[CF-metadata] CMIP6: just one name remaining!

From: Martin Juckes - UKRI STFC <martin.juckes>
Date: Thu, 5 Jul 2018 09:01:02 +0000

Dear Alison,


excellent, that is great news.


I'll send a query to the PMIP isotope experts later this morning.


Martin


________________________________
From: Pamment, Alison (STFC,RAL,RALSP)
Sent: 04 July 2018 16:19
To: CF-metadata (cf-metadata at cgd.ucar.edu); Juckes, Martin (STFC,RAL,RALSP)
Subject: CMIP6: just one name remaining!


Dear Martin,



After all the progress in recent weeks we have now reached the position where there is just one CMIP6 name remaining to be agreed.



It is the PMIP name:

isotope_ratio_of_2H_to_1H_in_sea_water_excluding_solutes_and_solids (1)

?The phrase "ratio_of_X_to_Y" means X/Y. The phrase "isotope_ratio" is used in the construction isotope_ratio_of_A_to_B where A and B are both named isotopes. It means the ratio of the number of atoms of A to the number of atoms of B present within a medium. "H" means the element "hydrogen" and "2H" is the stable isotope "hydrogen-2", usually called "deuterium". "1H" is the stable isotope "hydrogen-1". The phrase "in_sea_water_excluding_solutes_and_solids" means that the standard name refers to the composition of the sea water medium itself and does not include material that may be dissolved or suspended in the medium.?



The question that we need to resolve is whether '2H' includes water composed of both HDO and D2O. The name as it stands could be understood to mean the ratio of all 2H to 1H in sea water, regardless of whether the 2H occurs in heavy or semiheavy water, but this may not be the intention.



To publish the last few CMIP names I am planning a ?mini update? to the standard name table next week. It would be great if we could sort out this remaining one in time to include it!



Best wishes,

Alison



------

Alison Pamment Tel: +44 1235 778065

NCAS/Centre for Environmental Data Archival Email: alison.pamment at stfc.ac.uk

STFC Rutherford Appleton Laboratory

R25, 2.22

Harwell Oxford, Didcot, OX11 0QX, U.K.
Received on Thu Jul 05 2018 - 03:01:02 BST