Radar Data - Mali

  • Radar Description
Mali Radar map
Radar locations in Mali

Location and Data

Radars are located at Bamako, Manantalli, and Mopti. Reflectivity (dBZ) and velocity (VR) data from the radars are no longer available on this website.

Description

NCAR/RAL in coordination with Weather Modification Incorporated (WMI) has completed deploying three C-band weather radars in Bamako, Manantalli, and Mopti.  The radars include the NCAR HIQ receivers, which offer Doppler capability. 
The radars (1) continuously collect information on natural cloud characteristics, (2) help direct the operations with the cloud physics aircraft, and (3) provide general information to weather forecast personnel. NCAR has implemented analysis and display software systems (e.g. TITAN/CIDD/CTREC), along with possible hardware upgrades necessary for ingesting high-quality radar data.

An essential part of the radar analysis will be to determine the number of storms occurring over Mali. This is important in order to understand (1) the number of storms that occur naturally in the various regions around Mali, (2) the length of time that might be necessary in order to perform a later randomized experiment that would quantitatively describe the potential rainfall increase from seeding, (3) to assess the operational aircraft needs in treating these storms in a timely manner, and (4) to conduct a very preliminary estimate the overall area rainfall increases that might be possible from seeding. Using TITAN, the typical lifetimes, sizes, and intensities of rain events will be determined, in order to compare the Arabian storm climatology to those observed in other parts of the world.

The dynamical organization of storms responsible for the bulk of the rainfall will also be documented. A significant number of rainstorms are likely to be convective in nature (isolated storms as well as embedded).  Among the convective storms, it is important to determine whether they are organized in individual convective units, or whether they often occur in organized lines. If there are a lot of line storms, then it may be necessary to adopt a different method of objectively characterizing the convective unit from what has been used in other recent seeding projects.

The software includes the NCAR Thunderstorm Identification Tracking Analysis and Nowcasting (TITAN), and the Configurable Integrated Data Display (CIDD), and Radar Echo Classifier (REC) software systems. Both the TITAN and CIDD displays have been implemented and will be used for viewing real-time and archived data. Using the TITAN system, data from the radars will be collected in volume-scan mode. TITAN identifies each storm seen by the radar, tags it with a specific identifier, determines the storm properties (such as height, volume, area, centroid, intensity, rainfall, speed of motion), and tracks it over time. The TITAN radar histories for a whole season can be stored on a single computer disk for later analysis and evaluation, making it an extremely useful archive and research tool. Overall, the radars will monitor the characteristics of the rainstorms to understand the following aspects: (1) the large-scale organization of the storms, (2) their frequency of occurrence and spatial distribution in the study area, (3) the temporal history, sizes, intensities and rainfall of individual storms, (4) the kinematic storm structures, and (5) divergence profiles from radar VAD profiles and aircraft measurements. An essential part of the radar analysis will be to determine the frequency of storms occurring over the various areas.