AMS Forum: Climate Change Manifested by Changes in Weather


The influence of the MJO on Midlatitude statistical predictability

Richard Kleeman, Courant Institute of Mathematical Sciences, New York, NY; and M. Kadota

We examine the ensemble predictability of midlatitude weather under forcing from the tropics by the MJO. We use a primitive equation model of the atmosphere with an imbedded statistical/stochastic model of the MJO derived from the observations. Such a model has the advantage of having realistic representations of both the mid-latitudes as well as the MJO. In previous work without the MJO we found that predictability in the winter storm track region declines linearly to zero by 45 days. Here we examine whether this behaviour is affected by the MJO at any particular time scale. In addition we examine how the stochastic (broadband) nature of the MJO influences these conclusions. .

Session 3, THORPEX Special Session: Impacts of Processes over the Tropical Pacific and Indian Oceans on Mid-Latitude Weather and Predictability
Wednesday, 17 January 2007, 1:30 PM-5:15 PM, 214A

Previous paper  Next paper

Browse or search entire meeting

AMS Home Page