# Training module on Cyclogenesis

## Table of Contents

Begin

In this module, the two major mid-latitude cyclone models, the Norwegian cyclone model and the Shapiro-Keyser cyclone model, will be explained in detail. The intention of the module is to point out the main differences in the life cycles of cyclones of the Norwegian type and the Shapiro-Keyser (S-K) type. Special focus will be placed on the synoptic preconditions that lead to the formation of cyclones.

Finally, sting jets, which often appear in the context of Shapiro-Keyser cyclones, will be briefly introduced.

Learning objectives:

In this module, you will learn more about the major differences that characterize the classical Norwegian cyclone model and the more recent Shapiro-Keyser model, and increase your ability to differentiate them when analyzing fronts from NWP charts and in combination with satellite images. After finishing this module, you will be able to use both models to diagnose the current state of the atmosphere.

Audience:

This module addresses those with a basic knowledge of cyclogenesis. It focusses particularly on forecasters who want to know more about the differences between the Norwegian and Shapiro-Keyser cyclone models.

* TECHNICAL NOTE: For the best interactive experience throughout this module please use the most recent versions of Firefox, Google Chrome or Internet Explorer browser!