GLEON Metabolism 1
GLEON WORKING GROUP
These tasks are associated with one subgroup under the GLEON Metabolism 1 Working Group, better known as the Catchment-Lake Age-of-Carbon THEORY Subgroup .
Participants: Tom Harmon, Paul Hanson, Gopal Bhatt, Stuart Jones, Sam Oliver, Hilary Dugan, Roxanna Ayllon, Yang Cui
===Workflow=== (outcome of G16 breakout sessions)
- Develop Conceptual Model [Tom, Paul, Gopal]
- Paul and Gopal reach out for AoW code
- Translation to r-coding: AoW to rAoW (ruh’ ow!) [Stuart, Sam, Hilary, Gopal]
- Lit. review targeting carbon transformation rates [Roxanna, Yang]
- Define model space [Sam, Jake--Emp Group]
- Lit. review of prospective study gradients [Roxanna, Kevin]
- Gradient Sensitivity Analysis (TBD at later date)
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Skype Mtg #1 (12/30/14)
Attendees: Tom H, Kevin R, Stuart J, Hilary D
Summary - At G16, we decided to attempt to develop and use an Age of Carbon approach based on Duffy (2012), and use it to explore lake metabolism-catchment connections. In this Skype meeting, we revisited the method and Tom noted some good papers to read for people who want to come up to speed on the approach (posted below). Then, we discussed our approach to exploring the solution space of the "age" models we plan to develop.
The method is based on moment analysis, and results in relatively simple expressions (mathematically) for quantifying the age of water in idealized watersheds. Although Duffy (2012) opens the door to reactive transport, he stuck mainly with the age of water or conservative tracers. We decided to try to (1) reproduce the first two cases in Duffy (2012) and (2) extend the analysis to include 1st order decay of organic carbon constituents. The two cases involve a simplistic watershed characterized by a volume V and flow Q, and a similar buy slightly more complex ideal watershed characterized by a mobile (Vm) and immobile (Vim) volumes--we decided that his might be one level of complexity that would be interesting to explore.
In terms of the solutions space, we discussed a broad approach associated with exploring the lake-catchment chara
