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Climate 2018, 6(1), 5; https://doi.org/10.3390/cli6010005

Micro-Scale Variability of Air Temperature within a Local Climate Zone in Berlin, Germany, during Summer

Chair of Climatology, Institute of Ecology, Technische Universität Berlin, Rothenburgstraße 12, D-12165 Berlin, Germany
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Received: 19 December 2017 / Revised: 11 January 2018 / Accepted: 12 January 2018 / Published: 17 January 2018
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Abstract

The urban climate, especially the near-surface air temperature ( T ), is influenced to large amounts by urban surface properties on the local-scale. Landscape classification schemes, like the Local Climate Zone (LCZ) concept, classify neighbourhoods on this scale based on their surface properties, neglecting sub-scale heterogeneity in the urban structure and its potential effects on T . To quantify sub-scale T variability, a measurement campaign with eleven stationary T sensors was conducted within one LCZ (class 2B, compact midrise with scattered trees) in Berlin, Germany, during 22 days in summer 2016. Correlation analyses were performed between observed spatial T differences and micro-scale morphometric parameters around the measurement sites, such as sky view factor and building surface fraction. The results show mean night-time T differences of up to 1 K between the different sites. On a clear, calm and dry day, the daytime difference reached 3 K. At night-time, the variability can be best explained by the building surface fraction within a radius of 50 m. Further, a nocturnal cooling influence of a neighbouring green space could be observed. The observed micro-scale T variability was smaller than T differences to other LCZ classes, highlighting the applicability of the LCZ concept. View Full-Text
Keywords: urban climate; local climate zone (LCZ); microclimate; variability; air temperature; Berlin urban climate; local climate zone (LCZ); microclimate; variability; air temperature; Berlin
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Quanz, J.A.; Ulrich, S.; Fenner, D.; Holtmann, A.; Eimermacher, J. Micro-Scale Variability of Air Temperature within a Local Climate Zone in Berlin, Germany, during Summer. Climate 2018, 6, 5.

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