Various components of climate models, as covered at CESM summer school
21 Dec 2015 | Presentations | Contributor(s): Colin James Grudzien
Earth Systems Models Focus Group talk on Thursday, October 24th, 5:00pm EDT
Early warning indicators for transitions in high-dimensional dynamical systems
17 Jan 2016 | Presentations | Contributor(s): Henk Dijkstra
Two examples are presented. 1. Networks: The Atlantic Meridional Overturning (MOC), and 2. Transfer operators: Midlatitue Atmospheric Flow Transitions
Topics from Biogeochemistry - Webinar, January 11, 2016
20 Jan 2016 | Presentations | Contributor(s): Hans G Kaper
In this talk I give some examples of mathematical problems in biogeochemistry. The talk is based on Chapter 18 of "Mathematics & Climate" by Hans Kaper and Hans Engler, OT131, SIAM, Philadelphia,...
NBRIT Webinar 1/19/16: Peter Ashwin presents on Tipping Points for Parameter Shifts
20 Jan 2016 | Presentations | Contributor(s): Peter Ashwin
Abstract: It seems that a mathematical definition for tipping points or critical transitions in general may be very difficult owing to the wide range of phenomena that are usefully classified as tipping points. However in some contexts a definition that goes beyond classical bifurcations may be...
An application of Lagrangian data assimilation to Katama Bay, MA
02 Feb 2016 | Presentations | Contributor(s): Laura Slivinski
Data assimilation is the process of combining predictions from numerical models with observations of the system. Fully Lagrangian data assimilation seeks to directly assimilate trajectories from drifters into some circulation model. This talk will provide a brief overview of Lagrangian data...
A broadly applicable method for the identification of bifurcations in complex, multi-parameter dynamical systems
16 Jun 2015 | Presentations | Contributor(s): Daniel K Wells, Adilson Motter, William L Kath
Traditional numerical bifurcation methods seek to identify and classify solutions in systems with small numbers of parameters. These methods have become canonical tools in determining how solutions of dynamical systems depend upon parameters. Of particular interest are bifurcation points, which...
Who, or what, will tip the big climate models?
18 Jun 2015 | Presentations | Contributor(s): Christopher KRT Jones
Extending the square root method to account for model noise in the ensemble Kalman filter
25 Feb 2015 | Presentations | Contributor(s): Patrick Raanes
Presented by Patrick Raanes on 2-18-2015 Abstract:A novel approach to account for model noise in the forecast step of the Ensemble Kalman filter (EnKF) is proposed. The core method is based on the approach of the analysis step of ensemble square root filters (ETKF), and...
Complex networks: a useful tool to detect climate transitions?
18 Jun 2015 | Presentations | Contributor(s): Henk Dijkstra
Local and non-local mechanisms of Arctic warming
25 Feb 2016 | Presentations | Contributor(s): Vladimir Alexeev
Polar amplification (PA) is a prominent feature of currently observed and predicted future climate change suggested by both observations and models. We will discuss several PA mechanisms and feedbacks in the ocean and the atmosphere suggested by different researchers and connect it to the real...