World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Heterogeneous Chemistry: a Mechanism Missing in Current Models to Explain Secondary Inorganic Aerosol Formation During the January 2013 Haze Episode in North China : Volume 15, Issue 4 (25/02/2015)

By Zheng, B.

Click here to view

Book Id: WPLBN0003978196
Format Type: PDF Article :
File Size: Pages 19
Reproduction Date: 2015

Title: Heterogeneous Chemistry: a Mechanism Missing in Current Models to Explain Secondary Inorganic Aerosol Formation During the January 2013 Haze Episode in North China : Volume 15, Issue 4 (25/02/2015)  
Author: Zheng, B.
Volume: Vol. 15, Issue 4
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2015
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Kimoto, T., Wang, K., He, K. B., Zhang, Q., Zhang, Y., Duan, F. K.,...Ma, Y. L. (2015). Heterogeneous Chemistry: a Mechanism Missing in Current Models to Explain Secondary Inorganic Aerosol Formation During the January 2013 Haze Episode in North China : Volume 15, Issue 4 (25/02/2015). Retrieved from http://www.ebooklibrary.org/


Description
Description: State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China. Severe regional haze pollution events occurred in eastern and central China in January 2013, which had adverse effects on the environment and public health. Extremely high levels of particulate matter with aerodynamic diameter of 2.5 μm or less (PM2.5) with dominant components of sulfate and nitrate are responsible for the haze pollution. Although heterogeneous chemistry is thought to play an important role in the production of sulfate and nitrate during haze episodes, few studies have comprehensively evaluated the effect of heterogeneous chemistry on haze formation in China by using the 3-D models due to of a lack of treatments for heterogeneous reactions in most climate and chemical transport models. In this work, the WRF-CMAQ model with newly added heterogeneous reactions is applied to East Asia to evaluate the impacts of heterogeneous chemistry and the meteorological anomaly during January 2013 on regional haze formation. As the parameterization of heterogeneous reactions on different types of particles is not well established yet, we arbitrarily selected the uptake coefficients from reactions on dust particles and then conducted several sensitivity runs to find the value that can best match observations. The revised CMAQ with heterogeneous chemistry not only captures the magnitude and temporal variation of sulfate and nitrate, but also reproduces the enhancement of relative contribution of sulfate and nitrate to PM2.5 mass from clean days to polluted haze days. These results indicate the significant role of heterogeneous chemistry in regional haze formation and improve the understanding of the haze formation mechanisms during the January 2013 episode.

Summary
Heterogeneous chemistry: a mechanism missing in current models to explain secondary inorganic aerosol formation during the January 2013 haze episode in North China

