MODULE phycst !!====================================================================== !! *** MODULE phycst *** !! Definition of of both ocean and ice parameters used in the code !!===================================================================== !! History : OPA ! 1990-10 (C. Levy - G. Madec) Original code !! 8.1 ! 1991-11 (G. Madec, M. Imbard) cosmetic changes !! NEMO 1.0 ! 2002-08 (G. Madec, C. Ethe) F90, add ice constants !! - ! 2006-08 (G. Madec) style !! 3.2 ! 2006-08 (S. Masson, G. Madec) suppress useless variables + style !! 3.4 ! 2011-11 (C. Harris) minor changes for CICE constants !!---------------------------------------------------------------------- !!---------------------------------------------------------------------- !! phy_cst : define and print physical constant and domain parameters !!---------------------------------------------------------------------- USE par_oce ! ocean parameters USE in_out_manager ! I/O manager IMPLICIT NONE PRIVATE PUBLIC phy_cst ! routine called by inipar.F90 REAL(wp), PUBLIC :: rpi = 3.141592653589793_wp !: pi REAL(wp), PUBLIC :: rad = 3.141592653589793_wp / 180._wp !: conversion from degre into radian REAL(wp), PUBLIC :: rsmall = 0.5 * EPSILON( 1.e0 ) !: smallest real computer value REAL(wp), PUBLIC :: rday = 24.*60.*60. !: day [s] REAL(wp), PUBLIC :: rsiyea !: sideral year [s] REAL(wp), PUBLIC :: rsiday !: sideral day [s] REAL(wp), PUBLIC :: raamo = 12._wp !: number of months in one year REAL(wp), PUBLIC :: rjjhh = 24._wp !: number of hours in one day REAL(wp), PUBLIC :: rhhmm = 60._wp !: number of minutes in one hour REAL(wp), PUBLIC :: rmmss = 60._wp !: number of seconds in one minute REAL(wp), PUBLIC :: omega !: earth rotation parameter [s-1] REAL(wp), PUBLIC :: ra = 6371229._wp !: earth radius [m] REAL(wp), PUBLIC :: grav = 9.80665_wp !: gravity [m/s2] REAL(wp), PUBLIC :: rtt = 273.16_wp !: triple point of temperature [Kelvin] REAL(wp), PUBLIC :: rt0 = 273.15_wp !: freezing point of fresh water [Kelvin] REAL(wp), PUBLIC :: rt0_snow = 273.15_wp !: melting point of snow [Kelvin] #if defined key_lim3 REAL(wp), PUBLIC :: rt0_ice = 273.15_wp !: melting point of ice [Kelvin] #else REAL(wp), PUBLIC :: rt0_ice = 273.05_wp !: melting point of ice [Kelvin] #endif REAL(wp), PUBLIC :: rau0 !: volumic mass of reference [kg/m3] REAL(wp), PUBLIC :: r1_rau0 !: = 1. / rau0 [m3/kg] REAL(wp), PUBLIC :: rcp !: ocean specific heat [J/Kelvin] REAL(wp), PUBLIC :: r1_rcp !: = 1. / rcp [Kelvin/J] REAL(wp), PUBLIC :: rau0_rcp !: = rau0 * rcp REAL(wp), PUBLIC :: r1_rau0_rcp !: = 1. / ( rau0 * rcp ) REAL(wp), PUBLIC :: rhosn = 330._wp !: volumic mass of snow [kg/m3] REAL(wp), PUBLIC :: rhofw = 1000._wp !: volumic mass of freshwater in melt ponds [kg/m3] REAL(wp), PUBLIC :: emic = 0.97_wp !: emissivity of snow or ice REAL(wp), PUBLIC :: sice = 6.0_wp !: salinity of ice [psu] REAL(wp), PUBLIC :: soce = 34.7_wp !: salinity of sea [psu] REAL(wp), PUBLIC :: cevap = 2.5e+6_wp !: latent heat of evaporation (water) REAL(wp), PUBLIC :: srgamma = 0.9_wp !: correction factor for solar radiation (Oberhuber, 