Imperial College London
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ProfessorApostolosVoulgarakis

Faculty of Natural Sciences, Department of Physics

Professor in Global Climate and Environmental Change
 
 
 
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Contact

 

a.voulgarakis Website

 
 
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Location

 

Huxley 709BHuxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Wu:2017:10.1002/2016JD025319,
author = {Wu, Y and Han, Y and Voulgarakis, A and Wang, T and Li, M and Wang, Y and Xie, M and Zhuang, B and Li, S},
doi = {10.1002/2016JD025319},
journal = {Journal of Geophysical Research: Atmospheres},
pages = {2304--2324},
title = {An agricultural biomass burning episode in eastern China: transport, optical properties, and impacts on regional air quality},
url = {http://dx.doi.org/10.1002/2016JD025319},
volume = {122},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Agricultural biomass burning (ABB) has been of particular concern due to its influence on air quality and atmospheric radiation, as it produces large amounts of gaseous and aerosol emissions. This paper presents an integrated observation of a significant ABB episode in Nanjing, China, during early June 2011, using combined ground-based and satellite sensors (Moderate Resolution Imaging Spectroradiometer, Atmospheric Infrared Sounder, Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO), and Ozone Monitoring Instrument products). The time-height distribution, optical properties, sources and transport of smoke, and its impacts on air quality are investigated. Lidar profiles indicate that the smoke aerosols are confined to the planetary boundary layer (PBL) and have a depolarization ratio of less than 0.08. The aerosol optical depths increase from 0.5 to 3.0 at 500 nm, while the extinction-related Angstrom exponent increases from 1.1 to 1.6 at the wavelength pair of 440–870 nm. The single-scattering albedo becomes lower at 670–1020 nm following the ABB intrusion and particularly shows a decreasing tendency between wavelengths of 440 to 1020 nm. The absorption Angstrom exponent (0.7) is smaller than 1.0, which may indicate the aged smoke particles mixed or coated with the urban aerosols. Surface particular matter PM10 and PM2.5 show a dramatic increase, reaching hourly mean of 800 µg/m3 and 485 µg/m3, respectively, which results in a heavy air pollution event. The stagnant and high-moisture weather provides favorable conditions for the aerosols to accumulate near the surface. Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) also illustrate that the large-scale aerosols are primarily present in the PBL and transported to the ocean, but some dense smoke plumes are misclassified as cloud or polluted dust. By comparing with the observations, we found that the
AU  - Wu,Y
AU  - Han,Y
AU  - Voulgarakis,A
AU  - Wang,T
AU  - Li,M
AU  - Wang,Y
AU  - Xie,M
AU  - Zhuang,B
AU  - Li,S
DO  - 10.1002/2016JD025319
EP  - 2324
PY  - 2017///
SN  - 2169-897X
SP  - 2304
TI  - An agricultural biomass burning episode in eastern China: transport, optical properties, and impacts on regional air quality
T2  - Journal of Geophysical Research: Atmospheres
UR  - http://dx.doi.org/10.1002/2016JD025319
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000396121200016&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/45068
VL  - 122
ER  -
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