Arid
DOI10.1007/s10874-008-9094-1
Measurements of surface ozone at semi-arid site Anantapur (14.62 degrees N, 77.65 degrees E, 331 m asl) in India
Reddy, R. R.1; Gopal, K. Rama1; Reddy, L. Siva Sankara1; Narasimhulu, K.1; Kumar, K. Raghavendra1; Ahammed, Y. Nazeer2; Reddy, C. V. Krishna3
通讯作者Reddy, L. Siva Sankara
来源期刊JOURNAL OF ATMOSPHERIC CHEMISTRY
ISSN0167-7764
EISSN1573-0662
出版年2008
卷号59期号:1页码:47-59
英文摘要

In the present study, an attempt has been made to examine the governing photochemical processes of surface ozone (O-3) formation in rural site. For this purpose, measurements of surface ozone and selected meteorological parameters have been made at Anantapur (14.62 degrees N, 77.65 degrees E, 331 m asl), a semi-arid zone in India from January 2002 to December 2003. The annual average diurnal variation of O-3 shows maximum concentration 46 ppbv at noon and minimum 25 ppbv in the morning with 1 sigma standard deviation. The average seasonal variation of ozone mixing ratios are observed to be maximum (about 60 ppbv) during summer and minimum (about 22 ppbv) in the monsoon period. The monthly daytime and nighttime average surface ozone concentration shows a maximum (55 +/- 7 ppbv; 37 +/- 7.3 ppbv) in March and minimum (28 +/- 3.4 ppbv; 22 +/- 2.3 ppbv) in August during the study period. The monthly average high (low) O-3 48.9 +/- 7.7 ppbv (26.2 +/- 3.5 ppbv) observed at noon in March (August) is due to the possible increase in precursor gas concentration by anthropogenic activity and the influence of meteorological parameters. The rate of increase of surface ozone is high (1.52 ppbv/h) in March and lower (0.40 ppbv/h) in July. The average rate of increase of O-3 from midnight to midday is 1 ppbv/h. Surface temperature is highest (43-44 degrees C) during March and April months leading to higher photochemical production. On the other hand, relative humidity, which is higher during the rainy season, shows negative correlation with temperature and ozone mixing ratio. It can be seen that among the two parameters are measured, correlation of surface ozone with wind speed is better (R-2=0.84) in compare with relative humidity (R-2=0.66).


英文关键词semi-arid zone surface ozone anthropogenic emissions meteorological parameters
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000254090200003
WOS关键词SEASONAL-VARIATION ; PART II ; ATHENS ; GREECE ; PRECURSORS ; VARIABILITY ; DYNAMICS ; LAYER
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/158016
作者单位1.Sri Krishnadevaraya Univ, Dept Phys, Aerosol & Atmospher Res Lab, Anantapur 515003, Andhra Pradesh, India;
2.Natl Phys Lab, Radio & Atmoshper Sci Div, New Delhi 110012, India;
3.Sri Krishnadevaraya Univ, Dept Phys, PG Ctr, Kurnool, India
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Reddy, R. R.,Gopal, K. Rama,Reddy, L. Siva Sankara,et al. Measurements of surface ozone at semi-arid site Anantapur (14.62 degrees N, 77.65 degrees E, 331 m asl) in India[J],2008,59(1):47-59.
APA Reddy, R. R..,Gopal, K. Rama.,Reddy, L. Siva Sankara.,Narasimhulu, K..,Kumar, K. Raghavendra.,...&Reddy, C. V. Krishna.(2008).Measurements of surface ozone at semi-arid site Anantapur (14.62 degrees N, 77.65 degrees E, 331 m asl) in India.JOURNAL OF ATMOSPHERIC CHEMISTRY,59(1),47-59.
MLA Reddy, R. R.,et al."Measurements of surface ozone at semi-arid site Anantapur (14.62 degrees N, 77.65 degrees E, 331 m asl) in India".JOURNAL OF ATMOSPHERIC CHEMISTRY 59.1(2008):47-59.
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