MOD17A3.055: Terra Net Primary Production Yearly Global 1km

MODIS/055/MOD17A3
Dataset Availability
2000-01-01T00:00:00 - 2015-01-01T00:00:00
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("MODIS/055/MOD17A3")
Tags
gpp npp psn productivity photosynthesis modis mod17a3 yearly global terra

Description

The MOD17A3 V055 product provides information about annual Gross and Net Primary Productivity (NPP) at 1km pixel resolution. Net Primary Productivity (NPP) defines the rate at which all plants in an ecosystem produce net useful chemical energy. In other words, NPP is equal to the difference between the rate at which plants in an ecosystem produce useful chemical energy (or GPP), and the rate at which they expend some of that energy for respiration.

The version 055 of the NPP product is produced by the Numerical Terradynamic Simulation Group (NTSG), University of Montana (UMT). It corrects the problem with cloud-contaminated MODIS LAI-FPAR inputs to the MOD17 algorithm. The original, uncorrected datasets constitute the version 4 NPP products. For further details regarding the differences between the NTSG and NASA versions of this product, please consult this document

Bands

Resolution
1000 meters

Bands

Name Units Min Max Scale Description
Gpp kg*C/m^2 0 65500 0.0001

Annual gross primary productivity

Npp kg*C/m^2 0 65500 0.0001

Annual net primary productivity

Gpp_Npp_QC % 0 100

Percentage of filled MOD15 LAI caused by cloud-contamination during a growing season (defined when daily minimum air temperatures are above -8°) in a year. A high value indicates a high frequency of cloud-contamination. For example, QA is high for tropical rainforests but low in arid areas.

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:

Explore in Earth Engine

var dataset = ee.ImageCollection('MODIS/055/MOD17A3')
                  .filter(ee.Filter.date('2014-01-01', '2014-05-01'));
var npp = dataset.select('Npp');
var nppVis = {
  min: 0.0,
  max: 18000.0,
  palette: ['bbe029', '0a9501', '074b03'],
};
Map.setCenter(6.746, 46.529, 3);
Map.addLayer(npp, nppVis, 'NPP');

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