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This paper presents research outcomes from an investigation intoclimate change and urban impacts on climate development in urban regions of theBaltic Sea coast. The cities considered were Rostock and Stockholm,and their surrounding regions. The objectives were: 1 todetermine whether significant changes in temperature and precipitation haveoccurred and, if so, to what extent; and 2 to establish whether there is a noticeableurban heat island effect in Stockholm and the medium-sized city of Rostock.Climatic trends were detected by linear regression and the Mann- Kendalltest. Different precipitation trends were detected over the whole period ofobservation. Average annual temperatures increased significantly in both casestudies, particularly from the 1970s with highest trends in winter and lowestin autumn Rostock and summer Stockholm. Although changes in temperatureextremes were detected for both regions, no overall long-term trend forprecipitation extremes was observed. The average temperature in the city of Rostock Stockholmwas approximately 0.3°C to 0.6°C 1.2°C higher than in the surrounding ruralareas had seasonal variations, with maxima in the warm season. The mainoutcomes were that significant changes in climatic conditions, particularlytemperature patterns, have been occurring in the case study regions since the1980s, and that there is a considerable urban heat island effect in both Stockholm and Rostock.This could encourage urban planners to consider specific climatic conditionsand small-scale climatic influences also in relatively small coastal urbanconglomerates in mid latitudes which can follow from land use changes.

KEYWORDS

Urban Heat Island; Climate Change; Urban Climate; Baltic Sea; Extreme Events

Cite this paper

M. Richter, S. Deppisch and H. Storch -Observed Changes in Long-Term Climatic Conditions and Inner-Regional Differences in Urban Regions of the Baltic Sea Coast,- Atmospheric and Climate Sciences, Vol. 3 No. 2, 2013, pp. 165-176. doi: 10.4236-acs.2013.32018.





Autor: Michael Richter, Sonja Deppisch, Hans Von Storch

Fuente: http://www.scirp.org/



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