This script package includes two geoprocessing software: TapesG-ArcGIS and SRAD-ArcGIS. They compute 14 terrain attributes and 14 solar attributes, respectively. The following sections describe these two software in more detail:
1. TapesG-ArcGIS is a latest version of TAPES_GRD (Terrain Analysis Programs for the Environmental Sciences - Grid Version) which was orginally written by late Ian Moore of The Australian National University and is now further developed by Hong Chen and John Wilson of GIS Research Laboratory at University of Southern California. This version of TapesG runs inside ArcGIS 9.x geoprocessing framework. It computes topographic attributes of slope, aspect, profile curvature, plan curvature, grad curvature, flow path length, catchment drainage areas, connectivities, etc from a grid-based digital elevation model (DEM). It can be run as a user-friendly geoprocessing function tool, a scripting tool, or through a command line window.
2. SRAD-ArcGIS is the latest version of SRAD (Solar Radiation) was also written by late Ian Moore and is now developed by Hong Chen and John Wilson of GIS Research Laboratory at University of Southern California. It is a grid-based solar radiation modelling program which takes into account slope, aspect, topographic shading and monthly variations in cloudiness, atmospheric transmissivity and several vegetation properties. It computes a radiation balance using incoming short wave radiation and incoming and outgoing long wave radiation, and also extrapolates minimum, maximum and average temperatures across the surface based on temperature records from a nearby weather station.
For more information, please feel free to contact Hong Chen (hongchen@usc.edu) of the GIS Research Laboratory at University of Southern California. |
