def test_albedo_parameterisation():
albedo = updateAlbedo(GRID,3600)
assert albedo >= albedo_firn and albedo <= albedo_fresh_snow
albedo = updateAlbedo(GRID_ice,3600)
assert albedo == albedo_ice
def cosipy_core(DATA,
indY,
indX,
GRID_RESTART=None,
stake_names=None,
stake_data=None):
""" Cosipy core function, which perform the calculations on one core.
Params
======
DATA: xarray.Dataset
xarray dataset which contain one grid point
indY:
indX:
GRID_RESTART : boolean, optional
If restart is given, no inital profile is created
stake_name : boolean, optional
stake names
stake_data : boolean, optional
stake data
Returns
======
Returns all calculated variables of one grid point
"""
# Replace values from constants.py if coupled
from constants import max_layers, dt, z #WTF python!
if WRF_X_CSPY:
dt = int(DATA.DT.values)
max_layers = int(DATA.max_layers.values)
z = float(DATA.ZLVL.values)
# Local variables
nt = len(DATA.time.values) #accessing DATA is expensive
_RRR = np.full(nt, np.nan)
_RAIN = np.full(nt, np.nan)
_SNOWFALL = np.full(nt, np.nan)
_LWin = np.full(nt, np.nan)
_LWout = np.full(nt, np.nan)
_H = np.full(nt, np.nan)
_LE = np.full(nt, np.nan)
_B = np.full(nt, np.nan)
_QRR = np.full(nt, np.nan)
_MB = np.full(nt, np.nan)
_surfMB = np.full(nt, np.nan)
_MB = np.full(nt, np.nan)
_Q = np.full(nt, np.nan)
_SNOWHEIGHT = np.full(nt, np.nan)
_TOTALHEIGHT = np.full(nt, np.nan)
_TS = np.full(nt, np.nan)
_ALBEDO = np.full(nt, np.nan)
_ME = np.full(nt, np.nan)
_intMB = np.full(nt, np.nan)
_EVAPORATION = np.full(nt, np.nan)
_SUBLIMATION = np.full(nt, np.nan)
_CONDENSATION = np.full(nt, np.nan)
_DEPOSITION = np.full(nt, np.nan)
_REFREEZE = np.full(nt, np.nan)
_NLAYERS = np.full(nt, np.nan)
_subM = np.full(nt, np.nan)
_Z0 = np.full(nt, np.nan)
_surfM = np.full(nt, np.nan)
_MOL = np.full(nt, np.nan)
_LAYER_HEIGHT = np.full((nt, max_layers), np.nan)
_LAYER_RHO = np.full((nt, max_layers), np.nan)
_LAYER_T = np.full((nt, max_layers), np.nan)
_LAYER_LWC = np.full((nt, max_layers), np.nan)
_LAYER_CC = np.full((nt, max_layers), np.nan)
_LAYER_POROSITY = np.full((nt, max_layers), np.nan)
_LAYER_ICE_FRACTION = np.full((nt, max_layers), np.nan)
_LAYER_IRREDUCIBLE_WATER = np.full((nt, max_layers), np.nan)
_LAYER_REFREEZE = np.full((nt, max_layers), np.nan)
#--------------------------------------------
# Initialize snowpack or load restart grid
#--------------------------------------------
if GRID_RESTART is None:
GRID = init_snowpack(DATA)
else:
GRID = load_snowpack(GRID_RESTART)
# Create the local output datasets if not coupled
RESTART = None
if not WRF_X_CSPY:
IO = IOClass(DATA)
RESTART = IO.create_local_restart_dataset()
# hours since the last snowfall (albedo module)
hours_since_snowfall = 0
#--------------------------------------------
# Get data from file
#--------------------------------------------
T2 = DATA.T2.values
RH2 = DATA.RH2.values
PRES = DATA.PRES.values
G = DATA.G.values
U2 = DATA.U2.values
#--------------------------------------------
# Checks for optional input variables
#--------------------------------------------
if ('SNOWFALL' in DATA) and ('RRR' in DATA):
SNOWF = DATA.SNOWFALL.values * mult_factor_RRR
RRR = DATA.RRR.values * mult_factor_RRR
elif ('SNOWFALL' in DATA):
SNOWF = DATA.SNOWFALL.values * mult_factor_RRR
RRR = None
RAIN = None
else:
