[ncl-talk] CNL read CALIPSO v4.51 data

Zhifeng Yang yangzf01 at gmail.com
Thu Sep 4 14:36:44 MDT 2025


Hi all,

I am using NCL 6.6.2 to read CALIPSO latitude, longitude, and
Feature_Classification_Flags variable from CAL_LID_L2_VFM-Standard-V4-51.

  fh =
addfile("CAL_LID_L2_VFM-Standard-V4-51.2017-08-21T14-00-11ZD.hdf","r")
   lath      = fh->Latitude(:, 0)
   lonh      = fh->Longitude(:, 0)
   vfmh      = fh->Feature_Classification_Flags

However, I got the error below
fatal:HDF: An error occurred while attempting to read variable
(Feature_Classification_Flags) from file
(/glade/derecho/scratch/zhifengy/data/experiment_input/doe_cloud_africa/CALIPSO/CAL_LID_L2_VFM-Standard-V4-51/test/CAL_LID_L2_VFM-Standard-V4-51.2017-08-21T14-00-11ZD.hdf)

Do you have any idea about this? Thanks,

Best,
Zhifeng
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