Talk:Dendroclimatology

message: This is TCO. I added a bunch of new content to make the page more content-rich and also to make it less focussed on temperature. I removed the divergence section as it (while interesting) is not central to a basic encyclopedia description of the field.
It still needs some work in formatting. I'm new to wiki and haven't figured out how to quickly and easily use the controls.
This is a big upgrade. Feel free to make it better. If someone comes in and reverts it, I will scream.71.246.149.92 19:15, 1 April 2007 (UTC)
thread_title: Untitled

message: I'm done messing with it for now. Main need is to add specific citations to the science literature.
I have tried to use a neutral tone to describe the field. I am broadly speaking a climate science skeptic, but not a denier. —The preceding unsigned comment was added by 71.246.149.92 (talk) 21:42, 1 April 2007 (UTC)
thread_title:  Done for now 

message: There is something very wrong about this wiki entry when the article is mostly about the subject's limitations and not the actual subject itself. It is obvious that by focussing on its limitations, this scientific field is being discredited by author(s) who do not like the contribution it plays in climate science and perhaps something else 124.168.232.150 (talk) 12:59, 19 November 2014 (UTC)
thread_title:  hidden agenda 

message: Please note that, by a decision of the Wikipedia community, this article and others relating to climate change (broadly construed) has been placed under article probation. Editors making disruptive edits may be blocked temporarily from editing the encyclopedia, or subject to other administrative remedies, according to standards that may be higher than elsewhere on Wikipedia. Please see Wikipedia:General sanctions/Climate change probation for full information and to review the decision. --TS 20:38, 2 January 2010 (UTC)
thread_title: Article probation

message: "Detecting evidence for CO2 fertilization from tree ring studies: The potential role of sampling biases" 
GLOBAL BIOGEOCHEMICAL CYCLES, VOL. 26, GB1025, 13 PP., 2012. doi:10.1029/2011GB004143
Key Points (from abstract):
* Observed increases in tree ring widths may be caused by sampling biases
* Standard sampling methods lead to spurious trends in historical growth rates
* Reported increases in ring width may often not be due to CO2 fertilization
Interesting. --Pete Tillman (talk) 21:01, 20 March 2012 (UTC)
replies: text: What a bizarre co-incidence. WUWT has exactly the same thing  William M. Connolley (talk) 22:33, 20 March 2012 (UTC)
replies: text: Could you comment on the substance of the paper, please? Thanks, Pete Tillman (talk) 14:48, 21 March 2012 (UTC)
thread_title:  New paper on divergence problem 

message: Seems like in long periods of higher or rising temperatures there would be more trees in a given forest, competing for nutrients/sunshine and other resources. The number of trees is obviously not reflected in the tree rings of individual trees, and yet could offset what would be expected if the same number of trees were growing from period to period.186.188.177.231 (talk) 22:52, 21 April 2014 (UTC)
thread_title: Main|Divergence problem

message: http://treephys.oxfordjournals.org/content/30/6/669.full
" The median values for height, stem diameter and all biomass measurements at elevated growth temperatures were always near 1 for evergreens, indicating that for every study that found increased growth with warming, there were a similar number that found a decrease (Figure 2A, B and F)."
That is to say that in some studies warmer trees would have narrower tree rings, in some studies. I do not know the implications of this for dendroclimatology, but it certainly looks problematical. Greglocock (talk) 04:06, 19 August 2014 (UTC)
thread_title:  Warmth vs stem diameter 

message: A lot of uncited commentary in this article, improvements needed. The above paper could be one source, Jacoby & D'Arrigo 1997 might also be useful at least as historical context. . dave souza, talk 12:35, 7 December 2014 (UTC)
thread_title: Citations needed

message: Hello fellow Wikipedians,
I have just modified  on Dendroclimatology. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
*Added archive https://web.archive.org/web/20071205022638/http://vathena.arc.nasa.gov:80/curric/land/global/treestel.html to http://vathena.arc.nasa.gov/curric/land/global/treestel.html
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thread_title:  External links modified 

message: This article explains the use of tree rings as a climate proxy fairly well. It does not go too far in depth about how exactly the data from trees is analyzed, but it does give basic information that tree ring width is best related to climate parameters, but isotope and chemical trace analysis can also give useful climate information. The article does not explicitly discuss the assumptions made during processes of dendroclimatology, but rather cites certain expected behaviors, such as trees in certain areas are expected to respond more strongly to particular factors. I think the article could do a better job of explicitly citing the assumption that are made to do this type of data analysis. It does, however, do a good job at pointing out the strengths and weakness of using this kind of proxy method, but probably focuses on the limitations involved too much, without giving more information on the strengths. Two peer-reviewed articles I found in my own research are “Tree-rings, a key ecological indicator of environment and climate change” by Zhihua Zhang, and “Dendroclimatology: extracting climate from trees” by Paul R. Sheppard. Both articles have relevant and recent information, but are not in the Wikipedia article. Overall, to improve this article, I think the page could benefit from more recent sources of information, as most of the current sources are ten years or older. Also, I think the page could use more sources of information in general to have a more thorough and complete information base. Cjadamaitis (talk) 23:36, 22 February 2017 (UTC)
replies: text: You are quite right. Please go ahead. Gabriel Kielland (talk) 08:10, 23 February 2017 (UTC)
thread_title:  Posting for Ohio State Global Climate Change class 

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*Added archive https://web.archive.org/web/20060905061336/http://www.cru.uea.ac.uk/cru/annrep94/trees/ to http://www.cru.uea.ac.uk/cru/annrep94/trees/
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thread_title:  External links modified