SNOWF = None
RRR = DATA.RRR.values * mult_factor_RRR
# Use RRR rather than snowfall?
if force_use_TP:
SNOWF = None
if ('LWin' in DATA) and ('N' in DATA):
LWin = DATA.LWin.values
N = DATA.N.values
elif ('LWin' in DATA):
LWin = DATA.LWin.values
else:
LWin = None
N = DATA.N.values
# Use N rather than LWin
if force_use_N:
LWin = None
if ('SLOPE' in DATA):
SLOPE = DATA.SLOPE.values
else:
SLOPE = 0.0
# Initial cumulative mass balance variable
MB_cum = 0
if stake_evaluation:
# Create pandas dataframe for stake evaluation
_df = pd.DataFrame(index=stake_data.index,
columns=['mb', 'snowheight'],
dtype='float')
#--------------------------------------------
# TIME LOOP
#--------------------------------------------
for t in np.arange(nt):
# Check grid
GRID.grid_check()
# get seconds since start
timestamp = dt * t
if WRF_X_CSPY:
timestamp = np.float64(DATA.CURR_SECS.values)
# Calc fresh snow density
if (densification_method != 'constant'):
density_fresh_snow = np.maximum(
109.0 + 6.0 * (T2[t] - 273.16) + 26.0 * np.sqrt(U2[t]), 50.0)
else:
density_fresh_snow = constant_density
# Derive snowfall [m] and rain rates [m w.e.]
if (SNOWF is not None) and (RRR is not None):
SNOWFALL = SNOWF[t]
RAIN = RRR[t] - SNOWFALL * (density_fresh_snow /
ice_density) * 1000.0
elif (SNOWF is not None):
SNOWFALL = SNOWF[t]
else:
# Else convert total precipitation [mm] to snowheight [m]; liquid/solid fraction
SNOWFALL = (RRR[t] / 1000.0) * (
ice_density / density_fresh_snow) * (0.5 * (-np.tanh(
((T2[t] - zero_temperature) - center_snow_transfer_function
) * spread_snow_transfer_function) + 1.0))
RAIN = RRR[t] - SNOWFALL * (density_fresh_snow /
ice_density) * 1000.0
# if snowfall is smaller than the threshold
if SNOWFALL < minimum_snowfall:
SNOWFALL = 0.0
# if rainfall is smaller than the threshold
if RAIN < (minimum_snowfall *
(density_fresh_snow / ice_density) * 1000.0):
RAIN = 0.0
if SNOWFALL > 0.0:
# Add a new snow node on top
GRID.add_fresh_snow(SNOWFALL, density_fresh_snow,
np.minimum(float(T2[t]), zero_temperature),
0.0)
else:
GRID.set_fresh_snow_props_update_time(dt)
# Guarantee that solar radiation is greater equal zero
if (G[t] < 0.0):
G[t] = 0.0
#--------------------------------------------
# Merge grid layers, if necessary
#--------------------------------------------
GRID.update_grid()
#--------------------------------------------
# Calculate albedo and roughness length changes if first layer is snow
#--------------------------------------------
alpha = updateAlbedo(GRID)
#--------------------------------------------
# Update roughness length
#--------------------------------------------
z0 = updateRoughness(GRID)
#--------------------------------------------
# Surface Energy Balance
#--------------------------------------------
# Calculate net shortwave radiation
SWnet = G[t] * (1 - alpha)
# Penetrating SW radiation and subsurface melt
if SWnet > 0.0:
subsurface_melt, G_penetrating = penetrating_radiation(
GRID, SWnet, dt)
else:
subsurface_melt = 0.0
G_penetrating = 0.0
# Calculate residual net shortwave radiation (penetrating part removed)
sw_radiation_net = SWnet - G_penetrating
