Applyingmodelsimulation and photochemicalindicators to evaluateozonesensitivity in southernTaiwan
Resource
JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA, 23(5), 790-797
Journal
JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
Journal Volume
23
Journal Issue
5
Pages
790-797
Date Issued
2011
Date
2011
Author(s)
Peng, Yen-Ping
Chen, Kang-Shin
Wang, Hsin-Kai
Lai, Chia-Hsiang
Lin, Ming-Hsun
Lee, Cheng-Haw
Abstract
Ozone sensitivity was investigated using CAMx simulations and photochemical indicator ratios at three sites (Pingtung City, Chao-Chou Town, and Kenting Town) in Pingtung County in southern Taiwan during 2003 and 2004. The CAMx simulations compared fairly well with the hourly concentrations of ozone. Simulation results also showed that Pingtung City was mainly a volatile organic compounds (VOC)-sensitive regime, while Chao-Chou Town was either a VOC-sensitive or a NOx-sensitive regime, depending on the seasons. Measurements of three photochemical indicators (H2O2, HNO3, and NOy) were conducted, and simulated three transition ranges of H2O2/HNO3 (0.5-0.8), O3/HNO3 (10.3-16.2) and O3/NOy (5.7-10.8) were adopted to assess the ozone sensitive regime at the three sites. The results indicated that the three transition ranges yield consistent results with CAMx simulations at most times at Pingtung City. However, both VOC-sensitive and NOx-sensitive regimes were important at the rural site Chao-Chou Town. Kenting Town, a touring site at the southern end of Taiwan, was predominated by a NOx-sensitive regime in four seasons. © 2011 The Research Centre for Eco-Environmental Sciences, Chinese Academy of Sciences.
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