caa a22 4500 445799714 CHVBK 20180317145137.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s00704-010-0281-z doi (NATIONALLICENCE)springer-10.1007/s00704-010-0281-z Diurnal precipitation cycle in Austria [Elektronische Daten] [Asma Yaqub, Petra Seibert, Herbert Formayer] A back-trajectory clustering method was developed to identify synoptic patterns associated with heavy precipitation in Austria. Extending this work from daily precipitation sums to accumulation intervals from 12 to 48 hours, an unexpected problem was encountered related to the observation schedule of data. To modify available data to our specific needs, evening precipitation falling between 19 and 21 LT (Local Time) was studied. Hourly precipitation data for the period of 1950 to 2005 from 132 weather stations over Austria were used. It was found that the evening precipitation fraction has its maxima in the central Alps in all seasons, except in autumn when maxima shift more towards the south of the Alps. These results encouraged us to analyse the variation of diurnal precipitation for different seasons in Austria as well. A total of 119 stations with sixteen years (1990-2005) of data were used for this purpose. Mean hourly precipitation values were calculated, which were then normalised, smoothed and were finally clustered to find regions with homogeneous diurnal cycles. The diurnal cycles of precipitation of the centres exhibit systematic patterns and seasonal cycles, reflecting intensity and timing of convective activity over these regions. The winter season is relatively dry and summer is associated with the highest precipitation. The areas inside the Alps receive higher amplitudes of precipitation in summer. Interesting features such as bimodal distributions, nocturnal maxima and early morning maxima were also observed in many regions. Springer-Verlag, 2010 Yaqub Asma Institute of Meteorology, University of Natural Resources and Applied Life Sciences Vienna (BOKU), Vienna, Austria aut Seibert Petra Institute of Meteorology, University of Natural Resources and Applied Life Sciences Vienna (BOKU), Vienna, Austria aut Formayer Herbert Institute of Meteorology, University of Natural Resources and Applied Life Sciences Vienna (BOKU), Vienna, Austria aut Theoretical and Applied Climatology Springer Vienna 103/1-2(2011-01-01), 109-118 0177-798X 103:1-2<109 2011 103 704 https://doi.org/10.1007/s00704-010-0281-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00704-010-0281-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yaqub Asma Institute of Meteorology, University of Natural Resources and Applied Life Sciences Vienna (BOKU), Vienna, Austria aut NATIONALLICENCE 700 1- Seibert Petra Institute of Meteorology, University of Natural Resources and Applied Life Sciences Vienna (BOKU), Vienna, Austria aut NATIONALLICENCE 700 1- Formayer Herbert Institute of Meteorology, University of Natural Resources and Applied Life Sciences Vienna (BOKU), Vienna, Austria aut NATIONALLICENCE 773 0- Theoretical and Applied Climatology Springer Vienna 103/1-2(2011-01-01), 109-118 0177-798X 103:1-2<109 2011 103 704 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer