def main(cubes):
# Load the data
res = convert.calc('residual_pv', cubes)
pv = convert.calc('ertel_potential_vorticity', cubes)
expected_pv = pv - res
stats = []
# Calculation correlation on each model level
for n in range(pv.shape[0]):
stats.append(
linregress(pv[n].data.flatten(), expected_pv[n].data.flatten()))
stats = np.array(stats)
print(stats.shape)
fig = plt.figure(figsize=(18, 20))
ax = plt.subplot2grid((2, 2), (0, 0))
plt.plot(stats[:, 2])
plt.title('Correlation Coefficient')
ax = plt.subplot2grid((2, 2), (1, 0))
plt.plot(stats[:, 0])
plt.title('Gradient')
ax = plt.subplot2grid((2, 2), (1, 1))
plt.plot(stats[:, 1])
plt.title('Intercept')
plt.show()
def pv(forecast, analysis, variable, levels, **kwargs):
pv_f = convert.calc(variable, forecast, levels=levels)[0]
pv_a = convert.calc(variable, analysis, levels=levels)[0]
err = pv_f - pv_a
axes = []
# Initialise the plot
fig = plt.figure(figsize=(18, 20))
axes.append(plt.subplot2grid((25, 4), (0, 0), colspan=2, rowspan=10))
im = make_pv_plot(pv_f, **kwargs)
plt.title('Forecast')
axes.append(plt.subplot2grid((25, 4), (0, 2), colspan=2, rowspan=10))
im = make_pv_plot(pv_a, **kwargs)
plt.title('Analysis')
ax = plt.subplot2grid((25, 4), (10, 1), colspan=2, rowspan=1)
cbar = plt.colorbar(im, cax=ax, orientation='horizontal')
axes.append(plt.subplot2grid((25, 4), (13, 1), colspan=2, rowspan=10))
im = iplt.pcolormesh(err, vmin=-5, vmax=5, cmap='coolwarm')
iplt.contour(pv_f, [2], colors='k', linewidths=2)
iplt.contour(pv_a, [2], colors='k', linewidths=2, linestyles='--')
add_map()
plt.title('Forecast Minus Analysis')
ax = plt.subplot2grid((25, 4), (23, 1), colspan=2, rowspan=1)
cbar = plt.colorbar(im, cax=ax, orientation='horizontal')
for n, ax in enumerate(axes):
ax.set_title(ascii_lowercase[n].ljust(20))
plt.show()
def main(cubes):
theta = convert.calc('equivalent_potential_temperature', cubes)
P = convert.calc('air_pressure', cubes)
P.convert_units('hPa')
mass = convert.calc('mass', cubes)
lon, lat = grid.true_coords(theta)
lonmask = np.logical_or(lon < -15, lon > 5)
latmask = np.logical_or(lat < 47.5, lat > 62.5)
areamask = np.logical_or(lonmask, latmask)
masks = [
np.logical_or(theta.data < theta_front, areamask),
np.logical_or(theta.data > theta_front, areamask)
]
#overview(cubes, areamask)
#plt.savefig(plotdir + 'composite_iop8_24h_overview_750hpa.pdf')
# plt.show()
z_cold, z_warm = bl_heights(cubes, theta, areamask)
# Initialise the plot
fig = plt.figure(figsize=(18, 12))
diags = convert.calc(names, cubes)
masses = []
# Rows are different masks
for n, mask in enumerate(masks):
means = diagnostics.averaged_over(diags, levels, P, mass, mask)
masses.append(convert.calc('mass', means))
# Columns are for different mappings
for m, mapping in enumerate(mappings):
ax = plt.subplot2grid((2, ncol), (n, m))
composite(means, ax, mapping, mass, P)
add_trimmings(ax, n, m)
if m == 0:
ax.set_xlim(0.1, 1.3)
elif m == 1:
ax.set_xlim(-0.6, 0.6)
else:
ax.set_xlim(-1, 1)
multilabel(ax, 3 * n + m, yreversed=True, fontsize=25)
if n == 0:
plt.axhline(z_cold, color='k', linestyle='--')
elif n == 1:
plt.axhline(z_warm, color='k', linestyle='--')
add_figlabels(fig)
fig.savefig(plotdir + 'composite_iop5_24h.pdf')
plt.figure()
for mass in masses:
qplt.plot(mass, mass.coord('air_pressure'))
ax.set_ylim(950, 500)
plt.show()
