Introduction


The Blanket Effect is intended for others to learn about weather modification and its related subjects in an easy to understand way. Started in 2005, this blog is a work in progress as the technology advances

February 4, 2008

Wowie Zowie, Cool Effects

(note: Lidar is a relatively new radar type technology used in atmospheric testing as well as in other applications. The following excerpt is from The Atmospheric Radiation Measurement (ARM) Program site.)

The Micropulse Lidar (MPL) is a ground-based optical remote sensing system designed primarily to determine the altitude of clouds overhead. (image right from ARM site)




The physical principle is the same as for radar. Pulses of energy are transmitted into the atmosphere; the energy scattered back to the transceiver is collected and measured as a time-resolved signal. (image left: Measurements of the intensity of backscattered laser light on aerosols with lidar. Polluted boundary layer can be seen in the atmosphere up to 1.5 km, between 1.5 and 4.5 km a thick layer of Saharan dust is evident, and above 8 km a development of high clouds occurs.) (from University of Nova Gorica)

(Image at right: shows the reflectivity of clouds and precipitation during a thunderstorm over the instrument on April 5, 2004. image is from University of Utah)



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