Difference between revisions of "Category:Trees Working Group"
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== Sensors == | == Sensors == | ||
An initial recommendation is to focus on different sensors: | An initial recommendation is to focus on different sensors: | ||
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| + | === Measurement variables === | ||
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| + | The traditional variable measured in dendrochronology is of course the whole ring-width. It is common now to collect a wealth of other variables from tree-rings including: | ||
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| + | * Whole ring width | ||
| + | * Early wood width | ||
| + | * Late wood width | ||
| + | * Whole ring density | ||
| + | * Early wood density | ||
| + | * Late wood density | ||
| + | * Maximum density | ||
| + | * Latewood percentage | ||
| + | * Vessel size | ||
| + | * Blue intensity (density proxy) | ||
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<references \> | <references \> | ||
Revision as of 16:47, 7 October 2016
Contents
Overview
In the Linked Earth context, a working group (WG) is a self-organized coalition of knowledgeable experts, whose activities are governed herewith. This page is dedicated to the discussion of data and metadata standards for trees (see this page for a definition of the wood archive), and aims to formulate a set of recommendations for such a standard. Note that chronological aspects should be discussed within the Chronologies WG.
Members of 'Trees Working Group'
This working group has 7 members.
Specific tasks
We recommend that discussions focus on the following techniques, and explore potential commonalities.
For each chronology type, we recommend:
- structuring discussions around what scientific questions one would want to ask of the data
- listing essential, recommended, and optional information for:
- the measurements themselves
- any inference made from the measurements (e.g. calibration to temperature)
- the underlying uncertainties, and what those numbers correspond to (e.g. 1-sigma or 2-sigma?)
- provide an ideal data table for each type of observation, so the community knows what to report and how to report it.
- provide separate recommendations for new and legacy datasets
Scope
Tree rings are used by many different researchers, for many different reasons. The LinkedEarth community is well rooted in the paleoclimate community and while the ontology and data standard has great potential for use outside this community, we need to decide how to address the overlap in our discussions. Should be concentrate on the needs of the paleoclimate community exclusively to begin with, and intend to go back and revise at a later date? Or should we attempt to accommodate all potential users of tree-ring data from day 1?
Sensors
An initial recommendation is to focus on different sensors:
Measurement variables
The traditional variable measured in dendrochronology is of course the whole ring-width. It is common now to collect a wealth of other variables from tree-rings including:
- Whole ring width
- Early wood width
- Late wood width
- Whole ring density
- Early wood density
- Late wood density
- Maximum density
- Latewood percentage
- Vessel size
- Blue intensity (density proxy)
Tree rings
Detrending
How to document the type of detrending applied to enable reproducibility.
Stable water isotopes
Here are polls that the group might want to consider:
You are not entitled to view results of this poll.
References
This category currently contains no pages or media.
