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| 1 | Enhanced secondary pollution offset reduction of primary emissions during COVID-19 lockdown in China显示文摘To control the spread of the 2019 novel coronavirus(COVID-19),China imposed nationwide restrictions on the movement of its population(lockdown)after the Chinese New Year of 2020,leading to large reductions in economic activities and associated emissions.Despite such large decreases in primary pollution,there were nonetheless several periods of heavy haze pollution in eastern China,raising questions about the well-established relationship between human activities and air quality.Here,using comprehensive measurements and modeling,we show that the haze during the COVID lockdown was driven by enhancements of secondary pollution.In particular,large decreases in NOx emissions from transportation increased ozone and nighttime NO_(3)radical formation,and these increases in atmospheric oxidizing capacity in turn facilitated the formation of secondary particulate matter.Our results,afforded by the tragic natural experiment of the COVID-19 pandemic,indicate that haze mitigation depends upon a coordinated and balanced strategy for controlling multiple pollutants. | Xin Huang Aijun Ding Jian Gao Bo Zheng Derong Zhou Ximeng Qi Rong Tang Jiaping Wang Chuanhua Ren Wei Nie Xuguang Chi Zheng Xu Liangduo Chen Yuanyuan Li Fei Che Nini Pang Haikun Wang Dan Tong Wei Qin Wei Cheng Weijing Liu Qingyan Fu Baoxian Liu Fahe Chai Steven JDavis Qiang Zhang Kebin He | 2021 | National Science Review2021，8，2： | 47 |
| 2 | Aerosol and boundary-layer interactions and impact on air quality显示文摘Air quality is concerned with pollutants in both the gas phase and solid or liquid phases. The latter are referred to as aerosols, which are multifaceted agents affecting air quality, weather and climate through many mechanisms. Unlike gas pollutants, aerosols interact strongly with meteorological variables with the strongest interactions taking place in the planetary boundary layer(PBL). The PBL hosting the bulk of aerosols in the lower atmosphere is affected by aerosol radiative effects. Both aerosol scattering and absorption reduce the amount of solar radiation reaching the ground and thus reduce the sensible heat fluxes that drive the diurnal evolution of the PBL. Moreover, aerosols can increase atmospheric stability by inducing a temperature inversion as a result of both scattering and absorption of solar radiation, which suppresses dispersion of pollutants and leads to further increases in aerosol concentration in the lower PBL.Such positive feedback is especially strong during severe pollution events. Knowledge of the PBL is thus crucial for understanding the interactions between air pollution and meteorology. A key question is how the diurnal evolution of the PBL interacts with aerosols, especially in vertical directions, and affects air quality.We review the major advances in aerosol measurements, PBL processes and their interactions with each other through complex feedback mechanisms, and highlight the priorities for future studies. | Zhanqing Li Jianping Guo Aijun Ding Hong Liao Jianjun Liu Yele Sun Tijian Wang Huiwen Xue Hongsheng Zhang Bin Zhu | 2017 | National Science Review2017，4，6： | 37 |
| 3 | Climatic trends of different intensity heavy precipitation events concentration in China显示文摘Based on 740 stations of daily precipitation datasets in China, the precipitation- concentration degree (PCD)and precipitation-concentration period (PCP)ofdifferentintensity durative precipitation eventswere calculated to analyze theirstatisticalcharacteristics,mainly including spatial and temporaldistributions,variations and climatic trends ofthe two parameters ofthe durative heavy precipitation events in China.Itis proved thatthese two parameters ofheavy rainfallcan display the temporalinhomogeneity in the precipitation field.And itis also found thatthere is a good positive relationship between the precipitation-concentration degree and annualrainfallamountin the Eastern and CentralChina.Thismethod can beapplied in flood assessmentand climatechangefields. | XIE Zhiqing DU Yin JIANG Aijun DING Yuguo | 2005 | Journal of Geographical Sciences2005，15，4： | 15 |
