A bimodality trap in model projections
Abstract
We expose a phenomenon that can occur in the process of joint state and parameter estimation. Such estimation is crucial in tuning parameters for climate models and offline parameterizations used in the models. We show how a bimodal distribution can temporarily appear during this process and that a scheme relying on linear and Gaussian approximations may cause it to get trapped in the wrong mode and hence lead to faulty estimation. We propose a practical and effective resolution using a two-stage filtering process.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Mar 01, 2015
- Source ID
- 10.1063/1.4915090
Entities
People
- Chris Jones
- Naratip Santitissadeekorn
Organizations
- National Science Foundation
- Office of Naval Research
- University of North Carolina at Chapel Hill
- University of Surrey