Tsinghua FROM-GLC Year of Change to Impervious Surface

Tsinghua/FROM-GLC/GAIA/v10
Dataset Availability
1985-01-01T00:00:00Z–2018-12-31T00:00:00Z
Dataset Provider
Earth Engine Snippet
ee.Image("Tsinghua/FROM-GLC/GAIA/v10")
Tags
built population tsinghua urban
development
impervious

Description

This dataset contains annual change information of global impervious surface area from 1985 to 2018 at a 30m resolution. Change from pervious to impervious was determined using a combined approach of supervised classification and temporal consistency checking. Impervious pixels are defined as above 50% impervious. The year of the transition (from pervious to impervious) can be identified from the pixel value, ranging from 34 (year: 1985) to 1 (year: 2018). For example, the impervious surface in 1990 can be revealed as the pixel value greater than 29 (see the lookup table). This dataset is temporally consistent, following the conversion from pervious (e.g., non-urban) to impervious (e.g., urban) monotonically. For more information about the mapping approach and assessment, see Annual maps of global artificial impervious area (GAIA) between 1985 and 2018 (Gong et al. 2020).

Bands

Pixel Size
30 meters

Bands

Name Min Max Pixel Size Description
change_year_index 1* 34* meters

Year of the transition from from pervious to impervious. From 34 (year: 1985) to 1 (year: 2018)
* estimated min or max value

change_year_index Class Table

Value Color Description
1 #014352

2018
2 #1a492c

2017
3 #071ec4

2016
4 #b5ca36

2015
5 #729eac

2014
6 #8ea5de

2013
7 #818991

2012
8 #62a3c3

2011
9 #ccf4fe

2010
10 #74f0b9

2009
11 #32bc55

2008
12 #c72144

2007
13 #56613b

2006
14 #c14683

2005
15 #c31c25

2004
16 #5f6253

2003
17 #11bf85

2002
18 #a61b26

2001
19 #99fbc5

2000
20 #188aaa

1999
21 #c2d7f1

1998
22 #b7d9d8

1997
23 #856f96

1996
24 #109c6b

1995
25 #2de3f4

1994
26 #9a777d

1993
27 #151796

1992
28 #c033d8

1991
29 #510037

1990
30 #640c21

1989
31 #31a191

1988
32 #223ab0

1987
33 #b692ac

1986
34 #2de3f4

1985

Terms of Use

Terms of Use

This work is licensed under a Creative Commons Attribution 4.0 International License. https://creativecommons.org/licenses/by/4.0/

Citations

Citations:

  • Gong, P., Li, X., Wang, J., Bai, Y., Chen, B., Hu, T., ... & Zhou, Y. (2020). Annual maps of global artificial impervious area (GAIA) between 1985 and 2018. Remote Sensing of Environment, 236, 111510.

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.Image('Tsinghua/FROM-GLC/GAIA/v10');

var visualization = {
  bands: ['change_year_index'],
  min: 0,
  max: 34,
  palette: [
    '014352', '1a492c', '071ec4', 'b5ca36', '729eac', '8ea5de',
    '818991', '62a3c3', 'ccf4fe', '74f0b9', '32bc55', 'c72144',
    '56613b', 'c14683', 'c31c25', '5f6253', '11bf85', 'a61b26',
    '99fbc5', '188aaa', 'c2d7f1', 'b7d9d8', '856f96', '109c6b',
    '2de3f4', '9a777d', '151796', 'c033d8', '510037', '640c21',
    '31a191', '223ab0', 'b692ac', '2de3f4',
  ]
};

Map.setCenter(-37.62, 25.8, 2);

Map.addLayer(dataset, visualization, 'Change year index');
Open in Code Editor
This dataset contains annual change information of global impervious surface area from 1985 to 2018 at a 30m resolution. Change from pervious to impervious was determined using a combined approach of supervised classification and temporal consistency checking. Impervious pixels are defined as above 50% impervious. The year of the transition …
Tsinghua/FROM-GLC/GAIA/v10, built,population,tsinghua,urban
1985-01-01T00:00:00Z/2018-12-31T00:00:00Z
-90 -180 90 180
Google Earth Engine