DOI: 10.1111/gcb.12391
论文题名: Vegetation controls on northern high latitude snow-albedo feedback: Observations and CMIP5 model simulations
作者: Loranty M.M. ; Berner L.T. ; Goetz S.J. ; Jin Y. ; Randerson J.T.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 2 起始页码: 594
结束页码: 606
语种: 英语
英文关键词: Albedo
; Arctic
; Boreal forest
; Climate feedback
; CMIP5
; Global change
; Vegetation cover
Scopus关键词: albedo
; arctic environment
; boreal forest
; climate feedback
; climate modeling
; global change
; snow
; vegetation cover
; Arctic
; snow
; albedo
; Arctic
; article
; climate change
; climate feedback
; CMIP5
; ecosystem
; global change
; plant physiology
; remote sensing
; taiga
; theoretical model
; vegetation cover
; albedo
; arctic
; boreal forest
; climate feedback
; CMIP5
; global change
; vegetation cover
; Climate Change
; Ecosystem
; Models, Theoretical
; Plant Physiological Processes
; Remote Sensing Technology
; Snow
英文摘要: The snow-masking effect of vegetation exerts strong control on albedo in northern high latitude ecosystems. Large-scale changes in the distribution and stature of vegetation in this region will thus have important feedbacks to climate. The snow-albedo feedback is controlled largely by the contrast between snow-covered and snow-free albedo (Δα), which influences predictions of future warming in coupled climate models, despite being poorly constrained at seasonal and century time scales. Here, we compare satellite observations and coupled climate model representations of albedo and tree cover for the boreal and Arctic region. Our analyses reveal consistent declines in albedo with increasing tree cover, occurring south of latitudinal tree line, that are poorly represented in coupled climate models. Observed relationships between albedo and tree cover differ substantially between snow-covered and snow-free periods, and among plant functional type. Tree cover in models varies widely but surprisingly does not correlate well with model albedo. Furthermore, our results demonstrate a relationship between tree cover and snow-albedo feedback that may be used to accurately constrain high latitude albedo feedbacks in coupled climate models under current and future vegetation distributions. © 2013 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61992
Appears in Collections: 影响、适应和脆弱性
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作者单位: Woods Hole Research Center, 149 Woods Hole Rd, Falmouth, MA, 02540, United States; Department of Geography, Colgate University, Hamilton, NY, 13346, United States; Department of Earth System Science, University of California, Irvine, CA, 92697, United States
Recommended Citation:
Loranty M.M.,Berner L.T.,Goetz S.J.,et al. Vegetation controls on northern high latitude snow-albedo feedback: Observations and CMIP5 model simulations[J]. Global Change Biology,2014-01-01,20(2)