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michaesp |
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.TH getmima
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.SH NAME
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.B getmima - get the mimimum and maximum of a field on a netCDF file, interpolated either to a pressure or an isentropic surface.
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.SH SYNOPSIS
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.B getmima
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.I filename
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.I field
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.I [ Pval | Tval ]
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.SH DESCRIPTION
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Interpolate the field "field" of a netCDF file "filename" either onto a pressure surface "Pval" or onto an isentropic surface "Tval", where the level is given in hPa or K, respectively. The output is in the format: min.max, lonmin, latmin, pmin, tmin, lonmax, latmax, pmax, tmax.
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.SH PARAMETERS
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.TP 15
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.B filename
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input netCDF file (e.g. P20110102_00)
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.TP 15
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.B field
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name of the field on the netCDF file (as obtained from
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.B getvars).
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.TP 15
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.B Pval
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specification of a pressure surface at height "val" in hPa (e.g. "P500" for 500 hPa).
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.B Tval
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specification of an isentropic surface at height "val" in K (e.g. "T320" for 320 K).
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.SH EXAMPLES
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.TP 5
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.B [1] getmima P20110201_00 T P500
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gives the mimimum and maximum temperature on the 500 hPa surface - the output is: -49.155 -2.606 80.00 -88.00 500 0.0 -143.00 9.00 500 0.0, i.e. the minium temperture is -49.155 deg C at (lon,lat,p,time)=(80, -88, 500, 0) and correspondingly for the maximum temperature.
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.TP 5
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.B [2] getmima S20110201_00 PV P320
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gives the minium and maximum potential vorticity (PV) on the 320-K isentropic surface.
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.SH AUTHOR
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Written by Michael Sprenger and Heini Wernli (January 2011)
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