Assessing vegetation exposure to ozone: is it possible to estimate AOT40 by passive sampling?
作者： Juha-Pekka Tuovinen
DOI: 10.1016/S0269-7491(01)00335-9
关键词:
摘要: A statistical model for estimating AOT40 from time-integrated concentration data is presented and validated. a numerical index that describes the ozone exposure of ecosystems in terms hourly accumulated over threshold 40 ppb. rather simple formulation was achieved by approximating frequency distribution concentrations Gaussian probability distribution. The represents relationship between time-averaged corresponding AOT40. Time-averaged are obtained when employing passive sampling technique. For testing method, with 14-day time were simulated averaging continuous monitoring data. Data eight background stations Europe used calibration testing. In spite simplifying assumption, performed well tested against independent results show it possible to obtain reasonable estimate even absence data, if can be measured reliably.
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