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Title: Spatial and temporal variations of aerosols around Beijing in summer 2006: 2. Local and column aerosol optical properties

Abstract

Weather Research and Forecasting (WRF)-chem model calculations were conducted to study aerosol optical properties around Beijing, China, during the Campaign of Air Quality Research in Beijing and Surrounding Region 2006 (CAREBeijing-2006) period. In this paper, we interpret aerosol optical properties in terms of aerosol mass concentrations and their chemical compositions by linking model calculations with measurements. In general, model calculations reproduced observed features of spatial and temporal variations of various surface and column aerosol optical parameters in and around Beijing. Spatial and temporal variations of aerosol absorption, scattering, and extinction coefficient corresponded well to those of elemental carbon (primary aerosol), sulfate (secondary aerosol), and the total aerosol mass concentration, respectively. These results show that spatial and temporal variations of the absorption coefficient are controlled by local emissions (within 100 km around Beijing during the preceding 24 h), while those of the scattering coefficient are controlled by regional-scale emissions (within 500 km around Beijing during the preceding 3 days) under synoptic-scale meteorological conditions, as discussed in our previous study of aerosol mass concentration. Vertical profiles of aerosol extinction revealed that the contribution of secondary aerosols and their water uptake increased with altitude within the planetary boundary layer, leading to a considerablemore » increase in column aerosol optical depth (AOD) around Beijing. These effects are the main factors causing differences in regional and temporal variations between particulate matter (PM) mass concentration at the surface and column AOD over a wide region in the northern part of the Great North China Plain.« less

Authors:
; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
993659
Report Number(s):
PNNL-SA-70475
KP1701000; TRN: US201023%%546
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of Geophysical Research. D. (Atmospheres), 115:Paper No. D22207
Additional Journal Information:
Journal Volume: 115
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; ABSORPTION; AEROSOLS; AIR QUALITY; ALTITUDE; BOUNDARY LAYERS; CARBON; CHEMICAL COMPOSITION; CHINA; FORECASTING; OPTICAL PROPERTIES; PARTICULATES; SCATTERING; SULFATES; WATER; WEATHER

Citation Formats

Matsui, Hitoshi, Koike, Makoto, Kondo, Yutaka, Takegawa, Nobuyuki, Fast, Jerome D, Poschl, U, Garland, R M, Andreae, M O, Wiedensohler, A, Sugimoto, N, and Zhu, T. Spatial and temporal variations of aerosols around Beijing in summer 2006: 2. Local and column aerosol optical properties. United States: N. p., 2010. Web. doi:10.1029/2010JD013895.
Matsui, Hitoshi, Koike, Makoto, Kondo, Yutaka, Takegawa, Nobuyuki, Fast, Jerome D, Poschl, U, Garland, R M, Andreae, M O, Wiedensohler, A, Sugimoto, N, & Zhu, T. Spatial and temporal variations of aerosols around Beijing in summer 2006: 2. Local and column aerosol optical properties. United States. https://doi.org/10.1029/2010JD013895
Matsui, Hitoshi, Koike, Makoto, Kondo, Yutaka, Takegawa, Nobuyuki, Fast, Jerome D, Poschl, U, Garland, R M, Andreae, M O, Wiedensohler, A, Sugimoto, N, and Zhu, T. 2010. "Spatial and temporal variations of aerosols around Beijing in summer 2006: 2. Local and column aerosol optical properties". United States. https://doi.org/10.1029/2010JD013895.
@article{osti_993659,
title = {Spatial and temporal variations of aerosols around Beijing in summer 2006: 2. Local and column aerosol optical properties},
author = {Matsui, Hitoshi and Koike, Makoto and Kondo, Yutaka and Takegawa, Nobuyuki and Fast, Jerome D and Poschl, U and Garland, R M and Andreae, M O and Wiedensohler, A and Sugimoto, N and Zhu, T},
abstractNote = {Weather Research and Forecasting (WRF)-chem model calculations were conducted to study aerosol optical properties around Beijing, China, during the Campaign of Air Quality Research in Beijing and Surrounding Region 2006 (CAREBeijing-2006) period. In this paper, we interpret aerosol optical properties in terms of aerosol mass concentrations and their chemical compositions by linking model calculations with measurements. In general, model calculations reproduced observed features of spatial and temporal variations of various surface and column aerosol optical parameters in and around Beijing. Spatial and temporal variations of aerosol absorption, scattering, and extinction coefficient corresponded well to those of elemental carbon (primary aerosol), sulfate (secondary aerosol), and the total aerosol mass concentration, respectively. These results show that spatial and temporal variations of the absorption coefficient are controlled by local emissions (within 100 km around Beijing during the preceding 24 h), while those of the scattering coefficient are controlled by regional-scale emissions (within 500 km around Beijing during the preceding 3 days) under synoptic-scale meteorological conditions, as discussed in our previous study of aerosol mass concentration. Vertical profiles of aerosol extinction revealed that the contribution of secondary aerosols and their water uptake increased with altitude within the planetary boundary layer, leading to a considerable increase in column aerosol optical depth (AOD) around Beijing. These effects are the main factors causing differences in regional and temporal variations between particulate matter (PM) mass concentration at the surface and column AOD over a wide region in the northern part of the Great North China Plain.},
doi = {10.1029/2010JD013895},
url = {https://www.osti.gov/biblio/993659}, journal = {Journal of Geophysical Research. D. (Atmospheres), 115:Paper No. D22207},
number = ,
volume = 115,
place = {United States},
year = {Tue Nov 23 00:00:00 EST 2010},
month = {Tue Nov 23 00:00:00 EST 2010}
}