Chapter 9
Model Inputs
9.0 Introduction
FASST requires four types of inputs: meteorological, soil properties, initial conditions,
and site information. Actual structure of the input files is not discussed here. This
information is found in the accompanying report, FASST User's Manual (Frankenstein
2004). Wherever possible, SEDRIS (Synthetic Environment Data Representation and
Interchange Specification) nomenclature is used to describe the data in an attempt to
standardize the process. More information concerning SEDRIS is found at
http://www.sedris.org.
9.1 Meteorological Data
For FASST to operate with the most accuracy, the following meteorological data are
required.
Year
Day of the Year
Hour of the Day
Minute of the Hour
Air Pressure (mbar)
Air Temperature (K)
Relative Humidity (%)
Wind Speed (m/s)
Wind Direction (degrees from N, + = clockwise)
Precipitation Rate (mm/hr)
Precipitation Type (SEDRIS enumeration)
Low Cloud Amount (tenths)
Low Cloud Height (km)
Low Cloud Type (SEDRIS enumeration)
Middle Cloud Amount (tenths)
Middle Cloud Height (km)
Middle Cloud Type (SEDRIS enumeration)
High Cloud Amount (tenths)
High Cloud Height (km)
High Cloud Type (SEDRIS enumeration)
Direct Solar Radiation (W/m2)
Diffuse Solar Radiation (W/m2)
Reflected Solar Radiation (W/m2)
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