relErainterimAirhumidity: Computes the relative air humidity for raster based time...
In henningte/herdersWDA: Functions for Raster Based Weather Time Series Analysis

Description Usage Arguments Value Examples

relErainterimAirhumidity calculates the relative air humidity [ (RasterBrick or RasterStack object, see: Raster-class) derived from netcdf raster files as downloaded from ERA interim as suggested by https://software.ecmwf.int/wiki/display/CKB/Do+ERA+datasets+contain+parameters+for+near-surface+humidity, based on the dew point temperature and the air temperature. This is done using thw Teten's formula for saturation over water as suggested at https://software.ecmwf.int/wiki/display/CKB/Do+ERA+datasets+contain+parameters+for+near-surface+humidity and in https://www.ecmwf.int/sites/default/files/elibrary/2016/16648-part-iv-physical-processes.pdf.

1 2	relErainterimAirhumidity(dt, t, interval = NULL, cores = 10, timedate, clcall = NULL)

`dt`	A `RasterBrick` or `RasterStack` object with values for the dew point temperature. `dt` is supposed to have the same temporal extent and resolution as `t`.
`t`	A `RasterBrick` or `RasterStack` object with values for the air temperature. `t` is supposed to have the same temporal extent and resolution as `dt`.
`cores`	The number of cores to be used in parallel computing.
`timedate`	A `POSIXct` vector containing the time information for each band/layer of `variable`.
`clcall`	A function passed to `clusterCall`.

A list with the first element representing the relative air humidity [ time series with as a RasterBrick with the same temporal resultution as dt and t and the second element a POSIXct vector containing the time information.