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Parameter lnsp is a field of logarithm of surface pressure; mfld is the fieldset to be interpolated and should be on model levels; plist is a list of pressure levels in hPa - the result will be the mfld fieldset interpolated onto these levels. Neither mfld nor plist need to be sorted.
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This is an example showing how this function can be uses:
#
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retrieve
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the
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data
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in
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model
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levels
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common_retrieve_params
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=
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(
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type
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:
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"fc",
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levtype
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:
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"ml",
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step
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:
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12,
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grid
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:
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[1.5,1.5]
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)
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tmod
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=
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retrieve(
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param
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:
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"t",
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levelist
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:
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[1,
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'to',
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91],
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common_retrieve_params)
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lnsp
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=
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retrieve(
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param
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:
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"lnsp",
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levelist
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:
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1,
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common_retrieve_params)
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#
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interpolate
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onto
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a
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list
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of
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pressure
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levels
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plevels
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=
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[1000,
...
900,
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850,
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500,
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300,
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100,
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10,
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1,
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0.1]
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tpres
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=
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mvl_ml2hPa
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(lnsp,
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tmod,
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plevels)
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number or list Anchor nearest_gridpoint nearest_gridpoint nearest_gridpoint ( fieldset,list )
number or list nearest_gridpoint ( fieldset,number,number )vector or list nearest_gridpoint ( fieldset,vector,vector )
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