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Showing papers in "Atmospheric Environment in 2017"


Journal ArticleDOI
TL;DR: In this paper, the authors examined published literature on neighbourhood air quality modifications by green interventions and provided a better understanding of the interactions between vegetation and surrounding built-up environments and ascertain means of reducing local air pollution exposure using green infrastructure.

563 citations


Journal ArticleDOI
TL;DR: In this article, the authors presented a comprehensive global shipping emission inventory and the global activities of ships for the year 2015 using the Ship Traffic Emission Assessment Model (STEAM3), which uses Automatic Identification System data to describe the traffic activities.

245 citations


Journal ArticleDOI
TL;DR: In this article, the authors summarize the advances in real-time PM chemical characterization, focusing on the most widely used mass spectrometric and ion chromatographic techniques, and highlight the new insights gained from those findings and suggest future directions for further advancing our understanding of PM pollution in China via real time chemical characterization.

191 citations


Journal ArticleDOI
TL;DR: In this article, a novel machine learning algorithm, Geographically-Weighted Gradient Boosting Machine (GW-GBM), was developed by improving GBM through building spatial smoothing kernels to weigh the loss function.

170 citations


Journal ArticleDOI
TL;DR: A comprehensive review of published results from the last 30 years regarding the sources and atmospheric characteristics of particles and ozone in the Metropolitan Area of Sao Paulo (MASP) is presented in this paper.

168 citations


Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper developed a generalized regression neural network (GRNN) model to estimate PM2.5 concentrations at a national scale, and different assessment experiments are undertaken in time and space, to comprehensively evaluate and compare the performance of widely used models.

168 citations


Journal ArticleDOI
TL;DR: A novel land use random forest (LURF) model is developed and its accuracy and precision is compared to a LUR model for elemental components of PM in the urban city of Cincinnati, Ohio to provide more accurate exposure assessment.

168 citations


Journal ArticleDOI
TL;DR: In this article, the authors investigated the contribution of residential coal combustion to PM 2.5 pollution in the Beijing-Tianjin-Hebei (BTH) region.

156 citations


Journal ArticleDOI
TL;DR: In this article, a hybrid early-warning system was successfully developed, composed of forecasting and evaluation, based on the theory of decomposition and ensemble and combined with the advanced data processing technique, support vector machine, the latest bio-inspired optimization algorithm and the leave-one-out strategy for deciding weights.

152 citations


Journal ArticleDOI
TL;DR: In this paper, the authors present a national-scale model analysis on the sources and processes of inorganic nitrogen deposition over China using the GEOS-Chem model at 1/2°-×-1/3° horizontal resolution.

140 citations


Journal ArticleDOI
TL;DR: In this article, the authors developed a high-resolution Beijing-Tianjin-Hebei (BTH) regional air pollutants emission inventory for the year 2013 using a bottom-up approach based on facility-level activity data obtained from multiple data sources.

Journal ArticleDOI
TL;DR: Wang et al. as discussed by the authors collected data from 187 Chinese cities during January 2014 and November 2016 to uncover the spatial and temporal variation of the pollutants in China, and the results of geographical weight regression (GWR) showed that more significant correlations among the pollutants and the highest air quality index appeared in the south of China.

Journal ArticleDOI
TL;DR: In this article, the authors investigated sources of black carbon (BC) influencing air quality in Ontario, Canada were investigated using nine concurrent Aethalometer datasets collected between June 2015 and May 2016.

Journal ArticleDOI
TL;DR: This study attempted to realize the relevance analysis and short-term prediction of PM 2.5 concentrations in Beijing, China, using multi-source data mining and found that during these factors, the value of average wind speed, the concentrations of CO, NO 2 , PM 10 , and the daily number of microblog entries with key words ‘Beijing; Air pollution’ show high mathematical correlation.

Journal ArticleDOI
TL;DR: In this article, a first comprehensive campaign was conducted at an urban roadside in Xi'an, China in summer 2016, and a total of 57 VOCs, as known as critical surface ozone (O3) precursors, and other trace gases were measured simultaneously during the sampling period.

