MYD17A3H.006: Aqua Net Primary Production Yearly Global 500m [deprecated]

AI-generated Key Takeaways

• This MODIS dataset (MYD17A3H V6) provides annual Net Primary Productivity (NPP) data at 500m resolution from 2002 to 2014.

• NPP is calculated from the sum of 8-day Net Photosynthesis (PSN) values, derived as the difference between Gross Primary Productivity (GPP) and Maintenance Respiration (MR).

• This dataset has been superseded by a newer version, MODIS/006/MYD17A3HGF, which users are encouraged to utilize instead.

• The data is freely available for use, sale, or redistribution without restrictions.

• An alternative version of this product with 1km resolution, produced by the Numerical Terradynamic Simulation Group (NTSG), is available as MODIS/055/MOD17A3.

Caution: This dataset has been superseded by MODIS/006/MYD17A3HGF.

Dataset Availability

2002-01-01T00:00:00Z–2014-01-01T00:00:00Z

Dataset Provider

NASA LP DAAC at the USGS EROS Center

Earth Engine Snippet

ee.ImageCollection("MODIS/006/MYD17A3H")

Cadence

1 Year

Tags

aqua

global

gpp

modis

myd17a3

nasa

npp

photosynthesis

plant-productivity

productivity

psn

usgs

yearly

Description

The MYD17A3H V6 product provides information about annual Net Primary Productivity (NPP) at 500m pixel resolution. Annual NPP is derived from the sum of the 45 8-day Net Photosynthesis (PSN) products (MYD17A2H) from the given year. The PSN value is the difference of the GPP and the Maintenance Respiration (MR) (GPP-MR).

This is a NASA version of this product. Another version is produced by the Numerical Terradynamic Simulation Group (NTSG), University of Montana (UMT). The NTSG version corrects the problem with cloud-contaminated MODIS LAI-FPAR inputs to the MOD17 algorithm, but its resolution is 1km. It is ingested into Earth Engine as MODIS/055/MOD17A3.

For further details regarding the differences between the NTSG and NASA versions of this product, please consult this document .

Bands

Pixel Size
500 meters

Bands

Name	Units	Min	Max	Scale	Pixel Size	Description
Npp	kg*C/m^2	-3000	32700	0.0001	meters	Net primary productivity
Npp_QC					meters	Quality control bits
Bitmask for Npp_QC Bit 0: MODLAND QC bits 0: Good quality 1: Other quality Bit 1: Sensor 0: Terra 1: Aqua 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.

Citations

Citations:

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

DOIs

• https://doi.org/10.5067/MODIS/MYD17A3H.006

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Code Editor (JavaScript)

var dataset = ee.ImageCollection('MODIS/006/MYD17A3H')
                  .filter(ee.Filter.date('2014-01-01', '2014-05-01'));

var npp = dataset.select('Npp');
var nppVis = {
  min: 0.0,
  max: 19000.0,
  palette: ['bbe029', '0a9501', '074b03'],
};
Map.setCenter(6.746, 46.529, 2);
Map.addLayer(npp, nppVis, 'NPP');

Open in Code Editor

MYD17A3H.006: Aqua Net Primary Production Yearly Global 500m [deprecated]

The MYD17A3H V6 product provides information about annual Net Primary Productivity (NPP) at 500m pixel resolution. Annual NPP is derived from the sum of the 45 8-day Net Photosynthesis (PSN) products (MYD17A2H) from the given year. The PSN value is the difference of the GPP and the Maintenance Respiration (MR) …

MODIS/006/MYD17A3H, aqua,global,gpp,modis,myd17a3,nasa,npp,photosynthesis,plant-productivity,productivity,psn,usgs,yearly

2002-01-01T00:00:00Z/2014-01-01T00:00:00Z

-90 -180 90 180

Google Earth Engine

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

• https://doi.org/10.5067/MODIS/MYD17A3H.006
• https://doi.org/10.5067/MODIS/MYD17A3H.006