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MOD17A2HGF.061: Terra Gross Primary Productivity 8-Day Global 500m
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Description
The MOD17A2HGF Version 6.1 Gross Primary Productivity (GPP) product
is a cumulative 8-day composite of values with 500 meter (m) pixel size
based on the radiation use efficiency concept that can be potentially used
as inputs to data models to calculate terrestrial energy, carbon,
water cycle processes, and biogeochemistry of vegetation.
Documentation:
Bands
Resolution
500 meters
Bands
Name
Units
Min
Max
Scale
Description
Gpp
kg*C/m^2
0
3000
0.0001
Gross primary production
PsnNet
kg*C/m^2
-3000
3000
0.0001
Net photosynthesis; GPP minus the maintenance respiration (MR)
Psn_QC
Quality control bits
Bitmask for Psn_QC
Bit 0: MODLAND QC bits
0: Good quality
1: Other quality
Bit 1: Sensor
Bit 2: Dead detector
0: Detectors apparently fine for up to 50% of channels 1, 2
1: Dead detectors caused >50% adjacent detector retrieval
Bits 3-4: Cloud state
0: Significant clouds NOT present (clear)
1: Significant clouds WERE present
2: Mixed cloud present on pixel
3: Cloud state not defined, assumed clear
Bits 5-7: 5-level confidence quality score
0: Very best possible
1: Good, very usable, but not the best
2: Substandard due to geometry problems - use with caution
3: Substandard due to other than geometry problems - use with caution
4: Couldn't retrieve pixel (NOT PRODUCED AT ALL - non-terrestrial biome)
7: Fill Value
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/MOD17A2HGF')
.filter(ee.Filter.date('2021-01-01', '2021-05-01'));
var gpp = dataset.select('Gpp');
var gppVis = {
min: 0,
max: 600,
palette: ['bbe029', '0a9501', '074b03'],
};
Map.setCenter(6.746, 46.529, 2);
Map.addLayer(gpp, gppVis, 'GPP');
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"label":"Out of date"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?
{}
[[["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"]],[]]