return
def main(cubes, **kwargs):
"""Calculate and plot the distance from the tropopause to cloud
"""
pv = convert.calc('ertel_potential_vorticity', cubes)
cl = convert.calc('mass_fraction_of_cloud', cubes)
# Get altitude as a cube
z = grid.make_cube(pv, 'altitude')
# Add pv and cloud as coordinates to the altitude cube
pv = grid.make_coord(pv)
z.add_aux_coord(pv, [0, 1, 2])
cl = grid.make_coord(cl)
z.add_aux_coord(cl, [0, 1, 2])
# Calculate the height of the cloud top
z_cloud = interpolate.to_level(z, mass_fraction_of_cloud=[1e-5])[0]
# Calculate the height of the tropopause
z_pv2 = interpolate.to_level(z, ertel_potential_vorticity=[2])[0]
# Calculate the distance from tropopause to cloud
dz = z_pv2.data - z_cloud.data
dz = z_pv2.copy(data=dz)
# Plot
plot.pcolormesh(dz, **kwargs)
plt.show()
def get_startpoints(cubes):
"""Find all points within 1km of the tropopause that have a negative PV
anomaly
"""
# Find the tropopause height
pv = convert.calc('ertel_potential_vorticity', cubes)
grid.add_hybrid_height(pv)
z = grid.make_cube(pv, 'altitude').data
zpv2 = get_tropopause_height(pv).data * np.ones_like(z)
# Find point below the tropopause
tropopause_relative = np.logical_and(z < zpv2, z > zpv2 - 2000)
# Find negative pv anomalies
diff = convert.calc('total_minus_advection_only_pv', cubes)
negative_pv = diff.data < -1
# Combine criteria
criteria = np.logical_and(negative_pv, tropopause_relative)
# Get indices where criterion is met
indices = np.where(criteria)
# Convert to lon, lat, z
longitude = pv.coord('grid_longitude').points
lons = np.array([longitude[idx] for idx in indices[2]])
latitude = pv.coord('grid_latitude').points
lats = np.array([latitude[idx] for idx in indices[1]])
height = pv.coord('level_height').points
altitude = np.array([height[idx] for idx in indices[0]])
# Make start points array
start_points = np.array([lons, lats, altitude]).transpose()
return start_points
def make_plot(forecast, analysis, variable, levels, units, errlevs, clevs,
cmap='coolwarm', mask=None):
# Extract data and errors
f = convert.calc(variable, forecast, levels=levels)[0]
a = convert.calc(variable, analysis, levels=levels)[0]
err = f - a
for cube in [f, a, err]:
cube.convert_units(units)
if mask is not None:
for cube in [f, a]:
cube.data = np.ma.masked_where(mask, cube.data)
# Plot error
iplt.contourf(err, errlevs, cmap=cmap, extend='both')
add_map()
cbar = plt.colorbar(orientation='horizontal', spacing='proportional')
errlevs.append(0)
cbar.set_ticks(errlevs)
cbar.set_label(units)
# Overlay forecast and analysis
cs = iplt.contour(f, clevs, colors='k', linewidths=2)
iplt.contour(a, clevs, colors='k', linewidths=2, linestyles='--')
plt.clabel(cs, fmt='%1.0f', colors='k')
return
def main():
# Load the variables
cubes = forecast.set_lead_time(hours=18)
x = convert.calc(names, cubes)
surface = convert.calc('boundary_layer_height', cubes)
# Mask points within 100 gridpoints of land
z = convert.calc('altitude', cubes)
zm = filters.maximum_filter(z[0].data, 100)
mask = zm > 20
# Interpolate relative to boundary layer height
output = diagnostics.profile(x, surface, dz, mask=mask)
# Plot the variables
for cube in output:
c = second_analysis.all_diagnostics[cube.name()]
iplt.plot(cube,
cube.coord('distance_from_boundary_layer_height'),
color=c.color,
linestyle=c.linestyle,