| 4 | Observation-based Estimation of Aerosol-induced Reduction of Planetary Boundary Layer Height显示文摘Radiative aerosols are known to influence the surface energy budget and hence the evolution of the planetary boundary layer. In this study, we develop a method to estimate the aerosol-induced reduction in the planetary boundary layer height(PBLH) based on two years of ground-based measurements at a site, the Station for Observing Regional Processes of the Earth System(SORPES), at Nanjing University, China, and radiosonde data from the meteorological station of Nanjing. The observations show that increased aerosol loads lead to a mean decrease of 67.1 W m-2for downward shortwave radiation(DSR) and a mean increase of 19.2 W m-2for downward longwave radiation(DLR), as well as a mean decrease of 9.6W m-2for the surface sensible heat flux(SHF) in the daytime. The relative variations of DSR, DLR and SHF are shown as a function of the increment of column mass concentration of particulate matter(PM2.5). High aerosol loading can significantly increase the atmospheric stability in the planetary boundary layer during both daytime and nighttime. Based on the statistical relationship between SHF and PM2.5column mass concentrations, the SHF under clean atmospheric conditions(same as the background days) is derived. In this case, the derived SHF, together with observed SHF, are then used to estimate changes in the PBLH related to aerosols. Our results suggest that the PBLH decreases more rapidly with increasing aerosol loading at high aerosol loading. When the daytime mean column mass concentration of PM2.5reaches 200 mg m-2, the decrease in the PBLH at 1600 LST(local standard time) is about 450 m. | Jun ZOU Jianning SUN Aijun DING Minghuai WANG Weidong GUO Congbin FU | 2017 | Advances in Atmospheric Sciences2017，34，9： | 8 |
| 5 | 疫情期间全球空气质量变化:臭氧响应的区域间差异显示文摘疫情期间全球各地一次排放大幅削减,而臭氧等二次污染的响应则存在着区域间差异.结合地面和卫星观测发现,同在氮氧化物大幅下降的情况下,臭氧在东亚和欧洲呈现出可达14ppb的上升信号,而北美则下降为主(约2–4ppb).我们结合气象分析和臭氧敏感性进一步讨论了臭氧响应差异性的原因,一方面受臭氧与前体物间关系的影响;另一方面来自于气象,尤其是温度.研究明晰了人为排放,化学和气象三者的内在关联,强调了在臭氧控制过程中考虑前体物削减和气象条件协同的重要性. | Rong Tang Xin Huang Derong Zhou Haikun Wang Jiawei Xu Aijun Ding | 2021 | Atmospheric and Oceanic Science Letters2021，14，4： | 5 |
| 6 | Long-term observation of air pollution-weather/climate interactions at the SORPES station: a review and outlook显示文摘 | Aijun Ding Wei Nie Xin Huang Xuguang Chi Jianning Sun Veli-Matti Kerminen Zheng Xu Weidong Guo Tuukka Petaja Xiuqun Yang Markku Kulmala Congbin Fu | 2016 | Frontiers of Environmental Science & Engineering2016，10，5： | 3 |
| 7 | On secondary new particle formation in China显示文摘新大气的喷雾器粒子的形成是被观察了发生在甚至重重地弄脏的环境的全球现象。然而,在所有环境,看起来是冷凝作用水池的阀值价值(由于先存在喷雾器粒子) 在哪个以后 3 个 nm 粒子的形成率不再被检测。在中国,新粒子生产在很高的污染层次被观察了(冷凝作用水池在几个大城市,包括的北京,上海和南京以及在珀尔河三角洲(PRD ) 的大约 0.1 s -1) 。这里,我们总结从这些研究获得的最近的调查结果并且讨论这些调查结果将在未来研究和政策上有的各种各样的含意。 | Markku Kulmala Tuukka Petaja Veli-Matti Kerminen Joni Kujansuu Taina Ruuskanen Aijun Ding Wei Nie Min HU Zhibin Wang Zhijun Wu Lin Wang Douglas R. Worsnop | 2016 | Frontiers of Environmental Science & Engineering2016，10，5： | 3 |
| 8 | Phosphorus release from cyanobacterial blooms in Meiliang Bay of Lake Taihu, China显示文摘 | Xiaoming Chuai Wei Ding Xiaofeng Chen Xiaolin Wang Aijun Miao Beidou Xi Lianshen He Liuyan Yang | 2011 | Ecological Engineering2011，，6： | 3 |
| 9 | Comparison of carbonaceous particulate matter emission factors among different solid fuels burned in residential stoves显示文摘 | Guofeng Shen Miao Xue Yuanchen Chen Chunli Yang Wei Li Huizhong Shen Ye Huang Yanyan Zhang Han Chen Ying Zhu Haisuo Wu Aijun Ding Shu Tao | 2014 | Atmospheric Environment2014，，： | 2 |
| 10 | Recent Progress in Atmospheric Chemistry Research in China: Establishing a Theoretical Framework for the “Air Pollution Complex”显示文摘Atmospheric chemistry research has been growing rapidly in China in the last 25 years since the concept of the“air pollution complex”was first proposed by Professor Xiaoyan TANG in 1997.For papers published in 2021 on air pollution(only papers included in the Web of Science Core Collection database were considered),more than 24000 papers were authored or co-authored by scientists working in China.In this paper,we review a limited number of representative and significant studies on atmospheric chemistry in China in the last few years,including studies on(1)sources and emission inventories,(2)atmospheric chemical processes,(3)interactions of air pollution with meteorology,weather and