Commit 34b5094e authored by brunner's avatar brunner
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parent f15d9a52
import sys
import numpy as np
from netCDF4 import Dataset
half_a=(0,7.367743,210.39389,855.361755,2063.779785,3850.91333,6144.314941,8802.356445,11632.75879,14411.12402,16899.46875,18864.75,20097.40234,20429.86328,19755.10938,18045.18359,15379.80566,12077.44629,8765.053711,6018.019531,3960.291504,1680.640259,713.218079,298.495789,95.636963,0)
half_b=(1,0.99401945,0.97966272,0.95182151,0.90788388,0.84737492,0.77159661,0.68326861,0.58616841,0.48477158,0.38389215,0.28832296,0.2024759,0.13002251,0.07353383,0.03412116,0.01114291,0.00181516,0.00007582,0,0,0,0,0,0,0)
date=str(sys.argv[1])
ifile = Dataset('CT2016.molefrac_glb3x2_'+date[:4]+'-'+date[4:6]+'-'+date[6:8]+'.nc', mode='r')
levs = ifile.variables['level'][:]
lats = ifile.variables['latitude'][:]
lons = ifile.variables['longitude'][:]
co2 = np.squeeze(ifile.variables['co2'][:])
p_bound = np.squeeze(ifile.variables['pressure'][:])
ifile.close()
lats_tf=(lats<=63.)&(lats>=35.)
lons_tf=(lons<=34.5)&(lons>=-10.5)
lats=lats[np.logical_and(lats>=35.,lats<=63.)]
lons=lons[np.logical_and(lons>=-10.5,lons<=34.5)]
co2=co2[:,:,lats_tf,:][:,:,:,lons_tf]*0.04401/0.02896 # * mmCO2/mmAir
p_bound=p_bound[:,:,lats_tf,:][:,:,:,lons_tf]
p=np.empty(shape=(8,25,15,16))
for i in range(0,24):
p[:,i,:,:]=(p_bound[:,i,:,:]+p_bound[:,i+1,:,:])/2.
sp=np.squeeze(p[:,0,:,:])
hyam=np.empty(25)
hybm=np.empty(25)
for i in range(0,25):
hyam[i]=(half_a[i]+half_a[i+1])/2.
hybm[i]=(half_b[i]+half_b[i+1])/2.
ttt=("00","03","06","09","12","15","18","21")
for ti,tt in enumerate(ttt):
ofile = Dataset(sys.argv[2]+'/ct_'+date[:4]+date[4:6]+date[6:8]+tt+'.nc', mode='w')
olev = ofile.createDimension('level', len(levs))
olat = ofile.createDimension('lat', len(lats))
olon = ofile.createDimension('lon', len(lons))
odate = ofile.createDimension('date', 1)
olat = ofile.createVariable('lat', np.float64, ('lat',))
olon = ofile.createVariable('lon', np.float64, ('lon',))
olev = ofile.createVariable('level', np.float64, ('level',))
otime = ofile.createVariable('time', np.float64, ('date',))
odate = ofile.createVariable('date', np.float64, ('date',))
ohyam = ofile.createVariable('hyam', np.float32, ('level',))
ohybm = ofile.createVariable('hybm', np.float32, ('level',))
oco2 = ofile.createVariable('CO2_BG', np.float32, ('date','level','lat','lon'),fill_value=-999.99)
op = ofile.createVariable('pressure', np.float32, ('date','level','lat','lon'),fill_value=-999.99)
osp = ofile.createVariable('PSURF', np.float32, ('date','lat','lon'),fill_value=-999.99)
op0 = ofile.createVariable('P0', np.float32, ('date'),fill_value=-999.99)
odate.comment = 'time-interval average, centered on times in the date axis'
odate.long_name = 'UTC dates and times'
odate.units = 'days since '+date[:4]+'-'+date[4:6]+'-'+date[6:8]+' 00:00:00'
# otime.dtype = 'double'
otime.units = 'seconds since '+date[:4]+'-'+date[4:6]+'-'+date[6:8]+' 00:00:00'
otime.calendar = 'proleptic_gregorian'
olat.standard_name = 'latitude'
olat.long_name = 'latitude'
olat.units = 'degree_north'
olat.axis = 'Y'
olon.standard_name = 'longitude'
olon.long_name = 'longitude'
olon.units = 'degree_east'
olon.axis = 'X'
ohyam.long_name = 'hybrid A coefficient at layer midpoints'
ohyam.units = 'Pa'
ohybm.long_name = 'hybrid B coefficient at layer midpoints'
ohybm.units = '1'
olev.positive = 'up'
olev.units = 'levels'
oco2.standard_name = 'mass_fraction_of_carbon_dioxide_in_air'
oco2.long_name = 'mass mixing ratio of CO2 from outside Europe'
oco2.units = 'kg kg-1'
op.long_name = 'pressure_at_center_levels'
op.units = 'Pa'
op.standard_name = 'air pressure'
op0.units = 'Pa'
osp.cell_methods = 'level:mean'
osp.units = 'Pa'
osp.long_name = 'surface pressure'
osp.table = '128'
osp.lev = '1'
olat[:] = lats
olon[:] = lons
olev[:] = levs
odate[:] = 3.*ti/24.
otime[:] = ti*3*3600
oco2[:] = co2[ti,:]
osp[:] = sp[ti,:]
op[:] = p[ti,:]
op0[:] = 1.
ohyam[:] = hyam
ohybm[:] = hybm
ofile.close()
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