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dc.contributor.authorWolf, Tobiaseng
dc.contributor.authorEsau, Igoreng
dc.contributor.authorReuder, Joachimeng
dc.description.abstractThe vertical temperature profile in the lowest 1000m of the atmosphere determines a number of important physical processes and meteorological phenomena such as high concentrations of anthropogenic air pollutants in urban areas. Long-term monitoring of temperature profiles at high vertical and temporal resolution has only become feasible only recently with the introduction of affordable angular scanning microwave temperature profile radiometers. In this study, we analyzed 2 years of continuous temperature profile measurements with the MTP-5HE instrument in the urbanized coastal Bergen valley, Norway. The data have a 10min temporal and 50m vertical spatial resolution, thus, constituting a unique data set for a microclimatic characterization of the atmosphere in this high-latitude valley. We studied a 2 year record of ground-based (G-) and elevated (E-) inversions, their dynamics and connection to large-scale circulations, and the links between the urban air quality and the temperature inversions. G-inversions are commonly observed during wintertime nocturnal hours. The local topographic features allow for the frequent occurrence of G-inversions, even during strongwinds of up to 16m/s. E-inversions existmostly during spring and summer and only during unusual synoptic circulation with large-scale warm air advection directly above the valley. Events with high air pollution, identified based on measurements of NO2 and particulate matter concentrations, are highly dependent on the existence of G-inversions. Meteorological models poorly capture both G-inversions and E-inversions reducing their utility for the assessment of urban air quality and local weather forecasts.en_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.ispartof<a href="" target="blank">An Integrated Approach for Local Air Quality Assessment under Present and Future Climate Scenarios</a>en_US
dc.rightsAttribution-NonCommercial-NoDerivs CC BY-NC-NDeng
dc.subjectplanetary boundary layereng
dc.subjecttemperature profileeng
dc.subjectpassive microwave remote sensingeng
dc.subjectatmospheric inversionseng
dc.subjecturban air pollutioneng
dc.titleAnalysis of the vertical temperature structure in the Bergen valley, Norway, and its connection to pollution episodesen_US
dc.typePeer reviewed
dc.typeJournal article
dc.rights.holderCopyright 2014 The Authorsen_US
dc.source.journalJournal of Geophysical Research: Atmospheres

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