climate,(4)interactions between the biosphere and atmosphere,and(5)data assimilation.The intention was not to provide a complete review of all progress made in the last few years,but rather to serve as a starting point for learning more about atmospheric chemistry research in China.The advances reviewed in this paper have enabled a theoretical framework for the air pollution complex to be established,provided robust scientific support to highly successful air pollution control policies in China,and created great opportunities in education,training,and career development for many graduate students and young scientists.This paper further highlights that developing and low-income countries that are heavily affected by air pollution can benefit from these research advances,whilst at the same time acknowledging that many challenges and opportunities still remain in atmospheric chemistry research in China,to hopefully be addressed over the next few decades. | Tong ZHU Mingjin TANG Meng GAO Xinhui BI Junji CAO Huizheng CHE Jianmin CHEN Aijun DING Pingqing FU Jian GAO Yang GAO Maofa GE Xinlei GE Zhiwei HAN Hong HE Ru-Jin HUANG Xin HUANG Hong LIAO Cheng LIU Huan LIU Jianguo LIU Shaw Chen LIU Keding LU Qingxin MA Wei NIE Min SHAO Yu SONG Yele SUN Xiao TANG Tao WANG Tijian WANG Weigang WANG Xuemei WANG Zifa WANG Yan YIN Qiang ZHANG Weijun ZHANG Yanlin ZHANG Yunhong ZHANG Yu ZHAO Mei ZHENG Bin ZHU Jiang ZHU | 2023 | Advances in Atmospheric Sciences2023，40，8： | 2 |
| 11 | Cloning,Expression and Activity Analysis of a Bacterial Serine Protease显示文摘In the study,a serine protease gene from Pantoea ananatis was cloned and expressed in prokaryotic cells. The activity of recombinant serine protease was analyzed. The results showed that the recombinant serine protease gene was 1 062 bp,encoding 352 amino acids; the optimal reaction temperature for recombinant serine protease was 50 ℃,and the optimal p H was 5. 0. The serine protease could be developed into a new tool enzyme in biological engineering and food processing. | Jinhui HOU Jishuang CHEN Bosong LUO Aijun DING Yanhua HU | 2015 | Agricultural Biotechnology2015，4，1： | 2 |
| 12 | Unravelling the competitive effect of microstructural features on the fracture toughness and tensile properties of near beta titanium alloys显示文摘The competitive effect of microstructural features including primaryα(α_(p)),secondaryα(α_(s)),grain boundaryα(α_(GB)) and β grain size on mechanical properties of a near β Ti alloy were studied with two heat treatment processes.The relative effect of β grain size and STA(solution treatment and ageing)processing parameters on mechanical properties were quantitatively explored by the application of Taguchi method.These results were further explained via correlating microstructure with the fracture toughness and tensile properties.It was found that large numbers of fine as precipitates and continuous α_(s) played greater roles than other features,resulting in a high strength and very low ductility(<2%)of STA process samples.The β grain size had a negative correlation with fracture toughness.In the samples prepared by BASCA( β anneal slow cooling and ageing)process,improved ductility and fracture toughness were obtained due to a lower density ofα;precipitates,a basket-weave structure and zigzag morphology of α_(GB).For this heat treatment,an increase in prior β grain size had an observable positive effect on fracture toughness.The contradictory effect of β grain size on fracture toughness found in literature was for the first time explained.It was shown that the microstructure obtained from different processes after β solution has complex effect on mechanical properties.This complexity derived from the competition between microstructure features and the overall sum of their effect on fracture toughness and tensile properties.A novel table was proposed to quasi-quantitatively unravel these competitive effects. | Yang Liu Samuel C.V.Lim Chen Ding Aijun Huang Matthew Weyland | 2022 | Journal of Materials Science & Technology2022，，2： | 2 |
| 13 | Human four-and-a-half LIM family members suppress tumor cell growth through a TGF-[beta]-like signaling pathway显示文摘 | Ding Lihua Wang Zhaoyun Yan Jinghua Yang Xiao Liu Aijun Qiu Weiyi Zhu Jianhua Han Juqiang Zhang Hao Lin Jing Cheng Long Qin Xi Niu Chang Yuan Bin Wang Xiaohui Zhu Cui Zhou Yan Li Jiezhi Song Haifeng Huang Cuifen Ye Qinong | 2009 | Journal of Clinical Investigation2009，，2： | 1 |