1974) REAL(wp), PUBLIC :: vkarmn = 0.4_wp !: von Karman constant REAL(wp), PUBLIC :: stefan = 5.67e-8_wp !: Stefan-Boltzmann constant #if defined key_lim3 || defined key_cice REAL(wp), PUBLIC :: rhoic = 917._wp !: volumic mass of sea ice [kg/m3] REAL(wp), PUBLIC :: rcdic = 2.034396_wp !: thermal conductivity of fresh ice [W/m/K] REAL(wp), PUBLIC :: cpic = 2067.0_wp !: specific heat of fresh ice [J/kg/K] REAL(wp), PUBLIC :: lsub = 2.834e+6_wp !: pure ice latent heat of sublimation [J/kg] REAL(wp), PUBLIC :: lfus = 0.334e+6_wp !: latent heat of fusion of fresh ice [J/kg] REAL(wp), PUBLIC :: tmut = 0.054_wp !: decrease of seawater meltpoint with salinity REAL(wp), PUBLIC :: xlsn !: = lfus*rhosn (volumetric latent heat fusion of snow) [J/m3] #else REAL(wp), PUBLIC :: rhoic = 900._wp !: volumic mass of sea ice [kg/m3] REAL(wp), PUBLIC :: rcdic = 2.034396_wp !: conductivity of the ice [W/m/K] REAL(wp), PUBLIC :: rcpic = 1.8837e+6_wp !: volumetric specific heat for ice [J/m3/K] REAL(wp), PUBLIC :: cpic !: = rcpic / rhoic (specific heat for ice) [J/Kg/K] REAL(wp), PUBLIC :: rcdsn = 0.22_wp !: conductivity of the snow [W/m/K] REAL(wp), PUBLIC :: rcpsn = 6.9069e+5_wp !: volumetric specific heat for snow [J/m3/K] REAL(wp), PUBLIC :: xlsn = 110.121e+6_wp !: volumetric latent heat fusion of snow [J/m3] REAL(wp), PUBLIC :: lfus !: = xlsn / rhosn (latent heat of fusion of fresh ice) [J/Kg] REAL(wp), PUBLIC :: xlic = 300.33e+6_wp !: volumetric latent heat fusion of ice [J/m3] REAL(wp), PUBLIC :: xsn = 2.8e+6_wp !: volumetric latent heat of sublimation of snow [J/m3] #endif #if defined key_cice REAL(wp), PUBLIC :: rcdsn = 0.31_wp !: thermal conductivity of snow [W/m/K], now namelist parameter for LIM3 #endif #if defined key_lim3 REAL(wp), PUBLIC :: r1_rhoic !: 1 / rhoic REAL(wp), PUBLIC :: r1_rhosn !: 1 / rhosn REAL(wp), PUBLIC :: r1_cpic !: 1 / cpic #endif !!---------------------------------------------------------------------- !! NEMO/OPA 3.3 , NEMO Consortium (2010) !! $Id$ !! Software governed by the CeCILL licence (NEMOGCM/NEMO_CeCILL.txt) !!---------------------------------------------------------------------- CONTAINS SUBROUTINE phy_cst !!---------------------------------------------------------------------- !! *** ROUTINE phy_cst *** !! !! ** Purpose : set and print the constants !!---------------------------------------------------------------------- IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) 'phy_cst : initialization of ocean parameters and constants' IF(lwp) WRITE(numout,*) '~~~~~~~' ! Define & print constants ! ------------------------ IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) ' Constants' IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) ' mathematical constant rpi = ', rpi rsiyea = 365.25_wp * rday * 2._wp * rpi / 6.283076_wp rsiday = rday / ( 1._wp + rday / rsiyea ) #if defined key_cice omega = 7.292116e-05 #else omega = 2._wp * rpi / rsiday #endif IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) ' day rday = ', rday, ' s' IF(lwp) WRITE(numout,*) ' sideral year rsiyea = ', rsiyea, ' s' IF(lwp) WRITE(numout,*) ' sideral