A collection of diagnostic and interpolation routines for use with output from the Weather Research and Forecasting (WRF-ARW) Model.
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! These are chosen to match the wrf module_model_constants.F where
! applicable
MODULE wrf_constants
INTEGER :: ERRLEN=512
INTEGER :: ALGERR=64
REAL(KIND=8), PARAMETER :: WRF_EARTH_RADIUS = 6370000.D0
REAL(KIND=8), PARAMETER :: T_BASE = 300.0D0
REAL(KIND=8), PARAMETER :: PI = 3.1415926535897932384626433D0
REAL(KIND=8), PARAMETER :: RAD_PER_DEG = PI/180.D0
REAL(KIND=8), PARAMETER :: DEG_PER_RAD = 180.D0/PI
REAL(KIND=8), PARAMETER :: DEFAULT_FILL = 9.9692099683868690E36
INTEGER(KIND=1), PARAMETER :: DEFAULT_FILL_INT8 = -127
INTEGER(KIND=2), PARAMETER :: DEFAULT_FILL_INT16 = -32767
INTEGER(KIND=4), PARAMETER :: DEFAULT_FILL_INT32 = -2147483647
INTEGER(KIND=8), PARAMETER :: DEFAULT_FILL_INT64 = INT(-9223372036854775806D0, KIND=8)
REAL(KIND=4), PARAMETER :: DEFAULT_FILL_FLOAT = 9.9692099683868690E36
REAL(KIND=8), PARAMETER :: DEFAULT_FILL_DOUBLE = 9.9692099683868690E36
CHARACTER(LEN=1), PARAMETER :: DEFAULT_FILL_CHAR = ACHAR(0)
REAL(KIND=8), PARAMETER :: P1000MB = 100000.D0
! j/k/kg
REAL(KIND=8), PARAMETER :: RD = 287.D0
REAL(KIND=8), PARAMETER :: RV = 461.6D0
!REAL(KIND=8), PARAMETER :: RV = 461.5D0
! j/k/kg note: not using bolton's value of 1005.7
REAL(KIND=8), PARAMETER :: CP = 1004.5D0
!REAL(KIND=8), PARAMETER :: CP = 1004D0
REAL(KIND=8), PARAMETER :: G = 9.81D0
REAL(KIND=8), PARAMETER :: USSALR = 0.0065D0 ! deg C per m
REAL(KIND=8), PARAMETER :: CELKEL = 273.15D0
REAL(KIND=8), PARAMETER :: CELKEL_TRIPLE = 273.16D0
!REAL(KIND=8), PARAMETER :: GRAV = 9.81D0
! hpa
REAL(KIND=8), PARAMETER :: EZERO = 6.112D0
REAL(KIND=8), PARAMETER :: ESLCON1 = 17.67D0
REAL(KIND=8), PARAMETER :: ESLCON2 = 29.65D0
REAL(KIND=8), PARAMETER :: EPS = 0.622D0
REAL(KIND=8), PARAMETER :: GAMMA = RD/CP
! cp_moist=cp*(1.+cpmd*qvp)
REAL(KIND=8), PARAMETER :: CPMD = .887D0
! rgas_moist=rgas*(1.+rgasmd*qvp)
REAL(KIND=8), PARAMETER :: RGASMD = .608D0
! gamma_moist=gamma*(1.+gammamd*qvp)
REAL(KIND=8), PARAMETER :: GAMMAMD = RGASMD - CPMD
REAL(KIND=8), PARAMETER :: TLCLC1 = 2840.D0
REAL(KIND=8), PARAMETER :: TLCLC2 = 3.5D0
REAL(KIND=8), PARAMETER :: TLCLC3 = 4.805D0
REAL(KIND=8), PARAMETER :: TLCLC4 = 55.D0
! k
REAL(KIND=8), PARAMETER :: THTECON1 = 3376.D0
REAL(KIND=8), PARAMETER :: THTECON2 = 2.54D0
REAL(KIND=8), PARAMETER :: THTECON3 = .81D0
REAL(KIND=8), PARAMETER :: ABSCOEFI = .272D0 ! cloud ice absorption coefficient in m^2/g
REAL(KIND=8), PARAMETER :: ABSCOEF = .145D0 ! cloud water absorption coefficient in m^2/g
REAL(KIND=8), PARAMETER :: GAMMA_SEVEN = 720.D0
REAL(KIND=8), PARAMETER :: RHOWAT = 1000.D0
REAL(KIND=8), PARAMETER :: RHO_R = RHOWAT
REAL(KIND=8), PARAMETER :: RHO_S = 100.D0
REAL(KIND=8), PARAMETER :: RHO_G = 400.D0
REAL(KIND=8), PARAMETER :: ALPHA = 0.224D0
REAL(KIND=8), PARAMETER :: SCLHT = RD*256.D0/G
REAL(KIND=8), PARAMETER :: EXPON = RD*USSALR/G
REAL(KIND=8), PARAMETER :: EXPONI = 1./EXPON
END MODULE wrf_constants