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Report of STAHY session at EGU 2010

The STAHY Working group co-sponsored the session HS5.5/NP6.10 “Stochastics in hydrometeorological processes: from point to global spatial scales and from minute to climatic time scales” Convener: Demetris Koutsoyiannis, Co-Conveners: Ezio Todini, Alin Andrei Cârsteanu, Salvatore Grimaldi.
The session involved 5 oral contributions and 10 poster (listed at the end of the report) and was attended by more than 150 people.
All the authors delivered interesting presentations underlined by a rich discussion.
Of particular interest was the invited lecture given by Prof Roberto Deidda. An insightful presentation on rainfall downscaling multifractal models was given leading to good discussion on the future development of this approach and on the problem in the estimation of high order moments.
In the afternoon session interesting posters were shown about Hurst Kolgomorov process by a rich group of greek scientists

Vienna, May 3rd, 2010
Salvatore Grimaldi


List of Oral  and Poster contributions shown during the session some pictures links to the pdf presentation files

Roberto Deidda
“Space-time rainfall downscaling with multifractal models” (solicited) (download the presentation)

Annalisa Molini, Gabriel Katul, and Amilcare Porporato
“Scale-wise evolution of rainfall probability density functions fingerprints the rainfall generation mechanism”

Valeria Montesarchio and Francesco Napolitano
“An entropy based rainfall disaggregation model” (download the presentation)

Georg Pistotnik
“Introducing stochastics into the simulation of convective precipitation events”

Yannis Dialynas, Panagiotis Kossieris, Kyriakos Kyriakidis, Archontia Lykou, Yannis Markonis, Christoforos Pappas, Simon-Michael Papalexiou, and Demetris Koutsoyiannis
“Optimal infilling of missing values in hydrometeorological time series” (download the presentation)

Panayiotis Dimitriadis, Demetris Koutsoyiannis, and Athanasios Paschalis
“Three dimensional Hurst-Kolmogorov process for modelling rainfall fields” (download the poster)

Hristos Tyralis and Demetris Koutsoyiannis
“Performance evaluation and interdependence of parameter estimators of the Hurst-Kolmogorov stochastic process”

Yannis Dialynas, Panagiotis Kossieris, Kyriakos Kyriakidis, Archontia Lykou, Yannis Markonis, Christoforos Pappas, Simon-Michael Papalexiou, and Demetris Koutsoyiannis
"Optimal infilling of missing values in hydrometeorological time series"  (download the poster)

Stefanos Kozanis, Antonios Christofides, Nikos Mamassis, Andreas Efstratiadis, and Demetris Koutsoyiannis
"Hydrognomon - open source software for the analysis of hydrological data" (download the poster)

T.E. Govindan, V. Venugopal, Alin A. Carsteanu, and Jorge J. Castro
"Breakdown Coefficients' Statistics of Indian Monsoon Precipitation: Considerations of Scaling and Stationarity"

Antonino Cancelliere, B. Bonaccorso, and G. Rossi
"Estimation of extreme hydrological quantiles in non stationary series"

Elena Volpi, Federico Lombardo, Fabio Russo, Francesco Napolitano, and Luca Baldini
"Study on multifractal modeling of rainfall" (download the poster)

Maura Rianna, Francesco Napolitano, and Fabio Russo
"Stochastic Index estimation of flow duration curves on ephemeral basins" (download the poster)

Hwa-Lung Yu and Tu-Je Chang
"Application of hierarchical clustering method to classify of space-time rainfall patterns" (download the poster)

Susana Barbosa
"Testing for deterministic trends in global sea surface temperature" (download the poster)



Roberto Deidda                             Annalisa Molini                             Valeria Montesarchio

Georg Pistotnik                                   Yannis Dialynas                                   Christoforos Pappas     

Panayiotis Dimitriadis                        Demetris Koutsoyiannis                      Group of Greek Students


Stefanos Kozanis                            Antonino Cancelliere                              Maura Rianna


Federico Lombardo                              Hwa-Lung Yu                                       Susana Barbosa








Ministero dell'Ambiente e della Tutela del Territorio e del Mare

Institute for Environmental Protection and Research

 Honors Center of Italian Universities - H2CU 
Sapienza University of Rome

University of Tuscia,
Viterbo, Italy


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