label=c.symbol)
plt.axvline(color='k')
plt.axhline(color='k')
legend(key=second_analysis.get_idx, loc='best', ncol=2)
plt.show()
return
def height(cubes):
# Calculate the tropopause height
pv = convert.calc('ertel_potential_vorticity', cubes)
q = convert.calc('specific_humidity', cubes)
trop, fold_t, fold_b = tropopause.dynamical(pv, q)
return trop, fold_t, fold_b
def main(cubes):
lon, lat = grid.true_coords(cubes[0])
z300 = convert.calc('altitude',
cubes,
levels=('equivalent_potential_temperature', [300]))[0]
z300.convert_units('km')
mslp = convert.calc('air_pressure_at_sea_level', cubes)
mslp.convert_units('hPa')
# Plot overview
plot.contourf(z300, np.linspace(0, 10, 11))
cs = iplt.contour(mslp, np.linspace(950, 1050, 11), colors='k')
plt.clabel(cs, fmt='%1.0f')
# Warm Sector
warm_sector = z300.data.mask
plim = mslp.data < 1000
loc = np.logical_and(lon > -10, lon < 5)
ws_mask = np.logical_and(np.logical_and(warm_sector, loc), plim)
ws_mask = mslp.copy(data=ws_mask)
iplt.contour(ws_mask, linestyles='--', colors='r')
# Cold Sector
cold_sector = z300.data < 5
loc = np.logical_and(loc, lat < 65)
cs_mask = np.logical_and(np.logical_and(cold_sector, loc), plim)
cs_mask = mslp.copy(data=cs_mask)
iplt.contour(cs_mask, linestyles='--', colors='b')
plt.title(r'$z(\theta_e = 300)$')
return
def pv_tracer(cubes, name, vmin=-2, vmax=2, cmap='coolwarm'):
cube = convert.calc(name, cubes)
epv = convert.calc('ertel_potential_vorticity', cubes)
adv = convert.calc('advection_only_pv', cubes)
plot.pcolormesh(cube, pv=epv, vmin=vmin, vmax=vmax, cmap=cmap)
adv.data = np.abs(adv.data)
iplt.contour(adv, [2], colors='k', linestyle='--')
return
def mass_integrals(cubes, x, y, glat, gridpoints, theta_level, dtheta):
"""
Args:
cubes (iris.cube.CubeList):
x (np.Array): Circuit longitudes
y (np.Array): Circuit latitudes
glat (np.array): Grid latitudes
gridpoints(np.Array): Array of gridpoint longitudes and latitudes of
shape (ngp, 2)
theta_level:
dtheta (int): Isentrope spacing used to calculate volume integrals
Returns:
"""
# Include points within circuit boundary
points = np.array([x, y]).transpose()
pth = Path(points)
# Mask all points that are not contained in the circuit
mask = np.logical_not(pth.contains_points(gridpoints).reshape(glat.shape))
# Area = r**2 cos(phi) dlambda dphi
levels = ('air_potential_temperature',
[theta_level - dtheta / 2.0, theta_level,
theta_level + dtheta / 2.0])
zth = convert.calc('altitude', cubes, levels=levels)
area = (a + zth[1]) ** 2 * np.cos(np.deg2rad(glat)) * np.deg2rad(0.11) ** 2
area.units = 'm^2'
area.rename('area')
total_area = integrate(area, mask)
# Volume = area * dz
volume = area * (zth[2] - zth[0])
volume.rename('volume')
total_volume = integrate(volume, mask)
# Mass = density * volume
levels = ('air_potential_temperature', [theta_level])
density = convert.calc('air_density', cubes, levels=levels)[0]
mass = density * volume
mass.rename('mass')
total_mass = integrate(mass, mask)
# Circulation = \int rho.pv.dv / dtheta
pv = convert.calc('ertel_potential_vorticity', cubes, levels=levels)[0]
pv.convert_units('m^2 K s-1 kg-1')
pv_substance = pv * mass
circulation = integrate(pv_substance, mask) / dtheta
circulation.rename('mass_integrated_circulation')
return total_area, total_volume, total_mass, circulation
