MOD44B.006 Terra Vegetation Continuous Fields Yearly Global 250m

Dataset Availability

2000-03-05T00:00:00Z–2020-03-05T00:00:00Z

Dataset Provider

NASA LP DAAC at the USGS EROS Center

Earth Engine Snippet

ee.ImageCollection("MODIS/006/MOD44B")

Cadence

1 Year

Tags

annual geophysical global modis nasa terra tree-cover vegetation

mod44b

Description

The Terra MODIS Vegetation Continuous Fields (VCF) product is a sub-pixel-level representation of surface vegetation cover estimates globally. Designed to continuously represent Earth's terrestrial surface as a proportion of basic vegetation traits, it provides a gradation of three surface cover components: percent tree cover, percent non-tree cover, and percent bare. VCF products provide a continuous, quantitative portrayal of land surface cover with improved spatial detail, and hence, are widely used in environmental modeling and monitoring applications.

Generated yearly, the VCF product is produced using monthly composites of Terra MODIS 250 and 500 meters Land Surface Reflectance data, including all seven bands, and Land Surface Temperature.

Documentation:

• User's Guide

• Algorithm Theoretical Basis Document (ATBD)

• General Documentation

Bands

Resolution
250 meters

Bands

Name	Units	Min	Max	Scale	Description
Percent_Tree_Cover	%	0	100		Percent of a pixel which is covered by tree canopy
Percent_NonTree_Vegetation	%	0	100		Percent of a pixel which is covered by non-tree vegetation
Percent_NonVegetated	%	0	100		Percent of a pixel which is not vegetated
Quality					Describes those inputs that had poor quality (cloudy, high aerosol, cloud shadow, or view zenith >45°). Each bit in the field represents 1 out of 8 input surface reflectance files to the model.
Bitmask for Quality Bit 0: State of input layers DOY 065-097 0: Clear 1: Bad Bit 1: State of input layers DOY 113-145 0: Clear 1: Bad Bit 2: State of input layers DOY 161-193 0: Clear 1: Bad Bit 3: State of input layers DOY 209-241 0: Clear 1: Bad Bit 4: State of input layers DOY 257-289 0: Clear 1: Bad Bit 5: State of input layers DOY 305-337 0: Clear 1: Bad Bit 6: State of input layers DOY 353-017 0: Clear 1: Bad Bit 7: State of input layers DOY 033-045 0: Clear 1: Bad
Percent_Tree_Cover_SD	%	0	32767	0.01	Standard deviation (SD) of the 30 models that were used to generate the pixel value in the percent tree cover data layer
Percent_NonVegetated_SD	%	0	32767	0.01	Standard deviation (SD) of the 30 models that were used to generate the pixel value in the percent non-vegetated data layer
Cloud					Clarifies the 'Quality' layer to give the user an indication that the 'bad' data refers to cloudy input data. Each bit in the field represents 1 out of 8 input surface reflectance files to the model.
Bitmask for Cloud Bit 0: State of input layers DOY 065-097 0: Clear 1: Cloudy Bit 1: State of input layers DOY 113-145 0: Clear 1: Cloudy Bit 2: State of input layers DOY 161-193 0: Clear 1: Cloudy Bit 3: State of input layers DOY 209-241 0: Clear 1: Cloudy Bit 4: State of input layers DOY 257-289 0: Clear 1: Cloudy Bit 5: State of input layers DOY 305-337 0: Clear 1: Cloudy Bit 6: State of input layers DOY 353-017 0: Clear 1: Cloudy Bit 7: State of input layers DOY 033-045 0: Clear 1: Cloudy

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/006/MOD44B');

var visualization = {
  bands: ['Percent_Tree_Cover'],
  min: 0,
  max: 100,
  palette: ['bbe029', '0a9501', '074b03']
};

Map.setCenter(6.746, 46.529, 3);

Map.addLayer(dataset, visualization, 'Percent Tree Cover');

Open in Code Editor

MOD44B.006 Terra Vegetation Continuous Fields Yearly Global 250m

The Terra MODIS Vegetation Continuous Fields (VCF) product is a sub-pixel-level representation of surface vegetation cover estimates globally. Designed to continuously represent Earth's terrestrial surface as a proportion of basic vegetation traits, it provides a gradation of three surface cover components: percent tree cover, percent non-tree cover, and percent bare. …

MODIS/006/MOD44B, annual,geophysical,global,modis,nasa,terra,tree-cover,vegetation

2000-03-05T00:00:00Z/2020-03-05T00:00:00Z

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