def setgeo(rundata):
#-------------------
"""
Set GeoClaw specific runtime parameters.
For documentation see ....
"""
try:
geo_data = rundata.geo_data
except:
print("*** Error, this rundata has no geo_data attribute")
raise AttributeError("Missing geo_data attribute")
# == Physics ==
geo_data.gravity = 9.81
geo_data.coordinate_system = 1
geo_data.earth_radius = 6367.5e3
geo_data.rho = [1025.0 * 0.9, 1025.0]
geo_data.rho_air = 1.15
geo_data.ambient_pressure = 101.3e3
# == Forcing Options
geo_data.coriolis_forcing = True
geo_data.theta_0 = 25.0 # Beta-plane approximation center
geo_data.friction_forcing = True
geo_data.friction_depth = 1e10
# == Algorithm and Initial Conditions ==
geo_data.sea_level = 0.0
geo_data.dry_tolerance = 1.e-2
# Refinement settings
refine_data = rundata.refinement_data
refine_data.wave_tolerance = 1.0
refine_data.speed_tolerance = [1.0, 2.0, 3.0, 4.0]
refine_data.deep_depth = 300.0
refine_data.max_level_deep = 4
refine_data.variable_dt_refinement_ratios = True
# == settopo.data values ==
topo_data = rundata.topo_data
# for topography, append lines of the form
# [topotype, minlevel, maxlevel, t1, t2, fname]
topo_data.topofiles.append([2, 1, 5, -RAMP_UP_TIME, 1e10, 'topo.tt2'])
# == setdtopo.data values ==
dtopo_data = rundata.dtopo_data
# for moving topography, append lines of the form : (<= 1 allowed for now!)
# [topotype, minlevel,maxlevel,fname]
# ================
# Set Surge Data
# ================
data = rundata.surge_data
# Source term controls
data.wind_forcing = True
data.drag_law = 1
data.pressure_forcing = True
data.wind_index = 2
data.pressure_index = 4
data.display_landfall_time = True
# AMR parameters, m/s and m respectively
data.wind_refine = [20.0, 40.0, 60.0]
data.R_refine = [60.0e3, 40e3, 20e3]
# Storm parameters - Parameterized storm (Holland 1980)
data.storm_specification_type = 'holland80' # (type 1)
data.storm_file = os.path.expandvars(
os.path.join(os.getcwd(), 'fake.storm'))
# Contruct storm
forward_velocity = units.convert(20, 'km/h', 'm/s')
theta = 0.0 * numpy.pi / 180.0 # degrees from horizontal to radians
my_storm = Storm()
# Take seconds and time period of 30 minutes and turn them into datatimes
t_ref = datetime.datetime.now()
t_sec = numpy.arange(-RAMP_UP_TIME, rundata.clawdata.tfinal, 30.0 * 60.0)
my_storm.t = [t_ref + datetime.timedelta(seconds=t) for t in t_sec]
ramp_func = lambda t: (t + (2 * RAMP_UP_TIME)) * (t < 0) / (2 * RAMP_UP_TIME) \
+ numpy.ones(t_sec.shape) * (t >= 0)
my_storm.time_offset = t_ref
my_storm.eye_location = numpy.empty((t_sec.shape[0], 2))
my_storm.eye_location[:, 0] = forward_velocity * t_sec * numpy.cos(theta)
my_storm.eye_location[:, 1] = forward_velocity * t_sec * numpy.sin(theta)
my_storm.max_wind_speed = units.convert(56, 'knots',
'm/s') * ramp_func(t_sec)
my_storm.central_pressure = units.convert(1024, "mbar", "Pa") \
- (units.convert(1024, "mbar", "Pa") \
- units.convert(950, 'mbar', 'Pa')) \
* ramp_func(t_sec)
my_storm.max_wind_radius = [units.convert(8, 'km', 'm')] * t_sec.shape[0]
my_storm.storm_radius = [units.convert(100, 'km', 'm')] * t_sec.shape[0]
my_storm.write(data.storm_file, file_format="geoclaw")
# ======================
# Multi-layer settings
# ======================
data = rundata.multilayer_data
# Physics parameters
data.num_layers = 2
data.eta = [0.0, -300.0]
# Algorithm parameters
data.eigen_method = 2
data.inundation_method = 2
data.richardson_tolerance = 1e10
data.wave_tolerance = [0.1, 0.5]
data.layer_index = 1
# =======================
# Set Variable Friction
# =======================
data = rundata.friction_data
# Variable friction
data.variable_friction = False
data.friction_index = 1
return rundata
def setgeo(rundata):
"""
Set GeoClaw specific runtime parameters.
For documentation see ....
