Assessing Long-Term Trend of Particulate Matter Pollution in the Pearl River Delta Region Using Satellite Remote Sensing.

Serious particulate matter (PM) pollution problems in many polluted regions of China have been frequently reported in recent years. Long-term exposure to ambient PM pollution is significantly associated with adverse health effects. Characterizing the long-term trends and variation in PM pollution is a basic requirement for evaluating long-term exposure and for guiding future policies to reduce the effects of air pollution on health. However, long-term, ground-based PM measurements are only available at a few fixed stations. In this study, an algorithm is developed and validated to estimate PM concentrations based on the satellite atmospheric optical depth with 1 km spatial resolution. The long-term trends of PM10 concentrations in the entire Pearl River Delta (PRD) region and different cities are quantified and discussed. From 2001 to 2013, the PM10 pollution of the entire PRD region was dominated by a decreasing trend of -0.15 ± 0.23 μg/m(3)·yr. This decreasing PM10 trend was apparent over 75% of the PRD area, with the most significant decreases observed in the center of the region. However, the remaining 25%, mostly located in the outskirts of the region, showed an increasing PM10 trend. This overall decreasing trend indicates the effectiveness of the control measures applied in the past decade for the primary pollutants.

[1]  P. Solomon,et al.  Airborne Particulate Matter and Human Health: A Review , 2005 .

[2]  R. Koelemeijer,et al.  Comparison of spatial and temporal variations of aerosol optical thickness and particulate matter over Europe , 2006 .

[3]  Y. H. Zhang,et al.  Aerosol optical properties and related chemical apportionment at Xinken in Pearl River Delta of China , 2008 .

[4]  K. He,et al.  Historical evaluation of vehicle emission control in Guangzhou based on a multi-year emission inventory , 2013 .

[5]  Duo-hong Chen,et al.  Long-term trends of fine particulate matter and chemical composition in the Pearl River Delta Economic Zone (PRDEZ), China , 2016, Frontiers of Environmental Science & Engineering.

[6]  M. Brauer,et al.  Global Estimates of Ambient Fine Particulate Matter Concentrations from Satellite-Based Aerosol Optical Depth: Development and Application , 2010, Environmental health perspectives.

[7]  R. Martin,et al.  Estimating ground-level PM 2.5 using aerosol optical depth determined from satellite remot , 2006 .

[8]  J. Fung,et al.  Using satellite remote sensing data to estimate the high-resolution distribution of ground-level PM2.5 , 2015 .

[9]  Can Li,et al.  A study on the potential applications of satellite data in air quality monitoring and forecasting , 2011 .

[10]  R. Martin,et al.  Toward the next generation of air quality monitoring: Particulate Matter , 2013 .

[11]  R. D. Morris,et al.  Air pollution and hospital admissions for cardiovascular disease in Detroit, Michigan. , 1995, American journal of epidemiology.

[12]  Nobuo Sugimoto,et al.  Influences of relative humidity and particle chemical composition on aerosol scattering properties during the 2006 PRD campaign , 2008 .

[13]  Alexis K.H. Lau,et al.  Validation of MODIS AOD products with 1-km resolution and their application in the study of urban air pollution in Hong Kong , 2004, SPIE Optics + Photonics.

[14]  D. Allen Chu,et al.  Retrieval, validation, and application of the 1-km aerosol optical depth from MODIS measurements over Hong Kong , 2005, IEEE Transactions on Geoscience and Remote Sensing.

[15]  Li Hua-you.  Prospect and Development Study of Environmental Protection Industry during "the Twelfth Five-Year Plan" in China , 2011 .

[16]  Ying Zhang,et al.  Satellite-based estimation of regional particulate matter (PM) in Beijing using vertical-and-RH correcting method , 2010 .

[17]  Peter V. Hobbs,et al.  Humidification factors for atmospheric aerosols off the mid‐Atlantic coast of the United States , 1999 .

[18]  Alexis K.H. Lau,et al.  Application of MODIS satellite products to the air pollution research in Beijing , 2005 .

[19]  Junyu Zheng,et al.  Emission trends and source characteristics of SO2, NOx, PM10 and VOCs in the Pearl River Delta region from 2000 to 2009 , 2013 .

[20]  O. Boucher,et al.  A satellite view of aerosols in the climate system , 2002, Nature.

[21]  Altaf Arain,et al.  A review and evaluation of intraurban air pollution exposure models , 2005, Journal of Exposure Analysis and Environmental Epidemiology.

[22]  Marc Zebisch,et al.  PM10 remote sensing from geostationary SEVIRI and polar-orbiting MODIS sensors over the complex terrain of the European Alpine region , 2010 .

[23]  Jen-Ping Chen,et al.  Analysis of the relationship between MODIS aerosol optical depth and particulate matter from 2006 to 2008 , 2011 .

[24]  Z. Yuan,et al.  Science–policy interplay: Air quality management in the Pearl River Delta region and Hong Kong , 2013 .

[25]  Jinyuan Xin,et al.  Observation of aerosol optical properties and particulate pollution at background station in the Pearl River Delta region , 2014 .

[26]  Michael H. Bergin,et al.  Measurement of aerosol chemical, physical and radiative properties in the Yangtze delta region of China , 2002 .

[27]  Xiaolin Wei,et al.  Atmospheric concentrations of particulate sulfate and nitrate in Hong Kong during 1995–2008: Impact of local emission and super-regional transport , 2013 .

[28]  D. Jacob,et al.  Estimating ground-level PM2.5 in the eastern United States using satellite remote sensing. , 2005, Environmental science & technology.

[29]  E. Vermote,et al.  Operational remote sensing of tropospheric aerosol over land from EOS moderate resolution imaging spectroradiometer , 1997 .

[30]  Tao Wang,et al.  Ground-level ozone in the Pearl River Delta region: Analysis of data from a recently established regional air quality monitoring network , 2010 .

[31]  Ingo Liefner,et al.  Crisis and Recovery in the Pearl River Delta. Growth and Employment in the Electronics Industry , 2011 .

[32]  Young-Joon Kim,et al.  An overview of ACE‐Asia: Strategies for quantifying the relationships between Asian aerosols and their climatic impacts , 2003 .

[33]  Alexis K.H. Lau,et al.  Long-term trends of ambient particulate matter emission source contributions and the accountability of control strategies in Hong Kong over 1998–2008 , 2013 .

[34]  Jiahua Zhang,et al.  Synergy of satellite and ground based observations in estimation of particulate matter in eastern China. , 2012, The Science of the total environment.

[35]  Y. Zhanga,et al.  Aerosol optical properties and related chemical apportionment at Xinken in Pearl River Delta of China , 2008 .

[36]  Yang Liu,et al.  An empirical method of RH correction for satellite estimation of ground-level PM concentrations , 2014 .