% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Sahu:13171,
author = {Sahu, L.K. and Lal, S. and Thouret, V. and Smit, H.G.},
title = {{C}limatology of tropospheric ozone and water vapour over
{C}hennai: a study based on {MOZAIC} measurements over
{I}ndia},
journal = {International journal of climatology},
volume = {31},
issn = {0899-8418},
address = {Chichester [u.a.]},
publisher = {Wiley},
reportid = {PreJuSER-13171},
pages = {920 - 936},
year = {2011},
note = {Record converted from VDB: 12.11.2012},
abstract = {Climatology of tropospheric ozone (O-3) and water vapour
(H2O) over a metro city of Chennai in southern India has
been presented based on the Measurements of OZone and water
vapour by Airbus I n-service AirCraft (MOZAIC) data during
1996-2001. The seasonal trends in mixing ratio of O-3 are
discussed in view of annual changes in the transport
pattern, rainfall, and its relationship with ambient H2O.
The vertical distributions of both O-3 and H2O show large
seasonal variations. The observed high mixing ratios of O-3
in winter and spring months can be attributed to long-range
transport of pollutants by the northwesterly winds
associated with winter monsoon circulation. The lowest
mixing ratio of 15 ppbv of O-3 from July to September
coincides with the summer monsoon circulation over Indian
subcontinent. The surface level mixing ratio of O-3 was
observed to be below 30 ppbv throughout the year. On the
other hand, monthly rainfall and vertical distributions of
H2O show just opposite seasonal variations to that of O-3
mixing ratio. Chennai is a coastal city; therefore, the
seasonal change in surface wind flow causes large
variability in H2O concentrations of 6-30 g/kg in the lower
troposphere. More or less similar annual patterns of mixing
ratios of O-3 and H2O are repeated during different years of
1996-1998, except for some small-scale differences. High
level of O-3 mixing ratio, particularly during the early
winter months of year 1997, seems unusual as we do not see
such trends for other year of measurements over Chennai. The
case studies of profiles of O-3, relative humidity (RH), and
temperature in view of long-range transport over Chennai
during the different seasons have been also discussed.
Significant enhancements in tropospheric O-3 were observed
over Chennai due to transport of air from forest fire
regions of Indonesia during October 1997. Copyright (c) 2010
Royal Meteorological Society},
keywords = {J (WoSType)},
cin = {IEK-8},
ddc = {550},
cid = {I:(DE-Juel1)IEK-8-20101013},
pnm = {Atmosphäre und Klima},
pid = {G:(DE-Juel1)FUEK491},
shelfmark = {Meteorology $\&$ Atmospheric Sciences},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000289696200010},
doi = {10.1002/joc.2128},
url = {https://juser.fz-juelich.de/record/13171},
}