[CF-metadata] Standard names for mean sea level change

2017-06-14 Thread alison.pamment
Dear Jonathan, All, In the NEMO discussion thread we have just agreed three new sea surface height change names. At the end of that discussion Jonathan proposed that we should also add three similar names for changes in mean sea level: > Although I haven't an immediate use-case, I would say it'

[CF-metadata] Standard names for mean sea level change

2017-06-14 Thread Jonathan Gregory
Dear Alison Thanks for thinking about this. > > I put [mean] in brackets because I'm not sure whether we've decided to > > include > > "mean" in MSL names (that's a different discussion). The above quantities > > are > > not global average; we already have global average names. > > > The usual

Re: [CF-metadata] Standard names for mean sea level change

2017-06-14 Thread Lowry, Roy K.
Hi Alison, I sent a response to Karl a couple of weeks back on 'mean sea level', which I'll repeat below: ' As an oceanographic data centre we come across the term 'mean' sea level quite a lot. Common understanding of the generic term is that the averaging interval is any period long enough t

Re: [CF-metadata] Standard names for mean sea level change

2017-06-14 Thread Lowry, Roy K.
Dear Jonathan and Alison, A couple more things prompted by Jonathan's reply. I totally agree with creating the aliases and like Jonathan's definition, although I wouldn't specify 19 years anywhere. Even the standards like ODN are averaged over less than 10 years. One year seems to be commonly u

Re: [CF-metadata] Standard names for mean sea level change

2017-06-14 Thread Jonathan Gregory
Dear Roy and Alison > To clarify, what I was getting at with the rationalisation of syntax was > mixed use of 'average' and 'mean' for the same statistic and the fact that > the names are opposite ways around. For example, instead of > thermosteric_change_in_mean_sea_level and > global_average

Re: [CF-metadata] Standard names for mean sea level change

2017-06-14 Thread Lowry, Roy K.
Dear Jonathan, I'm OK with losing the 'principal'. I know what I mean by that, but there are some (many) who might not! Cheers, Roy. Please note that I partially retired on 01/11/2015. I am now only working 7.5 hours a week and can only guarantee e-mail response on Wednesdays, my day in th