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deck730 CLIWOC missing code tables and CDM codes

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deck730 CLIWOC missing code tables and CDM codes

cc. @dyb, @eck

Due to the lack of documentation available for this deck regarding the c99 attachment, we decided to generate code tables by printing out unique values for the missing fields.

This has been explained in the following Notebook

This issue is related to the issue#4 from the mdf_reader() repository.

We have successfully mapped the following fields:

  • Ship name
  • Air temperature original values and units
  • SST original values and units

We have mapped the following fields but the codes tables are still incomplete due to:

  • Air temperature units: we require an extra CDM code for Reamur

  • Platform sub-type: I have identified the different type of sailing ships, grouped them into categories and assigned a code from the CDM for those type of ships that are in the CDM (More info the Notebook above). However, more codes in the CDM are needed and a deep review of the categories that assigned to each sailing ship. A spread sheet with the categories and platform subtypes is located under the ICOADS_Documentation/structure folder

  • SLP original value and units: Here we need to identify what DSL12 and DSL10 units mean. Convert them or produce a code for these units in the CDM.

We could potentially map:

  • Wind Force / Wind speed: if we are able to convert the code tables for the multiple scales used to report the Wind force in the different languages.

  • Dew point temperature: if we convert the methods of recording humidity.

There is no barometer height information for this deck.

As pointed out in the CLIWOC documentation the observations time and position have been recorded and converted to CDM units and added to the CORE section of the imma format and are not present in the c99 attachment string.

Therefore there is a big limitation on what can be map here.

A first draft of the CDM-mapper for this deck can be found in the branch deck730. I will push this to github once we have a better idea of the CDM codes for the missing units & platform subtypes.

Edited
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