Observational Studies and a Statistical Early Warning of Surface Ozone Pollution in Tangshan, the Largest Heavy Industry City of North China

Pei Li, Jinyuan Xin, Xiaoping Bai, Yuesi Wang, Shigong Wang, Shixi Liu and Xiaoxin Feng
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Pei Li: College of Atmospheric Science, Lanzhou University, Lanzhou, Gansu 730000, China
Jinyuan Xin: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
Xiaoping Bai: College of Atmospheric Science, Lanzhou University, Lanzhou, Gansu 730000, China
Yuesi Wang: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
Shigong Wang: College of Atmospheric Science, Lanzhou University, Lanzhou, Gansu 730000, China
Shixi Liu: State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
Xiaoxin Feng: College of Material Science, Hebei United University, Tangshan, Hebei 063009, China

IJERPH, 2013, vol. 10, issue 3, 1-14

Abstract: Continuous measurements of surface ozone (O 3 ) and nitrogen oxides (NO X ) at an urban site (39°37?N, 118°09?E) in Tangshan, the largest heavy industry city of North China during summertime from 2008 to 2011 are presented. The pollution of O 3 was serious in the city. The daily maximum 1 h means (O 3_1-hr max ) reached 157 ± 55, 161 ± 54, 120 ± 50, and 178 ± 75 ?g/m 3 corresponding to an excess over the standard rates of 21%, 27%, 10%, and 40% in 2008–2011, respectively. The total oxidant level (O X = O 3 + NO 2 ) was high, with seasonal average concentrations up to 100 ?g/m 3 in summer. The level of O X at a given location was made up of NO X -independent and NO X -dependent contributions. The independent part can be considered as a regional contribution and was about 100 ?g/m 3 in Tangshan. Statistical early warning analysis revealed that the O 3 levels would exceed the standard rate by 50% on the day following a day when the daily average ozone concentration (O 3_mean ) exceeded 87 ?g/m 3 and the daily maximum temperature (T _max ) exceeded 29 °C. The exceed-standard rate would reach 80% when O 3_mean and T _max exceeded 113 ?g/m 3 and 31 °C. Similarly, the exceed-standard rate would reach 100% when O 3_mean and T _max exceeded 127 ?g/m 3 and 33 °C, respectively.

Keywords: Tangshan; ozone pollution; O 3; nitrogen oxides; early warning; heavy industry city (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2013
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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