Global SRTM mTPI (Multi-Scale Topographic Position Index)

Dataset Availability

2006-01-24T00:00:00Z–2011-05-13T00:00:00Z

Dataset Provider

Conservation Science Partners

Earth Engine Snippet

ee.Image("CSP/ERGo/1_0/Global/SRTM_mTPI")

Tags

aspect csp elevation ergo geophysical global landforms slope topography

Description

The mTPI distinguishes ridge from valley forms. It is calculated using elevation data for each location subtracted by the mean elevation within a neighborhood. mTPI uses moving windows of radius (km): 115.8, 89.9, 35.5, 13.1, 5.6, 2.8, and 1.2. It is based on the 30m SRTM DEM (available in EE as USGS/SRTMGL1_003).

The Conservation Science Partners (CSP) Ecologically Relevant Geomorphology (ERGo) Datasets, Landforms and Physiography contain detailed, multi-scale data on landforms and physiographic (aka land facet) patterns. Although there are many potential uses of these data, the original purpose for these data was to develop an ecologically relevant classification and map of landforms and physiographic classes that are suitable for climate adaptation planning. Because there is large uncertainty associated with future climate conditions and even more uncertainty around ecological responses, providing information about what is unlikely to change offers a strong foundation for managers to build robust climate adaptation plans. The quantification of these features of the landscape is sensitive to the resolution, so we provide the highest resolution possible given the extent and characteristics of a given index.

Bands

Resolution
270 meters

Bands

Name	Units	Min	Max	Description
elevation	m	-8129*	7905*	SRTM-derived mTPI ranging from negative (valleys) to positive (ridges) values

* estimated min or max value

Terms of Use

Terms of Use

CC-BY-NC-SA-4.0

Citations

Citations:

• Theobald, D. M., Harrison-Atlas, D., Monahan, W. B., & Albano, C. M. (2015). Ecologically-relevant maps of landforms and physiographic diversity for climate adaptation planning. PloS one, 10(12), e0143619

Explore with Earth Engine

Important: Earth Engine is a platform for petabyte-scale scientific analysis and visualization of geospatial datasets, both for public benefit and for business and government users. Earth Engine is free to use for research, education, and nonprofit use. To get started, please register for Earth Engine access.

Code Editor (JavaScript)

var dataset = ee.Image('CSP/ERGo/1_0/Global/SRTM_mTPI');
var srtmMtpi = dataset.select('elevation');
var srtmMtpiVis = {
  min: -200.0,
  max: 200.0,
  palette: ['0b1eff', '4be450', 'fffca4', 'ffa011', 'ff0000'],
};
Map.setCenter(-105.8636, 40.3439, 11);
Map.addLayer(srtmMtpi, srtmMtpiVis, 'SRTM mTPI');

Open in Code Editor

Global SRTM mTPI (Multi-Scale Topographic Position Index)

The mTPI distinguishes ridge from valley forms. It is calculated using elevation data for each location subtracted by the mean elevation within a neighborhood. mTPI uses moving windows of radius (km): 115.8, 89.9, 35.5, 13.1, 5.6, 2.8, and 1.2. It is based on the 30m SRTM DEM (available in EE …

CSP/ERGo/1_0/Global/SRTM_mTPI, aspect,csp,elevation,ergo,geophysical,global,landforms,slope,topography

2006-01-24T00:00:00Z/2011-05-13T00:00:00Z

Google Earth Engine

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