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TBD - pull more out of both PHOENIX_data_preparation_20080413.pdf and Phoenix User Manual
Overview
Input
When running a simulation Phoenix obtains input data from 3 sources.
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Input data to the model must be prepared in a GIS such as ESRI's ArcGIS or MapInfo. This base data is then converted into a format read by PHOENIX which is an ASCII grid broken into data "tiles", 30 x 30 cells wide. This tiling can be easily done in ArcGIS using a specially developed "Toolbox". The base input data is usually at 20 or 30m resolution, but when it is read into PHOENIX it is averaged into larger cells to speed computations. Typically the grid cell size for PHOENIX computation is 100 or 200m, but could range from 50 to 500m depending on the nature of the terrain and the level of detail required.
Output
In addition to the source data for running the PHOENIX model, it is also necessary to have a visual reference layer such as a satellite image or topographic map on which to set up the simulation area and to overlay the results of the simulation. More on this below.
This document describes the data files that are obtained from the Gridded_Weather and Data directories.
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Other files in the Data directory
In addition to the source data for running the PHOENIX model, it is also necessary to have a visual reference layer such as a satellite image or topographic map on which to set up the simulation area and to overlay the results of the simulation. More on this below.
This geographic reference layer(s) is encapsulated in an ArcGIS project. Apart from the basic visual reference layer, other GIS information may also be included in this project for display in PHOENIX. However, within PHOENIX, these layers can only be turned on or off for display, no other manipulation of these layers is possible in the PHOENIX environment.
Below are some examples of geographic reference layers. The top image shows a satellite image overlaid with major rivers, roads and town names. The bottom image shows a section of a 1:250,000 topographic map.
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Gridded Weather
The Gridded_Weather directory is expected to contain gridded forecast weather data in the form of NetCDF files normally obtained from the Bureau of Meteorology. This data is produced twice a day by the BOM. A downloading process has to be put in place to get this data, but it is restricted to registered users. PHOENIX will also run on a single stream of weather data
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