Journal ArticleDOI
TL;DR: In this paper, the authors conducted highly time-resolved measurements of inorganic ions associated with PM2.5 at an urban site in Beijing from 10 February to 19 March, 2015.

Journal ArticleDOI
TL;DR: In this article, in-situ and space-borne observations reveal an extremely high loading of particulates over the Indo-Gangetic Plains (IGP), all year around, since the pollutants undergo long range transport from their source regions to the Indian mainland, leading to an outflow of continental pollutants into the Bay of Bengal (BoB), and a net advection of desert dust aerosols into the IGP from southwest Asia (SW-Asia), northwest India (NW-India) and northern Africa (N-Africa) during summers.

Journal ArticleDOI
TL;DR: Ochoa Gonzalez et al. as discussed by the authors investigated the isotope composition of Pb in the urban environment and developed these isotope systems as possible source tracers, finding significant contribution from tire wear.

Journal ArticleDOI
TL;DR: In this article, the authors present emission estimates of isoprene and monoterpenes over the period 1901-2 100 based on the dynamic global vegetation model LPJ-GUESS, including the effects of all known important drivers.

Journal ArticleDOI
TL;DR: In this article, the authors assess the contribution of emission sources to PM10 and PM2.5 concentration levels and their long-term variability (over 5-10 years), in the two largest metropolitan urban areas in Greece (Athens and Thessaloniki).

Journal ArticleDOI
Zhengning Xu1, Xin Huang1, Wei Nie1, Xuguang Chi1, Zheng Xu1, Longfei Zheng1, Peng Sun1, Aijun Ding1 
TL;DR: In order to understand the influence of synoptic condition and holiday effects on ozone production in the Yangtze River Delta region, China, concentrations of speciated volatile organic compounds (VOCs) and O3 as well as other relevant trace gases were simultaneously measured at the Station for Observing Regional Processes of the Earth System (SORPES) in Nanjing around the National Day holidays of China in 2014, which featured substantial change of emissions and dominated by typical anti-cyclones as mentioned in this paper.

Journal ArticleDOI
TL;DR: In this article, the authors investigated the impacts of travel mode, traffic load, and street configuration on PM2.5, equivalent black carbon (e BC ), and number of sub-micron particles (N p ) for commuters in Bogota, Colombia.

Journal ArticleDOI
TL;DR: In this article, a top-down method for estimating global anthropogenic heat emission (AHE), with a high spatial resolution of 30 arc-seconds and temporal resolution of 1-h, was developed.

Journal ArticleDOI
TL;DR: The sensitivity of POCP values to variation of a number of kinetic and mechanistic parameters has been investigated in this paper, and it is shown that POCPs for VOCs can be rationalized in terms of their molecular structure and OH reactivity.

Journal ArticleDOI
TL;DR: In this article, the authors measured concentrations of fine particle matter (PM 2.5 ), black carbon (BC), and ultrafine particles (UFP) for 161 commutes between 2014 and November 2015 in Sacramento, CA.

Journal ArticleDOI
TL;DR: The authors developed an empirical model to estimate the spatial variations in the sensitivities of wheat, maize and soybean yields to ozone exposures and temperature extremes in the US and Europe using a composite of multidecadal datasets, fully correcting for ozone-temperature covariation.

Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper measured the odour threshold of 51 detected compounds using a uniform methodology to minimize the imprecision of citing odour thresholds from disparate literature, which is used to convert the individual chemical concentration into the OAV, which was used as a surrogate of odour concentration.

Journal ArticleDOI
TL;DR: In this paper, the authors identify the major components and heavy metals in PM2.5 along with their seasonal trends and associated sources, which can help in identifying their health effects and sources, and also adopting effective control strategies.

Journal ArticleDOI
TL;DR: The Regional Atmospheric Environmental Modeling System for eastern China (RAEMS) as discussed by the authors is an operational numerical system to forecast near surface atmospheric pollutants such as PM2.5 and O3 over the eastern China region.

Journal ArticleDOI
TL;DR: Wang et al. as mentioned in this paper analyzed long term trend of NO2 and SO2 levels (2005-2014), retrieved from Ozone Monitoring Instrument (OMI) board on the NASA's Aura satellite, in an important region of China.