Most summers there comes a time where many parts of the country are in desperate need of rain fall. About this time we generally get a report showing areas of the United States that experiencing drought conditions. Although rain fills our lakes, river and streams, and gives plants much needed water we fail to notice the beauty of falling rain. Let do a bit of an educational review of what exactly is rain.

Rain is defined as liquid precipitation, as opposed to non-liquid kinds of precipitation. From the Earths atmosphere, it is the condensation water vapor into drops of water heavy enough to fall, often making it to the surface. There are two natural processes, that acting together, can lead to air becoming saturated leading to rain to fall: The first is the cooling the air or adding water vapor to the air allowing to become saturated with water. The other process called Virga is precipitation that begins falling to the earth but evaporates before reaching the surface. We often can see Virga from weather Doppler radars when it looks like it is rain in a area but it is not reaching the surface because atmospheric conditions are not saturated enough. Precipitation forms via collision with other rain drops or ice crystals within a cloud. Rain drops range in size from oblate, pancake-like shapes for larger drops, to small spheres for smaller drops.

Ever wonder what water looks like when it hits the surface, or another body of water? Below is a video of just what happens.



Rainwater Catchment for Drinking Water:
A proposed law would require new homes, larger developments and some redevelopments in Los Angeles to capture and reuse runoff generated in rainstorms. An ordinance approved in January 2010 by the Department of Public Works would require such projects to capture reuse or infiltrate 100 percent of runoff generated by anything greater than .75 inches of rain. The new requirement would prevent 104 million gallons of polluted runoff from ending up in the ocean. The ordinance moves to the Energy and Environment and Planning and Land Use management committees of city council before going to the mayor’s office.
This is not only a solution that would be good for local governments that are rain deprived areas of the country but also could offer home owners a way of providing water for their household. Home owners are starting to see the benefits of such a solution of a rain water catchment system. Rainwater catchment system works by collecting rain water into an atmospheric hold tank, then water is pumped out, then leading to carbon and sediment pre-filters and then passed through a UV water purification system. UV water purification systems then kill all major bacteria and viruses.

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