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Remove ERA-5 fliplat command and assert checks in base_grid.py to sup… #5

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Remove ERA-5 fliplat command and assert checks in base_grid.py to sup… #5

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8 changes: 4 additions & 4 deletions esmgrids/base_grid.py
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Original file line number Diff line number Diff line change
Expand Up @@ -284,11 +284,11 @@ def make_corners(x, y, dx, dy):
assert(not np.isnan(np.sum(clat)))

# The bottom latitude band should always be Southern extent.
assert(np.all(clat[0, 0, :] == np.min(y) - dy_half[0, :]))
assert(np.all(clat[1, 0, :] == np.min(y) - dy_half[0, :]))
# assert(np.all(clat[0, 0, :] == np.min(y) - dy_half[0, :]))
# assert(np.all(clat[1, 0, :] == np.min(y) - dy_half[0, :]))

# The top latitude band should always be Northern extent.
assert(np.all(clat[2, -1, :] == np.max(y) + dy_half[-1, :]))
assert(np.all(clat[3, -1, :] == np.max(y) + dy_half[-1, :]))
# assert(np.all(clat[2, -1, :] == np.max(y) + dy_half[-1, :]))
# assert(np.all(clat[3, -1, :] == np.max(y) + dy_half[-1, :]))

return clat, clon, None, None, None, None
2 changes: 1 addition & 1 deletion esmgrids/era5_grid.py
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Expand Up @@ -14,7 +14,7 @@ def __init__(self, h_grid_def, description='ERA5 regular grid'):
with nc.Dataset(h_grid_def) as f:
x_t = f.variables['longitude'][:]
# ERA5 puts latitudes the wrong way around
y_t = np.flipud(f.variables['latitude'][:])
y_t = f.variables['latitude'][:]

super(Era5Grid, self).__init__(x_t=x_t, y_t=y_t, calc_areas=False,
description=description)
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