Warm spring reduced carbon cycle impact of the 2012 US summer drought
Abstract
The global terrestrial carbon sink offsets one-third of the world's fossil fuel emissions, but the strength of this sink is highly sensitive to large-scale extreme events. In 2012, the contiguous United States experienced exceptionally warm temperatures and the most severe drought since the Dust Bowl era of the 1930s, resulting in substantial economic damage. It is crucial to understand the dynamics of such events because warmer temperatures and a higher prevalence of drought are projected in a changing climate. Here in this paper, we combine an extensive network of direct ecosystem flux measurements with satellite remote sensing and atmospheric inverse modeling to quantify the impact of the warmer spring and summer drought on biosphereatmosphere carbon and water exchange in 2012. We consistently find that earlier vegetation activity increased spring carbon uptake and compensated for the reduced uptake during the summer drought, which mitigated the impact on net annual carbon uptake. The early phenological development in the Eastern Temperate Forests played a major role for the continental-scale carbon balance in 2012. The warm spring also depleted soil water resources earlier, and thus exacerbated water limitations during summer. Our results show that the detrimental effects of severe summer drought on ecosystem carbonmore »
- Authors:
-
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720,, Department of Environmental Systems Science, ETH Zurich, 8092 Zurich, Switzerland,
- Department of Biological Sciences, Macquarie University, Sydney, NSW 2109, Australia,
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109,
- Department of Environmental Science, Policy, and Management, University of California, Berkeley, CA 94720,
- Atmospheric and Oceanic Sciences, University of Wisconsin–Madison, Madison, WI 53706,
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138,
- US Department of Agriculture, Agricultural Research Service, Southwest Watershed Research Center, Tucson, AZ 85719,
- Department of Forest Ecosystems and Society, Oregon State University, Corvallis, OR 97331,
- Department of Biology, University of New Mexico, Albuquerque, NM 87131,
- Department of Geography, University of Kansas, Lawrence, KS 66045,
- Department of Meteorology and Air Quality, Wageningen University, 6708 PB Wageningen, The Netherlands,, Centre for Isotope Research, University of Groningen, 9747 AG Groningen, The Netherlands
- Department of Meteorology and Air Quality, Wageningen University, 6708 PB Wageningen, The Netherlands,
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); National Aeronautics and Space Administration (NASA); National Science Foundation (NSF); European Commission (EC)
- OSTI Identifier:
- 1249736
- Alternate Identifier(s):
- OSTI ID: 1379355
- Grant/Contract Number:
- AC02-05CH11231; 300083; EF-1065029
- Resource Type:
- Published Article
- Journal Name:
- Proceedings of the National Academy of Sciences of the United States of America
- Additional Journal Information:
- Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 113 Journal Issue: 21; Journal ID: ISSN 0027-8424
- Publisher:
- Proceedings of the National Academy of Sciences
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; seasonal climate anomalies; carbon uptake; ecosystem fluxes; biosphere–atmosphere feedbacks; eddy covariance
Citation Formats
Wolf, Sebastian, Keenan, Trevor F., Fisher, Joshua B., Baldocchi, Dennis D., Desai, Ankur R., Richardson, Andrew D., Scott, Russell L., Law, Beverly E., Litvak, Marcy E., Brunsell, Nathaniel A., Peters, Wouter, and van der Laan-Luijkx, Ingrid T. Warm spring reduced carbon cycle impact of the 2012 US summer drought. United States: N. p., 2016.
Web. doi:10.1073/pnas.1519620113.
Wolf, Sebastian, Keenan, Trevor F., Fisher, Joshua B., Baldocchi, Dennis D., Desai, Ankur R., Richardson, Andrew D., Scott, Russell L., Law, Beverly E., Litvak, Marcy E., Brunsell, Nathaniel A., Peters, Wouter, & van der Laan-Luijkx, Ingrid T. Warm spring reduced carbon cycle impact of the 2012 US summer drought. United States. https://doi.org/10.1073/pnas.1519620113
Wolf, Sebastian, Keenan, Trevor F., Fisher, Joshua B., Baldocchi, Dennis D., Desai, Ankur R., Richardson, Andrew D., Scott, Russell L., Law, Beverly E., Litvak, Marcy E., Brunsell, Nathaniel A., Peters, Wouter, and van der Laan-Luijkx, Ingrid T. Mon .
"Warm spring reduced carbon cycle impact of the 2012 US summer drought". United States. https://doi.org/10.1073/pnas.1519620113.
@article{osti_1249736,
title = {Warm spring reduced carbon cycle impact of the 2012 US summer drought},
author = {Wolf, Sebastian and Keenan, Trevor F. and Fisher, Joshua B. and Baldocchi, Dennis D. and Desai, Ankur R. and Richardson, Andrew D. and Scott, Russell L. and Law, Beverly E. and Litvak, Marcy E. and Brunsell, Nathaniel A. and Peters, Wouter and van der Laan-Luijkx, Ingrid T.},
abstractNote = {The global terrestrial carbon sink offsets one-third of the world's fossil fuel emissions, but the strength of this sink is highly sensitive to large-scale extreme events. In 2012, the contiguous United States experienced exceptionally warm temperatures and the most severe drought since the Dust Bowl era of the 1930s, resulting in substantial economic damage. It is crucial to understand the dynamics of such events because warmer temperatures and a higher prevalence of drought are projected in a changing climate. Here in this paper, we combine an extensive network of direct ecosystem flux measurements with satellite remote sensing and atmospheric inverse modeling to quantify the impact of the warmer spring and summer drought on biosphereatmosphere carbon and water exchange in 2012. We consistently find that earlier vegetation activity increased spring carbon uptake and compensated for the reduced uptake during the summer drought, which mitigated the impact on net annual carbon uptake. The early phenological development in the Eastern Temperate Forests played a major role for the continental-scale carbon balance in 2012. The warm spring also depleted soil water resources earlier, and thus exacerbated water limitations during summer. Our results show that the detrimental effects of severe summer drought on ecosystem carbon storage can be mitigated by warming-induced increases in spring carbon uptake. However, the results also suggest that the positive carbon cycle effect of warm spring enhances water limitations and can increase summer heating through biosphere-atmosphere feedbacks.},
doi = {10.1073/pnas.1519620113},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 21,
volume = 113,
place = {United States},
year = {Mon Apr 25 00:00:00 EDT 2016},
month = {Mon Apr 25 00:00:00 EDT 2016}
}
https://doi.org/10.1073/pnas.1519620113
Web of Science
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