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

AI-generated Key Takeaways

• This dataset, MOD17A3 V055, has been superseded by a newer version and provides annual Gross and Net Primary Productivity (NPP) data at 1km resolution.

• NPP represents the rate at which plants in an ecosystem produce net useful chemical energy, calculated as the difference between Gross Primary Productivity (GPP) and respiration.

• The dataset covers the period from 2000-01-01 to 2014-01-01 and was produced by the Numerical Terradynamic Simulation Group (NTSG) at the University of Montana.

• It includes three bands: Gpp (gross primary productivity), Npp (net primary productivity), and Gpp_Npp_QC (quality control representing cloud contamination).

• MODIS data and products acquired through the LP DAAC have no restrictions on subsequent use, sale, or redistribution.

Caution: This dataset has been superseded by MODIS/061/MOD17A3HGF.

Dataset Availability

2000-01-01T00:00:00Z–2014-01-01T00:00:00Z

Dataset Provider

NASA LP DAAC at the USGS EROS Center

Earth Engine Snippet

ee.ImageCollection("MODIS/055/MOD17A3")

Cadence

1 Year

Tags

global

gpp

mod17a3

modis

npp

photosynthesis

plant-productivity

productivity

psn

terra

yearly

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

Pixel Size
1000 meters

Bands

Name	Units	Min	Max	Scale	Pixel Size	Description
Gpp	kg*C/m^2	0	65500	0.0001	meters	Annual gross primary productivity
Npp	kg*C/m^2	0	65500	0.0001	meters	Annual net primary productivity
Gpp_Npp_QC	%	0	100		meters	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:

• Please visit LP DAAC 'Citing Our Data' page for information on citing LP DAAC datasets.

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Code Editor (JavaScript)

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,
  max: 18000,
  palette: ['bbe029', '0a9501', '074b03'],
};
Map.setCenter(6.746, 46.529, 3);
Map.addLayer(npp, nppVis, 'NPP');

Open in Code Editor

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

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 …

MODIS/055/MOD17A3, global,gpp,mod17a3,modis,npp,photosynthesis,plant-productivity,productivity,psn,terra,yearly

2000-01-01T00:00:00Z/2014-01-01T00:00:00Z

-90 -180 90 180

Google Earth Engine

https://developers.google.com/earth-engine/datasets