Statistical and machine learning methods for evaluating trends in air quality under changing meteorological conditions [0.03%]
气象条件变化下的空气质量管理的统计和机器学习方法研究进展及挑战
Minghao Qiu,Corwin Zigler,Noelle E Selin
Minghao Qiu
Evaluating the influence of anthropogenic-emission changes on air quality requires accounting for the influence of meteorological variability. Statistical methods such as multiple linear regression (MLR) models with basic meteorological var...
Declines and peaks in NO2 pollution during the multiple waves of the COVID-19 pandemic in the New York metropolitan area [0.03%]
纽约都会区在COVID-19疫情多阶段发展中NO2污染的降低和升高
Maria Tzortziou,Charlotte F Kwong,Daniel Goldberg et al.
Maria Tzortziou et al.
The COVID-19 pandemic created an extreme natural experiment in which sudden changes in human behavior and economic activity resulted in significant declines in nitrogen oxide (NO x ) emissions, immediately after strict lockdowns were impose...
Ammonium-adduct chemical ionization to investigate anthropogenic oxygenated gas-phase organic compounds in urban air [0.03%]
用铵复合化学电离法研究城市空气中的人工氧化气相有机化合物
Peeyush Khare,Jordan E Krechmer,Jo Ellen Machesky et al.
Peeyush Khare et al.
Volatile chemical products (VCPs) and other non-combustion-related sources have become important for urban air quality, and bottom-up calculations report emissions of a variety of functionalized compounds that remain understudied and uncert...
The pathway of impacts of aerosol direct effects on secondary inorganic aerosol formation [0.03%]
气溶胶直接效应影响二次无机气溶胶生成的途径研究
Jiandong Wang,Jia Xing,Shuxiao Wang et al.
Jiandong Wang et al.
Airborne aerosols reduce surface solar radiation through light scattering and absorption (aerosol direct effects, ADEs), influence regional meteorology, and further affect atmospheric chemical reactions and aerosol concentrations. The inhib...
Comprehensive evaluations of diurnal NO2 measurements during DISCOVER-AQ 2011: effects of resolution-dependent representation of NO x emissions [0.03%]
基于排放分辨率的NOx排放量对昼夜间NO2观测影响的评估——兼论DISCOVER-AQ 2011实验数据的价值
Jianfeng Li,Yuhang Wang,Ruixiong Zhang et al.
Jianfeng Li et al.
Nitrogen oxides (NO x =NO+NO2) play a crucial role in the formation of ozone and secondary inorganic and organic aerosols, thus affecting human health, global radiation budget, and climate. The diurnal and spatial variations in NO2 are func...
Opportunistic experiments to constrain aerosol effective radiative forcing [0.03%]
利用机会主义实验约束气溶胶有效辐射强迫
Matthew W Christensen,Andrew Gettelman,Jan Cermak et al.
Matthew W Christensen et al.
Aerosol-cloud interactions (ACIs) are considered to be the most uncertain driver of present-day radiative forcing due to human activities. The nonlinearity of cloud-state changes to aerosol perturbations make it challenging to attribute cau...
Modeling secondary organic aerosol formation from volatile chemical products [0.03%]
挥发性化学品产物二次有机气溶胶形成机制的模拟研究
Elyse A Pennington,Karl M Seltzer,Benjamin N Murphy et al.
Elyse A Pennington et al.
Volatile chemical products (VCPs) are commonly-used consumer and industrial items that are an important source of anthropogenic emissions. Organic compounds from VCPs evaporate on atmospherically relevant time scales and include many specie...
The diurnal cycle of the smoky marine boundary layer observed during August in the remote southeast Atlantic [0.03%]
2017年8月东南大西洋烟雾层的观测研究
Jianhao Zhang,Paquita Zuidema
Jianhao Zhang
Ascension Island (8° S, 14.5° W) is located at the northwestern edge of the south Atlantic stratocumulus deck, with most clouds in August characterized by surface observers as "stratocumulus and cumulus with bases at different levels", an...
Unraveling pathways of elevated ozone induced by the 2020 lockdown in Europe by an observationally constrained regional model using TROPOMI [0.03%]
基于TROPOMI数据和观测约束的区域化学传输模式解析欧洲疫情期间地面O₃浓度变化机制
Amir H Souri,Kelly Chance,Juseon Bak et al.
Amir H Souri et al.
Questions about how emissions are changing during the COVID-19 lockdown periods cannot be answered by observations of atmospheric trace gas concentrations alone, in part due to simultaneous changes in atmospheric transport, emissions, dynam...
Technical note: AQMEII4 Activity 1: evaluation of wet and dry deposition schemes as an integral part of regional-scale air quality models [0.03%]
技术说明：AQMEII4活动1：评估区域尺度空气质量模型中湿沉降和干沉降方案
Stefano Galmarini,Paul Makar,Olivia E Clifton et al.
Stefano Galmarini et al.
We present in this technical note the research protocol for phase 4 of the Air Quality Model Evaluation International Initiative (AQMEII4). This research initiative is divided into two activities, collectively having three goals: (i) to def...