Abstract: Understanding the basic structure and development of extratropical cyclones is still quite important in modern meteorology. For this purpose a simple analytical model has been developed that is qualitative as well as ...

Abstract: A four-dimensional data-assimilation method is described to derive synoptic ozone fields from total-column ozone satellite measurements. The ozone columns are advected by a 2D tracer-transport model, using ECMWF wind fields ...