当前大气环境污染特点进入了以多污染物共存、多污染源叠加、多尺度关联多过程耦合、多介质影响为特征的复合型大气污染阶段，亟需构建适合国情的大气复合污染防治新理论、新方法和新技术，以基础研究的重大突破引领防治技术研发的方向，以坚实的大气污染综合防治技术支撑大气环境管理决策能力的提升近五年，研究团队围绕污染物来源及成因分析、应对气候变化的协同发展研究、大气污染防治研究成果落地应用等方面开展了研究及应用。
1. 针对 PM2.5 和 O3 的生成、演化和追因的核心科学问题，通过外场观测、实验室分析和数值模拟的方法，利用同位素、空气质量模式等手段，对研究污染物的组成及来源，阐明区域 PM2.5 和 O3 形成的物理化学过程，创新了基于同位素技术的颗粒物源解析和基于大气化学机制的O3 来源解析方法，定量解析污染源排放气象条件和化学转化对大气污染形成的贡献；建立高时空分辨率排放源清单，使用空气质量模式解析重点企业和行业、不同区域的 PM2.5 和 O3 来源，为污染物的精准化治理和环境政策制定提供支撑。
2. 针对受国际公约《京都议定书》、《巴黎协定》及《蒙特利尔议定书<基加利修正案>》管控的温室气体，开展受控卤代烃排放、浓度水平、归趋及环境影响研究，尤其针对能源领域重点开展相关研究。首次构建了基于物质流的受控卤代烃动态网格化排放模型，建立了受控卤代烃 1980 年以来网格化历史清单和到 2060 年的预测清单，评估了受控卤代烃的环境效应并提出减排对策，为中国受控卤代烃管控工作提供借鉴，为履行国际公约、实现温室气体净零排放提供科学支撑。
3. 针对国务院总理任务“大气重污染成因与治理攻关”一市一策，团队负责了长治、阳泉、晋城等城市，利用团队建立的 PM2.5 和 O3 来源解析创新方法，精细化分析 PM2.5 和 O3 来源，提出针对性污染控制减排措施。负责的城市空气质量改善显著并好于其他城市，空气质量在“2+26”城市排名持续位于前三位，环境效益显著。工作得到国务院总理基金项目办（国家大气污染防治攻关联合中心） 的高度评价，多次发表扬信感谢彭林团队“讲奉献，顾大局，工作认真，扎实有效有高度的责任感和使命感为大气攻关工作做出成效”，真正将论文写在了祖国的大地上。
近5 年以通讯作者身份在国内外学术期刊重要杂志如Environmental Science & Technology、Science of The Total Environment 等 SCI 期刊上发表论文 100 余篇，代表性成果如下：
代表性成果：
(1) Jing Wu, Tong Li, Dayu Zhang, Lin Peng*. Establishment of HCFC-22 National-Provincial-Gridded Emission Inventories in China and the Analysis of Emission Reduction Potential, Environmental Science & Technology, 2022, 56,814-822. (IF=11.4)
(2) Xionghui Qiu*, Shuxiao Wang, Qi Ying, Lei Duan, Jia Xing, Jingyuan Cao, Di Wu, Xiaoxiao. Li, Chengzhi Xing, Jiming Hao. Importance of Wintertime Anthropogenic Glyoxal and Methylglyoxal Emissions in Beijing and Implications for Secondary Organic Aerosol Formation in Megacities. Environmental Science & Technology, 2020, 54, 11809-11817. (IF=11.4)
(3) Niu Yueyuan, Yan Yulong*, Chai Jianwei, Zhang Xiangyu, Xu Yang, Duan Xiaolin, Wu Jing, Peng Lin. Effects of Regional Transport from Different Potential Pollution Areas on Volatile Organic Compounds (VOCs) in Northern Beijing During Non-Heating and Heating Periods. Science of the Total Environment, 2022, 836, 155465. (IF=10.7)
(4) Fangyuan Wang, Xionghui Qiu*, Jingyuan Cao, Lin Peng, Nannan Zhang, Yulong Yan, Rumei Li. Policy-driven changes in the health risk of PM2.5 and O3 exposure in China during 2013-2018. Science of The Total Environment, 2021, 757, 143775. (IF=10.7)
(5) Xiaolin Duan, Yulong Yan*, Lin Peng, Kai Xie, Dongmei Hu, Rumei Li, Cheng Wang. Role of Ammonia in Secondary Inorganic Aerosols Formation at an Ammonia-Rich City in Winter in North China: A Comparative Study among Industry, Urban, and Rural Sites. Environmental Pollution, 2021, 291, 118151. (IF=8.9)
(6) Niu Yueyuan, Yan Yulong, Li Jing, Liu Peng, Liu Zhuocheng, Hu Dongmei, Peng Lin, Wu Jing*. Establishment and Verification of Anthropogenic Volatile Organic Compound Emission Inventory in a Typical Coal Resource-Based City. Environmental Pollution, 2021, 288, 117794. (IF=8.9)
(7) Jingyuan Cao, Xionghui Qiu *, Yang Liu, Xiao Yan, Jian Gao, Lin Peng. Identifying the Dominant Driver of Elevated Surface Ozone Concentration in North China Plain During Summertime 2012-2017. Environmental Pollution, 2022, 300, 118912. (IF=8.9)
(8) Jingyuan Cao, Xionghui Qiu*, Lin Peng, Jian Gao, Fangyuan Wang, Xiao Yan. Impacts of the Differences in PM2.5 air Quality Improvement on Regional Transport and Health Risk in Beijing-Tianjin-Hebei Region During 2013-2017. Chemosphere, 2022, 297, 134179. (IF=8.9)
(9) Jing Wu, Fan Wang, Ziwei Wang, Huimin Hu, Lina Yang, Huizhen Fu*. Global Performance and Trends of Research on Per- and Polyfluoroalkyl Substances (PFASs) between 2001 and 2018 Using Bibliometric Analysis, Chemosphere, 2022, 295, 133853. (IF=8.9)
(10) Jingyuan Cao, Xionghui Qiu *, Jian Gao, Fangyuan, Jinbo Wang, Jin Wu, Lin Peng. Significant Decrease in SO2 Emission and Enhanced Atmospheric Oxidation Trigger Changes in Sulfate Formation Pathways in China during 2008-2016. Journal of Cleaner Production, 2021, 326, 129396. (IF=11.1)