if LWin is not None:
# Find new surface temperature (LW is used from the input file)
fun, surface_temperature, lw_radiation_in, lw_radiation_out, sensible_heat_flux, latent_heat_flux, \
ground_heat_flux, rain_heat_flux, rho, Lv, MOL, Cs_t, Cs_q, q0, q2 \
= update_surface_temperature(GRID, dt, z, z0, T2[t], RH2[t], PRES[t], sw_radiation_net, U2[t], RAIN, SLOPE, LWin=LWin[t])
else:
# Find new surface temperature (LW is parametrized using cloud fraction)
fun, surface_temperature, lw_radiation_in, lw_radiation_out, sensible_heat_flux, latent_heat_flux, \
ground_heat_flux, rain_heat_flux, rho, Lv, MOL, Cs_t, Cs_q, q0, q2 \
= update_surface_temperature(GRID, dt, z, z0, T2[t], RH2[t], PRES[t], sw_radiation_net, U2[t], RAIN, SLOPE, N=N[t])
#--------------------------------------------
# Surface mass fluxes [m w.e.q.]
#--------------------------------------------
if surface_temperature < zero_temperature:
sublimation = min(
latent_heat_flux /
(water_density * lat_heat_sublimation), 0) * dt
deposition = max(
latent_heat_flux /
(water_density * lat_heat_sublimation), 0) * dt
evaporation = 0
condensation = 0
else:
sublimation = 0
deposition = 0
evaporation = min(
latent_heat_flux / (water_density * lat_heat_vaporize), 0) * dt
condensation = max(
latent_heat_flux / (water_density * lat_heat_vaporize), 0) * dt
#--------------------------------------------
# Melt process - mass changes of snowpack (melting, sublimation, deposition, evaporation, condensation)
#--------------------------------------------
# Melt energy in [W m^-2 or J s^-1 m^-2]
melt_energy = max(
0, sw_radiation_net + lw_radiation_in + lw_radiation_out +
ground_heat_flux + rain_heat_flux + sensible_heat_flux +
latent_heat_flux)
# Convert melt energy to m w.e.q.
melt = melt_energy * dt / (1000 * lat_heat_melting)
# Remove melt [m w.e.q.]
lwc_from_melted_layers = GRID.remove_melt_weq(melt - sublimation -
deposition)
#--------------------------------------------
# Percolation
#--------------------------------------------
Q = percolation(
GRID, melt + condensation + RAIN / 1000.0 + lwc_from_melted_layers,
dt)
#--------------------------------------------
# Refreezing
#--------------------------------------------
water_refreezed = refreezing(GRID)
#--------------------------------------------
# Solve the heat equation
#--------------------------------------------
solveHeatEquation(GRID, dt)
#--------------------------------------------
# Calculate new density to densification
#--------------------------------------------
densification(GRID, SLOPE, dt)
#--------------------------------------------
# Calculate mass balance
#--------------------------------------------
surface_mass_balance = SNOWFALL * (
density_fresh_snow /
ice_density) - melt + sublimation + deposition + evaporation
internal_mass_balance = water_refreezed - subsurface_melt
mass_balance = surface_mass_balance + internal_mass_balance
internal_mass_balance2 = melt - Q + subsurface_melt
mass_balance_check = surface_mass_balance + internal_mass_balance2
