| thrins {palinsol} | R Documentation |
Integrated insolation for all days exceeding a threshold
Description
Integrated insolation over the part during which daily-mean insolation exceeds a threshold, expressed in W/m2
Usage
thrins(lat = 65 * pi/180, orbit, threshold = 400, ...)
Arguments
lat |
latitude |
orbit |
Output from a solution, such as |
threshold |
threshold insolation ,in W/m2 |
... |
other arguments to be passed to Insol |
Details
Algorithm is by M. Crucifix, but the idea of thresholded insolation is due to Huybers and Tziperman (2008), reference below.
Value
Time-integrated insolation in kJ/m2 . The quantity is calculated by brute-force integration with a 1-degree time-step in true solar longitude and this can be quite slow if long series are to be calculated.
Author(s)
Michel Crucifix, U. catholique de Louvain, Belgium.
References
P. Huybers and E. Tziperman (2008), Integrated summer insolation forcing and 40,000-year glacial cycles: The perspective from an ice-sheet/energy-balance model, Paleoceanography, 23.