The Radar Overview Page

The Radar images are at present shown only here and on the Forecast Corner, but will soon be made into a separate, browseable, dataset.
The images are produced by the Ross Meteorological Radar Laboratory, and the Cloud and Precipitation Physics Laboratory, at Tel Aviv University.
The Radar is located on top of the Medical Faculty at the Tel-Aviv university Ramat-Aviv Campus. The coordinates are 32 degrees and 7 minutes North, 34 degrees 48 minutes and 21 seconds East.
The Cloud and Precipitation Laboratory conducts research on the processes of cloud and precipitation development, on the interaction of aerosols and clouds, on the electrification of clouds and on the relations between lightning and precipitation.
Both experimental and theoretical approaches are undertaken.
As part of the experimental research the laboratory was directly involved in the study of dust storms and sprites on board the space shuttle Columbia (MEIDEX, Mediterranean Israeli Dust Experiment) with the late Ilan Ramon, the first Israeli astronaut. Some of the research is carried out using a dedicated airplane loaded with scientific instruments for measuring aerosols and clouds parameters.
A number of numerical model have been developed in the laboratory for the study of cloud and precipitation development, including the effect of cloud seeding for rain enhancement. The most recent addition to this effort was the development of a 3D numerical model of the electrical development of a field of thunderclouds. The aim of this model is to study the effects of topography on the generation of lightning and the mutual effects of the clouds on their neighbors.
The Cloud and Precipitation Laboratory houses the Ross Meteorological Radar Laboratory which operates a 5.6 cm Enterprise WR-100-5 weather radar for the investigation of clouds and storms in a region of about 200 km around Tel Aviv.
The data collected by the radar, and saved in a database at the Laboratory, is used as input for many of the numerical models, and for the study of the connection between lightning and precipitation.

Maximal radar reflectivity

The maximal radar reflectivity figure presents the radar reflectivity in dBz at each point in the investigated area, at altitudes from 0 to 15 km.
Radar reflectivity of about 10 dBz corresponds to rain intensity of about 0.1 mm per hour.
This figure must be used with caution because of radar artifacts such as ground clutter, refraction etc.
A more accurate estimate of rain intensity is shown in the figure of Rain Intensity where values greater than 1 mm per hour can be seen.

Rain Intensity

The rain intensity figure presents estimated rain intensity in millimeter per hour at each point in the area.
The color bar at the side of the figure shows the intensity, from 1 mm/h.
Please note that due to the curvature of the Earth and ground clutter the distance for accurate rain estimation is about 60 km around Tel Aviv.

Acknowledgement

We request that when publishing data or results using the Radar data, please acknowledge as follows:
Radar images were recorded by the Ross Meteorological Radar Laboratory, the Cloud and Precipitation Physics Laboratory,Tel Aviv University, and provided by ISA-MEIDA (http://nasa.proj.ac.il/).


Last update : 08 May 2003