Category talk:Trees Working Group

initiated discussion on detrending -- JEG (talk) 17:35, 17 October 2016 (PDT)

First off, this page looks great - thanks to anyone who has contributed.

Re: detrending, this reminds me that in the rest of LinkedEarth, we encourage users to distinguished between native observations and any processed form thereof. Because detrending may result in a loss of information, I would encourage the group to describe:

1. Guidelines to store raw data, for each measurement type

1. Guidelines to store metadata about detrending method (e.g. method name, software implementation, parameter values, etc).

Cheers, JEG

Re: initiated discussion on detrending -- Petebrew (talk) 10:22, 18 October 2016 (PDT)

I've put in some basics for what I think is needed, but isn't this a problem shared by all proxies? These are fairly standard mathematical techniques that I'd assume are used in other proxies too?

Re: Re: initiated discussion on detrending -- JEG (talk) 15:53, 13 March 2017 (PDT)

Actually, they are not. Tree rings are somewhat unique in the amount of mathematical processing required to isolate the climatic component of the growth curve. In many cases it would be desirable to reprocess old TRW data with different detrending techniques depending on th goal, but that is often not feasible if the original data are not archived, or if the detrending process is irreversible.