code Editor
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[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],[],[[["MOD09CMG V6.1 provides daily surface spectral reflectance for Terra MODIS Bands 1-7, corrected for atmospheric conditions, at 5600-meter resolution."],["The product includes 25 layers, featuring Bands 1-7 reflectance, Brightness Temperature for thermal bands 20, 21, 31, and 32, plus QA and observation bands."],["Data is based on a Climate Modeling Grid (CMG) and is available from February 24, 2000 to December 10, 2024."],["MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution."]]],[]]
