Characterizing and visualizing spatio-temporal patterns in hourly precipitation records

Burauskaite-Harju, AgneLinköpings universitet,Statistik,Filosofiska fakulteten (författare)

funding agencies|Swedish Research Council (VR)||Gothenburg Atmospheric Science Centre (GAC)||FORMAS|2007-1048-8700*51|
We develop new techniques to summarize and visualize spatial patterns of coincidence in weather events such as more or less heavy precipitation at a network of meteorological stations. The cosine similarity measure, which has a simple probabilistic interpretation for vectors of binary data, is generalized to characterize spatial dependencies of events that may reach different stations with a variable time lag. More specifically, we reduce such patterns into three parameters (dominant time lag, maximum cross-similarity, and window-maximum similarity) that can easily be computed for each pair of stations in a network. Furthermore, we visualize such threeparameter summaries by using colour-coded maps of dependencies to a given reference station and distance-decay plots for the entire network. Applications to hourly precipitation data from a network of 93 stations in Sweden illustrate how this method can be used to explore spatial patterns in the temporal synchrony of precipitation events.

Grimvall, AndersLinköpings universitet,Statistik,Filosofiska fakulteten(Swepub:liu)andgr70 (författare)
Walther, Alexander,1976Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences,Department of Earth Sciences, University of Gothenburg, Sweden(Swepub:gu)xwalta (författare)
Achberger, Christine,1968Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences,Department of Earth Sciences, University of Gothenburg, Sweden(Swepub:gu)xachch (författare)
Chen, Deliang,1961Gothenburg University,Göteborgs universitet,Institutionen för geovetenskaper,Department of Earth Sciences,Department of Earth Sciences, University of Gothenburg, Sweden(Swepub:gu)xchede (författare)
Burauskaite-Harju, B. (författare)
Linköpings universitetStatistik (creator_code:org_t)

Ingår i:Journal of Theoretical and Applied Climatology: Springer109:3-4, s. 333-3430177-798X1434-4483

Av författaren/redakt...: Burauskaite-Harj ...; Grimvall, Anders; Walther, Alexand ...; Achberger, Chris ...; Chen, Deliang, 1 ...; Burauskaite-Harj ...

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