Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL077316 |
Changes in the Response of the Northern Hemisphere Carbon Uptake to Temperature Over the Last Three Decades | |
Yin, Yi1,2; Ciais, Philippe2; Chevallier, Frederic2; Li, Wei2; Bastos, Ana2,3; Piao, Shilong4,5; Wang, Tao5; Liu, Hongyan4 | |
2018-05-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:9页码:4371-4380 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; France; Germany; Peoples R China |
英文摘要 | The CO2 seasonal cycle amplitude (SCA) in the Northern Hemisphere has increased since the 1960sa feature attributed mainly to enhanced vegetation activity along climate warming and CO2 increase. We identified a temporal change in the sign of the correlation between SCA and air temperature (T) from positive to negative around the year 2000 at most Northern Hemisphere ground stations, consistent with signals from satellite column CO2 measurements since the mid-2000s. Further, we explored potential causes of this change using net biome productivity estimates from three atmospheric inversions for the period 1980-2015. The change in the SCA-T relationship is primarily attributable to changes in the net biome productivity-T relationship: positive correlations weakened in the spring in the high latitudes, confirming a limit to the "warmer spring-bigger carbon sink" mechanism; negative correlations diminished in the autumn/winter in the mid-to-high latitudes, challenging the "warmer winter-larger carbon release" assumption and highlighting the complexity of carbon processes outside the peak growing season. Plain Language Summary The seasonal cycle amplitude (SCA) of atmospheric CO(2)an integrated signal of the terrestrial ecosystem metabolismhas increased since the 1960s in the Northern Hemisphere, a feature attributed mainly to enhanced vegetation activity along climate warming and CO2 increase. Earlier studies suggest a strong positive year-to-year correlation between SCA and air temperature (T). Here we identified a temporal change in the sign of the SCA-T correlation from positive to negative around the year 2000 at most Northern Hemisphere ground stations, consistent with signals from satellite column CO2 observations. We further explored potential causes of this change using land carbon flux (termed as net biome productivity) estimates from three atmospheric inversions for the period 1980-2015. The change in the SCA-T relationship is primarily attributable to changes in the net biome productivity-T relationship: positive correlations weakened in the spring in the high latitudes, confirming a limit to the "warmer spring-bigger carbon sink" mechanism; negative correlations diminished in the autumn/winter in the mid-to-high latitudes, challenging the "warmer winter-larger carbon release" assumption. This finding highlights a dynamic temperature sensitivity of the terrestrial ecosystem to climate warming and cautions the use of current carbon-climate response to constrain future projections. |
英文关键词 | CO2 seasonal cycle carbon-climate interaction temperature sensitivity net biome production global carbon cycle soil respiration |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434111700069 |
WOS关键词 | ATMOSPHERIC CO2 ; SEASONAL CYCLE ; SURFACE-TEMPERATURE ; SOIL RESPIRATION ; EXCHANGE ; DIOXIDE ; ECOSYSTEMS ; INCREASES ; WINTER ; FLUX |
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/28644 |
专题 | 气候变化 |
作者单位 | 1.CALTECH, Pasadena, CA 91125 USA; 2.CEA CNRS UVSQ, Lab Sci Climat & Environm, Gif Sur Yvette, France; 3.Ludwig Maximilians Univ Munchen, Dept Geog, Munich, Germany; 4.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing, Peoples R China; 5.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Yin, Yi,Ciais, Philippe,Chevallier, Frederic,et al. Changes in the Response of the Northern Hemisphere Carbon Uptake to Temperature Over the Last Three Decades[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(9):4371-4380. |
APA | Yin, Yi.,Ciais, Philippe.,Chevallier, Frederic.,Li, Wei.,Bastos, Ana.,...&Liu, Hongyan.(2018).Changes in the Response of the Northern Hemisphere Carbon Uptake to Temperature Over the Last Three Decades.GEOPHYSICAL RESEARCH LETTERS,45(9),4371-4380. |
MLA | Yin, Yi,et al."Changes in the Response of the Northern Hemisphere Carbon Uptake to Temperature Over the Last Three Decades".GEOPHYSICAL RESEARCH LETTERS 45.9(2018):4371-4380. |
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