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Space‐time scaling in high‐intensity Tropical Ocean Global Atmosphere Coupled Ocean‐Atmosphere Response Experiment (TOGA‐COARE) storms
Author(s) -
Deidda Roberto,
Badas Maria Grazia,
Piga Enrico
Publication year - 2004
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/2003wr002574
Subject(s) - atmosphere (unit) , environmental science , tropical cyclone , precipitation , downscaling , climatology , storm , meteorology , range (aeronautics) , intensity (physics) , atmospheric sciences , geography , geology , physics , materials science , quantum mechanics , composite material
A scale‐invariance analysis of rainfall retrieved during the Tropical Ocean Global Atmosphere Coupled Ocean‐Atmosphere Response Experiment (TOGA‐COARE) campaign is discussed. As already found in the previous Global Atmospheric Research Program (GARP) Atlantic Tropical Experiment (GATE) rainfall data set, these new analyses of high‐intensity storms confirm the evidence of scale invariance under self‐similar space‐time transformations. A simple interpretation of this space‐time self‐similarity accounting for the hierarchical organization of precipitation patterns is proposed. Finally, a downscaling model based on a log‐Poisson generator is calibrated on the results of the multifractal analysis and applied to the generation of synthetic fields, reproducing observed statistical properties over a wide range of space scales and timescales.