| 14 | Ozone and fine particle in the western Yangtze River Delta: an overview of 1 yr data at the SORPES station 显示文摘 | DING Aijun FU Congbin YANG Xiuqun | 2013 | Atmospheric Chemistry and Physics2013，13，11： | 1 |
| 15 | Simulation of sea-land breezes and a discussion of their implications on the transport of air pollution during a multi-day ozone episode in the Pearl River Delta of China 显示文摘 | Ding Aijun Wang Tao Zhao Ming | 2004 | Atmospheric Environment2004，38，39： | 1 |
| 16 | MAX-DOAS and OMI Measurements of Tropospheric NO2 and HCHO over Eastern China显示文摘In this paper,we present long term observations of atmospheric nitrogen dioxide(NO2)and formaldehyde(HCHO)in Nanjing using a Multi-AXis Differential Optical Absorption Spectroscopy(MAX-DOAS)instrument.Ground based MAX-DOAS measurements were performed from April 2013 to February 2017.The MAX-DOAS measurements of NO2 and HCHO vertical column densities(VCDs)are used to validate OMI satellite observations over Nanjing.The comparison shows that the OMI observations of NO2 correlate well with the MAX-DOAS data with Pearson correlation coefficient(R)of 0.91.The comparison result of MAX-DOAS and OMI observations of HCHO VCD shows a good agreement with R of 0.75 and the slope of the regression line is 0.99.The age weighted backward propagation approach is applied to the MAX-DOAS measurements of NO2 and HCHO to reconstruct the spatial distribution of NO2 and HCHO over the Yangtze River Delta during summer and winter time.The reconstructed NO2 fields show a distinct agreement with OMI satellite observations.However,due to the short atmospheric lifetime of HCHO,the backward propagated HCHO data does not show a strong spatial correlation with the OMI HCHO observations.The result shows the MAX-DOAS measurements are sensitive to the air pollution transportation in the Yangtze River Delta,indicating the air quality in Nanjing is significantly influenced by regional transportation of air pollutants. | Ka-Lok CHAN Zhuoru WANG Aijun DING Klaus-Peter HEUE Nan HAO Mark WENIG | 2020 | Journal of Geodesy and Geoinformation Science2020，3，4： | 1 |
| 17 | Transport of north China air pollution by midlatitude cyclones:case study of aircraft measurements in summer 2007显示文摘 | DING Aijun WANG Tao XUE Likun | 2009 | J Geophys Res2009，114，： | 1 |
| 18 | Ozone and fineparticle in the western Yangtze River Delta: an overview of 1-yrdata at the SORPES station显示文摘 | DING Aijun FU Congbin YANG Xiuqun | 2013 | Atmospheric Chemistry andPhysics2013，13，11： | 1 |
| 19 | ENSO and Southeast Asian biomass burning modulate subtropical trans-Pacific ozone transport显示文摘Trans-Pacific transport of enhanced ozone plumes has been mainly attributed to fossil fuel combustion in Asia in spring, but less attention has been paid to vegetation fires in Asia. Here we show that the El Ni?noSouthern Oscillation(ENSO)-modulated fires in Southeast Asia, rather than Asian fossil fuel plumes,dominate the interannual variability of springtime trans-Pacific transport of ozone across the entire North Pacific Ocean. During El Ni?no springs, the intensified fires from both the Indochinese Peninsula and Indonesia, together with large-scale circulation anomalies, result in enhanced ozone plumes that stretch over 15 000 km in both the lower-middle and upper troposphere. This enhancement is also observed in the in situ measurements of ozone concentration, with an almost 10% increase at Mauna Loa Observatory,Hawaii, a unique site to monitor the long-distance transport over the North Pacific. This study reports an unexpectedly strong influence of vegetation fires, linked with climate variability, on global tropospheric chemistry and proves once more how complex the interactions in the climate system are. | Lian Xue Aijun Ding Owen Cooper Xin Huang Wuke Wang Derong Zhou Zhaohua Wu Audra Mc Clure-Begley Irina Petropavlovskikh Meinrat O.Andreae Congbin Fu | 2021 | National Science Review2021，8，6： | 1 |
| 20 | Simulation of sea-land breezes and a discussion of their implications on the transport of air pollution during a multi-day ozone episode in the Pearl River Delta of China显示文摘 | DING Aijun WANG Tao ZHAO Ming | 2004 | Atmospheric Environment2004，38，： | 1 |
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