Excerpt
American Lung Association: 2005 research highlights: health effects of particulate matter and ozone air pollution, http://www.northeastdiesel.org/pdf/ALA-05-health-studies-biblio.pdf (last access: June 2014), 2006.; Bey, I., Jacob, D. J., Yantosca, R. M., Logan, J. A., Field, B. D., Fiore, A. M., Li, Q., Liu, H. Y., Mickley, L. J., and Schultz, M. G.: Global modeling of tropospheric chemistry with assimilated meteorology: Model description and evaluation, J. Geophys. Res.-Atmos., 106, 23073–23095, doi:10.1029/2001jd000807, 2001.; Chang, J. S., Brost, R. A., Isaksen, I. S. A., Madronich, S., Middleton, P., Stockwell, W. R., and Walcek, C. J.: A three-dimensional Eulerian acid deposition model: Physical concepts and formulation, J. Geophys. Res.-Atmos., 92, 14681–14700, doi:10.1029/JD092iD12p14681, 1987.; Chang, W. L., Bhave, P. V., Brown, S. S., Riemer, N., Stutz, J., and Dabdub, D.: Heterogeneous Atmospheric Chemistry, Ambient Measurements, and Model Calculations of N2O5: A Review, Aerosol. Sci. Tech., 45, 665–695, doi:10.1080/02786826.2010.551672, 2011.; Chou, M.-D., Suarez, M. J., Ho, C.-H., Yan, M. M. H., and Lee, K.-T.: Parameterizations for Cloud Overlapping and Shortwave Single-Scattering Properties for Use in General Circulation and Cloud Ensemble Models, J. Climate, 11, 202–214, doi:10.1175/1520-0442(1998)011<0202:pfcoas>2.0.co;2, 1998.; Crowley, J. N., Ammann, M., Cox, R. A., Hynes, R. G., Jenkin, M. E., Mellouki, A., Rossi, M. J., Troe, J., and Wallington, T. J.: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume V – heterogeneous reactions on solid substrates, Atmos. Chem. Phys., 10, 9059–9223, doi:10.5194/acp-10-9059-2010, 2010.; Dentener, F. J., Carmichael, G. R., Zhang, Y., Lelieveld, J., and Crutzen, P. J.: Role of mineral aerosol as a reactive surface in the global troposphere, J. Geophys. Res.-Atmos., 101, 22869–22889, doi:10.1029/96jd01818, 1996.; Ding, Y. H., and Liu, Y. J.: Analysis of long-term variations of fog and haze in China in recent 50 years and their relations with atmospheric humidity, Sci. China-Earth Sci., 57, 36–46, doi:10.1007/s11430-013-4792-1, 2014.; Fountoukis, C. and Nenes, A.: ISORROPIA II: a computationally efficient thermodynamic equilibrium model for K+ – Ca2+ – Mg2+ - NH4+ – Na+ – SO42- – NO3- – Cl- - H2O aerosols, Atmos. Chem. Phys., 7, 4639–4659, doi:10.5194/acp-7-4639-2007, 2007.; Fu, X., Wang, S. X., Cheng, Z., Xing, J., Zhao, B., Wang, J. D., and Hao, J. M.: Source, transport and impacts of a heavy dust event in the Yangtze River Delta, China, in 2011, Atmos. Chem. Phys., 14, 1239–1254, doi:10.5194/acp-14-1239-2014, 2014.; Gong, S. L.: A parameterization of sea-salt aerosol source function for sub- and super-micron particles, Global Biogeochem. Cy., 17, 1097, doi:10.1029/2003gb002079, 2003.; Guenther, A. B., Jiang, X., Heald, C. L., Sakulyanontvittaya, T., Duhl, T., Emmons, L. K., and Wang, X.: The Model of Emissions of Gases and Aerosols from Nature version 2.1 (MEGAN2.1): an extended and updated framework for modeling biogenic emissions, Geosci. Model Dev., 5, 1471–1492, doi:10.5194/gmd-5-1471-2012, 2012.; He, H., Wang, Y., Ma, Q., Ma, J., Chu, B., Ji, D., Tang, G., Liu, C., Zhang, H., and Hao, J.: Mineral dust and NOx promote the conversion of SO2 to sulfate in heavy pollution days, Sci. Rep., 4, 4172, doi:10.1038/srep04172, 2014.; Henson, B. F., Wilson, K. R., and Robinson, J. M.: A physical adsorption model of the dependence of ClONO2 heterogeneous reactions on relative

 

Click To View

Additional Books


  • Technical Note: Temporal Change in Avera... (by )
  • Atmospheric Nitrogen Deposition to the N... (by )
  • Primary and Secondary Contributions to A... (by )
  • Statistical Analysis of the Precision of... (by )
  • Secondary Organic Aerosol Formation Duri... (by )
  • The Pagami Creek Smoke Plume After Long-... (by )
  • Chemical and Physical Characteristics of... (by )
  • Impact of Different Emission Inventories... (by )
  • On the Role of Monoterpene Chemistry in ... (by )
  • A New Actinic Flux 4P-spectroradiometer:... (by )
  • Size-distributions of N-hydrocarbons, Pa... (by )
  • The Scout-o3 Darwin Aircraft Campaign: R... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.