def make_figure2():
plt.rc('font', size = 17)
plt.rc('text', usetex = True)
# Values for the pathological problem
y0 = 0.5
y1 = 0
T0 = 335 # temperature at 1 bar
T1 = 375 # temperature at 1 bar
s0 = thermo.entropy(y0, thermo.bar, T0)
s1 = thermo.entropy(y1, thermo.bar, T1)
print ('value of w for wet parcel', thermo.compute_w(y0))
n = 10000
p = np.linspace(4e4, 6.5e4, n)
dhdp0 = np.zeros((n,))
dhdp1 = np.zeros((n,))
Tv0 = np.zeros((n,))
Tv1 = np.zeros((n,))
for i in range(n):
dhdp0[i] = thermo.enthalpy_dp(y0, p[i], s0)
dhdp1[i] = thermo.enthalpy_dp(y1, p[i], s1)
Tv0[i] = thermo.virtual_temperature(y0, thermo.bar, s0)
Tv1[i] = thermo.virtual_temperature(y1, thermo.bar, s1)
plt.clf()
plt.plot(dhdp1, p / 100, '-', label = 'dry parcel')
plt.plot(dhdp0, p / 100, '--', label = 'wet parcel')
plt.xlabel("{\\huge $\\partial_p h$} (J kg$^{-1}$ Pa$^{-1}$)")
plt.ylabel("Pressure (hPa)")
plt.ylim(670, 380)
plt.legend(loc = 'lower right', frameon = False)
ax = plt.gca()
ax.tick_params(direction='out', right=False, top = False)
ax.spines['right'].set_visible(False)
ax.spines['top'].set_visible(False)
plt.subplots_adjust(bottom = 0.15, left = 0.125)
plt.savefig('../output/Stansifer_Fig2.png')
plt.savefig('../output/Stansifer_Fig2.ps', format='ps')
plt.savefig('../output/Stansifer_Fig2.eps', format='eps')
plt.savefig('../output/Stansifer_Fig2.pdf', format='pdf')
plt.close()
def h_dp(self, j, k):
return thermo.enthalpy_dp(self.y[j], self.p[k], self.s[j])
