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Dwd/wp1.3 - DWD workaround #67

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Dwd/wp1.3 - DWD workaround #67

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c8f7626
changes to treat unstructured icon grids
TobiasGoeckeDWD Jul 24, 2024
c710404
make choice of max_refinement_level_c more flexible
MeraX Aug 15, 2024
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18 changes: 15 additions & 3 deletions src/climetlab/readers/grib/codes.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
from itertools import islice

import eccodes
import gribapi.errors

from climetlab.core import Base
from climetlab.core.constants import DATETIME
Expand Down Expand Up @@ -677,9 +678,20 @@ def grid_points(self):
warnings.warn(f"ecCodes does not support rotated iterator for {self.grid_type}")
return self.grid_points_unrotated()

data = self.data
lat = np.array([d["lat"] for d in data])
lon = np.array([d["lon"] for d in data])
#FIXME: hack to read ICON data lat lons
try:
data = self.data
lat = np.array([d["lat"] for d in data])
lon = np.array([d["lon"] for d in data])
except gribapi.errors.FunctionNotImplementedError:
import netCDF4
numberOfGridUsed = eccodes.codes_get_long(self.handle.handle, "numberOfGridUsed")
assert numberOfGridUsed // 10 == 26, "Only original grid 26 is implemented in CliMetLab"
nc = netCDF4.Dataset("/hpc/uwork/tgoecke/Projects/AICON/aicon-graph/swift.dkrz.de/cicd_data_aicon_graph/icon_grid_0026_R03B07_G.nc")
refinement_level_c = nc.variables["refinement_level_c"][:]
max_refinement_level_c = numberOfGridUsed % 10
lat = np.rad2deg(nc.variables["clat"][:])[refinement_level_c <= max_refinement_level_c]
lon = np.rad2deg(nc.variables["clon"][:])[refinement_level_c <= max_refinement_level_c]

lon[lon >= 360] -= 360

Expand Down