def make_plots(forecast, analysis, variable, levels, units, errlevs, clevs,
cmap1='plasma', cmap='coolwarm', mask=None):
# Extract data and errors
f = convert.calc(variable, forecast, levels=levels)[0]
a = convert.calc(variable, analysis, levels=levels)[0]
err = f - a
for cube in [f, a, err]:
cube.convert_units(units)
if mask is not None:
for cube in [f, a]:
cube.data = np.ma.masked_where(mask, cube.data)
# Initialise the plot
plt.figure(figsize=(18, 15))
# Plot absolute values
plt.subplot2grid((25, 4), (0, 0), colspan=2, rowspan=10)
im = iplt.contourf(f, clevs, extend='both', cmap=cmap1)
#iplt.contour(f, [2], colors='k')
plt.title('(a)'.ljust(28) + 'Forecast'.ljust(35))
add_map()
plt.subplot2grid((25, 4), (0, 2), colspan=2, rowspan=10)
im = iplt.contourf(a, clevs, extend='both', cmap=cmap1)
#iplt.contour(a, [2], colors='k', linestyles='--')
plt.title('(b)'.ljust(28) + 'Analysis'.ljust(35))
add_map()
ax = plt.subplot2grid((25, 4), (10, 1), colspan=2, rowspan=1)
cbar = plt.colorbar(im, cax=ax, orientation='horizontal')
cbar.set_label(units)
# cbar.set_ticks(range(11))
# Plot error
plt.subplot2grid((25, 4), (13, 1), colspan=2, rowspan=10)
im = iplt.contourf(err, errlevs, cmap=cmap, extend='both')
#iplt.contour(f, [2], colors='k')
#iplt.contour(a, [2], colors='k', linestyles='--')
plt.title('(c)'.ljust(20) + 'Forecast Minus Analysis.'.ljust(38))
add_map()
ax = plt.subplot2grid((25, 4), (23, 1), colspan=2, rowspan=1)
cbar = plt.colorbar(im, cax=ax, orientation='horizontal',
spacing='proportional')
errlevs.append(0)
cbar.set_ticks(errlevs)
cbar.set_label(units)
return
def main(cubes):
pv = convert.calc('air_potential_temperature',
cubes,
levels=('ertel_potential_vorticity', [2]))[0]
theta = convert.calc('air_potential_temperature',
cubes,
levels=('air_pressure', [85000]))[0]
plot.pcolormesh(theta, vmin=250, vmax=300)
iplt.contour(pv, [300, 320], colors='k')
plt.show()
return
def main(cubes):
mass = convert.calc('mass', cubes)
water = convert.calc('mass_fraction_of_water', cubes)
total_water = mass * water
tcw = total_water.collapsed('atmosphere_hybrid_height_coordinate', SUM)
mslp = convert.calc('air_pressure_at_sea_level', cubes)
mslp.convert_units('hPa')
plot.pcolormesh(tcw, vmin=0, vmax=5e9, cmap='Greys_r')
iplt.contour(mslp, np.linspace(950, 1050, 11), colors='k', linewidths=2)
plt.show()
return
def forward_trajectories(forecast):
"""Calculate 48 hour forward trajectories from low levels
Start trajectories from all points below 2km
"""
cubes = forecast.set_lead_time(hours=48)
z = convert.calc('altitude', cubes)
theta = convert.calc('air_potential_temperature', cubes)
theta_adv = convert.calc('advection_only_theta', cubes)
pv = convert.calc('ertel_potential_vorticity', cubes)
lon, lat = grid.true_coords(pv)
glon, glat = grid.get_xy_grids(pv)
time = grid.get_datetime(pv)
nz, ny, nx = pv.shape
eqlats = rossby_waves.eqlats
cs = iris.Constraint(time=time)
with iris.FUTURE.context(cell_datetime_objects=True):
eqlat = eqlats.extract(cs)[0]
# Interpolate to the theta and PV surfaces
eqlat = interpolate.main(eqlat, ertel_potential_vorticity=2)
eqlat = interpolate.main(eqlat,
potential_temperature=theta.data.flatten())
# Define the start points
trainp = []
for k in range(nz):
print(k)
for j in range(ny):
for i in range(nx):
if (theta_adv.data[k, j, i] < 300 < theta.data[k, j, i] and
