fdns: Frost days where no snow index per time period

In rcdo: Wrapper of 'CDO' Operators

Frost days where no snow index per time period

Description

Let infile1 be a time series of the daily minimum temperature TN and infile2 be a corresponding series of daily surface snow amounts. Then the number of days where TN < 0 °C and the surface snow amount is less than 1 cm is counted. The temperature TN have to be given in units of Kelvin. The date information of a timestep in outfile is the date of the last contributing timestep in infile.

Usage

cdo_fdns(ifile1, ifile2, ofile = NULL)

Arguments

ifile1, ifile2	Strings with the path to the input files.
ofile	String with the path to the output file.

Value

Operators that output one or more files return a character vector to the output files.

Operators that output an indefinite number of files return a string with the basename of the files.

Operatos that don't return filenames return a character vector with the string output.

rcdo documentation built on June 8, 2025, 12:36 p.m.