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.TH timeres
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.TH timeres
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.SH NAME
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.SH NAME
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.B timeres - change the time resolution of a trajectory
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.B timeres - change the time resolution of a trajectory
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.SH SYNOPSIS
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.SH SYNOPSIS
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.B timeres
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.B timeres
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.I inpfile
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.I inpfile
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.I outfile
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.I outfile
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.I -[h|min] value
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.I -[h|min] value
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.I [-cubic|-linear]
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.I [-cubic|-linear]
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.SH DESCRIPTION
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.SH DESCRIPTION
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Change the time resolution of an input trajectory file "inpfile" through interpolation and write a new trajectory file "outfile". The new time resolution "value" is given either in hours "-h" or in minutes "-min". The interpolation is performed on the trajectory file either in linear mode ("-linear") or in cubic spline mode ("-cubic"). The default is "-cubic".
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Change the time resolution of an input trajectory file "inpfile" through interpolation and write a new trajectory file "outfile". The new time resolution "value" is given either in hours "-h" or in minutes "-min". The interpolation is performed on the trajectory file either in linear mode ("-linear") or in cubic spline mode ("-cubic"). The default is "-cubic".
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.SH PARAMETERS
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.SH PARAMETERS
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.TP 15
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.TP 15
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.I inpfile
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.I inpfile
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input trajectory file
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input trajectory file
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.TP 15
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.TP 15
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.I outfile
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.I outfile
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output trajectory file (can be the same as inpfile).
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output trajectory file (can be the same as inpfile).
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.TP 15
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.TP 15
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.I -h value
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.I -h value
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new time resolution in hours (e.g. "-h 1").
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new time resolution in hours (e.g. "-h 1").
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.TP 15
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.TP 15
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.I -min value
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.I -min value
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new time resolution in minutes (e.g. "-min 15").
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new time resolution in minutes (e.g. "-min 15").
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.TP 15
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.TP 15
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.I -linear
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.I -linear
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linear interpolation between two trajectory times; note that this mode conserves the sign between two trajectory times - possibly of important for specific humidity, relative humidity,...
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linear interpolation between two trajectory times; note that this mode conserves the sign between two trajectory times - possibly of important for specific humidity, relative humidity,...
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.TP 15
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.TP 15
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.I -linear
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.I -linear
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subic spline interpolation between two trajectory times; note that this mode conserves can change the sign between two trajectory times!
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subic spline interpolation between two trajectory times; note that this mode conserves can change the sign between two trajectory times!
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.SH EXAMPLES
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.SH EXAMPLES
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.TP 5
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.TP 5
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.B [1] timeres trafile trafile -min 15 -linear
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.B [1] timeres trafile trafile -min 15 -linear
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changes the time resolution to 15 minutes, using linear interpolation, and overwrites the old trajectory file.
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changes the time resolution to 15 minutes, using linear interpolation, and overwrites the old trajectory file.
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.SH AUTHOR
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.SH AUTHOR
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Written by Michael Sprenger and Heini Wernli (January 2011
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Written by Michael Sprenger and Heini Wernli (January 2011
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