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- W1514097909 abstract "The regional climate of the Greater Baltic Area is complex and varies at a multitude of scales in space and time. This thesis contributes to increased understanding of climate change and climate variability in this area focusing on four significant research topics. Droughts have a considerable ecological and socio-economic impact. The occurrence of rainfall is strongly controlled by large-scale atmospheric circulation. The observed summer North Atlantic Oscillation (SNAO) was correlated to a gridded dataset of the self-calibrating Palmer Drought Severity Index. A more positive circulation index is strongly linked to dry conditions over large parts of Southern Fennoscandia and northern Central Europe. Less distinct but still significant is the coupling to wetter conditions in the eastern Mediterranean. Using tree-ring based SNAO and precipitation reconstructions over 550 a, the relationship was investigated back in time in a multicentury perspective. Prior to the instrumental period the coupling is generally less pronounced but holds for distinct periods of drought. A database of up to 121 daily more than century-long instrumental records of precipitation and temperature over Europe was analyzed for trends in climate extremes. Over the 20th century a clear increase of warm extremes and a decreasing trend in cold extremes could be detected. Precipitation extremes became slightly more frequent and precipitation amounts increased, especially during winter. The ongoing warming resulted in a significantly extended thermal growing season in the Greater Baltic Area has extended significantly during the last century. An analysis of 48 long-term daily mean temperature records over this area revealed an overall lengthening of about one week between 1951-2000 mostly contributed by an earlier start in spring. The strongest change was observed at stations adjacent to the Baltic Sea in the South and the weakest in the North East. The 100-year records at Danish stations reveal a maximum shift in start (-22.8 d), end (12.6 d) and growing season length (33.5 d). The sub-daily precipitation characteristics in the region are not very well understood yet. By studying hourly observations for 1996-2008 from 93 stations all over Sweden, a distinct summer season diurnal cycle with an afternoon peak mainly contributed by convective activities during summer was identified for inland stations. Along the East coast the influence of the Baltic Sea is evident showing a weaker cycle peaking in the early morning. The observed diurnal cycle was compared to simulations from the Rossby Centre regional climate model (RCA3) run at 50, 25, 12 and 6 km grid resolution. In general the model tends to simulate too frequent convective precipitation events of light intensity. The simulated peak timing is about 2-4 hours too early and the amplitude too high. The model performance varies depending on the spatial resolution. The 6-km simulation most realistically captures the peak timing and the diversity in the spatial pattern. With increasing model resolution the fraction of large-scale (convective) precipitation is increasing (decreasing). The results indicate the need for improvement of the convection parameterization scheme. Keywords: observations, precipitation and temperature extremes, thermal growing season, drought, hourly precipitation, diurnal precipitation cycle, regional climate model, summer NAO, Greater Baltic Area 4 Alexander Walther Fur Emilia und Annalena Simulated and observed change of precipitation and temperature in Europe with focus on the Greater Baltic Area 5 List of publications This thesis consists of a summary (part I) and of five papers (part II) referred to with roman letters within the thesis. I. Moberg, A., P.D. Jones, D. Lister, A. Walther, M. Brunet, J. Jacobeit, and coauthors, 2006: Indices for daily temperature and precipitation extremes in Europe analysed for the period 1901-2000, Journal of Geophysical Research,111, D22106. A. Walther calculated climate extremes indices and contributed to build up and quality control the underlying database and did the analysis and parts of the writing for the subsequent report. II. Linderholm, H.W., Walther, A. and Chen, D. 2008: Twentieth-century trends in the thermal growing season in the Greater Baltic Area. Climatic Change, 87: 405-419. A. Walther contributed to writing the paper, analyzed the data and visualized the results. III. Linderholm, H.W., Folland, C.K. and Walther, A., 2009: A multicentury perspective on the summer North Atlantic Oscillation (SNAO) and drought in the eastern Atlantic Region. J. Quaternary Sci., Vol. 24 pp. 415-425. A. Walther contributed with analysis and visualization of the spatial relationships between scPDSI and SNAO and discussing the results. IV. Jeong J.