Generate spatial data for emission, meteorology, and air quality modeling
The Spatial Allocator (SA) is a set of tools that helps users manipulate and generate data files related to emissions and air quality modeling. The tools perform functions similar to Geographic Information Systems (GIS), but are provided to the modeling community free of charge. In addition, the tools are designed to support some of the unique aspects of the file formats used for Community Multiscale Air Quality (CMAQ), Sparse Matrix Operator Kernel Emissions (SMOKE), and Weather Research and Forecasting (WRF) modeling.
The SA is licensed as open-source Linux software that was developed with funding from the U.S. EPA. The SA uses GIS industry standard ESRI shapefiles, image files supported by GDAL, netCDF files and plain text data files as input and output data.
The Vector Tools allow you to develop individual spatial surrogates, to change the map projection of Shapefiles, to remap spatial data from one spatial domain to another (e.g. counties to grids, fine grids to coarse grids), and to perform other types of spatial manipulation without using a GIS.
The Raster Tools allow you to process land use data, satellite data, and agricultural fertilizer application data for meteorological and air quality modeling, particularly within the WRF/CMAQ modeling systems.
The Surrogate Tools allow you to manage the creation of large sets of spatial surrogates and also supports merging and gapfilling of surrogates.
Updates in this Release:
- Includes the new Postgres Surrogate Tool, for generating surrogates using a PostgreSQL database with the PostGIS extension. Quick Start Guide