Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5588
Title: Effects of 1997 Indonesian forest fires on tropospheric ozone enhancement, radiative forcing, and temperature change over the Hong Kong region
Authors: Chan, CY
Chan, LY
Zheng, YG
Harris, JM
Oltmans, SJ
Christopher, S
Keywords: Air temperature
Forest fire
Ozone
Radiative forcing
TOMS
Troposphere
Issue Date: Jul-2001
Publisher: Wiley-Blackwell
Source: Journal of geophysical research. Atmospheres, July 2001, v. 106, no. D14, p. 14875-14885 How to cite?
Journal: Journal of geophysical research. Atmospheres 
Abstract: Tropospheric ozone enhancements were measured over Hong Kong (22.2°N, 114.3°E) by electrochemical concentration cell ozonesondes during the 1997 period when many forest fires were burning in Indonesia. The enhancements have a maximum ozone concentration of up to 130 ppbv and an ozone-enhanced layer depth of 10 km. We used Total Ozone Mapping Spectrometer, advanced very high resolution radiometer satellite image, and back air trajectory to identify the source region and the transport pattern of ozone. The strong tropospheric ozone enhancements covered all of tropical Southeast Asia and subtropical south China. They were due to photochemical ozone buildup from the biomass burning emissions from the Indonesian fires. The ozone-rich air mass was transported to Hong Kong following the east Asia local Hadley circulation and an abnormal anticyclonic flow related to the El Niño phenomenon in the tropical western Pacific. A rough estimation of the radiative forcing due to the ozone enhancement was carried out for two cases in October and December in 1997 using a normalized tropospheric ozone radiative forcing parameter derived from the Unified Chemistry-Climate model [Mickley et al., 1999]. The ozone enhancements induced an additional radiative forcing of 0.26 and 0.48 Wm−2 compared to the normal total forcing of 0.48 and 0.39 Wm−2 in October and December over the Hong Kong region. Estimation of the associated surface temperature change suggests that enhanced ozone from biomass burning on the scale of the 1997 Indonesian fires may have significant impact on regional surface temperature change.
URI: http://hdl.handle.net/10397/5588
ISSN: 2169-897X
EISSN: 2169-8996
DOI: 10.1029/2001JD900092
Rights: Copyright 2001 by the American Geophysical Union
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Chan_1997_Indonesian_Fires.pdf1.49 MBAdobe PDFView/Open
Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

17
Last Week
0
Last month
0
Citations as of Aug 15, 2017

WEB OF SCIENCETM
Citations

16
Last Week
0
Last month
0
Citations as of Aug 12, 2017

Page view(s)

130
Last Week
0
Last month
Checked on Aug 13, 2017

Download(s)

168
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.