Special Session 113: Recent Advances in Uncertainty Quantification and Scientific Machine Learning with Applications to Complex Dynamical Systems

Capturing Prediction Uncertainty in Data Assimilation
Tijana Janjic
KU Eichstaett Ingolstadt
Germany
Co-Author(s):    Catherine George, Alireza Javanmardi, Eyke Huellermeier
Abstract:
Quantification of evolving uncertainties is required for both probabilistic forecasting and data assimilation in weather prediction. In current practice, the ensemble of model simulations is often used as primary tool to describe the required uncertainties. In idealized settings, using toy models that mimic convective situations, we explore two alternative approaches, so called stochastic Galerkin method which integrates uncertainties forward in time using a spectral approximation in the stochastic space and machine learning approach based on conformal prediction.