Calculate DHW — calculate

Function to calculate Degree Heating Weeks (DHW).

The function computes the Degree Heating Weeks (DHW) metric, which accumulates heat stress over a specified rolling window (defaulting to 84 days). If anomaly >= 1, only daily hotspot values greater than or equal to that threshold are included. If anomaly < 1, all non-NA hotspot values are included without thresholding.

Usage

calculate_dhw(hs, anomaly = 1, window = 84)

Arguments

hs: SpatRaster of hotspots.
anomaly: numeric threshold for hotspots (default = 1). If <1, no thresholding is applied.
window: number of days to sum hotspots, default = 84 (12 weeks).

Value

SpatRaster of Degree Heating Weeks.