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List of Abstracts 156laboratory measurements of the OH reaction rate constant over the temperature range of atmosphericinterest. We will provide results of such higher-accuracy measurements obtained for various groups ofhalogenated compounds. Accurate IR absorption measurements of potential greenhouse gases will bediscussed.P-Transformation.63 ID:4335 10:30Some Limitations of MM5 Mesoscale Meteorological Model for Air Quality ApplicationsJunfeng MiaoNanjing University of Information Science and TechnologyContact: miaoj@nuist.edu.cnThe performance of MM5 mesoscale model using different planetary boundary layer (PBL) and land surfacemodel (LSM) parameterizations is evaluated and compared using high temporal and spatial resolutionGOTE2001 campaign data at local scale over the Greater G€oteborg area along the Swedish west coastduring 7–20 May 2001. The focus is on impact of PBL and LSM parameterizations on simulatedmeteorological variables important for air quality applications such as global radiation, diurnal cycle of nearsurfaceair temperature and wind, diurnal cycle intensity, near-surface vertical temperature gradient,nocturnal temperature inversion,boundary layer height, and low-level jet. The model performance fordaytime and nighttime and under different weather conditions is also discussed. The purpose is to examinethe performance of the model using different PBL and LSM parameterizations at local scale in this area forits potential applications in air quality modeling.The results indicate that the influence of PBL and LSM parameterizations on simulated global radiation,diurnal cycle of near-surface air temperature and wind speed, diurnal cycle intensity, vertical temperaturegradient, nocturnal temperature inversion and PBL heights, which are critical parameters for air qualityapplications, is evident. Moreover, the intensity and location of LLJ are simulated well by all schemes, butthere also exist some differences between simulated results by using different PBL and LSM schemes.Therefore, the choice of PBL and LSM parameterizations is important for MM5 applications to air qualitystudies.Also, the sensitivity of sea breeze simulations to combinations of PBL and LSM parameterizations in themodel for an observed SB case over this area is investigated. The results show that the differentcombinations of PBL and LSM parameterization schemes result in different SB timing and verticalcirculation characteristics. The results have significant implications for convective initiation, air qualitystudies and other environmental problems in coastal areas.P-Transformation.64 ID:4352 10:30Integrating model chemical mechanisms with databases of reaction kineticsGlenn Carver 1 , Hannah Barjat 1 , Tony Cox 1 , Andrew Rickard 2 , Jenny Young 21 Centre for Atmospheric Science, University of Cambridge, UK2 School of Chemistry, University of Leeds, UKContact: Glenn.Carver@atm.ch.cam.ac.ukThe role of chemistry in atmospheric modeling is central to research into climate change and air quality. Thedescription of chemistry in these models, known as the 'chemical mechanism', is becoming increasinglycomplex. The validity of such chemical mechanisms relies largely on fundamental laboratory measurementsiCACGP-IGAC 2010 14 July, 2010