pv.data[k, j, i] < 2 and
lat[j, i] > eqlat.data[k * ny * nx + j * nx + i]):
trainp.append([glon[j, i], glat[j, i], z.data[k, j, i]])
trainp = np.array(trainp)
plot.pcolormesh(pv[33], vmin=0, vmax=10, cmap='cubehelix_r', pv=pv[33])
plt.scatter(trainp[:, 0], trainp[:, 1])
plt.show()
# Calculate the trajectories
tracers = ['air_potential_temperature', 'air_pressure']
traout = caltra.caltra(trainp, mapping, fbflag=-1, tracers=tracers)
# Save the trajectories
traout.save(datadir + 'backward_trajectories.pkl')
def main(cubes, levels, *args, **kwargs):
# Initialise the plot
fig = plt.figure(figsize=(18, 20))
for n, name in enumerate(names):
row = n / ncols
col = n - row * ncols
print(row, col)
ax = plt.subplot2grid((nrows, ncols), (row, col))
cube = convert.calc(name, cubes, levels=levels)[0]
im = iplt.pcolormesh(cube, *args, **kwargs)
add_map()
plt.title(second_analysis.all_diagnostics[name].symbol, fontsize=30)
for n, ax in enumerate(fig.axes):
multilabel(ax, n, fontsize=25)
cbar = plt.colorbar(im, ax=fig.axes, orientation='horizontal',
fraction=0.05, spacing='proportional')
cbar.set_label('PVU')
# cbar.set_ticks(np.array(levels)[::2])
plt.savefig(plotdir + '../../iop8_bl_map.png')
# plt.show()
return
def create_startf(cubes, theta_level, output_file):
"""Creates a startfile for lagranto for the whole grid on a single
isentropic surface
Reference date 20111129_2300 / Time range 0 min
time lon lat p level
---------------------------------------
0.00 -10.000 50.000 258 320.000
"""
# Find pressure on theta level
P = convert.calc('air_pressure',
cubes,
levels=('air_potential_temperature', theta_level))[0].data
# Get longitude and latitude
lon, lat = grid.true_coords(P)
# Create startfile
with open(output_file, 'w') as output:
output.write('Reference date 20111129_2300 / Time range 0 min\n')
output.write('\n')
output.write(' time lon lat p level\n')
output.write('---------------------------------------\n')
output.write('\n')
ny, nx = P.shape
for j in xrange(ny):
for i in xrange(nx):
output.write(' 0.00 ' + str(round(lon[j, i], 3)) + ' ' +
str(round(lat[j, i], 3)) + ' ' +
str(round(P[j, i] / 100.0, 0)) + ' ' +
str(theta_level) + '\n\n')
def create_startpoints(cubes, coordinate, values):
"""Create an array of startpoints
Output array has shape Nx3 where N is the number of startpoints and the 3
indices are for longitude, latitude and altitude.
Args:
cubes (iris.cube.CubeList)
Returns:
train (np.array): The input array to trajectory calculations
"""
# Get the values of altitude at the given coordinate
P = convert.calc(coordinate, cubes)
z = grid.make_cube(P, 'altitude')
z.add_aux_coord(grid.make_coord(P), [0, 1, 2])
z500 = interpolate.to_level(z, **{coordinate: values})[0].data
lon, lat = grid.get_xy_grids(P)
# Convert the 2d arrays to an Nx3 array
train = np.array([lon.flatten(),
lat.flatten(),
z500.flatten()]).transpose()
return train
def ridges_troughs(cubes):
thetapv2 = convert.calc('air_potential_temperature', cubes,
levels=('ertel_potential_vorticity', [2]))[0]
ridges, troughs = rossby_waves.make_nae_mask(thetapv2, year=2009)
return ridges, troughs
def create_startpoints(cubes, levels, stride=1):
"""Create an array of startpoints
Output array has shape Nx3 where N is the number of startpoints and the 3
indices are for longitude, latitude and altitude.
