Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-17-0580.1 |
Sensitivity of Leaf Area to Interannual Climate Variation as a Diagnostic of Ecosystem Function in CMIP5 Carbon Cycle Models | |
Quetin, Gregory R.; Swann, Abigail L. S. | |
2018-10-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:20页码:8607-8625 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The response of the biosphere to variation in climate plays a key role in predicting the carbon cycle, hydrological cycle, terrestrial surface energy balance, and the feedbacks in the climate system. Predicting the response of Earth's biosphere to global warming requires the ability to mechanistically represent the processes controlling photosynthesis, respiration, and water use. This study uses observations of the sensitivity of leaf area to the physical environment to identify where ecosystem functioning is well simulated in an ensemble of Earth system models. These patterns and data-model comparisons are leveraged to hypothesize which physiological mechanismsphotosynthetic efficiency, respiration, water supply, atmospheric water demand, and sunlight availabilitydominate the ecosystem response in places with different climates. The models are generally successful in reproducing the broad sign and shape of the sensitivity of leaf area to interannual variations in climate, except for simulating generally decreased leaf area during warmer years in places with hot, wet climates. In addition, simulated sensitivity of the leaf area to temperature is generally larger and changes more rapidly across a gradient of temperature than is observed. We hypothesize that the amplified sensitivity and change are both due to a lack of adaptation and acclimation in simulations. This discrepancy with observations suggests that the simulated sensitivities of vegetation climate are too strong in the models. Finally, models and observations share an abrupt threshold between dry regions and wet regions around 1000 mm yr(-1). |
英文关键词 | Atmosphere-land interaction Biosphere-atmosphere interaction Ecosystem effects Climate models Land surface model Model comparison |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000444939800001 |
WOS关键词 | EARTH SYSTEM MODELS ; GLOBAL VEGETATION MODEL ; LAND-SURFACE ; TEMPERATURE-ACCLIMATION ; PLANT RESPIRATION ; TERRESTRIAL BIOSPHERE ; THERMAL-ACCLIMATION ; PHOTOSYNTHESIS ; CO2 ; PROJECTIONS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/19573 |
专题 | 气候变化 |
作者单位 | Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Quetin, Gregory R.,Swann, Abigail L. S.. Sensitivity of Leaf Area to Interannual Climate Variation as a Diagnostic of Ecosystem Function in CMIP5 Carbon Cycle Models[J]. JOURNAL OF CLIMATE,2018,31(20):8607-8625. |
APA | Quetin, Gregory R.,&Swann, Abigail L. S..(2018).Sensitivity of Leaf Area to Interannual Climate Variation as a Diagnostic of Ecosystem Function in CMIP5 Carbon Cycle Models.JOURNAL OF CLIMATE,31(20),8607-8625. |
MLA | Quetin, Gregory R.,et al."Sensitivity of Leaf Area to Interannual Climate Variation as a Diagnostic of Ecosystem Function in CMIP5 Carbon Cycle Models".JOURNAL OF CLIMATE 31.20(2018):8607-8625. |
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