# Cumulative mass balance for stake evaluation
MB_cum = MB_cum + mass_balance
# Store cumulative MB in pandas frame for validation
if stake_names:
if (DATA.isel(time=t).time.values in stake_data.index):
_df['mb'].loc[DATA.isel(time=t).time.values] = MB_cum
_df['snowheight'].loc[DATA.isel(
time=t).time.values] = GRID.get_total_snowheight()
# Save results
_RAIN[t] = RAIN
_SNOWFALL[t] = SNOWFALL * (density_fresh_snow / ice_density)
_LWin[t] = lw_radiation_in
_LWout[t] = lw_radiation_out
_H[t] = sensible_heat_flux
_LE[t] = latent_heat_flux
_B[t] = ground_heat_flux
_QRR[t] = rain_heat_flux
_MB[t] = mass_balance
_surfMB[t] = surface_mass_balance
_Q[t] = Q
_SNOWHEIGHT[t] = GRID.get_total_snowheight()
_TOTALHEIGHT[t] = GRID.get_total_height()
_TS[t] = surface_temperature
_ALBEDO[t] = alpha
_NLAYERS[t] = GRID.get_number_layers()
_ME[t] = melt_energy
_intMB[t] = internal_mass_balance
_EVAPORATION[t] = evaporation
_SUBLIMATION[t] = sublimation
_CONDENSATION[t] = condensation
_DEPOSITION[t] = deposition
_REFREEZE[t] = water_refreezed
_subM[t] = subsurface_melt
_Z0[t] = z0
_surfM[t] = melt
_MOL[t] = MOL
if full_field:
if GRID.get_number_layers() > max_layers:
print('Maximum number of layers reached')
else:
_LAYER_HEIGHT[t,
0:GRID.get_number_layers()] = GRID.get_height()
_LAYER_RHO[t, 0:GRID.get_number_layers()] = GRID.get_density()
_LAYER_T[t,
0:GRID.get_number_layers()] = GRID.get_temperature()
_LAYER_LWC[t, 0:GRID.get_number_layers(
)] = GRID.get_liquid_water_content()
_LAYER_CC[
t, 0:GRID.get_number_layers()] = GRID.get_cold_content()
_LAYER_POROSITY[
t, 0:GRID.get_number_layers()] = GRID.get_porosity()
_LAYER_ICE_FRACTION[
t, 0:GRID.get_number_layers()] = GRID.get_ice_fraction()
_LAYER_IRREDUCIBLE_WATER[t, 0:GRID.get_number_layers(
)] = GRID.get_irreducible_water_content()
_LAYER_REFREEZE[
t, 0:GRID.get_number_layers()] = GRID.get_refreeze()
else:
_LAYER_HEIGHT = None
_LAYER_RHO = None
_LAYER_T = None
_LAYER_LWC = None
_LAYER_CC = None
_LAYER_POROSITY = None
_LAYER_ICE_FRACTION = None
_LAYER_IRREDUCIBLE_WATER = None
_LAYER_REFREEZE = None
if stake_evaluation:
# Evaluate stakes
_stat = evaluate(stake_names, stake_data, _df)
else:
_stat = None
_df = None
# Restart
if not WRF_X_CSPY:
new_snow_height, new_snow_timestamp, old_snow_timestamp = GRID.get_fresh_snow_props(
)
RESTART.NLAYERS.values[:] = GRID.get_number_layers()
RESTART.NEWSNOWHEIGHT.values[:] = new_snow_height
RESTART.NEWSNOWTIMESTAMP.values[:] = new_snow_timestamp
RESTART.OLDSNOWTIMESTAMP.values[:] = old_snow_timestamp
RESTART.LAYER_HEIGHT[0:GRID.get_number_layers()] = GRID.get_height()
RESTART.LAYER_RHO[0:GRID.get_number_layers()] = GRID.get_density()
RESTART.LAYER_T[0:GRID.get_number_layers()] = GRID.get_temperature()
RESTART.LAYER_LWC[0:GRID.get_number_layers(
)] = GRID.get_liquid_water_content()
RESTART.LAYER_IF[0:GRID.get_number_layers()] = GRID.get_ice_fraction()
return (indY,indX,RESTART,_RAIN,_SNOWFALL,_LWin,_LWout,_H,_LE,_B, _QRR, \
_MB,_surfMB,_Q,_SNOWHEIGHT,_TOTALHEIGHT,_TS,_ALBEDO,_NLAYERS, \
_ME,_intMB,_EVAPORATION,_SUBLIMATION,_CONDENSATION,_DEPOSITION,_REFREEZE, \
_subM,_Z0,_surfM, _MOL, \
