globalchange  > 气候变化事实与影响
DOI: 10.1175/JCLI-D-14-00223.1
Scopus记录号: 2-s2.0-84920280725
论文题名:
The influence of chronic ozone exposure on global carbon and water cycles
作者: Lombardozzi D.; Levis S.; Bonan G.; Hess P.G.; Sparks J.P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2015
卷: 28, 期:1
起始页码: 292
结束页码: 305
语种: 英语
Scopus关键词: Atmospheric radiation ; Atmospheric temperature ; Budget control ; Greenhouse gases ; Ozone ; Photosynthesis ; Pollution control ; Transpiration ; Uncertainty analysis ; Vegetation ; Community land models ; Eastern north america ; Gross primary productivity ; Land surface modeling ; Stomatal conductance ; Surface energy budget ; Surface temperatures ; Water use efficiency ; Climate models ; atmospheric pollution ; carbon cycle ; greenhouse gas ; hydrological change ; hydrological cycle ; ozone ; photosynthesis ; primary production ; stomatal conductance ; surface temperature ; transpiration ; Central Africa ; Europe ; Southeast Asia ; United States
英文摘要: Ozone (O3) is a phytotoxic greenhouse gas that has increased more than threefold at Earth's surface from preindustrial values. In addition to directly increasing radiative forcing as a greenhouse gas, O3 indirectly impacts climate through altering the plant processes of photosynthesis and transpiration.While global estimates of gross primary productivity (GPP) have incorporated the effects of O3, fewstudies have explicitly determined the independent effects of O3 on transpiration. In this study, the authors include effects of O3 on photosynthesis and stomatal conductance from a recent literature review to determine the impact on GPP and transpiration and highlight uncertainty in modeling plant responses to O3. Using the Community Land Model, the authors estimate that present-day O3 exposure reduces GPP and transpiration globally by 8%-12% and 2%-2.4%, respectively. The largest reductions were in midlatitudes, with GPP decreasing up to 20% in the eastern United States, Europe, and Southeast Asia and transpiration reductions of up to 15% in the same regions. Larger reductions in GPP compared to transpiration decreased water-use efficiency 5%-10% in the eastern United States, Southeast Asia, Europe, and central Africa; increased surface runoff more than 15% in eastern North America; and altered patterns of energy fluxes in the tropics, high latitudes, and eastern NorthAmerica. Future climate predictions will be improved if plant responses to O3 are incorporated into models such that stomatal conductance is modified independently of photosynthesis and the effects on transpiration are explicitly considered in surface energy budgets. Improvements will help inform regional decisions for managing changes in hydrology and surface temperatures in response to O3 pollution. © 2015 American Meteorological Society.
资助项目: NSF, National Science Foundation ; NSF, National Science Foundation
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50495
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY, United States; National Center for Atmospheric Research, Boulder, CO, United States; Department of Biological and Environmental Engineering, Cornell University, Ithaca, NY, United States

Recommended Citation:
Lombardozzi D.,Levis S.,Bonan G.,et al. The influence of chronic ozone exposure on global carbon and water cycles[J]. Journal of Climate,2015-01-01,28(1)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Lombardozzi D.]'s Articles
[Levis S.]'s Articles
[Bonan G.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Lombardozzi D.]'s Articles
[Levis S.]'s Articles
[Bonan G.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Lombardozzi D.]‘s Articles
[Levis S.]‘s Articles
[Bonan G.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.