[Ncep.list.wwatch3.discussion-group] Open boundary conditions for unstructured grids
Jin Liu
jinliuprc at gmail.com
Sun Dec 27 12:58:15 UTC 2020
Hello everyone,
I hope this email finds you well. Recently, I wrote the open
boundary conditions (netcdf format) for my unstructured grids (generated by
OceanMesh2D) in the WW3 model. When running the model with all 170 open
boundary points in one file, it shows 'Writing boundary data for time:
20180101 0 at 1 points. Max.: 5.7379'. I think there is something wrong
with it as I have 170 open boundary points rather than 1, and the WW3
results show the weird same wave heights along the open boundaries as well
(attached). However, if I separate the spectral file into individual files
with each one corresponding to one point (170 points corresponds to 170
open boundary files), the model works fine (it shows 'Writing boundary data
for time: 20180101 0 at 170 points. Max.: 6.3766'). I was wondering if
there is anyone who can help me fix this issue so that I can input all the
boundary points with one file? Many thanks.
If you have any comments or suggestions, please kindly let me know. Many
thanks.
Kind regards,
Jin
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Source:
ww3_spec_2018.nc
Format:
netcdf4
Global Attributes:
product_name = 'ww3_spec_2018.nc'
area = 'Coastal regions off Victoria, Australia'
data_type = 'OCO spectra 2D'
format_version = '1.1'
southernmost_latitude = 'n/a'
northernmost_latitude = 'n/a'
latitude_resolution = 'n/a'
westernmost_longitude = 'n/a'
easternmost_longitude = 'n/a'
longitude_resolution = 'n/a'
minimum_altitude = 'n/a'
maximum_altitude = 'n/a'
altitude_resolution = 'n/a'
start_date = '2018-01-01 00:00:00'
stop_date = '2018-12-31 23:00:00'
field_type = 'hourly'
Dimensions:
time = 8760
station = 170
string16 = 16
frequency = 35
direction = 36
Variables:
time
Size: 8760x1
Dimensions: time
Datatype: double
Attributes:
long_name = 'julian day (UT)'
standard_name = 'time'
calendar = 'standard'
units = 'days since 1990-01-01 00:00:00'
conventions = 'relative julian days with decimal part (as parts of the day)'
axis = 'T'
station
Size: 170x1
Dimensions: station
Datatype: int32
Attributes:
_FillValue = -2147483647
long_name = 'satation id'
axis = 'X'
string16
Size: 16x1
Dimensions: string16
Datatype: int32
Attributes:
_FillValue = -2147483647
long_name = 'station_name number of characters'
axis = 'W'
station_name
Size: 16x170
Dimensions: string16,station
Datatype: char
Attributes:
long_name = 'station name'
content = 'XW'
associates = 'station string16'
longitude
Size: 170x8760
Dimensions: station,time
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'longitude'
standard_name = 'longitude'
globwave_name = 'longitude'
units = 'degree_east'
scale_factor = 1
add_offset = 0
valid_min = -180
valid_max = 360
content = 'TX'
associates = 'time station'
latitude
Size: 170x8760
Dimensions: station,time
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'latitude'
standard_name = 'latitude'
globwave_name = 'latitude'
units = 'degree_north'
scale_factor = 1
add_offset = 0
valid_min = -90
valid_max = 180
content = 'TX'
associates = 'time station'
frequency
Size: 35x1
Dimensions: frequency
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'frequency of center band'
standard_name = 'sea_surface_wave_frequency'
globwave_name = 'frequency'
units = 's-1'
scale_factor = 1
add_offset = 0
valid_min = 0
valid_max = 10
axis = 'Y'
frequency1
Size: 35x1
Dimensions: frequency
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'frequency of lower band'
standard_name = 'frequency_of_lower_band'
globwave_name = 'frequency_lower_band'
units = 's-1'
scale_factor = 1
add_offset = 0
valid_min = 0
valid_max = 10
content = 'Y'
associates = 'frequency'
frequency2
Size: 35x1
Dimensions: frequency
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'frequency of upper band'
standard_name = 'frequency_of_upper_band'
globwave_name = 'frequency_upper_band'
units = 's-1'
scale_factor = 1
add_offset = 0
valid_min = 0
valid_max = 10
content = 'Y'
associates = 'frequency'
direction
Size: 36x1
Dimensions: direction
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'sea surface wave to direction'
standard_name = 'sea_surface_wave_to_direction'
globwave_name = 'direction'
units = 'degree'
scale_factor = 1
add_offset = 0
valid_min = 0
valid_max = 360
axis = 'Z'
efth
Size: 36x35x170x8760
Dimensions: direction,frequency,station,time
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'sea surface wave directional variance spectral density'
standard_name = 'sea_surface_wave_directional_variance_spectral_density'
globwave_name = 'directional_variance_spectral_density'
units = 'm2 s rad-1'
scale_factor = 1
add_offset = 0
valid_min = 0
valid_max = 1.000000020040877e+20
content = 'TXYZ'
associates = 'time station frequency direction'
dpt
Size: 170x8760
Dimensions: station,time
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'depth'
standard_name = 'depth'
globwave_name = 'depth'
units = 'm'
scale_factor = 1
add_offset = 0
valid_min = -100
valid_max = 10000
content = 'TX'
associates = 'time station'
wnd
Size: 170x8760
Dimensions: station,time
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'wind speed at 10 m'
standard_name = 'wind_speed'
globwave_name = 'wind_speed'
units = 'm s-1'
scale_factor = 1
add_offset = 0
valid_min = 0
valid_max = 100
content = 'TX'
associates = 'time station'
wnddir
Size: 170x8760
Dimensions: station,time
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'wind direction'
standard_name = 'wind_from_direction'
globwave_name = 'wind_from_direction'
units = 'degree'
scale_factor = 1
add_offset = 0
valid_min = 0
valid_max = 360
content = 'TX'
associates = 'time station'
cur
Size: 170x8760
Dimensions: station,time
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'sea water speed'
standard_name = 'sea_water_speed'
globwave_name = 'sea_water_speed'
units = 'm s-1'
scale_factor = 1
add_offset = 0
valid_min = 0
valid_max = 100
content = 'TX'
associates = 'time station'
curdir
Size: 170x8760
Dimensions: station,time
Datatype: single
Attributes:
_FillValue = 9.969209968386869e+36
long_name = 'direction from of sea water velocity'
standard_name = 'direction_of_sea_water_velocity'
globwave_name = 'direction_of_sea_water_velocity'
units = 'degree'
scale_factor = 1
add_offset = 0
valid_min = 0
valid_max = 360
content = 'TX'
associates = 'time station'
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