Campus Units

Agronomy

Document Type

Article

Publication Version

Published Version

Publication Date

10-28-2016

Journal or Book Title

Geophysical Research Letters

Volume

43

Issue

20

First Page

10,773

Last Page

10,781

DOI

10.1002/2016GL069981

Abstract

Biofuel feedstocks provide a renewable energy source that can reduce fossil fuel emissions; however, if produced on a large scale they can also impact local to regional water and carbon budgets. Simulation results for 2005–2014 from a regional weather model adapted to simulate the growth of two perennial grass biofuel feedstocks suggest that replacing at least half the current annual cropland with these grasses would increase water use efficiency and drive greater rainfall downwind of perturbed grid cells, but increased evapotranspiration (ET) might switch the Mississippi River basin from having a net warm-season surplus of water (precipitation minus ET) to a net deficit. While this scenario reduces land required for biofuel feedstock production relative to current use for maize grain ethanol production, it only offsets approximately one decade of projected anthropogenic warming and increased water vapor results in greater atmospheric heat content.

Comments

This article is from Geophysical Research Letters 43 (2016): 10,773, doi: 10.1002/2016GL069981. Posted with permission.

Rights

This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

Copyright Owner

The Authors

Language

en

File Format

application/pdf

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