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MYD09Q1.061 Aqua Surface Reflectance 8-Day Global 250m
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Description
The MYD09Q1 product provides an estimate of the surface
spectral reflectance of bands 1 and 2 at 250m resolution and corrected
for atmospheric conditions such as gasses, aerosols, and Rayleigh
scattering. Along with the two reflectance bands, a quality layer
is also included. 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
Resolution
250 meters
Bands
Name
Min
Max
Scale
Wavelength
Description
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
State
Surface reflectance 250m state flags
Bitmask for State
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
QA
Surface reflectance 250m band quality control flags
Bitmask for 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 2-3: 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
Bit 14: Different orbit from 500m
Bit 15: Spare (unused)
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 / MYD09Q1 ')
. filter ( ee . Filter . date ( '2018 - 01 - 01 ', '2018 - 05 - 01 '));
var falseColorVis = {
min : - 100.0 ,
max : 6000.0 ,
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"
}]
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