Photosynthetic Control of Atmospheric Carbonyl Sulfide During the Growing Season

被引：169

作者：

Campbell, J. E. ^{[1
]}

Carmichael, G. R. ^{[2
]}

Chai, T. ^{[3
]}

Mena-Carrasco, M. ^{[4
,5
]}

Tang, Y. ^{[2
]}

Blake, D. R. ^{[6
]}

Blake, N. J. ^{[6
]}

Vay, S. A. ^{[7
]}

Collatz, G. J. ^{[8
]}

Baker, I. ^{[9
]}

Berry, J. A. ^{[10
]}

Montzka, S. A. ^{[11
]}

Sweeney, C. ^{[12
]}

Schnoor, J. L. ^{[1
]}

Stanier, C. O. ^{[2
]}

机构：

[1] Univ Iowa, Dept Civil & Environm Engn, Iowa City, IA 52242 USA

[2] Univ Iowa, Ctr Global & Reg Environm Res, Iowa City, IA 52242 USA

[3] Sci & Technol Corp, Hampton, VA 23666 USA

[4] Univ Andres Bello, Dept Environm Engn, Santiago, Chile

[5] MIT, Molina Ctr Energy & Environm, Cambridge, MA 02139 USA

[6] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

[7] NASA, Langley Res Ctr, Hampton, VA 23681 USA

[8] NASA, Goddard Space Flight Ctr, Biospher Sci Branch, Greenbelt, MD 20771 USA

[9] Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA

[10] Carnegie Inst Sci, Dept Global Ecol, Stanford, CA 94305 USA

[11] NOAA, Earth Syst Res Lab, Global Monitoring Div, Boulder, CO 80305 USA

[12] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80304 USA

来源：

SCIENCE | 2008年 / 322卷 / 5904期

关键词：

D O I：

10.1126/science.1164015

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Climate models incorporate photosynthesis- climate feedbacks, yet we lack robust tools for large- scale assessments of these processes. Recent work suggests that carbonyl sulfide ( COS), a trace gas consumed by plants, could provide a valuable constraint on photosynthesis. Here we analyze airborne observations of COS and carbon dioxide concentrations during the growing season over North America with a three- dimensional atmospheric transport model. We successfully modeled the persistent vertical drawdown of atmospheric COS using the quantitative relation between COS and photosynthesis that has been measured in plant chamber experiments. Furthermore, this drawdown is driven by plant uptake rather than other continental and oceanic fluxes in the model. These results provide quantitative evidence that COS gradients in the continental growing season may have broad use as a measurement- based photosynthesis tracer.

引用

页码：1085 / 1088

页数：4

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