Calculation of Composite Parameters

[xebadir]

Highly specialized, and perhaps not as transferable (nor computationally intensive):
SHIP:

SHIP[:,:] = (CAPE_MU[:,:]*Q_MU[:,:]*LAPSE[:,:]*-T500[:,:]*S06[:,:])/42000000.
        for i in range(0,nx):
                for j in range(0,ny):
                        if(CAPE_MU[j,i]<1300.):
                                SHIP[j,i] = SHIP[j,i]*(CAPE_MU[j,i]/1300.)
                        if(LAPSE[j,i]<5.8):
                                SHIP[j,i] = SHIP[j,i]*(LAPSE[j,i]/5.8)
                        if(FZL[j,i]<2400.):
                                SHIP[j,i] = SHIP[j,i]*(FZL[j,i]/2400)

STP and SCP:

        #Calculate Supercell/STP parameters
        # term1: cape term #
        term1 = CAPE_SB / 1500.
        # term2: LCL term #
        term2 = (2000. - SBLCL) / 1000.
        #set term2 values to 1 or 0 based on lcl height
        term2[SBLCL < 1000.] = 1.
        term2[SBLCL > 2000.] = 0.
        # term3: SRH term #
        term3 = srh1km / 150.
        # term4: 0-6km shear term # 
        term4 = S06 / 20.
        #cap term4 when 0-6km bwd > 30. m/s
        term4[S06 > 30.] = 1.5
        #set term4 to zero where 0-6km bwd < 12.5 m/s
        term4[S06 < 12.5] = 0.
        #cin mask
        term5 = np.fabs(CIN_SB)
        term5[np.fabs(CIN_SB)>125]=0.
        term5[np.fabs(CIN_SB)<=125]=1.
        # calc STP #
        STP = term1 * term2 * term3 * term4 * term5
        #calculate SCP#
        scp1 = CAPE_SB/1000.
        scp2 = srh3km/100.
        scp3 = S06/20.
        SCP = scp1*scp2*scp3*term5

EHI

        EHI3 = ((CAPE)*(SRH3))/(1.6*10**5)
        EHI1 = ((CAPE)*(SRH1))/(1.6*10**5)

SHERB/MOSHE (Requires Theta E calculation, and input of W):

        MOSH = (((LAPSE_3km-4.)**2)/4.)*((S15-8.)/10.)*((lsf+10.)/9.)
        MOSH[MOSH<0]=0.0

        #Calculate SHERB
        SHERB = ((S03/26.0)*(LAPSE_3km/5.2)*(LAPSE/5.6))

[chiaral]

MOSH = (((LAPSE_3km-4.)**2)/4.)((S15-8.)/10.)((lsf+10.)/9.)

What is S15 and lsf?

[chiaral]

Also can you list the quantities you need? just figuring out if we need something I haven't listed in issue #13

[chiaral]

if(FZL[j,i]<2400.):

how do you calculate FZL?

[chiaral]

if(FZL[j,i]<2400.):

how do you calculate FZL?

I found the f90 code for it. It appears as it should be again easy to wrap it.

[xebadir]

STP:
SBCAPE
SBCIN
SBLCL
0-1km SRH
0-6km Shear

SCP:
0-3km helicity
SBCAPE
0-6km Shear
SBCIN

SHIP:
MUCAPE
Specific Humidity of the Most Unstable Parcel
700-500mb LAPSE RATE c/km
(-500mb TEMP C)
(0-6km Shear m/s)

MOSH
0-3km Lapse Rate
0-1.5km Shear
Large Scale Forcing Parameter (its derived from omega and Theta e - not going to be possible pre conference).

SHERB:
0-3km Lapse Rate
700-500 mb Lapse Rate
0-3km Shear