Local and General Patterns of Terrestrial Water‐Carbon Coupling
Name
Geophysical Research Letters - 2024 - Short Gianotti - Local and General Patterns of Terrestrial Water‐Carbon Coupling.pdf
Description
Published version
Size
1.05 MB
Format
Adobe PDF
Checksum (MD5)
58a20107fba402840892723641d27772
Author(s)
Short Gianotti, Daniel J
Entekhabi, Dara
Date Issued
June 15, 2024
Journal
Geophysical Research Letters
Publisher
American Geophysical Union
Citation
Short Gianotti, D. J., & Entekhabi, D. (2024). Local and general patterns of terrestrial water-carbon coupling. Geophysical Research Letters, 51, e2024GL109625.
Version
Final published version
Abstract
Terrestrial carbon uptake and water availability have coupled feedbacks; specifically water uptake for plant growth and soil drying via transpiration. While we might expect this coupling over time at arid sites, climatic water availability also widely covaries geographically with biomass variables that control photosynthetic rates. Using eddy covariance data globally, we find convex, positively-covarying relations between carbon uptake and a turbulent flux metric controlled by land surface moisture (r = 0.73 monthly across sites) at the site level. We estimate a general, empirical relationship based on site-wise water-carbon dynamics. Most sites, and the general relationship, show strong power-law dependence, implicating the role of sub-seasonal land-cover dynamics. We also find that long-term mean carbon/water states follow a similar convex relationship to the site-specific temporal dynamics. We discuss opportunities and caveats for space-for-time frameworks of carbon/water feedback processes globally.
MIT Department
Parsons Laboratory for Environmental Science and Engineering (Massachusetts Institute of Technology)
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
10.1029/2024gl109625
