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Table of Contents - The Atmospheric Studies Group at TRC

Table of Contents - The Atmospheric Studies Group at TRC

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Section 3: READ62 Upper Air Preprocessor<br />

<strong>The</strong> output d<strong>at</strong>a file (UP.DAT) produced by READ62 is a form<strong>at</strong>ted file containing the pressure,<br />

elev<strong>at</strong>ion, temper<strong>at</strong>ure, wind speed, and wind direction <strong>at</strong> each sounding level. <strong>The</strong> first level <strong>of</strong> each<br />

sounding is assumed to represent surface-level observ<strong>at</strong>ions. If the surface level is missing from the<br />

sounding, it must be filled in before running CALMET.<br />

READ62 allows the user to select either a slash (/) delimiter form<strong>at</strong> (the original form<strong>at</strong>), or a comma<br />

delimiter form<strong>at</strong> for the UP.DAT file. <strong>The</strong> comma-delimited form <strong>of</strong> the UP.DAT file facilit<strong>at</strong>es the use<br />

by CALMET <strong>of</strong> non-NCDC d<strong>at</strong>a sources, such as SODAR d<strong>at</strong>a. In CALMET, a slash-delimited file is<br />

read using FORTRAN form<strong>at</strong> st<strong>at</strong>ements, while the comma-delimited file is read using Fortran free read<br />

st<strong>at</strong>ements. READ62 can be by-passed, and a comma-delimited UP.DAT file can be easily prepared from<br />

non-NCDC d<strong>at</strong>a by following the form<strong>at</strong> discussed in Section 8.3. Sample UP.DAT files in both form<strong>at</strong>s<br />

are shown in <strong>Table</strong> 3-5.<br />

3-13

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