-H., Walther A., Nikulin G., Jones C., Chen D. 2011. Diurnal cycle of precipitation amount and frequency in Sweden: observation versus model simulation. Tellus Series A: Dynamic Meteorology and Oceanography. 63(4): 664-674. A. Walther collected the data, conducted the analysis, visualized the results and contributed with writing. V. Walther, A., Jeong, J.-H., Nikulin, G., Chen, D., Jones, C. Evaluation of the warm season diurnal cycle of precipitation over Sweden simulated by the Rossby Centre regional climate model RCA3. Atmospheric Research, (in press). doi: 10.1016/j.atmosres.2011.10.012 A. Walther initiated the paper, did the analysis, visualization of the results and most of the writing. 6 Alexander Walther Publications not included in the thesis (reverse chronological order) Burauskaite-Harju, A., A. Grimvall, C. Achberger, A. Walther and D. Chen (2012). Characterising and visualizing spatio-temporal patterns in hourly precipitation records. Theoretical and Applied Climatology: 1-11. Walther, A., J.-H. Jeong, G. Nikulin, D. Chen and C. Jones (2011). Potential future changes of the diurnal precipitation properties over Sweden. Geophys. Res. Abs. 13(EGU2011-10793). Westerberg, I., Walther, A., Guerrero, J.-L., Coello, Z., Halldin, S., Xu, C.-Y., Chen, D., Lundin, L.-C., 2010: Precipitation data in a mountainous catchment in Honduras: quality assessment and spatiotemporal characteristics. Theoretical and Applied Climatology, 101 (3-4), 381-396. Song, Y., H. W. Linderholm, D. Chen and A. Walther (2010). Trends of the thermal growing season in China, 1951-2007. International Journal of Climatology 30(1): 33-43. Brunet, M., P. D. Jones, J. Sigro, O. Saladie, E. Aguilar, A. Moberg, P. M. DellaMarta, D. Lister, A. Walther and D. Lopez (2007). Temporal and spatial temperature variability and change over Spain during 1850-2005. Journal of Geophysical Research-Atmospheres 112(D12). M. Brunet, J. Sigro, P. D. Jones, O. Saladie, E. Aguilar, A. Moberg, D. Lister and A. Walther (2007): Long-term changes in extreme temperatures and precipitation in Spain. Contributions to Science 3(3): 333-344 (2007). Brunet, M., O. Saladie, P. Jones, J. Sigro, E. Aguilar, A. Moberg, D. Lister, A. Walther, D. Lopez and C. Almarza (2006). The development of a new dataset of Spanish Daily Adjusted Temperature Series (SDATS) (1850-2003). International Journal of Climatology 26(13): 1777-1802. Walther, A. and H. W. Linderholm (2006). A comparison of growing season indices for the Greater Baltic Area. International Journal of Biometeorology 51(2): 107-118. Chen, D., A. Walther, A. Moberg, P. D. Jones, J. Jacobeit and D. Lister (2006). Trend Atlas of the EMULATE indices, Dept of Earth Sciences, University of Gothenburg, Sweden. C73: 798. Linderholm, H. W., A. Walther and D. Chen (2005). Growing season trends in the Greater Baltic Area, Dept of Earth Sciences, University of Gothenburg, Sweden. C69: 92. 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- W1514097909 cites W1563711212 @default.
- W1514097909 cites W1868660362 @default.
- W1514097909 cites W1963819694 @default.
- W1514097909 cites W1964527501 @default.
- W1514097909 cites W1965253010 @default.
- W1514097909 cites W1970621384 @default.
- W1514097909 cites W1978380064 @default.
- W1514097909 cites W1981538867 @default.
- W1514097909 cites W1983483369 @default.
- W1514097909 cites W1986395410 @default.
- W1514097909 cites W1987896016 @default.
- W1514097909 cites W1998223781 @default.
- W1514097909 cites W2000862224 @default.
- W1514097909 cites W2004979621 @default.
- W1514097909 cites W2007276043 @default.
- W1514097909 cites W2008190781 @default.
- W1514097909 cites W2016368842 @default.
- W1514097909 cites W2017506488 @default.
- W1514097909 cites W2028395539 @default.
- W1514097909 cites W2030444493 @default.
- W1514097909 cites W2030565031 @default.
- W1514097909 cites W2031595809 @default.
- W1514097909 cites W2070337735 @default.
- W1514097909 cites W2079188864 @default.
- W1514097909 cites W2080784355 @default.
- W1514097909 cites W2082919287 @default.
- W1514097909 cites W2090249381 @default.
- W1514097909 cites W2091046283 @default.
- W1514097909 cites W2095833674 @default.
- W1514097909 cites W2109048734 @default.
- W1514097909 cites W2110710272 @default.
- W1514097909 cites W2115948840 @default.
- W1514097909 cites W2125545860 @default.
- W1514097909 cites W2131477567 @default.
- W1514097909 cites W2135487421 @default.
- W1514097909 cites W2140259111 @default.
- W1514097909 cites W2142463025 @default.
- W1514097909 cites W2145702696 @default.
- W1514097909 cites W2151219339 @default.
- W1514097909 cites W2162040794 @default.
- W1514097909 cites W2163353983 @default.
- W1514097909 cites W2172191993 @default.
- W1514097909 cites W2174684128 @default.
- W1514097909 cites W2530121532 @default.
- W1514097909 cites W2939474406 @default.
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