_LAYER_HEIGHT,_LAYER_RHO,_LAYER_T,_LAYER_LWC,_LAYER_CC,_LAYER_POROSITY,_LAYER_ICE_FRACTION, \
_LAYER_IRREDUCIBLE_WATER,_LAYER_REFREEZE,stake_names,_stat,_df)
def cosipy_core(DATA, indY, indX, GRID_RESTART=None, stake_names=None, stake_data=None):
# Local variables
_RRR = np.full(len(DATA.time), np.nan)
_RAIN = np.full(len(DATA.time), np.nan)
_SNOWFALL = np.full(len(DATA.time), np.nan)
_LWin = np.full(len(DATA.time), np.nan)
_LWout = np.full(len(DATA.time), np.nan)
_H = np.full(len(DATA.time), np.nan)
_LE = np.full(len(DATA.time), np.nan)
_B = np.full(len(DATA.time), np.nan)
_MB = np.full(len(DATA.time), np.nan)
_surfMB = np.full(len(DATA.time), np.nan)
_MB = np.full(len(DATA.time), np.nan)
_Q = np.full(len(DATA.time), np.nan)
_SNOWHEIGHT = np.full(len(DATA.time), np.nan)
_TOTALHEIGHT = np.full(len(DATA.time), np.nan)
_TS = np.full(len(DATA.time), np.nan)
_ALBEDO = np.full(len(DATA.time), np.nan)
_ME = np.full(len(DATA.time), np.nan)
_intMB = np.full(len(DATA.time), np.nan)
_EVAPORATION = np.full(len(DATA.time), np.nan)
_SUBLIMATION = np.full(len(DATA.time), np.nan)
_CONDENSATION = np.full(len(DATA.time), np.nan)
_DEPOSITION = np.full(len(DATA.time), np.nan)
_REFREEZE = np.full(len(DATA.time), np.nan)
_NLAYERS = np.full(len(DATA.time), np.nan)
_subM = np.full(len(DATA.time), np.nan)
_Z0 = np.full(len(DATA.time), np.nan)
_surfM = np.full(len(DATA.time), np.nan)
_LAYER_HEIGHT = np.full((len(DATA.time),max_layers), np.nan)
_LAYER_RHO = np.full((len(DATA.time),max_layers), np.nan)
_LAYER_T = np.full((len(DATA.time),max_layers), np.nan)
_LAYER_LWC = np.full((len(DATA.time),max_layers), np.nan)
_LAYER_CC = np.full((len(DATA.time),max_layers), np.nan)
_LAYER_POROSITY = np.full((len(DATA.time),max_layers), np.nan)
_LAYER_ICE_FRACTION = np.full((len(DATA.time),max_layers), np.nan)
_LAYER_IRREDUCIBLE_WATER = np.full((len(DATA.time),max_layers), np.nan)
_LAYER_REFREEZE = np.full((len(DATA.time),max_layers), np.nan)
# Start logging
logger = logging.getLogger(__name__)
#--------------------------------------------
# Initialize snowpack or load restart grid
#--------------------------------------------
if GRID_RESTART is None:
GRID = init_snowpack(DATA)
else:
GRID = load_snowpack(GRID_RESTART)
# Create the local output datasets
logger.debug('Create local datasets')
IO = IOClass(DATA)
RESTART = IO.create_local_restart_dataset()
# Merge grid layers, if necessary
logger.debug('Create local datasets')
# hours since the last snowfall (albedo module)
hours_since_snowfall = 0
#--------------------------------------------
# Get data from file
#--------------------------------------------
T2 = DATA.T2.values
RH2 = DATA.RH2.values
PRES = DATA.PRES.values
G = DATA.G.values
U2 = DATA.U2.values
#--------------------------------------------
# Checks for optional input variables
#--------------------------------------------
if ('SNOWFALL' in DATA) and ('RRR' in DATA):
SNOWF = DATA.SNOWFALL.values * mult_factor_RRR
RRR = DATA.RRR.values * mult_factor_RRR
elif ('SNOWFALL' in DATA):
SNOWF = DATA.SNOWFALL.values * mult_factor_RRR
RRR = None
RAIN = None
else:
