EGU NP Division Campfire

Scaling and multifractals : from historical perspectives to recent developments

Scaling law behaviours are ubiquitous in geosciences both from a theoretical and practical point of view. They are required to better understand, analyse and simulate the underlying processes, which yields the observed variability of geophysical fields over wide ranges of spatio-temporal scales.

Adapted from G. Sarma et al. 1991

A group of scientists within the Nonlinear Processes in Geosciences (NP) Division of the European Geosciences Union (EGU) is launching in the “campfire” framework* a series of webinars on “Scaling and multifractals : from historical perspectives to recent developments.”
The aim of the “campfire” is to hear first-hand from internationally recognized

experts of the field their personal perspectives on scaling and multifractals. They will share their thoughts on the historical background of the field as well as its recent developments and future goals. This unique opportunity, targeted to both early career scientists and established researchers, aims at fostering discussions within the research community to push it toward pursuing past achievements.

Registration is free but mandatory. To register, simply send an email to sympa@liste.enpc.fr with “subscribe egu_np_campfire_multifractals” (without the quotation marks) as title. Link to connect will be sent shortly before the webinar.

Schedule (CET used) :

Webinar 1 : 11/01/2022 10:00-11:30

– Bérengère Dubrulle : “Global and local multifractal analysis” (pdf)
– Daniel Schertzer : “A century of cascades and the emergence of multifractal operators” (pdf)

Webinar 2 : 18/01/2022 16:00-17:30

– Shaun Lovejoy : “Multifractals, Intermittency, Spectra and Climate Variability Across Scales” (pdf)
– Witek Krajewski : “Scaling of peak flows in a river network” (pdf)

Webinar 3 : 25/01/2022 10:00-11:30

– Andreas Langousis : “Robust estimation of rainfall extremes and their evolution in a changing climate: A CONUS-wide assessment based on multifractal theory” (pdf)
– Adrian Tuck : “Scaling Up: Molecular to Meteorological via Symmetry Breaking” (pdf)

Webinar 4 : 01/02/2022 16:00-17:30

– François Schmitt : “Discrete and continuous multifractal cascade models: historical roots and application to turbulence” (pdf)
– Charles Meneveau : “A new multifractal version of Navier-Stokes based model of velocity gradients in turbulence” (pdf)

Organizing committee :

Auguste Gires (HM&Co – ENPC, France)
Tommaso Alberti (INAF-IAPS, Italy)
Yongxiang Huang (Xiamen University, China)

*Since last year, the European Geosciences Union (EGU) supports events called “Campfire”, which enables Divisions to run tailored online interactive events.