day rsiday = ', rsiday, ' s' IF(lwp) WRITE(numout,*) ' omega omega = ', omega, ' s^-1' IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) ' nb of months per year raamo = ', raamo, ' months' IF(lwp) WRITE(numout,*) ' nb of hours per day rjjhh = ', rjjhh, ' hours' IF(lwp) WRITE(numout,*) ' nb of minutes per hour rhhmm = ', rhhmm, ' mn' IF(lwp) WRITE(numout,*) ' nb of seconds per minute rmmss = ', rmmss, ' s' IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) ' earth radius ra = ', ra, ' m' IF(lwp) WRITE(numout,*) ' gravity grav = ', grav , ' m/s^2' IF(lwp) WRITE(numout,*) IF(lwp) WRITE(numout,*) ' triple point of temperature rtt = ', rtt , ' K' IF(lwp) WRITE(numout,*) ' freezing point of water rt0 = ', rt0 , ' K' IF(lwp) WRITE(numout,*) ' melting point of snow rt0_snow = ', rt0_snow, ' K' IF(lwp) WRITE(numout,*) ' melting point of ice rt0_ice = ', rt0_ice , ' K' IF(lwp) WRITE(numout,*) ' reference density and heat capacity now defined in eosbn2.f90' #if defined key_lim3 || defined key_cice xlsn = lfus * rhosn ! volumetric latent heat fusion of snow [J/m3] #else cpic = rcpic / rhoic ! specific heat for ice [J/Kg/K] lfus = xlsn / rhosn ! latent heat of fusion of fresh ice #endif #if defined key_lim3 r1_rhoic = 1._wp / rhoic r1_rhosn = 1._wp / rhosn r1_cpic = 1._wp / cpic #endif IF(lwp) THEN WRITE(numout,*) #if defined key_cice WRITE(numout,*) ' thermal conductivity of the snow = ', rcdsn , ' J/s/m/K' #endif WRITE(numout,*) ' thermal conductivity of pure ice = ', rcdic , ' J/s/m/K' WRITE(numout,*) ' fresh ice specific heat = ', cpic , ' J/kg/K' WRITE(numout,*) ' latent heat of fusion of fresh ice / snow = ', lfus , ' J/kg' #if defined key_lim3 || defined key_cice WRITE(numout,*) ' latent heat of subl. of fresh ice / snow = ', lsub , ' J/kg' #else WRITE(numout,*) ' density times specific heat for snow = ', rcpsn , ' J/m^3/K' WRITE(numout,*) ' density times specific heat for ice = ', rcpic , ' J/m^3/K' WRITE(numout,*) ' volumetric latent heat fusion of sea ice = ', xlic , ' J/m' WRITE(numout,*) ' latent heat of sublimation of snow = ', xsn , ' J/kg' #endif WRITE(numout,*) ' volumetric latent heat fusion of snow = ', xlsn , ' J/m^3' WRITE(numout,*) ' density of sea ice = ', rhoic , ' kg/m^3' WRITE(numout,*) ' density of snow = ', rhosn , ' kg/m^3' WRITE(numout,*) ' density of freshwater (in melt ponds) = ', rhofw , ' kg/m^3' WRITE(numout,*) ' emissivity of snow or ice = ', emic WRITE(numout,*) ' salinity of ice = ', sice , ' psu' WRITE(numout,*) ' salinity of sea = ', soce , ' psu' WRITE(numout,*) ' latent heat of evaporation (water) = ', cevap , ' J/m^3' WRITE(numout,*) ' correction factor for solar radiation = ', srgamma WRITE(numout,*) ' von Karman constant = ', vkarmn WRITE(numout,*) ' Stefan-Boltzmann constant = ', stefan , ' J/s/m^2/K^4' WRITE(numout,*) WRITE(numout,*) ' conversion: degre ==> radian rad = ', rad WRITE(numout,*) WRITE(numout,*) ' smallest real computer value rsmall = ', rsmall ENDIF END SUBROUTINE phy_cst !!====================================================================== END MODULE phycst