Interactive comment on “Dynamical properties and extremes of Northern Hemisphere climate

Interactive comment on “ Dynamical properties and extremes of Northern Hemisphere climate fields over the past 60 years ” by Davide

The authors analyze dynamical properties of daily surface pressure, surface temperature and precipitation rate using two parameters from a universal distribution derived in previous research from extreme value theory of Poincaré recurrences. The two parameters, local dimension of the phase space attractor and the inverse of the average residence time, are physically intuitive, and have the pote...

Interactive comment on “Dynamical properties and extremes of Northern Hemisphere climate fields over the past 60 years” by Davide Faranda et al

QUERY: Authors present an important application of the of the extreme value theory to Poincaré recurrences in dynamical systems, which can provide estimations of some metrics of the ergodic chaotic attractors, namely the phase-space local dimension and local recurrence. Authors apply the technique to relevant daily fields: the sea level pressure, surface air temperature and precipitation rate, ...

Interactive comment on “Compound extremes in a changing climate - a Markov Chain approach” by K. Sedlmeier et al

Intensification of Northern Hemisphere subtropical highs in a warming climate

Semi-permanent high-pressure systems over the subtropical oceans, known as subtropical highs, influence atmospheric circulation, as well as global climate. For instance, subtropical highs largely determine the location of the world’s subtropical deserts, the zones of Mediterranean climate and the tracks of tropical cyclones. The intensity of two such high-pressure systems, present over the Nort...

Quasiresonant amplification of planetary waves and recent Northern Hemisphere weather extremes.

In recent years, the Northern Hemisphere has suffered several devastating regional summer weather extremes, such as the European heat wave in 2003, the Russian heat wave and the Indus river flood in Pakistan in 2010, and the heat wave in the United States in 2011. Here, we propose a common mechanism for the generation of persistent longitudinal planetary-scale high-amplitude patterns of the atm...