Negligible Quantities of Particulate Low-Temperature Pyrogenic Carbon Reach the Atlantic Ocean via the Amazon River [0.03%]
通过亚马逊河进入大西洋的微小量低温热解碳颗粒数量可忽略不计
C Häggi,E C Hopmans,E Schefuß et al.
C Häggi et al.
Particulate pyrogenic carbon (PyC) transported by rivers and aerosols, and deposited in marine sediments, is an important part of the carbon cycle. The chemical composition of PyC is temperature dependent and levoglucosan is a source-specif...
Constraints on the Cycling of Iron Isotopes From a Global Ocean Model [0.03%]
基于全球海洋模式的铁同位素循环研究的新限制条件
D König,T M Conway,M J Ellwood et al.
D König et al.
Although iron (Fe) is a key regulator of primary production over much of the ocean, many components of the marine iron cycle are poorly constrained, which undermines our understanding of climate change impacts. In recent years, a growing nu...
Interannual and Seasonal Drivers of Carbon Cycle Variability Represented by the Community Earth System Model (CESM2) [0.03%]
社区地球系统模型(CESM2)所表征的碳循环年际和季节驱动因素
William R Wieder,Zachary Butterfield,Keith Lindsay et al.
William R Wieder et al.
Earth system models are intended to make long-term projections, but they can be evaluated at interannual and seasonal time scales. Although the Community Earth System Model (CESM2) showed improvements in a number of terrestrial carbon cycle...
Deep Chlorophyll Maxima in the Global Ocean: Occurrences, Drivers and Characteristics [0.03%]
全球海洋叶绿素深极大值的分布、驱动因子和特征分析
M Cornec,H Claustre,A Mignot et al.
M Cornec et al.
Stratified oceanic systems are characterized by the presence of a so-called Deep Chlorophyll a Maximum (DCM) not detectable by ocean color satellites. A DCM can either be a phytoplankton (carbon) biomass maximum (Deep Biomass Maximum, DBM),...
Gerrit Müller,Janine Börker,Appy Sluijs et al.
Gerrit Müller et al.
We investigate if the commonly neglected riverine detrital carbonate fluxes might reconciliate several chemical mass balances of the global ocean. Particulate inorganic carbon (PIC) concentrations in riverine suspended sediments, that is, c...
Improved Constraints on Global Methane Emissions and Sinks Using δ 13C-CH4 [0.03%]
利用δ13C-CH4改进的全球甲烷排放和受纳量约束条件
X Lan,S Basu,S Schwietzke et al.
X Lan et al.
We study the drivers behind the global atmospheric methane (CH4) increase observed after 2006. Candidate emission and sink scenarios are constructed based on proposed hypotheses in the literature. These scenarios are simulated in the TM5 tr...
Stream Dissolved Organic Matter in Permafrost Regions Shows Surprising Compositional Similarities but Negative Priming and Nutrient Effects [0.03%]
永久冻土区流域溶解有机质 Composition相似但具有负面激发效应和营养效应
Ethan Wologo,Sarah Shakil,Scott Zolkos et al.
Ethan Wologo et al.
Permafrost degradation is delivering bioavailable dissolved organic matter (DOM) and inorganic nutrients to surface water networks. While these permafrost subsidies represent a small portion of total fluvial DOM and nutrient fluxes, they co...
The Influence of Glacial Cover on Riverine Silicon and Iron Exports in Chilean Patagonia [0.03%]
智利巴塔哥尼亚地区冰川覆盖对河流硅和铁输送的影响
Helena V Pryer,Jon R Hawkings,Jemma L Wadham et al.
Helena V Pryer et al.
Glaciated environments have been highlighted as important sources of bioavailable nutrients, with inputs of glacial meltwater potentially influencing productivity in downstream ecosystems. However, it is currently unclear how riverine nutri...
K Kaltenegger,W Winiwarter
K Kaltenegger
Displaying Nitrogen (N) indicators on a global grid poses unique opportunities to quantify environmental impacts from N application in different world regions under a variety of conditions. Such calculations require the use of maps showing ...
Climate-Driven Variability and Trends in Plant Productivity Over Recent Decades Based on Three Global Products [0.03%]
基于三种全球数据产品过去几十年植被生产力的气候年际变率和趋势分析
Michael O&#x;Sullivan,William K Smith,Stephen Sitch et al.
Michael O&#x;Sullivan et al.
Variability in climate exerts a strong influence on vegetation productivity (gross primary productivity; GPP), and therefore has a large impact on the land carbon sink. However, no direct observations of global GPP exist, and estimates rely...