SNOWF = None
RRR = DATA.RRR.values * mult_factor_RRR
# Use RRR rather than snowfall?
if force_use_TP is True:
SNOWF = None
if ('LWin' in DATA) and ('N' in DATA):
LWin = DATA.LWin.values
N = DATA.N.values
elif ('LWin' in DATA):
LWin = DATA.LWin.values
else:
LWin = None
N = DATA.N.values
# Use N rather than LWin
if force_use_N is True:
LWin = None
if ('SLOPE' in DATA):
SLOPE = DATA.SLOPE.values
else:
SLOPE = 0.0
# Initial cumulative mass balance variable
MB_cum = 0
if stake_evaluation is True:
# Create pandas dataframe for stake evaluation
_df = pd.DataFrame(index=stake_data.index, columns=['mb','snowheight'], dtype='float')
# Profiling with bokeh
cp = cProfile.Profile()
#--------------------------------------------
# TIME LOOP
#--------------------------------------------
logger.debug('Start time loop')
for t in np.arange(len(DATA.time)):
# Check grid
GRID.grid_check()
# get seconds since start
timestamp = dt*t
# Calc fresh snow density
density_fresh_snow = np.maximum(109.0+6.0*(T2[t]-273.16)+26.0*np.sqrt(U2[t]), 50.0)
# Derive snowfall [m] and rain rates [m w.e.]
if (SNOWF is not None) and (RRR is not None):
SNOWFALL = SNOWF[t]
RAIN = RRR[t]-SNOWFALL*(density_fresh_snow/ice_density) * 1000.0
elif (SNOWF is not None):
SNOWFALL = SNOWF[t]
else:
# Else convert total precipitation [mm] to snowheight [m]; liquid/solid fraction
SNOWFALL = (RRR[t]/1000.0)*(ice_density/density_fresh_snow)*(0.5*(-np.tanh(((T2[t]-zero_temperature) - center_snow_transfer_function) * spread_snow_transfer_function) + 1.0))
RAIN = RRR[t]-SNOWFALL*(density_fresh_snow/ice_density) * 1000.0
# if snowfall is smaller than the threshold
if SNOWFALL<minimum_snow_layer_height:
SNOWFALL = 0.0
# if rainfall is smaller than the threshold
if RAIN<(minimum_snow_layer_height*(density_fresh_snow/ice_density)*1000.0):
RAIN = 0.0
if SNOWFALL > 0.0:
# Add a new snow node on top
GRID.add_fresh_snow(SNOWFALL, density_fresh_snow, np.minimum(float(T2[t]),zero_temperature), 0.0, timestamp)
# Guarantee that solar radiation is greater equal zero
if (G[t]<0.0):
G[t] = 0.0
#--------------------------------------------
# Merge grid layers, if necessary
#--------------------------------------------
GRID.update_grid()
#--------------------------------------------
# Calculate albedo and roughness length changes if first layer is snow
#--------------------------------------------
alpha = updateAlbedo(GRID, timestamp)
#--------------------------------------------
# Update roughness length
#--------------------------------------------
z0 = updateRoughness(GRID, timestamp)
#--------------------------------------------
# Surface Energy Balance
#--------------------------------------------
# Calculate net shortwave radiation
SWnet = G[t] * (1 - alpha)
# Penetrating SW radiation and subsurface melt
if SWnet > 0.0:
subsurface_melt, G_penetrating = penetrating_radiation(GRID, SWnet, dt)
else:
subsurface_melt = 0.0
G_penetrating = 0.0
# Calculate residual incoming shortwave radiation (penetrating part removed)
G_resid = G[t] - G_penetrating
