JpGU-AGU Joint Meeting 2017

Presentation information

[EE] Oral

A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG46] [EE] Satellite Earth Environment Observation / Satellite Based Remote Sensing of Weather, Climate, and Environment

Sun. May 21, 2017 1:45 PM - 3:15 PM 104 (International Conference Hall 1F)

convener:Riko Oki(Japan Aerospace Exploration Agency), Allen A Huang(University of Wisconsin Madison), Gail Skofronick Jackson(NASA Goddard Space Flight Center), Yoshiaki HONDA(Center for Environmental Remote Sensing, Chiba University), Paul Chang(NOAA College Park), Chairperson:Tsuneo Matsunaga(Center for Global Environmental Research and Satellite Observation Center, National Institute for Environmental Studies)

2:45 PM - 3:00 PM

[ACG46-35] Natural and anthropogenic contributions to long-term variations of SO2, NO2, CO and aerosol over East China

*Hanqing Kang1,2,3,4, Bin Zhu1,2,3,4 (1.Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing, China, 2.Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing, China, 3.Key Laboratory of Meteorological Disaster, Ministry of Education (KLME), Nanjing University of Information Science & Technology, Nanjing, China, 4.Joint International Research Laboratory of Climate and Environment Change (ILCEC), Nanjing University of Information Science & Technology, Nanjing, China)

Keywords:satellite observation, MOZART-4 model, contribution

East China has been experiencing significant air pollution during the past decades. Long-term variations of air pollutants over East China are affected by increasing energy consumption, government pollution regulation, new technologies, economic conditions, human activities and a number of natural factors such as global warming, long-term variations in precipitation, monsoon strength etc. Quantifying the impacts of natural oscillations and anthropogenic activities on the long-term variations of air pollutants is critical for guiding emission control measures. In this study, satellite-retrieved and MOZART-4-simulated SO2, NO2, CO and total column aerosol mass concentration (AMC) data are used to investigate the impacts of natural factors and human activities on long-term variations of these air pollutants over East China. The Kolmogorov–Zurbenko (KZ) filter is used to extract long-term trends from both observed and simulated air pollutant data. Results show that SO2 concentrations decreased from 2007 to 2014, with natural and anthropogenic factors contributing 37.4% and 62.6% to this decrease, respectively. NO2 concentrations increased significantly during 2000–2014; anthropogenic activities contribute 79.5% to this variation, while natural factors only account for 20.5%. CO concentrations decreased slowly from 2003 to 2009, with contributions of natural and anthropogenic factors of 19% and 81%, respectively. Since 2006, AMC decreased slightly, with natural factors accounting for 43% of the total variation, while human activities account for 57%.