albedo atmosphere_transmissivity CalovGreveIntegrand DEBMSimplePointwise distance_factor_paleo distance_factor_present_day eccentricity hour_angle insolation insolation_diagnostic m_albedo_max m_albedo_min m_albedo_ocean m_albedo_slope m_constant_eccentricity m_constant_obliquity m_constant_perihelion_longitude m_eccentricity m_ice_density m_L m_melt_c1 m_melt_c2 m_melt_threshold_temp m_obliquity m_paleo m_perihelion_longitude m_phi m_positive_threshold_temperature m_refreeze_fraction m_refreeze_ice_melt m_solar_constant m_time m_transmissivity_intercept m_transmissivity_slope m_water_density melt obliquity orbital_parameters perihelion_longitude solar_declination_paleo solar_declination_present_day solar_longitude step

hour_angle() double pism::surface::DEBMSimplePointwise::hour_angle ( double  phi, double  latitude, double  declination  ) static The hour angle (radians) at which the sun reaches the solar altitude angle phi Implements equation 11 in Krebs-Kanzow et al solved for h_phi. Equation 2 in Zeitz et al should be equivalent but misses "acos(...)". The return value is in the range [0, pi]. Parameters [in] phi angle (radians) [in] latitude latitude (radians) [in] declination solar declination angle (radians) Definition at line 85 of file DEBMSimplePointwise.cc. References pism::clip(), and phi. Referenced by insolation(), insolation_diagnostic(), and melt().