29 citations · 82 across the 10 of their papers we have counts for
10 papers
Capturing the Variability of the Nocturnal Boundary Layer through Localized Perturbation Modeling
Amandine Kaiser, Nikki Vercauteren, Sebastian Krumscheid
A single-column model is used to investigate regime transitions within the stable atmospheric boundary layer, focusing on the role of small-scale fluctuations in wind and temperatu…
On the motion of hairpin filaments in the atmospheric boundary layer
Abhishek Harikrishnan, Marie Rodal, Rupert Klein +2
A recent work of Harikrishnan et al. [arXiv:2110.02253 (2021)] has revealed an abundance of hairpin-like vortex structures, oriented in a similar direction, in the turbulent patche…
Guidelines for data-driven approaches to study transitions in multiscale systems: the case of Lyapunov vectors
Akim Viennet, Nikki Vercauteren, Maximilian Engel +1
We study in detail the role of covariant Lyapunov vectors and their respective angles for detecting transitions between metastable states in dynamical systems, as recently discusse…
Dynamical Stability Indicator based on Autoregressive Moving-Average Models: Critical Transitions and the Atlantic Meridional Overturning Circulation
Marie Rodal, Sebastian Krumscheid, Gaurav Madan +2
A statistical indicator for dynamic stability known as the indicator is used to gauge the stability and hence detect approaching tipping points of simulation data from a reduce…
Geometry and organization of coherent structures in stably stratified atmospheric boundary layers
Abhishek Harikrishnan, Cedrick Ansorge, Rupert Klein +1
Global intermittency is observed in the stably stratified Atmospheric Boundary Layer (ABL) and corresponds to having large nonturbulent flow regions to develop in an otherwise turb…
Definition, detection, and tracking of persistent structures in atmospheric flows
Johannes von Lindheim, Abhishek Harikrishnan, Tom Dörffel +8
Long-lived flow patterns in the atmosphere such as weather fronts, mid-latitude blockings or tropical cyclones often induce extreme weather conditions. As a consequence, their desc…
Statistical learning of nonlinear stochastic differential equations from non-stationary time series using variational clustering
Vyacheslav Boyko, Sebastian Krumscheid, Nikki Vercauteren
Parameter estimation for non-stationary stochastic differential equations (SDE) with an arbitrary nonlinear drift, and nonlinear diffusion is accomplished in combination with a non…
Detecting regime transitions of the nocturnal and Polar near-surface temperature inversion
Amandine Kaiser, Davide Faranda, Sebastian Krumscheid +2
Many natural systems undergo critical transitions, i.e. sudden shifts from one dynamical regime to another. In the climate system, the atmospheric boundary layer can experience sud…
Statistical investigations of flow structures in different regimes of the stable boundary layer
Nikki Vercauteren, Vyacheslav Boyko, Amandine Kaiser +1
A combination of methods originating from non-stationary timeseries analysis is applied to two datasets of near surface turbulence in order to gain insights on the non-stationary e…
Scale interactions and anisotropy in stable boundary layers
Nikki Vercauteren, Vyacheslav Boyko, Davide Faranda +1
Regimes of interactions between motions on different time-scales are investigated in the FLOSSII dataset for nocturnal near-surface stable boundary layer (SBL) turbulence. The non-…