Changes to Carbon Isotopes in Atmospheric CO2 Over the Industrial Era and Into the Future [0.03%]
工业时代以来大气二氧化碳碳同位素变化及其未来趋势
Heather Graven,Ralph F Keeling,Joeri Rogelj
Heather Graven
In this "Grand Challenges" paper, we review how the carbon isotopic composition of atmospheric CO2 has changed since the Industrial Revolution due to human activities and their influence on the natural carbon cycle, and we provide new estim...
Contrasting Regional Carbon Cycle Responses to Seasonal Climate Anomalies Across the East-West Divide of Temperate North America [0.03%]
北美东西部温带地区碳循环对季节性气候异常的差异响应
B Byrne,J Liu,A A Bloom et al.
B Byrne et al.
Across temperate North America, interannual variability (IAV) in gross primary production (GPP) and net ecosystem exchange (NEE) and their relationship with environmental drivers are poorly understood. Here, we examine IAV in GPP and NEE an...
Time of Emergence and Large Ensemble Intercomparison for Ocean Biogeochemical Trends [0.03%]
海洋生物化学趋势的显现时间及大量集合对比研究
Sarah Schlunegger,Keith B Rodgers,Jorge L Sarmiento et al.
Sarah Schlunegger et al.
Anthropogenically forced changes in ocean biogeochemistry are underway and critical for the ocean carbon sink and marine habitat. Detecting such changes in ocean biogeochemistry will require quantification of the magnitude of the change (an...
A Cross-System Comparison of Dark Carbon Fixation in Coastal Sediments [0.03%]
基于沿海沉积物的暗碳固定作用的跨系统比较研究
Diana Vasquez-Cardenas,Filip J R Meysman,Henricus T S Boschker
Diana Vasquez-Cardenas
Dark carbon fixation (DCF) by chemoautotrophic microorganisms can sustain food webs in the seafloor by local production of organic matter independent of photosynthesis. The process has received considerable attention in deep sea systems, su...
Biological Control of Chromium Redox and Stable Isotope Composition in the Surface Ocean [0.03%]
海洋生物操控铬的氧化态及其稳定同位素组成
David J Janssen,Jörg Rickli,Paul D Quay et al.
David J Janssen et al.
While chromium stable isotopes (δ53Cr) have received significant attention for their utility as a tracer of oxygen availability in the distant geological past, a mechanistic understanding of modern oceanic controls on Cr and δ53Cr is stil...
A spatially explicit, empirical estimate of tree-based biological nitrogen fixation in forests of the United States [0.03%]
美国森林树木生物固氮的空间显示和实证估算
Anika Staccone,Wenying Liao,Steven Perakis et al.
Anika Staccone et al.
Quantifying human impacts on the N cycle and investigating natural ecosystem N cycling depend on the magnitude of inputs from natural biological nitrogen fixation (BNF). Here, we present two bottom-up approaches to quantify tree-based symbi...
Stephanie Henson,Fred Le Moigne,Sarah Giering
Stephanie Henson
The export of organic carbon from the surface ocean forms the basis of the biological carbon pump, an important planetary carbon flux. Typically, only a small fraction of primary productivity (PP) is exported (quantified as the export effic...
Insights Into the Major Processes Driving the Global Distribution of Copper in the Ocean From a Global Model [0.03%]
关于海洋中铜分布的全球过程及模型研究的新认识
Camille Richon,Alessandro Tagliabue
Camille Richon
Copper (Cu) is an unusual micronutrient as it can limit primary production but can also become toxic for growth and cellular functioning under high concentrations. Cu also displays an atypical linear profile, which will modulate its availab...
Reassessing Southern Ocean Air-Sea CO2 Flux Estimates With the Addition of Biogeochemical Float Observations [0.03%]
借助生物地球化学浮标观测重新评估南大洋空气-海水CO₂通量估算值
Seth M Bushinsky,Peter Landschützer,Christian Rödenbeck et al.
Seth M Bushinsky et al.
New estimates of pCO2 from profiling floats deployed by the Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) project have demonstrated the importance of wintertime outgassing south of the Polar Front, challenging the acc...
Beyond Static Benchmarking: Using Experimental Manipulations to Evaluate Land Model Assumptions [0.03%]
超越静态基准测试：使用实验操作评估陆地模型假设
William R Wieder,David M Lawrence,Rosie A Fisher et al.
William R Wieder et al.
Land models are often used to simulate terrestrial responses to future environmental changes, but these models are not commonly evaluated with data from experimental manipulations. Results from experimental manipulations can identify and ev...