Climatic Drivers for Multi-Decadal Shifts in Solute Transport and Methane Production Zones within a Large Peat Basin [0.03%]
气候驱动的大型泥炭盆地溶质运移和甲烷生产区间几十年尺度的变化规律
Paul H Glaser,Donald I Siegel,Jeffrey P Chanton et al.
Paul H Glaser et al.
Northern peatlands are an important source for greenhouse gases but their capacity to produce methane remains uncertain under changing climatic conditions. We therefore analyzed a 43-year time series of pore-water chemistry to determine if ...
Quantifying the Impact of Atmospheric Transport Uncertainty on CO2 Surface Flux Estimates [0.03%]
大气传输不确定性对二氧化碳地表通量估计的影响量化
Andrew E Schuh,Andrew R Jacobson,Sourish Basu et al.
Andrew E Schuh et al.
We show that transport differences between two commonly used global chemical transport models, GEOS-Chem and TM5, lead to systematic space-time differences in modeled distributions of carbon dioxide and sulfur hexafluoride. The distribution...
Have Synergies Between Nitrogen Deposition and Atmospheric CO2 Driven the Recent Enhancement of the Terrestrial Carbon Sink? [0.03%]
氮沉降和大气二氧化碳的协同作用加强陆地碳汇了吗？
Michael O&#x;Sullivan,Dominick V Spracklen,Sarah A Batterman et al.
Michael O&#x;Sullivan et al.
The terrestrial carbon sink has increased since the turn of this century at a time of increased fossil fuel burning, yet the mechanisms enhancing this sink are not fully understood. Here we assess the hypothesis that regional increases in n...
Quantifying Degradative Loss of Terrigenous Organic Carbon in Surface Sediments Across the Laptev and East Siberian Sea [0.03%]
鄂毕河和东西伯利亚海陆源有机碳的退化损失量化研究表面沉积物中的 терrestrial organic carbon
Lisa Bröder,August Andersson,Tommaso Tesi et al.
Lisa Bröder et al.
Ongoing permafrost thaw in the Arctic may remobilize large amounts of old organic matter. Upon transport to the Siberian shelf seas, this material may be degraded and released to the atmosphere, exported off-shelf, or buried in the sediment...
Remobilization of Old Permafrost Carbon to Chukchi Sea Sediments During the End of the Last Deglaciation [0.03%]
末次冰消期结束时老永久冻土碳重新活化并汇入楚科奇海沉积物
Jannik Martens,Birgit Wild,Christof Pearce et al.
Jannik Martens et al.
Climate warming is expected to destabilize permafrost carbon (PF-C) by thaw-erosion and deepening of the seasonally thawed active layer and thereby promote PF-C mineralization to CO2 and CH4. A similar PF-C remobilization might have contrib...
High-Frequency Variability of Small-Particle Carbon Export Flux in the Northeast Atlantic [0.03%]
东北大西洋微粒碳输出通量的高频变化规律研究
Roséanne Bol,Stephanie A Henson,Anna Rumyantseva et al.
Roséanne Bol et al.
The biological carbon pump exports carbon fixed by photosynthesis out of the surface ocean and transfers it to the deep, mostly in the form of sinking particles. Despite the importance of the pump in regulating the air-sea CO2 balance, the ...
Soil Organic Matter Persistence as a Stochastic Process: Age and Transit Time Distributions of Carbon in Soils [0.03%]
土壤有机质持久性作为随机过程：土壤碳的年龄和传输时间分布
Carlos A Sierra,Alison M Hoyt,Yujie He et al.
Carlos A Sierra et al.
The question of why some types of organic matter are more persistent while others decompose quickly in soils has motivated a large amount of research in recent years. Persistence is commonly characterized as turnover or mean residence time ...
Natural and anthropogenic variations in atmospheric mercury deposition during the Holocene near Quelccaya Ice Cap, Peru [0.03%]
秘鲁奎里凯亚冰帽附近全新世自然和人为汞的沉积变化
Samuel A Beal,Meredith A Kelly,Justin S Stroup et al.
Samuel A Beal et al.
Mercury (Hg) is a toxic metal that is transported globally through the atmosphere. The emission of Hg from mineral reservoirs and subsequent recycling in surface reservoirs (i.e., soil/biomass, ocean, and atmosphere) are fundamental to the ...
Can Rates of Ocean Primary Production and Biological Carbon Export Be Related Through Their Probability Distributions? [0.03%]
海洋初级生产力和生物碳输送速率的概率分布有关联吗？
B B Cael,Kelsey Bisson,Christopher L Follett
B B Cael
We describe the basis of a theory for interpreting measurements of two key biogeochemical fluxes-primary production by phytoplankton (p, μg C · L-1 · day-1) and biological carbon export from the surface ocean by sinking particles (f, mg ...
The Role of External Inputs and Internal Cycling in Shaping the Global Ocean Cobalt Distribution: Insights From the First Cobalt Biogeochemical Model [0.03%]
外部输入和内部循环在塑造全球海洋钴分布中的作用：来自第一个钴生物地球化学模型的启示
Alessandro Tagliabue,Nicholas J Hawco,Randelle M Bundy et al.
Alessandro Tagliabue et al.
Cobalt is an important micronutrient for ocean microbes as it is present in vitamin B12 and is a co-factor in various metalloenzymes that catalyze cellular processes. Moreover, when seawater availability of cobalt is compared to biological ...