Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1618567114 |
Carbon dioxide sources from Alaska driven by increasing early winter respiration from Arctic tundra | |
Commane, Roisin1,2; Lindaas, Jakob2; Benmergui, Joshua1; Luus, Kristina A.3; Chang, Rachel Y. -W.4; Daube, Bruce C.1,2; Euskirchen, Eugenie S.5; Henderson, John M.6; Karion, Anna7; Miller, John B.8; Miller, Scot M.9; Parazoo, Nicholas C.10,11; Randerson, James T.12; Sweeney, Colm7,13; Tans, Pieter13; Thoning, Kirk13; Veraverbeke, Sander12,14; Miller, Charles E.11; Wofsy, Steven C.1,2 | |
2017-05-23 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:21页码:5361-5366 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Ireland; Canada; Netherlands |
英文摘要 | High-latitude ecosystems have the capacity to release large amounts of carbon dioxide (CO2) to the atmosphere in response to increasing temperatures, representing a potentially significant positive feedback within the climate system. Here, we combine aircraft and tower observations of atmospheric CO2 with remote sensing data and meteorological products to derive temporally and spatially resolved year-round CO2 fluxes across Alaska during 2012-2014. We find that tundra ecosystems were a net source of CO2 to the atmosphere annually, with especially high rates of respiration during early winter (October through December). Long-term records at Barrow, AK, suggest that CO2 emission rates from North Slope tundra have increased during the October through December period by 73% +/- 11% since 1975, and are correlated with rising summer temperatures. Together, these results imply increasing early winter respiration and net annual emission of CO2 in Alaska, in response to climate warming. Our results provide evidence that the decadalscale increase in the amplitude of the CO2 seasonal cycle may be linked with increasing biogenic emissions in the Arctic, following the growing season. Early winter respirationwas not well simulated by the Earth System Models used to forecast future carbon fluxes in recent climate assessments. Therefore, these assessments may underestimate the carbon release from Arctic soils in response to a warming climate. |
英文关键词 | carbon dioxide Arctic early winter respiration Alaska tundra |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401797800036 |
WOS关键词 | BLACK SPRUCE FOREST ; NORTHERN ECOSYSTEMS ; PLANT PRODUCTIVITY ; SEASONAL CYCLE ; CO2 EXCHANGE ; EMISSIONS ; CLIMATE ; FLUXES ; METHANE ; PATTERNS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204717 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Harvard John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA; 2.Harvard Univ, Dept Earth & Planetary Sci, Cambridge, MA 02138 USA; 3.Dublin Inst Technol, Ctr Appl Data Analyt, Dublin 2, Ireland; 4.Dalhousie Univ, Dept Phys & Atmospher Sci, Halifax, NS B3H 4R2, Canada; 5.Univ Alaska Fairbanks, Inst Arctic Biol, Fairbanks, AK 99775 USA; 6.Atmospher & Environm Res Inc, Lexington, MA 02421 USA; 7.Univ Colorado Boulder, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA; 8.NOAA, Global Monitoring Div, Boulder, CO 80305 USA; 9.Carnegie Inst Sci, Stanford, CA 94305 USA; 10.Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA 90095 USA; 11.CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA; 12.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA; 13.NOAA, Earth Sci Res Lab, Boulder, CO 80305 USA; 14.Vrije Univ Amsterdam, Fac Earth & Life Sci, NL-1081 HV Amsterdam, Netherlands |
推荐引用方式 GB/T 7714 | Commane, Roisin,Lindaas, Jakob,Benmergui, Joshua,et al. Carbon dioxide sources from Alaska driven by increasing early winter respiration from Arctic tundra[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(21):5361-5366. |
APA | Commane, Roisin.,Lindaas, Jakob.,Benmergui, Joshua.,Luus, Kristina A..,Chang, Rachel Y. -W..,...&Wofsy, Steven C..(2017).Carbon dioxide sources from Alaska driven by increasing early winter respiration from Arctic tundra.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(21),5361-5366. |
MLA | Commane, Roisin,et al."Carbon dioxide sources from Alaska driven by increasing early winter respiration from Arctic tundra".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.21(2017):5361-5366. |
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