def load(self, mn=1):
""" Load mixed layer climatology for a given day"""
self.mn = mn
nc = netcdf_file(self.datadir + "/" + self.mldFile)
self.mld = gmtgrid.convert(nc.variables["mld"][self.mn - 1, self.j1 : self.j2, self.i1 : self.i2], self.gr)
self.mld[self.mld < 0] = np.nan
self.mld[self.mld > 1e4] = np.nan
def add_landmask(self):
"""Add landmask defined as 1=land 0=ocean"""
gc = pycdf.CDF(self.datadir + "/" + self.gridfile)
u = nc.var('u')[:,:,:,:1081]
msk = np.squeeze(nanmean(u,axis=0))
msk = msk*0
msk[np.isnan(msk)]=1
self.landmask = gmtgrid.convert(msk,self.gr)
def read_bin(self, filename):
""" Read binary output from Poseidon """
with open(filename) as fd:
size = np.fromfile(fd,'<i4',count=1)[0]
assert size == (self.i2+1) * (self.j2+1) * 4
data = np.fromfile(fd,'<f4',count=(self.j2+1) * (self.i2+1))
return gmtgrid.convert(
data.reshape(self.j2+1,self.i2+1), self.gr)
def load(self, mn=1):
""" Load mixed layer climatology for a given day"""
self.mn = mn
nc = netcdf_file(self.datadir + "/" + self.mldFile)
self.mld = gmtgrid.convert(
nc.variables['mld'][self.mn - 1, self.j1:self.j2, self.i1:self.i2],
self.gr)
self.mld[self.mld < 0] = np.nan
self.mld[self.mld > 1e4] = np.nan
def load(self, fld="nwnd", **kwargs):
"""Load field for a given julian date. Returns u,v, or nwnd(windnorm)"""
self._timeparams(**kwargs)
filename = os.path.join(self.datadir,
"analysis_%04i%02i%02i_v11l30flk.nc" %
(self.yr,self.mn,self.dy))
if os.path.isfile(filename):
nc = netcdf_file(filename)
else:
raise IOError, 'Error opening the windfile %s' % filename
uH = nc.variables['uwnd']
vH = nc.variables['vwnd']
uvel = self.gmt.field(uH.data.copy()) * uH.scale_factor
vvel = self.gmt.field(vH.data.copy()) * vH.scale_factor
uvel[uvel<(uH.missing_value * uH.scale_factor)] = np.nan
vvel[vvel<(vH.missing_value * vH.scale_factor)] = np.nan
if (fld=="u") | (fld=="uvel"):
self.uvel = gmtgrid.convert(np.squeeze(u), self.gr)
elif (fld=="v") | (fld=="vvel"):
self.vvel = gmtgrid.convert(np.squeeze(v), self.gr)
else:
self.nwnd = gmtgrid.convert(np.squeeze(np.sqrt(u**2 + v**2)),self.gr)
def load(self, fld="nwnd", **kwargs):
"""Load field for a given julian date. Returns u,v, or nwnd(windnorm)"""
self._timeparams(**kwargs)
filename = os.path.join(
self.datadir,
"analysis_%04i%02i%02i_v11l30flk.nc" % (self.yr, self.mn, self.dy))
if os.path.isfile(filename):
nc = netcdf_file(filename)
else:
raise IOError, 'Error opening the windfile %s' % filename
uH = nc.variables['uwnd']
vH = nc.variables['vwnd']
uvel = self.gmt.field(uH.data.copy()) * uH.scale_factor
vvel = self.gmt.field(vH.data.copy()) * vH.scale_factor
uvel[uvel < (uH.missing_value * uH.scale_factor)] = np.nan
vvel[vvel < (vH.missing_value * vH.scale_factor)] = np.nan
if (fld == "u") | (fld == "uvel"):
self.uvel = gmtgrid.convert(np.squeeze(u), self.gr)
elif (fld == "v") | (fld == "vvel"):
self.vvel = gmtgrid.convert(np.squeeze(v), self.gr)
else:
self.nwnd = gmtgrid.convert(np.squeeze(np.sqrt(u**2 + v**2)),
self.gr)
def load(self,jd):
yr = pl.num2date(jd).year
yd = int((jd - pl.date2num(dtm(yr,1,1))) * 4)
ufile = "uwnd.sig995.%04i.nc" % yr
vfile = "vwnd.sig995.%04i.nc" % yr
try:
un = pycdf.CDF(self.datadir + ufile)
except:
print 'Error opening the windfile %s' % datadir + ufile
raise
try:
vn = pycdf.CDF(self.datadir + vfile)
except:
print 'Error opening the windfile %s' % datadir + vfile
raise
u = un.var('uwnd')[yd,:,:] * 0.01 + 225.45
v = vn.var('vwnd')[yd,:,:] * 0.01 + 225.45
nwnd = gmtgrid.convert(np.sqrt(u**2 + v**2),self.gr)
nwnd[nwnd>200]=np.nan
return nwnd
def load(self, jd):
yr = pl.num2date(jd).year
yd = int((jd - pl.date2num(dtm(yr, 1, 1))) * 4)
ufile = "uwnd.sig995.%04i.nc" % yr
vfile = "vwnd.sig995.%04i.nc" % yr
try:
un = pycdf.CDF(self.datadir + ufile)
except:
print 'Error opening the windfile %s' % datadir + ufile
raise
try:
vn = pycdf.CDF(self.datadir + vfile)
except:
print 'Error opening the windfile %s' % datadir + vfile
raise
u = un.var('uwnd')[yd, :, :] * 0.01 + 225.45
v = vn.var('vwnd')[yd, :, :] * 0.01 + 225.45
nwnd = gmtgrid.convert(np.sqrt(u**2 + v**2), self.gr)
nwnd[nwnd > 200] = np.nan
return nwnd