2023年3月29日 · Anthropogenic emissions of carbon dioxide (CO 2), methane (CH 4) and nitrous oxide (N 2 O) have made significant contributions to global warming since the pre-industrial period and are therefore...

2025年3月14日 · Estimates of the globally-averaged CH 4 abundance (monthly- and annually-averaged means), and the annual increase, are updated every month as new samples are returned to Boulder, measured for CH 4, and added to the analysis. Adding new, more recent data improves the accuracy of the initial estimate by increasing the spatial density of data and ...

Nitrous oxide (N 2 O) and methane (CH 4) are chemically reactive greenhouse gases with well-documented atmospheric concentration increases that are attributable to anthropogenic activities. We quantified the link between N 2 O and CH 4 emissions through the coupled chemistries of the stratosphere and troposphere.

Nitrogen addition was reported to increase CH 4 and N 2 O production and inhibit CH 4 consumption in recent studies, which may shift the net GHG balance toward a source of CO 2 equivalents (CO 2 eqs) and could offset 53 to 76% of increased C sequestration induced by N deposition across terrestrial ecosystems .

检测气体：甲烷CH4、一氧化二氮N2O，选配二氧化碳CO2. 范围分辨率： CH4：量程0-1000ppm、分辨率0.01ppm，进口高精度TDLAS激光传感器. N2O：量程0-100ppm、分辨率0.01ppm，进口长光程红外传感器. 精度误差：≤±2%F.S.（更高精度可订制） 重 复 性：≤±1%

2011年5月13日 · In this study, we used a process-based ecosystem model driven by multiple environmental factors to examine the net warming potential resulting from net exchanges of CO 2, CH 4, and N 2 O between China's terrestrial ecosystems and the atmosphere during 1961–2005.

Measurements of CH 4, N 2 O, and SF 6 from a globally-distributed network of air sampling sites are first smoothed in time. Values are extracted from the smooth curves at equally-spaced intervals (48 time steps per year), then curves are fitted to these values as a function of latitude.

2020年3月11日 · 估算了全球ch4和n2o的排放通量；探讨了气候、co2、o3、氮沉降、土地利用变化、氮肥施用等多种环境因素对ch4和n2o排放年际变化的影响；比较了ch4和n2o的排放通量在区域、生态系统类型和纬度上的差异。

本文利用高光谱分辨率的辐射传输模式,计算了ch 4 、n 2 o在晴空大气和有云大气条件下的瞬时辐射效率和平流层调整的辐射效率,以及它们的全球增温潜能(gwp)和全球温变潜能(gtp),并根据模式结果拟合了ch 4 和n 2 o的辐射强迫的简单计算公式。

2025年1月13日 · 中国是世界上最大的CH 4 和N 2 O排放国，其排放量分别占全球的17.88%和16.67%。 同时，中国作为最大的工业化国家，拥有全球最全面的工业供应链，其发展不可避免地造成大量能源消耗及废物废水的排放。 为了在2060年前实现碳中和目标，并实现《联合国气候变化框架公约》提出的净零排放承诺目标，聚焦能源、工业过程和产品使用（IPPU）、废弃物和废水部门等与工业化相关部门的CH 4 和N...