AI-generated Key Takeaways
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This dataset collection provides various landform, physiographic, and topographic indices derived from ALOS, SRTM, and NED DEMs.
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Global and US-specific datasets are included, offering insights into topographic diversity, heat-insolation load, and landform classifications.
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The datasets are useful for ecological and environmental studies, including habitat modeling and species distribution analysis.
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The Conservation Science Partners (CSP) Ecologically Relevant Geomorphology (ERGo) project developed these datasets.
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They are based on 30m resolution for ALOS and SRTM, and 10m resolution for NED DEMs.
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Global ALOS CHILI (Continuous Heat-Insolation Load Index)
CHILI is a surrogate for effects of insolation and topographic shading on evapotranspiration represented by calculating insolation at early afternoon, sun altitude equivalent to equinox. It is based on the 30m "AVE" band of JAXA's ALOS DEM (available in EE as JAXA/ALOS/AW3D30_V1_1). The Conservation Science … aspect csp elevation elevation-topography ergo geophysical -
Global ALOS Landforms
The ALOS Landform dataset provides landform classes created by combining the Continuous Heat-Insolation Load Index (ALOS CHILI) and the multi-scale Topographic Position Index (ALOS mTPI) datasets. It is based on the 30m "AVE" band of JAXA's ALOS DEM (available in EE as JAXA/ALOS/AW3D30_V1_1). The Conservation … aspect csp elevation elevation-topography ergo geophysical -
Global ALOS Topographic Diversity
Topographic diversity (D) is a surrogate variable that represents the variety of temperature and moisture conditions available to species as local habitats. It expresses the logic that a higher variety of topo-climate niches should support higher diversity (especially plant) and support species persistence given climatic … aspect csp elevation elevation-topography ergo geophysical -
Global ALOS 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 … aspect csp elevation elevation-topography ergo geophysical -
Global SRTM CHILI (Continuous Heat-Insolation Load Index)
CHILI is a surrogate for effects of insolation and topographic shading on evapotranspiration represented by calculating insolation at early afternoon, sun altitude equivalent to equinox. It is based on the 30m SRTM DEM (available in EE as USGS/SRTMGL1_003). The Conservation Science Partners (CSP) Ecologically Relevant … aspect csp elevation elevation-topography ergo geophysical -
Global SRTM Landforms
The SRTM Landform dataset provides landform classes created by combining the Continuous Heat-Insolation Load Index (SRTM CHILI) and the multi-scale Topographic Position Index (SRTM mTPI) datasets. It is based on the 30m SRTM DEM (available in EE as USGS/SRTMGL1_003). The Conservation Science Partners (CSP) Ecologically … aspect csp elevation elevation-topography ergo geophysical -
Global SRTM Topographic Diversity
Topographic diversity (D) is a surrogate variable that represents the variety of temperature and moisture conditions available to species as local habitats. It expresses the logic that a higher variety of topo-climate niches should support higher diversity (especially plant) and support species persistence given climatic … aspect csp elevation elevation-topography ergo geophysical -
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 … aspect csp elevation elevation-topography ergo geophysical -
US Lithology
The Lithology dataset provides classes of the general types of parent material of soil on the surface. It is not derived from any DEM. The Conservation Science Partners (CSP) Ecologically Relevant Geomorphology (ERGo) Datasets, Landforms and Physiography contain detailed, multi-scale data on landforms and physiographic … aspect csp elevation elevation-topography ergo geophysical -
US NED CHILI (Continuous Heat-Insolation Load Index)
CHILI is a surrogate for effects of insolation and topographic shading on evapotranspiration represented by calculating insolation at early afternoon, sun altitude equivalent to equinox. It is based on the USGS's 10m NED DEM (available in EE as USGS/NED). The Conservation Science Partners (CSP) Ecologically … aspect csp elevation elevation-topography ergo geophysical -
US NED Landforms
The ALOS Landform dataset provides landform classes created by combining the Continuous Heat-Insolation Load Index (CHILI) and the multi-scale Topographic Position Index (mTPI) datasets. It is based on the USGS's 10m NED DEM (available in EE as USGS/NED). The Conservation Science Partners (CSP) Ecologically Relevant … aspect csp elevation elevation-topography ergo geophysical -
US NED Physiographic Diversity
The Physiographic Diversity dataset provides an index of the diversity of physiographic types. It was calculated using the Shannon diversity index at multiple scales (km): 115.8, 89.9, 35.5, 13.1, 5.6, 2.8, and 1.2. It is based on the USGS's 10m NED DEM (available in EE … aspect csp elevation elevation-topography ergo geophysical -
US NED Topographic Diversity
Topographic diversity (D) is a surrogate variable that represents the variety of temperature and moisture conditions available to species as local habitats. It expresses the logic that a higher variety of topo-climate niches should support higher diversity (especially plant) and support species persistence given climatic … aspect csp elevation elevation-topography ergo geophysical -
US NED 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 USGS's … aspect csp elevation elevation-topography ergo geophysical -
US Physiography
The Physiography dataset represents the spatial intersection of landforms (available in EE as ERGo/1_0/US/landforms) and lithology (available in EE as ERGo/1_0/US/lithology) data layers. It provides 247 unique combinations out of a possible 270. The values for each type are formed by concatenating the landform and … aspect csp elevation elevation-topography ergo geophysical