Compound Topographic Index (CTI) from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database -- Asia
This dataset contains the Compound Topographic Index (CTI) grid for the Asian continent from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database. The CTI data were developed and distributed by processing units. There are 19 processing units for Asia. The distribution files have the...
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USGS Science Data Catalog
2017
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dataone:63743a70-8b5c-4110-95d0-02121599445a 2024-06-03T18:46:52+00:00 Compound Topographic Index (CTI) from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database -- Asia Kristine L. Verdin ENVELOPE(-180.0,179.99986,81.289444,-7.445) 2017-01-01T00:00:00Z https://search.dataone.org/view/63743a70-8b5c-4110-95d0-02121599445a unknown USGS Science Data Catalog dem stream hydrologic derivatives pfafstetter Pfafstetter streams digital elevation models elevation inlandWaters Asia Dataset 2017 dataone:urn:node:USGS_SDC 2024-06-03T18:10:07Z This dataset contains the Compound Topographic Index (CTI) grid for the Asian continent from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database. The CTI data were developed and distributed by processing units. There are 19 processing units for Asia. The distribution files have the number of the processing unit appended to the end of the zip file name (e.g. as_cti_3_2.zip contains the CTI data for unit 3-2).The HDMA database provides comprehensive and consistent global coverage of raster and vector topographically derived layers, including raster layers of digital elevation model (DEM) data, flow direction, flow accumulation, slope, and compound topographic index (CTI); and vector layers of streams and catchment boundaries. The coverage of the data is global (-180º, 180º, -90º, 90º) with the underlying DEM being a hybrid of three datasets: HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales), Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010) and the Shuttle Radar Topography Mission (SRTM). For most of the globe south of 60º North, the raster resolution of the data is 3-arc-seconds, corresponding to the resolution of the SRTM. For the areas North of 60º, the resolution is 7.5-arc-seconds (the smallest resolution of the GMTED2010 dataset) except for Greenland, where the resolution is 30-arc-seconds. The streams and catchments are attributed with Pfafstetter codes, based on a hierarchical numbering system, that carry important topological information. Dataset Greenland USGS Science Data Catalog (via DataONE) Greenland ENVELOPE(-180.0,179.99986,81.289444,-7.445) |
institution |
Open Polar |
collection |
USGS Science Data Catalog (via DataONE) |
op_collection_id |
dataone:urn:node:USGS_SDC |
language |
unknown |
topic |
dem stream hydrologic derivatives pfafstetter Pfafstetter streams digital elevation models elevation inlandWaters Asia |
spellingShingle |
dem stream hydrologic derivatives pfafstetter Pfafstetter streams digital elevation models elevation inlandWaters Asia Kristine L. Verdin Compound Topographic Index (CTI) from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database -- Asia |
topic_facet |
dem stream hydrologic derivatives pfafstetter Pfafstetter streams digital elevation models elevation inlandWaters Asia |
description |
This dataset contains the Compound Topographic Index (CTI) grid for the Asian continent from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database. The CTI data were developed and distributed by processing units. There are 19 processing units for Asia. The distribution files have the number of the processing unit appended to the end of the zip file name (e.g. as_cti_3_2.zip contains the CTI data for unit 3-2).The HDMA database provides comprehensive and consistent global coverage of raster and vector topographically derived layers, including raster layers of digital elevation model (DEM) data, flow direction, flow accumulation, slope, and compound topographic index (CTI); and vector layers of streams and catchment boundaries. The coverage of the data is global (-180º, 180º, -90º, 90º) with the underlying DEM being a hybrid of three datasets: HydroSHEDS (Hydrological data and maps based on SHuttle Elevation Derivatives at multiple Scales), Global Multi-resolution Terrain Elevation Data 2010 (GMTED2010) and the Shuttle Radar Topography Mission (SRTM). For most of the globe south of 60º North, the raster resolution of the data is 3-arc-seconds, corresponding to the resolution of the SRTM. For the areas North of 60º, the resolution is 7.5-arc-seconds (the smallest resolution of the GMTED2010 dataset) except for Greenland, where the resolution is 30-arc-seconds. The streams and catchments are attributed with Pfafstetter codes, based on a hierarchical numbering system, that carry important topological information. |
format |
Dataset |
author |
Kristine L. Verdin |
author_facet |
Kristine L. Verdin |
author_sort |
Kristine L. Verdin |
title |
Compound Topographic Index (CTI) from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database -- Asia |
title_short |
Compound Topographic Index (CTI) from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database -- Asia |
title_full |
Compound Topographic Index (CTI) from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database -- Asia |
title_fullStr |
Compound Topographic Index (CTI) from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database -- Asia |
title_full_unstemmed |
Compound Topographic Index (CTI) from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database -- Asia |
title_sort |
compound topographic index (cti) from the hydrologic derivatives for modeling and analysis (hdma) database -- asia |
publisher |
USGS Science Data Catalog |
publishDate |
2017 |
url |
https://search.dataone.org/view/63743a70-8b5c-4110-95d0-02121599445a |
op_coverage |
ENVELOPE(-180.0,179.99986,81.289444,-7.445) |
long_lat |
ENVELOPE(-180.0,179.99986,81.289444,-7.445) |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland |
genre_facet |
Greenland |
_version_ |
1800872332985630720 |