In the subroutine RODCON in the lib_therm.f file, CH is defined as:
Max height of the snow before the Snowplow remove it
parameter ( CH = 4.0 )
However, I don't see where this is used in the subroutine. Can you
please tell us how and where CH is used? And, is this a value that we
could change?
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We have been making some assumptions about the time range that some of
the fields in METRo's output/input files cover, and were hoping you
could clarify these for us.
In the output roadcast file, the following fields exist:
sn is quantity of snow/ice on road (cm)
ra is quantity of rain on road (mm)
qp-sn is total snow precipitation (cm)
qp-ra is total rain precipitation (mm)
For sn and ra, are these instantaneous (or averages)?
For the qp fields are these hourly totals, totals within the 20 minute
forecast period, or are they accumulations for the model run since the
first roadcast hour through the X hour in the roadcast file?
Similarly, in the input forecast file, the following fields exist:
ra is rain precipitation quantity since the beginning of the forecast
(mm)
sn is snow precipitation quantity since the beginning of the
forecast (cm)
This implies that we should list the accumulated rain/snow
precipitation from the first forecast time through the X forecast
hour. Please verify if this is correct.
Also, in the input forecast file is:
ap surface pressure (mb)
Does this value refer to the sea level pressure or the station
pressure?
We just want to be sure we're interpreting the variables correctly.
Thanks for your help,
Julie
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