Exemple #1
0
omegain = f.variables['VVEL_P0_L100_GLL0'][levelindex_mid, ::-1, :].squeeze()

f.close

if diagnostic == 1:
    # Reading geopotential height from the second file.  Index 0 is the analysis field, and index 1 is the 3 hour forecast.  We already have the analysis field from above, so no need to read that in again.
    f = netCDF4.Dataset(fpath2, 'r')
    ghgtin_mid2 = f.variables['HGT_P0_L100_GLL0'][
        1, levelindex_mid, ::-1, :].squeeze()
    f.close
    geoph_tend = ghgtin_mid2 - ghgtin_mid

# Compute the geostrophic wind
if compute_geostrophic_wind == 'true':
    uin_lower, vin_lower = wm.geostrophic_latlon(uin_lower, vin_lower,
                                                 ghgtin_lower, lats, lons)
    uin_upper, vin_upper = wm.geostrophic_latlon(uin_upper, vin_upper,
                                                 ghgtin_upper, lats, lons)
    uin_mid, vin_mid = wm.geostrophic_latlon(uin_mid, vin_mid, ghgtin_mid,
                                             lats, lons)

lonin = lons
if diagnostic == 1:  # height tendency
    # Follow the example for diagnostic==2 below.  The key is to make sure your variable names end up as:
    # var_mid, var_lower, var_upper, var_adv_lower, var_adv_upper, and var_adv_mid
    putstuffhere = 1

    # compute absolute geostrophic vorticity at the middle level (call it var_mid)

    # var_lower is temp_lower and var_upper is temp_upper
    var_lower = temp_lower
vin1 =  f.variables['VGRD_P0_L100_GLL0'][levelindex1,::-1,:].squeeze()
vin2 =  f.variables['VGRD_P0_L100_GLL0'][levelindex2,::-1,:].squeeze()

# Same as for wind, but for geopotential heights
ghgtin1 = f.variables['HGT_P0_L100_GLL0'][levelindex1,::-1,:].squeeze()
ghgtin2 = f.variables['HGT_P0_L100_GLL0'][levelindex2,::-1,:].squeeze()

# Omega
omegain = f.variables['VVEL_P0_L100_GLL0'][levelindex3,::-1,:].squeeze()

# Close netcdf file
f.close

# Convert wind to geostrophic wind
if compute_geostrophic_wind == 'true' :
   uin1,vin1 = wm.geostrophic_latlon(uin1, vin1, ghgtin1, lats, lons)
   uin2,vin2 = wm.geostrophic_latlon(uin2, vin2, ghgtin2, lats, lons)

# Compute vertical voriticity
zeta_a1 = wm.vertical_vorticity_latlon(uin1, vin1, lats, lons, 1)
zeta_a2 = wm.vertical_vorticity_latlon(uin2, vin2, lats, lons, 1)

# Make all fields to be plotted cyclic
lonin = lons
u_plot1, lons = um.addcyclic(uin1, lonin)
v_plot1, lons = um.addcyclic(vin1, lonin)
u_plot2, lons = um.addcyclic(uin2, lonin)
v_plot2, lons = um.addcyclic(vin2, lonin)
zeta_a1, lons = um.addcyclic(zeta_a1, lonin)
zeta_a2, lons = um.addcyclic(zeta_a2, lonin)
omegain, lons = um.addcyclic(omegain, lonin)
omegain = f.variables['VVEL_P0_L100_GLL0'][levelindex_mid,::-1,:].squeeze()

f.close

if diagnostic == 1:
   # Reading geopotential height from the second file.  Index 0 is the analysis field, and index 1 is the 3 hour forecast.  We already have the analysis field from above, so no need to read that in again.   
   f = netCDF4.Dataset(fpath2,'r')
   ghgtin_mid2 = f.variables['HGT_P0_L100_GLL0'][1,levelindex_mid,::-1,:].squeeze()
   f.close
   geoph_tend = ghgtin_mid2 - ghgtin_mid



# Compute the geostrophic wind
if compute_geostrophic_wind == 'true' :
   uin_lower,vin_lower = wm.geostrophic_latlon(uin_lower, vin_lower, ghgtin_lower, lats, lons)
   uin_upper,vin_upper = wm.geostrophic_latlon(uin_upper, vin_upper, ghgtin_upper, lats, lons)
   uin_mid,vin_mid = wm.geostrophic_latlon(uin_mid, vin_mid, ghgtin_mid, lats, lons)



lonin = lons
if diagnostic == 1: # height tendency
   # Follow the example for diagnostic==2 below.  The key is to make sure your variable names end up as:
   # var_mid, var_lower, var_upper, var_adv_lower, var_adv_upper, and var_adv_mid
   putstuffhere = 1

   # compute absolute geostrophic vorticity at the middle level (call it var_mid)
   
   # var_lower is temp_lower and var_upper is temp_upper
   var_lower = temp_lower