Args:
cubes (iris.cube.CubeList)
Returns:
train (np.array): The input array to trajectory calculations
"""
# Get the values of altitude at the given coordinate
z = convert.calc('altitude', cubes, levels=levels)
# Get the grid latitude and longitude as 2d arrays
lon, lat = grid.get_xy_grids(z)
# Convert the 2d arrays to an Nx3 array
nz = z.shape[0]
lon = np.tile(lon[::stride, ::stride].flatten(), nz)
lat = np.tile(lat[::stride, ::stride].flatten(), nz)
z = z.data[:, ::stride, ::stride].flatten()
train = np.array([lon, lat, z]).transpose()
return train
def main(cubes):
"""Find all points within 1km of the tropopause that have a negative PV
anomaly
"""
# Find negative pv anomalies
diff = convert.calc('total_minus_advection_only_pv', cubes)
negative_pv = diff.data < -1
# Find the tropopause height
ztrop, fold_t, fold_b = tropopause.height(cubes)
# Find point below the tropopause
z = diff.coord('altitude').points
tropopause_relative = np.logical_and(z < ztrop, z > ztrop - 2000)
# Combine criteria
criteria = np.logical_and(negative_pv, tropopause_relative)
# Get indices where criterion is met
indices = np.where(criteria)
# Convert to lon, lat, z
longitude = diff.coord('grid_longitude').points
lons = np.array([longitude[idx] for idx in indices[2]])
latitude = diff.coord('grid_latitude').points
lats = np.array([latitude[idx] for idx in indices[1]])
height = grid.extract_dim_coord(diff, 'z').points
altitude = np.array([height[idx] for idx in indices[0]])
# Scatterplot the locations
fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')
ax.scatter(lons, lats, altitude)
plt.show()
def main(cubes, dz, name, **kwargs):
"""Produces cross section plots above and below the tropopause
"""
# Extract cube to be plotted
cube = convert.calc(name, cubes)
# Find the height of the tropopause
ztrop, fold_t, fold_b = tropopause.height(cubes)
# Produce a new co-ordinate above and below the tropopause
ny, nx = ztrop.shape
new_coord = np.zeros([3, ny, nx])
new_coord[0, :, :] = ztrop.data - dz
new_coord[1, :, :] = ztrop.data
new_coord[2, :, :] = ztrop.data + dz
# Interpolate the cubes to be plotted to the coordinate above and below the
# tropopause
plotcube = interpolate.to_level(cube, altitude=new_coord)
# Plot the cross sections
for n in xrange(3):
plt.figure()
plot.pcolormesh(plotcube[n], **kwargs)
plt.show()
def make_plot(cubes, rings, wcb, theta_level, n):
# Plot a map at verification time
levels = ('air_potential_temperature', [theta_level])
pv = convert.calc('ertel_potential_vorticity', cubes, levels=levels)[0]
plot.pcolormesh(pv, vmin=-2, vmax=2, cmap='coolwarm')
iplt.contour(pv, [0, 2], colors='k', linewidths=2)
add_map()
# Load the trajectories
x = wcb['grid_longitude'] - 360
y = wcb['grid_latitude']
c = wcb['air_potential_temperature']
# Plot the 3d trajectory positions
plt.scatter(x[:, -n],
y[:, -n],
c=c[:, -n],
vmin=300,
vmax=340,
cmap='coolwarm')
# Plot the isentropic boundary
x = rings['grid_longitude'] - 360
y = rings['grid_latitude']
plt.plot(x[:, -n], y[:, -n], color='r', linewidth=3)
return
def main():
forecasts = [case_studies.iop5b.copy(), case_studies.iop8.copy()]
fig = plt.figure(figsize=(18, 8))
for n, forecast in enumerate(forecasts):
ax = plt.subplot2grid((1, 2), (0, n))
cubes = forecast.set_lead_time(hours=24)
theta = convert.calc('air_potential_temperature', cubes)
bl_type = convert.calc('boundary_layer_type', cubes)
for m in range(4):
mask = np.logical_not(
np.logical_or(bl_type.data == 2 * m,
bl_type.data == 2 * m + 1))
mask = mask * np.ones_like(theta.data)
mean = theta_profile(theta, mask)
mean = mean - mean[0]
iplt.plot(mean,
mean.coord('atmosphere_hybrid_height_coordinate'),
style[m],
label=label[m])
#mask = np.logical_not(mask)
#mean = theta_profile(theta, mask)
# iplt.plot(mean, mean.coord('atmosphere_hybrid_height_coordinate'),
# '-kx')
ax.set_xlim(-0.25, 4.5)
ax.set_xlabel(r'$\theta$')
ax.set_ylim(0, 1000)
if n == 0:
ax.set_ylabel('Height (m)')