if LWin is not None:
# Find new surface temperature (LW is used from the input file)
fun, surface_temperature, lw_radiation_in, lw_radiation_out, sensible_heat_flux, latent_heat_flux, \
ground_heat_flux, sw_radiation_net, rho, Lv, Cs_t, Cs_q, q0, q2, phi \
= update_surface_temperature(GRID, alpha, z0, T2[t], RH2[t], PRES[t], G_resid, U2[t], SLOPE, LWin=LWin[t])
else:
# Find new surface temperature (LW is parametrized using cloud fraction)
fun, surface_temperature, lw_radiation_in, lw_radiation_out, sensible_heat_flux, latent_heat_flux, \
ground_heat_flux, sw_radiation_net, rho, Lv, Cs_t, Cs_q, q0, q2, phi \
= update_surface_temperature(GRID, alpha, z0, T2[t], RH2[t], PRES[t], G_resid, U2[t], SLOPE, N=N[t])
#--------------------------------------------
# Surface mass fluxes [m w.e.q.]
#--------------------------------------------
if surface_temperature < zero_temperature:
sublimation = min(latent_heat_flux / (water_density * lat_heat_sublimation), 0) * dt
deposition = max(latent_heat_flux / (water_density * lat_heat_sublimation), 0) * dt
evaporation = 0
condensation = 0
else:
sublimation = 0
deposition = 0
evaporation = min(latent_heat_flux / (water_density * lat_heat_vaporize), 0) * dt
condensation = max(latent_heat_flux / (water_density * lat_heat_vaporize), 0) * dt
#--------------------------------------------
# Melt process - mass changes of snowpack (melting, sublimation, deposition, evaporation, condensation)
#--------------------------------------------
# Melt energy in [W m^-2 or J s^-1 m^-2]
melt_energy = max(0, sw_radiation_net + lw_radiation_in + lw_radiation_out + ground_heat_flux +
sensible_heat_flux + latent_heat_flux)
# Convert melt energy to m w.e.q.
melt = melt_energy * dt / (water_density * lat_heat_melting)
# Remove melt [m w.e.q.]
GRID.remove_melt_weq(melt - sublimation - deposition - evaporation)
#--------------------------------------------
# Percolation
#--------------------------------------------
Q = percolation(GRID, melt - condensation, dt)
#--------------------------------------------
# Refreezing
#--------------------------------------------
water_refreezed = refreezing(GRID)
#--------------------------------------------
# Solve the heat equation
#--------------------------------------------
solveHeatEquation(GRID, dt)
#--------------------------------------------
# Calculate new density to densification
#--------------------------------------------
densification(GRID,SLOPE)
#--------------------------------------------
# Calculate mass balance
#--------------------------------------------
surface_mass_balance = SNOWFALL * (density_fresh_snow / ice_density) - melt - sublimation - deposition - evaporation
internal_mass_balance = water_refreezed - subsurface_melt
mass_balance = surface_mass_balance + internal_mass_balance
internal_mass_balance2 = melt-Q #+ subsurface_melt
mass_balance_check = surface_mass_balance + internal_mass_balance2
#GRID.grid_check()
