thrins: Integrated insolation for all days exceeding a threshold

Description Usage Arguments Details Value Author(s) References

View source: R/Insol.R

Description

Integrated insolation over the part during which daily-mean insolation exceeds a threshold, expressed in W/m2

Usage

1
 thrins  (lat=65*pi/180,orbit,threshold=400,...)

Arguments

lat

latitude

orbit

Output from a solution, such as ber78, ber90 or la04

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.


mcrucifix/palinsol documentation built on Aug. 15, 2017, 1:45 a.m.