ACS  Vol.3 No.2 , April 2013
Observed Changes in Long-Term Climatic Conditions and Inner-Regional Differences in Urban Regions of the Baltic Sea Coast

This paper presents research outcomes from an investigation into climate change and urban impacts on climate development in urban regions of the Baltic Sea coast. The cities considered were Rostock and Stockholm, and their surrounding regions. The objectives were: 1) to determine whether significant changes in temperature and precipitation have occurred and, if so, to what extent; and 2) to establish whether there is a noticeable urban heat island effect in Stockholm and the medium-sized city of Rostock. Climatic trends were detected by linear regression and the Mann- Kendall test. Different precipitation trends were detected over the whole period of observation. Average annual temperatures increased significantly in both case studies, particularly from the 1970s with highest trends in winter and lowest in autumn (Rostock) and summer (Stockholm). Although changes in temperature extremes were detected for both regions, no overall long-term trend for precipitation extremes was observed. The average temperature in the city of Rostock (Stockholm) was approximately 0.3°C to 0.6°C (1.2°C) higher than in the surrounding rural areas had seasonal variations, with maxima in the warm season. The main outcomes were that significant changes in climatic conditions, particularly temperature patterns, have been occurring in the case study regions since the 1980s, and that there is a considerable urban heat island effect in both Stockholm and Rostock. This could encourage urban planners to consider specific climatic conditions and small-scale climatic influences also in relatively small coastal urban conglomerates in mid latitudes which can follow from land use changes.

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.
[1]   Intergovernmental Panel on Climate Change, “Climate Change 2007: The Physical Science Basis: Summary for Policy Makers,” Paris, 2007.

[2]   BACC, “Regional Climate Studies. Assessment of Climate Change for the Baltic Sea Basin,” Springer, Berlin, 2008.

[3]   H. W. Linderholm, A. Walther and D. Chen, “TwentiethCentury Trends in the Thermal Growing Season in the Greater Baltic Area,” Climatic Change, Vol. 87, No. 3-4, 2008, pp. 405-419. doi:10.1007/s10584-007-9327-3

[4]   C. Beck, J. Grieser and B. Rudolph, “A New Monthly Precipitation Climatology for the Global Land Areas for the Period 1951 to 2000,” Climate Status Report, 2004.

[5]   A. Kratzer and Das Stadtklima, “Vieweg,” Braunschweig, 1937.

[6]   T. R. Oke and F. Hanell, “The Form of the Urban Heat Island in Hamilton, Canada,” WMO Technical Note, No. 254, Geneva, 1970.

[7]   A. J. Arnfield, “Two Decades of Urban Climate Research: A Review of Turbulence, Exchanges of Energy and Water, and the Urban Heat Island,” International Journal of Climatology, Vol. 23, No. 1, 2003, pp. 1-26. doi:10.1002/joc.859

[8]   T. R. Oke, “City Size and the Urban Heat Island,” Atmospheric Environment, Vol. 7, No. 8, 1973, pp. 769-779. doi:10.1016/0004-6981(73)90140-6

[9]   I. Camilloni and V. Barros, “On the Urban Heat Island Effect Dependence on Temperature Trends,” Climatic Change, Vol. 37, No. 4, 1997, pp. 665-681. doi:10.1023/A:1005341523032

[10]   C. J. G. Morris, I. Simmonds and N. Plummer, “Quantification of the Influences of Wind and Cloud on the Nocturnal Urban Heat Island of a Large City,” Journal of Applied Meteorology, Vol. 40, No. 2, 2001, pp. 169-182. doi:10.1175/1520-0450(2001)040<0169:QOTIOW>2.0.CO;2

[11]   Y. H. Kim and J. J. Baik, “Daily Maximum Urban Heat Island Intensity in Large Cities of Korea,” Theoretical and Applied Climatology, Vol. 79, No. 3-4, 2004, pp. 151-164. doi:10.1007/s00704-004-0070-7

[12]   K. H. Schlünzen, P. Hoffmann, G. Rosenhagen and W. Riecke, “Long-Term Changes and Regional Differences in Temperature and Precipitation in the Metropolitan Area of Hamburg,” International Journal of Climatology, Vol. 30, No. 8, 2010, pp. 1121-1136. doi:10.1002/joc.1968

[13]   B. Crossette, “State of the World Population 2010,” United Nations Population Fund, New York, 2010.

[14]   B. Früh, P. Becker, T. Deutschl?nder, J. D. Hessel, M. Kossmann, I. Mieskes, J. Namyslo, M. Roos, U. Sievers, T. Steigerwald, H. Turau and U. Wienert, “Estimation of Climate-Change Impacts on the Urban Heat Load Using an Urban Climate Model and Regional Climate Projections,” Journal of Applied Meteorology and Climatology, Vol. 50, No. 1, 2011, pp. 167-184. doi:10.1175/2010JAMC2377.1

[15]   C. Souch and C. Grimmond, “Applied Climatology: ‘Heat waves’,” Progress in Physical Geography, Vol. 28, No. 4, 2004, pp. 599-606. doi:10.1191/0309133304pp428pr

[16]   Intergovernmental Panel on Climate Change, “Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the IPCC,” Paris, 2007.