# Write results
logger.debug('Write data into local result structure')
# TOBI
# Cumulative mass balance for stake evaluation
MB_cum = MB_cum + mass_balance
# Store cumulative MB in pandas frame for validation
if stake_names:
if (DATA.isel(time=t).time.values in stake_data.index):
_df['mb'].loc[DATA.isel(time=t).time.values] = MB_cum
_df['snowheight'].loc[DATA.isel(time=t).time.values] = GRID.get_total_snowheight()
# Save results
_RAIN[t] = RAIN
_SNOWFALL[t] = SNOWFALL
_LWin[t] = lw_radiation_in
_LWout[t] = lw_radiation_out
_H[t] = sensible_heat_flux
_LE[t] = latent_heat_flux
_B[t] = ground_heat_flux
_MB[t] = mass_balance
_surfMB[t] = surface_mass_balance
_Q[t] = Q
_SNOWHEIGHT[t] = GRID.get_total_snowheight()
_TOTALHEIGHT[t] = GRID.get_total_height()
_TS[t] = surface_temperature
_ALBEDO[t] = alpha
_NLAYERS[t] = GRID.get_number_layers()
_ME[t] = melt_energy
_intMB[t] = internal_mass_balance
_EVAPORATION[t] = evaporation
_SUBLIMATION[t] = sublimation
_CONDENSATION[t] = condensation
_DEPOSITION[t] = deposition
_REFREEZE[t] = water_refreezed
_subM[t] = subsurface_melt
_Z0[t] = z0
_surfM[t] = melt
if full_field:
if GRID.get_number_layers()>max_layers:
logger.error('Maximum number of layers reached')
else:
_LAYER_HEIGHT[t, 0:GRID.get_number_layers()] = GRID.get_height()
_LAYER_RHO[t, 0:GRID.get_number_layers()] = GRID.get_density()
_LAYER_T[t, 0:GRID.get_number_layers()] = GRID.get_temperature()
_LAYER_LWC[t, 0:GRID.get_number_layers()] = GRID.get_liquid_water_content()
_LAYER_CC[t, 0:GRID.get_number_layers()] = GRID.get_cold_content()
_LAYER_POROSITY[t, 0:GRID.get_number_layers()] = GRID.get_porosity()
_LAYER_ICE_FRACTION[t, 0:GRID.get_number_layers()] = GRID.get_ice_fraction()
_LAYER_IRREDUCIBLE_WATER[t, 0:GRID.get_number_layers()] = GRID.get_irreducible_water_content()
_LAYER_REFREEZE[t, 0:GRID.get_number_layers()] = GRID.get_refreeze()
else:
_LAYER_HEIGHT = None
_LAYER_RHO = None
_LAYER_T = None
_LAYER_LWC = None
_LAYER_CC = None
_LAYER_POROSITY = None
_LAYER_ICE_FRACTION = None
_LAYER_IRREDUCIBLE_WATER = None
_LAYER_REFREEZE = None
if stake_evaluation is True:
# Evaluate stakes
_stat = evaluate(stake_names, stake_data, _df)
else:
_stat = None
_df = None
# Restart
logger.debug('Write restart data into local restart structure')
RESTART['NLAYERS'] = GRID.get_number_layers()
RESTART.LAYER_HEIGHT[0:GRID.get_number_layers()] = GRID.get_height()
RESTART.LAYER_RHO[0:GRID.get_number_layers()] = GRID.get_density()
RESTART.LAYER_T[0:GRID.get_number_layers()] = GRID.get_temperature()
RESTART.LAYER_LWC[0:GRID.get_number_layers()] = GRID.get_liquid_water_content()
return (indY,indX,RESTART,_RAIN,_SNOWFALL,_LWin,_LWout,_H,_LE,_B, \
_MB,_surfMB,_Q,_SNOWHEIGHT,_TOTALHEIGHT,_TS,_ALBEDO,_NLAYERS, \
_ME,_intMB,_EVAPORATION,_SUBLIMATION,_CONDENSATION,_DEPOSITION,_REFREEZE, \
_subM,_Z0,_surfM, \
_LAYER_HEIGHT,_LAYER_RHO,_LAYER_T,_LAYER_LWC,_LAYER_CC,_LAYER_POROSITY,_LAYER_ICE_FRACTION, \
_LAYER_IRREDUCIBLE_WATER,_LAYER_REFREEZE,stake_names,_stat,_df)