ana_humid.h

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!!
      SUBROUTINE ana_humid (ng, tile, model)
!
!! git $Id$
!!======================================================================
!! Copyright (c) 2002-2025 The ROMS Group                              !
!!   Licensed under a MIT/X style license                              !
!!   See License_ROMS.md                                               !
!=======================================================================
!                                                                      !
!  This routine sets surface air humidity (moisture) using an          !
!  analytical expression.  There three types of humidity:              !
!                                                                      !
!     1) Absolute humidity: density of water vapor.                    !
!     2) Specific humidity: ratio of the mass of water vapor to        !
!        the mass of moist air cointaining the vapor (g/kg)            !
!     3) Relative humidity: ratio of the actual mixing ratio to        !
!        saturation mixing ratio of the air at given temperature       !
!        and pressure (percentage).                                    !
!                                                                      !
!=======================================================================
!
      USE mod_param
      USE mod_forces
      USE mod_ncparam
!
! Imported variable declarations.
!
      integer, intent(in) :: ng, tile, model
!
! Local variable declarations.
!
      character (len=*), parameter :: MyFile =                          &
     &  __FILE__
!
#include "tile.h"
!
      CALL ana_humid_tile (ng, tile, model,                             &
     &                     lbi, ubi, lbj, ubj,                          &
     &                     imins, imaxs, jmins, jmaxs,                  &
     &                     forces(ng) % Hair)
!
! Set analytical header file name used.
!
#ifdef DISTRIBUTE
      IF (lanafile) THEN
#else
      IF (lanafile.and.(tile.eq.0)) THEN
#endif
        ananame( 9)=myfile
      END IF
!
      RETURN
      END SUBROUTINE ana_humid
!
!***********************************************************************
      SUBROUTINE ana_humid_tile (ng, tile, model,                       &
     &                           LBi, UBi, LBj, UBj,                    &
     &                           IminS, ImaxS, JminS, JmaxS,            &
     &                           Hair)
!***********************************************************************
!
      USE mod_param
      USE mod_scalars
!
      USE exchange_2d_mod, ONLY : exchange_r2d_tile
#ifdef DISTRIBUTE
      USE mp_exchange_mod, ONLY : mp_exchange2d
#endif
!
!  Imported variable declarations.
!
      integer, intent(in) :: ng, tile, model
      integer, intent(in) :: LBi, UBi, LBj, UBj
      integer, intent(in) :: IminS, ImaxS, JminS, JmaxS
!
#ifdef ASSUMED_SHAPE
      real(r8), intent(out) :: Hair(LBi:,LBj:)
#else
      real(r8), intent(out) :: Hair(LBi:UBi,LBj:UBj)
#endif
!
!  Local variable declarations.
!
      integer :: i, j
 
#include "set_bounds.h"
!
!-----------------------------------------------------------------------
!  Set analytical surface air humidity.
!-----------------------------------------------------------------------
!
#if defined BENCHMARK
      DO j=jstrt,jendt
        DO i=istrt,iendt
          hair(i,j)=0.8_r8
        END DO
      END DO
#elif defined BL_TEST
      DO j=jstrt,jendt
        DO i=istrt,iendt
          hair(i,j)=0.776_r8
        END DO
      END DO
#else
      ana_humidity.h: no values provided for hair.
#endif
!
!  Exchange boundary data.
!
      IF (ewperiodic(ng).or.nsperiodic(ng)) THEN
        CALL exchange_r2d_tile (ng, tile,                               &
     &                          lbi, ubi, lbj, ubj,                     &
     &                          hair)
      END IF
 
#ifdef DISTRIBUTE
      CALL mp_exchange2d (ng, tile, model, 1,                           &
     &                    lbi, ubi, lbj, ubj,                           &
     &                    nghostpoints,                                 &
     &                    ewperiodic(ng), nsperiodic(ng),               &
     &                    hair)
#endif
!
      RETURN
      END SUBROUTINE ana_humid_tile