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fix units for heat transports #281

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Jul 23, 2019
Merged

fix units for heat transports #281

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14 changes: 8 additions & 6 deletions tools/analysis/poleward_heat_transport.py
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Original file line number Diff line number Diff line change
Expand Up @@ -47,7 +47,7 @@ def main(cmdLineArgs,stream=False):
try: basin_code = m6toolbox.readNCFromTar(cmdLineArgs.gridspec,'basin_codes.nc','basin')[:]
except: basin_code = m6toolbox.genBasinMasks(xcenter, ycenter, depth)
else:
raise ValueError('Unable to extract grid information from gridspec directory/tar file.')
raise ValueError('Unable to extract grid information from gridspec directory/tar file.')

rootGroup = netCDF4.MFDataset( cmdLineArgs.infile )
if 'T_ady_2d' in rootGroup.variables:
Expand All @@ -60,7 +60,7 @@ def main(cmdLineArgs,stream=False):
if 'T_diffy_2d' in rootGroup.variables:
varName = 'T_diffy_2d'
diffusive = rootGroup.variables[varName][:].filled(0.)
else:
else:
diffusive = None
warnings.warn('Diffusive temperature term not found. This will result in an underestimation of the heat transport.')

Expand All @@ -77,7 +77,9 @@ def heatTrans(advective, diffusive=None, vmask=None):
Cp = 3989.
HT = HT * (rho0 * Cp)
HT = HT * 1.e-15 # convert to PW
elif advective.units == "W m-2":
elif advective.units == "W m-2": # bug in MOM6 units (issue #934), keep for retrocompatibility
HT = HT * 1.e-15
elif advective.units == "W":
HT = HT * 1.e-15
else:
print('Unknown units')
Expand All @@ -96,7 +98,7 @@ def annotatePlot(label):
fig = plt.gcf()
#fig.text(0.1,0.85,label)
fig.text(0.535,0.12,label)

def annotateObs():
fig = plt.gcf()
fig.text(0.1,0.85,r"Trenberth, K. E. and J. M. Caron, 2001: Estimates of Meridional Atmosphere and Ocean Heat Transports. J.Climate, 14, 3433-3443.", fontsize=8)
Expand All @@ -113,7 +115,7 @@ def annotateObs():
ECMWF = {}; ECMWF['Global'] = fObs.variables['OTe'][:]
ECMWF['Atlantic'] = fObs.variables['ATLe'][:]; ECMWF['IndoPac'] = fObs.variables['INDPACe'][:]

#G and W
#G and W
Global = {}
Global['lat'] = numpy.array([-30., -19., 24., 47.])
Global['trans'] = numpy.array([-0.6, -0.8, 1.8, 0.6])
Expand Down Expand Up @@ -208,6 +210,6 @@ def plotGandW(lat,trans,err):

if stream is True:
return imgbufs

if __name__ == '__main__':
run()