ax.set_title('IOP5')
else:
ax.get_yaxis().set_ticklabels([])
ax.set_title('IOP8')
plt.axvline(color='k')
multilabel(ax, n)
legend(ax, loc='upper left', ncol=2, bbox_to_anchor=(-0.6, -0.2))
fig.subplots_adjust(bottom=0.4)
fig.savefig(plotdir + 'theta_profiles.pdf')
plt.show()
return
def make_plots(field, cubes, levels, path):
name = field.pop("name")
cube = convert.calc(name, cubes, levels=(levels["name"], levels["values"]))
for n, level in enumerate(levels["values"]):
plot.pcolormesh(cube[n], **field)
plt.savefig("{}{}_{}_{}.png".format(path, name, levels["name"],
levels["values"][n]))
plt.clf()
def main(cubes):
pv = convert.calc('ertel_potential_vorticity', cubes, levels=levels)[0]
adv = convert.calc('advection_only_pv', cubes, levels=levels)[0]
for n, name in enumerate([
'sum_of_physics_pv_tracers', 'epsilon',
'dynamics_tracer_inconsistency', 'residual_pv'
]):
cube = convert.calc(name, cubes, levels=levels)[0]
m = n / 2
ax = plt.subplot2grid((2, 2), (n - 2 * m, m))
iplt.contourf(cube, clevs, cmap=cmap)
add_map()
iplt.contour(pv, [2], colors='k', linestyles='-')
iplt.contour(adv, [2], colors='k', linestyles='-')
plt.show()
def main():
lead_time = 48
levels = ('air_potential_temperature', [320])
forecast = case_studies.iop5_extended.copy()
cubes = forecast.set_lead_time(hours=lead_time)
dtheta = convert.calc('total_minus_advection_only_theta',
cubes,
levels=levels)[0]
pv = convert.calc('ertel_potential_vorticity', cubes, levels=levels)[0]
closed_loop, points = get_points(dtheta.copy(), pv.copy())
closed_loop = increase_circuit_resolution(closed_loop, 25000)
make_plot(dtheta, pv, closed_loop, vmin=-20, vmax=20, cmap='coolwarm')
return
def main(cubes, levels, *args, **kwargs):
# Initialise the plot
fig = plt.figure(figsize=(18, 20))
pv = convert.calc('ertel_potential_vorticity', cubes, levels=levels)[0]
theta = convert.calc('equivalent_potential_temperature', cubes,
levels=levels)[0][slices]
rh = convert.calc('relative_humidity', cubes, levels=levels)[0][slices]
lon, lat = grid.true_coords(theta)
lonmask = np.logical_or(lon < -15, lon > 5)
latmask = np.logical_or(lat < 47.5, lat > 62.5)
areamask = np.logical_or(lonmask, latmask)
mask = theta.copy(data=areamask.astype(int))
for n, name in enumerate(names):
row = n / ncols
col = n - row * ncols
print(row, col)
ax = plt.subplot2grid((nrows, ncols), (row, col))
cube = convert.calc(name, cubes, levels=levels)[0] # [slices]
im = iplt.contourf(cube, *args, **kwargs)
#iplt.contour(pv, [2], colors='k', linewidths=2)
iplt.contour(mask, [0.5], colors='k', linestyles='--')
add_map()
plt.title(second_analysis.all_diagnostics[name].symbol)
iplt.contour(theta, [300], colors='k', linewidths=2)
iplt.contour(rh, [0.8], colors='w', linewidths=2)
iplt.contourf(rh, [0.8, 2], colors='None', hatches=['.'])
for n, ax in enumerate(fig.axes):
multilabel(ax, n)
cbar = plt.colorbar(im, ax=fig.axes, orientation='horizontal',
fraction=0.05, spacing='proportional')
cbar.set_label('PVU')
cbar.set_ticks(np.linspace(-2, 2, 17)[::2])
plt.savefig(plotdir + 'iop5_pv_tracers_24h_' +
str(levels[1][0])[0:3] + 'hpa.pdf')
# plt.show()
return
def compare_pv(cubes, rdf_pv, p_level, *args, **kwargs):
# Calculate required variables
pv = convert.calc('ertel_potential_vorticity', cubes,
levels=('air_pressure', [p_level]))[0]
adv = convert.calc('advection_only_pv', cubes,
levels=('air_pressure', [p_level]))[0]
qsum = convert.calc('sum_of_physics_pv_tracers', cubes,
levels=('air_pressure', [p_level]))[0]
diff = pv - qsum
diff.rename('pv_minus_physics_pv_tracers')
# Plot both figures
for cube in [diff, adv, rdf_pv]:
plt.figure()
plot.contourf(cube, *args, **kwargs)
return
def _single_fit(coord, subdomain, dz, function, **kwargs):
cubes = second_analysis.get_data(coord, subdomain)
pv = convert.calc(variable, cubes)
x, y, dy = function(pv, coord, dz)
popt, pcov, rmse = fit_curve(x, y, dy)
print(popt, rmse)
plot_fit(x, y, dy, popt, **kwargs)
return popt, rmse