Re: [CF-metadata] new TEOS-10 standard names

2011-11-28 Thread Trevor.Mcdougall
Dear All, Below, I have edited the email from Paul Durack. There are a number of small edits in what follows. Larger comments which should be removed begin with && and end with ** Is there not a better way that we can see each other's edits? Note that I have not seen anything

Re: [CF-metadata] SUGGESTED WAY FORWARD FOR CF-metadata:- lets finalize this discussion.

2011-10-07 Thread Trevor.Mcdougall
Dear All, I think that the reason that we are facing a dilemma is simply because the word "salinity" now stands for a variety of things. That is, we have not been as careful with "salinity" as we now realize we should have been over the past 50 or 100 years. My understanding of oceanographi

Re: [CF-metadata] new TEOS-10 standard names

2011-10-05 Thread Trevor.Mcdougall
Hello Roy, You make a good point about the pre 1978 data. Perhaps we need yet another name, such as "Pre78salinity" to indicate that it was probably obtained by chemical titration. By introducing such a salinity will have the advantage of reducing the present ambiguity which calls this olde

Re: [CF-metadata] new TEOS-10 standard names

2011-10-04 Thread Trevor.Mcdougall
Dear all, At the risk of repeating ourselves, because there are now (at least) three different salinities, it is now ambiguous and confusing to call any salinity "Salinity". The Announcement of TEOS-10 that is now appearing in all 22 oceanographic journals specifically recommends that the u

Re: [CF-metadata] new TEOS-10 standard names

2011-07-26 Thread Trevor.Mcdougall
A couple of quick comments following on from Jonathan's post. (1) I know of at least 6 pre-TEOS-10 expressions for density used in models, with authors like Fofonoff & Millard, Cox, Wright, Jackett & McDougall, McDougall et al. Jackett e

Re: [CF-metadata] new TEOS-10 standard names

2011-07-26 Thread Trevor.Mcdougall
Hello Jonathon, The use of the word "preformed" in "Preformed Salinity" is the same use as in "preformed nitrate", NO, and "preformed phosphate" PO. The idea is to recover the conservative variable that would be present if there were no biogeochemistry. The methods that we use probably sub

Re: [CF-metadata] new TEOS-10 standard names:- reply to two emails.

2011-07-26 Thread Trevor.Mcdougall
Hello Nan, You make an excellent point. The version number of the software than converts Practical Salinity to Absolute Salinity should be included as metadata. The present version number of the GSW software is version 3.0. The TEOS-10 Manual says that oceanographers should state the vers

Re: [CF-metadata] new TEOS-10 standard names:- reply to two emails.

2011-07-26 Thread Trevor.Mcdougall
Two replies follow, first to Karl Taylor, then to Roy Lowrie. Hello Karl, (1) "potential temperature" is what it always was, namely the temperature of a seawater parcel after an adiabatic and isohaline change of pressure to p = 0 dbar. (2) "Conservative Temperature" is proportional to

[CF-metadata] new TEOS-10 standard names

2011-07-21 Thread Trevor.Mcdougall
Dear Nan et al., I want to weigh in to this discussion, as chair of SCOR/IAPSO Working Group 127. In June 2009 the Intergovernmental Oceanographic Commission, which is comprised of 146 nations, adopted TEOS-10 as the formal definition of seawater properties (and of ice and of humid air