calc_degreedays

internal

Methods to calculate and present 'PHENTHAUproc', an early warning and decision support system for hazard assessment and control of oak processionary moth (OPM) using local and spatial temperature data. It was created by Halbig et al. 2024 (<doi:10.1016/j.foreco.2023.121525>) at FVA (<https://www.fva-bw.de/en/homepage/>) Forest Research Institute Baden-Wuerttemberg, Germany and at BOKU - University of Natural Ressources and Life Sciences, Vienna, Austria.

Lorenz Bachfischer

PHENTHAUproc

Phenology Modelling of Thaumetopoea Processionea

Department of Forest Protection, FVA 

calc_degreedays function

<dl><dt>x</dt>
<dd>SpatRaster list (tmean, tmax, tmin) - numeric - with time attribute</dd>
<dt>ts_start</dt>
<dd>start of timeseries - Date</dd>
<dt>ts_end</dt>
<dd>end of timeseries - Date</dd>
<dt>ldt</dt>
<dd>lower development threshold - numeric</dd>
<dt>method</dt>
<dd>name of degreedays/temperature sum method - character - either
"baskerville" or "tsum"</dd></dl>

Arguments

Calculate degree days — calc_degreedays

<dl>

<dt>x</dt>
<dd>SpatRaster list (tmean, tmax, tmin) - numeric - with time attribute</dd>


<dt>ts_start</dt>
<dd>start of timeseries - Date</dd>


<dt>ts_end</dt>
<dd>end of timeseries - Date</dd>


<dt>ldt</dt>
<dd>lower development threshold - numeric</dd>


<dt>method</dt>
<dd>name of degreedays/temperature sum method - character - either
"baskerville" or "tsum"</dd>

</dl>

calc_degreedays: Calculate degree days

Description

Usage

Value

Arguments

See Also