Geography
Document Type
Article
Abstract
Reduced carbon uptake caused by recent heat and drought extremes raises concerns about biospheric feedbacks that amplify global warming. However, elevated carbon dioxide is expected to boost terrestrial ecosystem productivity over the 21st century, potentially alleviating some of the adverse carbon impacts of climate extremes. Using CMIP5 earth system model (ESM) results, Ian Williams and colleagues (2014 Environ. Res. Lett. 9 094011) find that the carbon impacts of heat and drought extremes in the future are likely to be similar to those seen in today's climate only shifted toward fluctuations around a higher average temperature. However, they also find that extremes may become more frequent and longer lived, causing further reductions in carbon uptake. Considering that ESMs generally miss a host of heat and drought induced mortality mechanisms that could exacerbate adverse carbon impacts, it is logical to expect that the impacts of today's heat and drought extremes are likely underestimates of what we can expect in the future with a high fossil emissions pathway.
Publication Title
Environmental Research Letters
Publication Date
2014
Volume
9
Issue
10
ISSN
1748-9318
DOI
10.1088/1748-9326/9/10/101002
Keywords
climate change, gross primary productivity, heat wave, water stress
Repository Citation
Williams, Christopher A., "Heat and drought extremes likely to stress ecosystem productivity equally or more in a warmer, CO2rich future" (2014). Geography. 892.
https://commons.clarku.edu/faculty_geography/892
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright Conditions
Published source must be acknowledged with citation:
Williams, Christopher Alan. "Heat and drought extremes likely to stress ecosystem productivity equally or more in a warmer, CO2 rich future." Environmental Research Letters 9.10 (2014): 101002.