Table B 0 08 045 is missing

[amilan17]

Branch

https://github.com/wmo-im/BUFR4/tree/issue83

Summary and purpose

0 08 045 is missing. Referenced in Class 08, note 7: "When descriptor 0 08 043 is used to specify particulate matter (PM) under a given size threshold, descriptor 0 08 045 may also be used to further specify a subset of the PM population on the basis of ion composition."
page: BUFR/CREX Table B/08 - 5

Stakeholders

include as appropriate

Action proposed

Add missing reference or update note

Discussions

see comments below

Detailed proposal

1. Change note to: "When descriptor 0 08 043 is used to specify particulate matter (PM) under a given size threshold, descriptor 0 08 044 or 0 08 046 may also be used to further specify a subset of the PM population on the basis of ion composition."
   2. Add title for table 0 08 44 in PDF

[amilan17]

@amilan17 - research previous amendments
Sergio found this descriptor in versions 13 -17 of the standard on his computer, maybe it was removed on purpose or accident?
Jeff - perhaps they note should reference 0 08 044 or 0 08 046 instead

[david-i-berry]

Based on https://confluence.ecmwf.int/display/ECC/WMO%3D18+element+table the last occurrence of 008045 is in version 18.

008045	8	45	PARTICULATE MATTER CHARACTERIZATION	particulateMatterCharacterization	CODE TABLE	0	0	8	CODE TABLE	0	3

[jbathegit]

0-08-044 apparently does exist, as "CAS registry number". I just checked the BUFRCREX_TableB_en.xml files for versions 35, 36, and 37, and all of them include 0-08-044 as follows:

  <BUFRCREX_TableB_en>
    <ClassNo>08</ClassNo>
    <ClassName_en>Significance qualifiers</ClassName_en>
    <FXY>008044</FXY>
    <ElementName_en>CAS registry number</ElementName_en>
    <BUFR_Unit>CCITT IA5</BUFR_Unit>
    <BUFR_Scale>0</BUFR_Scale>
    <BUFR_ReferenceValue>0</BUFR_ReferenceValue>
    <BUFR_DataWidth_Bits>88</BUFR_DataWidth_Bits>
    <CREX_Unit>Character</CREX_Unit>
    <CREX_Scale>0</CREX_Scale>
    <CREX_DataWidth_Char>11</CREX_DataWidth_Char>
    <Status>Operational</Status>
  </BUFRCREX_TableB_en>

I presume it also exists in earlier versions as well, but at this point I only just checked 35, 36, and 37.

[SibylleK]

It seems, that 008045 has never been validated and was finally withdrawn? Information could be found in the report of the Joint Meeting of CT-MTDCF and ET-DRC in Montreal 2006. The proposed code table was:

Code table 0 08 045
Code figure Meaning
0 Particulate Matter (all types)
1 NO3(-)
2 NH4(+)
3 Na(+)
4 Cl(-)
5 Ca(2+)
6 Mg(2+)
7 K(+)
8 SO4(2-)
9-200 reserved
201-254 reserved for local use
255 missing

But, at this time the Common Code Table C-14 does not exit and was developed only afterwards.

Therefore, the note should rather be changed in:
"When descriptor 0 08 043 is used to specify particulate matter (PM) under a given size threshold, descriptor 0 08 044 or 0 08 046 may also be used to further specify a subset of the PM population on the basis of ion composition."

[amilan17]

@jbathegit  ok. I assume 0 08 044 is not in this CSV below, because we can't copy the entire CAS Registry. https://github.com/wmo-im/BUFR4/blob/master/BUFRCREX_CodeFlag_en_08.csv

@jitsukoh I recommend publishing this table in the PDF in 

[amilan17]

@SibylleK Thank you for finding this 2006 report. I see that is was also "awaiting validation" in the 2007 report and then no mention of it in the 2008 reports.

[jbathegit]

This is interesting. I thought the XML files were generated from the CSV files, so I'm curious how 008044 is in the former but not the latter?

I guess I would have been expecting something like we have for 008046 in the CSV files, where there's just a placeholder marking that the entry is occupied, but like you said not a copy of the entire CAS registry. I agree that would be unnecessary and incredibly burdensome.

[amilan17]

https://github.com/wmo-im/BUFR4/blob/master/xml/BUFRCREX_TableB_en.xml

[amilan17]

don't put reference to 0 08 044 in section with code tables, because it's not a code table

[amilan17]

This is interesting. I thought the XML files were generated from the CSV files, so I'm curious how 008044 is in the former but not the latter?

@jbathegit 0 08 044 is listed https://github.com/wmo-im/BUFR4/blob/master/BUFRCREX_TableB_en_08.csv and this is what the https://github.com/wmo-im/BUFR4/blob/master/xml/BUFRCREX_TableB_en.xml is generated from

[amilan17]

@jitsukoh the notes file in the branch is updated and ready for validation

[jitsukoh]

@amilan17 thank you for updating. Looks good. I move this issue to the validated status.