Hansen Global Forest Change v1.10 (2000-2022) [deprecated]

  • This dataset provides results from time-series analysis of Landsat images showing global forest extent and change from 2000 to 2022.

  • The dataset includes bands representing tree canopy cover in 2000, forest loss during the study period, forest gain from 2000-2012, year of forest loss, and reference multispectral imagery.

  • This specific version of the dataset has been superseded by a newer version.
UMD/hansen/global_forest_change_2022_v1_10
Dataset Availability
2000-01-01T00:00:00Z–2022-01-01T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.Image("UMD/hansen/global_forest_change_2022_v1_10")
Tags
forest
forest-biomass
geophysical
hansen
landsat-derived
umd

Description

Results from time-series analysis of Landsat images in characterizing global forest extent and change.

The 'first' and 'last' bands are reference multispectral imagery from the first and last available years for Landsat spectral bands corresponding to red, NIR, SWIR1, and SWIR2. Reference composite imagery represents median observations from a set of quality-assessed growing-season observations for each of these bands.

Please see the User Notes for this Version 1.10 update, as well as the associated journal article: Hansen, Potapov, Moore, Hancher et al. "High-resolution global maps of 21st-century forest cover change." Science 342.6160 (2013): 850-853.

Bands

Pixel Size
30.92 meters

Bands

Name Units Min Max Pixel Size Wavelength Description
treecover2000 % 0 100 meters None

Tree canopy cover for year 2000, defined as canopy closure for all vegetation taller than 5m in height.
loss meters None

Forest loss during the study period, defined as a stand-replacement disturbance (a change from a forest to non-forest state).
gain meters None

Forest gain during the period 2000-2012, defined as the inverse of loss (a non-forest to forest change entirely within the study period). Note that this has not been updated in subsequent versions.
first_b30 meters 0.63-0.69µm

Landsat 7 band 3 (red) cloud-free image composite. Reference multispectral imagery from the first available year, typically 2000.
first_b40 meters 0.77-0.90µm

Landsat 7 band 4 (NIR) cloud-free image composite. Reference multispectral imagery from the first available year, typically 2000.
first_b50 meters 1.55-1.75µm

Landsat 7 band 5 (SWIR) cloud-free image composite. Reference multispectral imagery from the first available year, typically 2000.
first_b70 meters 2.09-2.35µm

Landsat 7 band 7 (SWIR) cloud-free image composite. Reference multispectral imagery from the first available year, typically 2000.
last_b30 meters 0.63-0.69µm

Landsat 7 band 3 (red) cloud-free image composite. Reference multispectral imagery from the last available year, typically the last year of the study period.
last_b40 meters 0.77-0.90µm

Landsat 7 band 4 (NIR) cloud-free image composite. Reference multispectral imagery from the last available year, typically the last year of the study period.
last_b50 meters 1.55-1.75µm

Landsat 7 band 5 (SWIR) cloud-free image composite. Reference multispectral imagery from the last available year, typically the last year of the study period.
last_b70 meters 2.09-2.35µm

Landsat 7 band 7 (SWIR) cloud-free image composite. Reference multispectral imagery from the last available year, typically the last year of the study period.
datamask meters None

Three values representing areas of no data, mapped land surface, and permanent water bodies.
lossyear 0 22 meters None

Year of gross forest cover loss event. Forest loss during the study period, defined as a stand-replacement disturbance, or a change from a forest to non-forest state. Encoded as either 0 (no loss) or else a value in the range 1-22, representing loss detected primarily in the year 2001-2022, respectively.

Terms of Use

Terms of Use

CC-BY-4.0

Citations

Citations:

  • Hansen, M. C., P. V. Potapov, R. Moore, M. Hancher, S. A. Turubanova, A. Tyukavina, D. Thau, S. V. Stehman, S. J. Goetz, T. R. Loveland, A. Kommareddy, A. Egorov, L. Chini, C. O. Justice, and J. R. G. Townshend. 2013. "High-Resolution Global Maps of 21st-Century Forest Cover Change." Science 342 (15 November): 850-53. 10.1126/science.1244693 Data available on-line at: https://glad.earthengine.app/view/global-forest-change.

DOIs

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.Image('UMD/hansen/global_forest_change_2022_v1_10');
var treeCoverVisParam = {
  bands: ['treecover2000'],
  min: 0,
  max: 100,
  palette: ['black', 'green']
};
Map.addLayer(dataset, treeCoverVisParam, 'tree cover');

var treeLossVisParam = {
  bands: ['lossyear'],
  min: 0,
  max: 22,
  palette: ['yellow', 'red']
};
Map.addLayer(dataset, treeLossVisParam, 'tree loss year');
Open in Code Editor
Results from time-series analysis of Landsat images in characterizing global forest extent and change. The 'first' and 'last' bands are reference multispectral imagery from the first and last available years for Landsat spectral bands corresponding to red, NIR, SWIR1, and SWIR2. Reference composite imagery represents median observations from a set …
UMD/hansen/global_forest_change_2022_v1_10, forest,forest-biomass,geophysical,landsat-derived,umd
2000-01-01T00:00:00Z/2022-01-01T00:00:00Z
-90 -180 90 180
Google Earth Engine