"""
geo_data = rundata.geo_data
# == Physics ==
geo_data.gravity = 9.81
geo_data.coordinate_system = 1
geo_data.earth_radius = 6367.5e3
geo_data.rho = 1025.0
geo_data.rho_air = 1.15
geo_data.ambient_pressure = 101.3e3
# == Forcing Options
geo_data.coriolis_forcing = True
geo_data.theta_0 = 25.0 # Beta-plane approximation center
geo_data.friction_forcing = True
geo_data.friction_depth = 1e10
# == Algorithm and Initial Conditions ==
# Due to seasonal swelling of gulf we set sea level higher
geo_data.sea_level = 0.0
geo_data.dry_tolerance = 1.e-2
# Refinement Criteria
refine_data = rundata.refinement_data
refine_data.wave_tolerance = 1.0
refine_data.speed_tolerance = [1.0, 2.0, 3.0, 4.0]
refine_data.variable_dt_refinement_ratios = True
# == settopo.data values ==
topo_data = rundata.topo_data
topo_data.topofiles = []
# for topography, append lines of the form
# [topotype, fname]
topo_data.topofiles.append([2, 'topo.tt2'])
# == setfixedgrids.data values ==
rundata.fixed_grid_data.fixedgrids = []
# for fixed grids append lines of the form
# [t1,t2,noutput,x1,x2,y1,y2,xpoints,ypoints,\
# ioutarrivaltimes,ioutsurfacemax]
# ================
# Set Surge Data
# ================
data = rundata.surge_data
# Source term controls
data.wind_forcing = True
data.drag_law = 1
data.pressure_forcing = True
data.wind_index = 2
data.pressure_index = 4
data.display_landfall_time = True
# AMR parameters, m/s and m respectively
data.wind_refine = [20.0, 40.0, 60.0]
data.R_refine = [60.0e3, 40e3, 20e3]
# Storm parameters - Parameterized storm (Holland 1980)
data.storm_specification_type = 'holland80' # (type 1)
data.storm_file = os.path.expandvars(os.path.join(os.getcwd(),
'fake.storm'))
# Contruct storm
forward_velocity = units.convert(20, 'km/h', 'm/s')
theta = 0.0 * numpy.pi / 180.0 # degrees from horizontal to radians
my_storm = Storm()
# Take seconds and time period of 30 minutes and turn them into datatimes
t_ref = datetime.datetime.now()
t_sec = numpy.arange(-RAMP_UP_TIME, rundata.clawdata.tfinal, 30.0 * 60.0)
my_storm.t = [t_ref + datetime.timedelta(seconds=t) for t in t_sec]
ramp_func = lambda t: (t + (2 * RAMP_UP_TIME)) * (t < 0) / (2 * RAMP_UP_TIME) \
+ numpy.ones(t_sec.shape) * (t >= 0)
my_storm.time_offset = t_ref
my_storm.eye_location = numpy.empty((t_sec.shape[0], 2))
my_storm.eye_location[:, 0] = forward_velocity * t_sec * numpy.cos(theta)
my_storm.eye_location[:, 1] = forward_velocity * t_sec * numpy.sin(theta)
my_storm.max_wind_speed = units.convert(56, 'knots', 'm/s') * ramp_func(t_sec)
my_storm.central_pressure = units.convert(1024, "mbar", "Pa") \
- (units.convert(1024, "mbar", "Pa") \
- units.convert(950, 'mbar', 'Pa')) \
* ramp_func(t_sec)
my_storm.max_wind_radius = [units.convert(8, 'km', 'm')] * t_sec.shape[0]
my_storm.storm_radius = [units.convert(100, 'km', 'm')] * t_sec.shape[0]
my_storm.write(data.storm_file, file_format="geoclaw")
# =======================
# Set Variable Friction
# =======================
data = rundata.friction_data
# Variable friction
data.variable_friction = False
data.friction_index = 1
return rundata
def load_emanuel_storms(path,
mask_distance=None,
mask_coordinate=(0.0, 0.0),
mask_category=None,
categorization="NHC"):
r"""Load storms from a Matlab file containing storms
This format is based on the format Prof. Emmanuel uses to generate storms.
:Input:
- *path* (string) Path to the file to be read in
- *mask_distance* (float) Distance from *mask_coordinate* at which a storm
needs to in order to be returned in the list of storms. If
*mask_distance* is *None* then no masking is used. Default is to
use no *mask_distance*.
- *mask_coordinate* (tuple) Longitude and latitude coordinates to measure
the distance from. Default is *(0.0, 0.0)*.
- *mask_category* (int) Category or highter a storm needs to be to be
included in the returned list of storms. If *mask_category* is *None*
then no masking occurs. The categorization used is controlled by
*categorization*. Default is to use no *mask_category*.
- *categorization* (string) Categorization to be used for the
*mask_category* filter. Default is "NHC".
:Output:
- (list) List of Storm objects that have been read in and were not
filtered out.
"""
# Load the mat file and extract pertinent data
import scipy.io
mat = scipy.io.loadmat(path)
lon = mat['longstore']
lat = mat['latstore']
hour = mat['hourstore']
day = mat['daystore']
month = mat['monthstore']
year = mat['yearstore']
max_wind_radius = mat['rmstore']
max_wind_speed = mat['vstore']
central_pressure = mat['pstore']
# Convert into storms and truncate zeros
storms = []
for n in range(lon.shape[0]):
m = len(lon[n].nonzero()[0])
storm = Storm()
storm.ID = n
storm.t = [
datetime.datetime(year[0, n], month[n, i], day[n, i], hour[n, i])
for i in range(m)
]
storm.time_offset = storm.t[0]
storm.eye_location = numpy.empty((m, 2))
storm.max_wind_speed = numpy.empty(m)
storm.max_wind_radius = numpy.empty(m)
storm.central_pressure = numpy.empty(m)
storm.eye_location[:, 0] = lon[n, :m]
storm.eye_location[:, 1] = lat[n, :m]
storm.max_wind_speed = max_wind_speed[n, :m]
storm.max_wind_speed = units.convert(max_wind_speed[n, :m], 'knots',
'm/s')
storm.max_wind_radius = units.convert(max_wind_radius[n, :m], 'km',
'm')
storm.central_pressure = units.convert(central_pressure[n, :m], 'hPa',
'Pa')
storm.storm_radius = numpy.ones(m) * 300e3
include_storm = True
if mask_distance is not None:
distance = numpy.sqrt((storm.eye_location[:, 0] - \
mask_coordinate[0])**2 + (storm.eye_location[:, 1] - \
mask_coordinate[1])**2)
inlcude_storm = numpy.any(distance < mask_distance)
if mask_category is not None:
category = storm.category(categorization=categorization)
include_storm = numpy.any(category > mask_category)
if include_storm:
storms.append(storm)
#print("Length of storms:", len(storms))
return storms