High-resolution global topographic index values

• Published by: Environmental Information Data Centre
• Last updated: 03 May 2023
• Topic: Not added
• Licence: Other Licence ; View licence information

Summary

The topographic index is a hydrological quantity describing the propensity of the soil at landscape points to become saturated with water as a result of topographic position (i.e. not accounting for other factors such as climate that also affect soil moisture but are accounted for separately). Modern land surface models require a characterisation of the land surface hydrological regime and this parameter allows the use of the TOPMODEL hydrological model to achieve this .This Geographic Information System layer is intended for use as topographic ancillary files for the TOPMODEL routing model option within the Joint UK Land Environment Simulator (JULES) land surface model. The topographic index variable here is directly comparable to the compound topographic index available from United States Geological Survey's Hydro1K at 30 sec resolution. PLEASE NOTE: This dataset is a correction to a previous version which was found to contain errors (doi:10/t7d). In the previous version all pixels north of 4.57 degrees south were shifted consistently 9.3 km to the west. This version is correctly aligned at all points. Full details about this dataset can be found at https://doi.org/10.5285/6b0c4358-2bf3-4924-aa8f-793d468b92be

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Link to the data	Format	File added	Data preview
Supporting information	ZIP	03 May 2023	Not available
Download the data	ZIP	03 May 2023	Not available

Additional information

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• Added to data.gov.uk: 2023-04-28T08:06:30
• Access contraints: This product, High-resolution global topographic index values, has been created with use of data from the HydroSHEDS database which is © World Wildlife Fund, Inc. (2006-2013) and has been used herein under license. WWF has not evaluated the data as altered and incorporated within, High-resolution global topographic index values, and therefore gives no warranty regarding its accuracy, completeness, currency or suitability for any particular purpose. Portions of the HydroSHEDS database incorporate data which are the intellectual property rights of © USGS (2006-2008), NASA (2000-2005), ESRI (1992-1998), CIAT (2004-2006), UNEP-WCMC (1993), WWF (2004), Commonwealth of Australia (2007), and Her Royal Majesty and the British Crown and are used under license. The HydroSHEDS database and more information are available at http://www.hydrosheds.org
• Harvest GUID: 6b0c4358-2bf3-4924-aa8f-793d468b92be
• Extent: Latitude: 86.1° to -56.35°
• Extent: Longitude: -180° to 180°
• Dataset reference date: 2015-03-03 (publication)
• Frequency of update: notPlanned
• Responsible party: University of Oxford (author); McGill University (author); Hadley Centre for Climate Prediction and Research (author); NERC Environmental Information Data Centre (publisher); NERC EDS Environmental Information Data Centre (custodian); UK Centre for Ecology & Hydrology (pointOfContact)
• ISO 19139 resource type: dataset
• Metadata language: eng
• Source Metadata: XML
• Source Metadata: HTML

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