Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL070842 |
Tundra photosynthesis captured by satellite-observed solar-induced chlorophyll fluorescence | |
Luus, K. A.1; Commane, R.2; Parazoo, N. C.3; Benmergui, J.2; Euskirchen, E. S.4; Frankenberg, C.5; Joiner, J.6; Lindaas, J.2,7; Miller, C. E.3; Oechel, W. C.8,9; Zona, D.8,10; Wofsy, S.2; Lin, J. C.11 | |
2017-02-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Ireland; USA; England |
英文摘要 | Accurately quantifying the timing and magnitude of respiration and photosynthesis by high-latitude ecosystems is important for understanding how a warming climate influences global carbon cycling. Data-driven estimates of photosynthesis across Arctic regions often rely on satellite-derived enhanced vegetation index (EVI); we find that satellite observations of solar-induced chlorophyll fluorescence (SIF) provide a more direct proxy for photosynthesis. We model Alaskan tundra CO2 cycling (2012-2014) according to temperature and shortwave radiation and alternately input EVI or SIF to prescribe the annual seasonal cycle of photosynthesis. We find that EVI-based seasonality indicates spring "green-up" to occur 9 days prior to SIF-based estimates, and that SIF-based estimates agree with aircraft and tower measurements of CO2. Adopting SIF, instead of EVI, for modeling the seasonal cycle of tundra photosynthesis can result in more accurate estimates of growing season duration and net carbon uptake by arctic vegetation. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396115000044 |
WOS关键词 | PERMAFROST CARBON ; GROWING-SEASON ; CLIMATE-CHANGE ; VEGETATION ; ECOSYSTEM ; SNOW ; SIMULATIONS ; FLUXES ; CYCLE ; VULNERABILITY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/25809 |
专题 | 气候变化 |
作者单位 | 1.Ctr Appl Data Analyt Res, Dublin, Ireland; 2.Harvard Univ, John A Paulson Sch Engn & Appl Sci, Cambridge, MA 02138 USA; 3.Jet Prop Lab, Pasadena, CA USA; 4.Univ Alaska Fairbanks, Inst Arctic Biol, Fairbanks, AK USA; 5.CALTECH, Environm Sci & Engn, Pasadena, CA 91125 USA; 6.NASA, Goddard Space Flight Ctr, Greenbelt, MD USA; 7.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA; 8.San Diego State Univ, Dept Biol, San Diego, CA 92182 USA; 9.Univ Exeter, Coll Life & Environm Sci, Exeter, Devon, England; 10.Univ Sheffield, Dept Anim & Plant Sci, Sheffield, S Yorkshire, England; 11.Univ Utah, Dept Atmospher Sci, Salt Lake City, UT USA |
推荐引用方式 GB/T 7714 | Luus, K. A.,Commane, R.,Parazoo, N. C.,et al. Tundra photosynthesis captured by satellite-observed solar-induced chlorophyll fluorescence[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(3). |
APA | Luus, K. A..,Commane, R..,Parazoo, N. C..,Benmergui, J..,Euskirchen, E. S..,...&Lin, J. C..(2017).Tundra photosynthesis captured by satellite-observed solar-induced chlorophyll fluorescence.GEOPHYSICAL RESEARCH LETTERS,44(3). |
MLA | Luus, K. A.,et al."Tundra photosynthesis captured by satellite-observed solar-induced chlorophyll fluorescence".GEOPHYSICAL RESEARCH LETTERS 44.3(2017). |
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