[17]   L. Filleul, S. Cassadou, S. Médina, P. Fabres, A. Lefranc, D. Eilstein, A. le Tertre, L. Pascal, B. Chardon, M. Blanchard, C. Declercq, J. F. Jusot, H. Prouvost and M. Ledrans, “The Relation between Temperature, Ozone, and Mortality in Nine French Cities during the Heat Wave of 2003,” Environmental Health Perspectives, Vol. 114, No. 9, 2006, pp. 1344-1347. doi:10.1289/ehp.8328

[18]   M. Rückversicherungsgesellschaft, “Topics: Jahresrückblick Naturkatastrophen,” Munich, 2003.

[19]   J. A. Patz, D. Campbell-Lendrum, T. Holloway and J. A. Foley, “Impact of Regional Climate Change on Human Health,” Nature, Vol. 438, No. 7066, 2005, pp. 310-317. doi:10.1038/nature04188

[20]   S. Thorsson, F. Lindberg, J. Bj?rklund, B. Holmer and D. Rayner, “Potential Changes in Outdoor Thermal Comfort Conditions in Gothenburg, Sweden Due to Climate Change: The Influence of Urban Geometry,” International Journal of Climatology, Vol. 31, No. 2, 2011, pp. 324-335. doi:10.1002/joc.2231

[21]   A. Moberg, H. Alexandersson, H. Bergstr?m and P. D. Jones, “Were Southern Swedish Temperatures before 1860 as Warm as Measured?” International Journal of Climatology, Vol. 23, No. 12, 2003, pp. 1495-1521. doi:10.1002/joc.945

[22]   A. Moberg, H. Bergstr?m, J. Ruiz Krigsmand and O. Svanered, “Daily Air Temperature and Pressure Series for Stockholm (1756-1998),” Climatic Change, Vol. 53, No. 1-3, 2002, pp. 171-212. doi:10.1023/A:1014966724670

[23]   A. Moberg and H. Bergstrom, “Homogenization of Swedish Temperature Data. Part III: The Long Temperature Records from Uppsala and Stockholm,” International Journal of Climatology, Vol. 17, No. 1, 1997, pp. 667-699. doi:10.1002/(SICI)1097-0088(19970615)17:7<667::AID-JOC115>3.0.CO;2-J

[24]   R. Sneyers, “On the Statistical Analysis of Series of Observations,” WMO Technical Note, No. 415, Geneva, 1990.

[25]   A. Kulkarni and H. von Storch, “Monte Carlo Experiments on the Effect of Serial Correlation on the MannKendall Test of Trends,” Meteorologische Zeitschrift N.F., Vol. 4, No. 2, 1995, pp. 82-85.

[26]   P. Stěpánek, “AnClim—Software for Time Series Analysis,” 2008.

[27]   X. Zhang and F. Yang, “RClimDex (1.0) User Manual,” Downsview, 2004.

[28]   R. Watkins, J. Palmer, M. Kolokotroni and P. Littlefair, “The Balance of the Annual Heating and Cooling Demand within the London Urban Heat Island,” Building Services Engineering Research and Technology, Vol. 23, No. 4, 2002, pp. 207-213. doi:10.1191/0143624402bt043oa

[29]   J. P. Montávez, A. Rodríguez and J. I. Jiménez, “A Study of the Urban Heat Island of Granada,” International Journal of Climatology, Vol. 20, No. 8, 2000, pp. 899-911. doi:10.1002/1097-0088(20000630)20:8<899::AID-JOC433>3.0.CO;2-I

[30]   Intergovernmental Panel on Climate Change, “Climate change 2007: Synthesis Report,” Paris, 2007.

[31]   E. Ripley, O. Archibold and D. Bretell, “Temporal and Spatial Temperature Patterns in Saskatoon,” Weather, Vol. 51, No. 12, 1996, pp. 398-403. doi:10.1002/j.1477-8696.1996.tb06171.x

[32]   U. Wienert, “Untersuchungen zur Breiten—Und Klimazonenabhangigkeit der Urbanen Warmeinsel—Eine Statistische Analyse,” Essener Okologische Schriften, No. 16, 2002.

[33]   K. Fortuniak, K. Klysik and J. Wibig, “Urban-Rural Contrasts of Meteorological Parameters in Lodz,” Theoretical and Applied Climatology, Vol. 84, No. 1-3, 2006, pp. 91-101. doi:10.1007/s00704-005-0147-y

[34]   U. Wienert and W. Kuttler, “The Dependence of the Urban Heat Island Intensity on Latitude—A Statistical Approach,” Metereologische Zeitschrift, Vol. 14, No. 5, 2005, pp. 677-686. doi:10.1127/0941- 2948/2005/0069

[35]   P. Hoffmann, O. Krueger and K. H. Schlünzen, “A Statistical Model for the Urban Heat Island and Its Application to a Climate Change Scenario,” International Journal of Climatology, Vol. 32, No. 8, 2012, pp. 1238-1248. doi:10.1002/joc.2348

[36]   D. J. Jacob and D. A. Winner, “Effect of Climate Change on Air Quality,” Atmospheric Environment, Vol. 43, No. 1, 2009, pp. 51-63. doi:10.1016/j.atmosenv.2008.09.051