Comparison of Two Convective/Stratiform Precipitation Classification Techniques: Radar Reflectivity Texture versus Drop Size Distribution–Based Approach (original) (raw)

2013, Journal of Atmospheric and Oceanic Technology

Analysis of convection in events with high amounts of precipitation using the meteorological RADAR

During the 1996-2000 period more than 40 heavy rainfall events were recorded in the Internal Basins of Catalonia (NE of Spain). The present paper shows different types of convection organisation and other features, as for instance, its vertical development. For the detection of convection using meteorological radar, two kinds of convective structures were considered: firstly, convective cells, defined as a region of maximum reflectivity in 3D, and, secondly, convective structures at the lowest level (2D), obtained as a result of the application of the SHY algorithm. The 2-D algorithm classifies the pixels as rainfall/non rainfall and, then, it chooses those that satisfy certain requirements and it considers them as 'convective' while the other pixels of 'rainfall' are classified as 'stratiform'. The 3-D procedure considers three steps in the analysis of the volume radar: first of all, it selects those areas which exceeded one of the considered reflectivity th...

Loading...

Loading Preview

Sorry, preview is currently unavailable. You can download the paper by clicking the button above.