RN WW2 Observations index

Gridding the new marine obs

To use the new obs, we need to process them into gridded fields of SST, NMAT etc. So I've fed them into the Marine Data System (MDS2).
  1. Convert the IMMA format to the MDS the MDS tenday format (using this script), producing these tenday files.
  2. Run the MDS QC on the new tenday files. (Basic, track check, and buddy QC).
  3. Modify the MDS gridding and printing scripts to work with the new obs: In place of supergrid and superprint, use newgrid.perl and newprint.perl (both in directory /data/cr2/hadpb/digitised_obs/hacked_mds. These behave in exactly the same way as the standard MDS versions except they have two new options:
    • --use_old=<true or false> specifies whether to use the ICOADS obs.
    • --use_new=<true or false> specifies whether to use the newly digitised obs.
    So we can print or grid either subset of the obs, or a combination. The default is just to use the new obs.

Gridded data

PP datasets of SST, NAT, DAT and pressure (made with this script) are in /data/cr2/hadpb/digitised_obs/gridded_fields. To visualise them, use this script.