The illustration above shows two soil levels: Water Penetration Level—the depth at which surface water no longer seep through and Evaporation water Level—the depth at which water that is in the soil can’t be evaporated by the day time heat of the surface weather above These levels can be ordered as shown or an...
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Here is a collection of maps from How Stuff Works on Precipitation, Land Use, Climate, Vegetation, and People Density. Annual Precipitation Map of the World Climate Map of the World Land Use Map of the World Population Density Map of the World Vegetation Map of the World
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This is map of total rainfall around the world. Source: NOAA.
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Information on evapotranspiration from Wikipedia: “Potential evapotranspiration supplements the measurement of rainfall in providing a scientific measurement-based definition of a desert. The water budget of an area can be calculated using the formula P − PE ± S, wherein P is precipitation, PE is potential evapotranspiration rates and S is amount of surface storage...
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“Encyclopedia of Deserts” by Michael A. Mares, Oklahoma Museum of Natural History (Norman, Okla.) is a good source of information on dew formation in the desert. Here’s a quote from page 177: “It is not exactly known how much dew forms on plants in desert areas, although it rage from 10 millimeters in cold...
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Dew-Point from Weather Online: Dew point (ger: Taupunkt; fr:point de rosée) or condensation point is the temperature at which a parcel of air must be cooled at constant pressure and humidity mixing ratio until it reaches saturation, and at which condensation of water vapor forms either as dew, cloud droplets, ice crystals, mist or...
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“Desert Meteorology” by Thomas T. Warner provides information on dew quantities in the desert environments. It gives a table that compares the amount water accumulated from fog as opposed to rainfall. Since our project focuses on dew and collection of water from dew, this is an important source.
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Here’s a link to wikipedia’s definition of a desert. Here you can learn about precipitation averages in a desert environment.
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Nicholas Werby is a 12th grader at Lowell High School in San Francisco.
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Timothy Werby is now a Freshman at UC Berkeley. (2012)
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Our mentor at University of California at Berkeley is Professor Alice Merner Agogino, the Roscoe and Elizabeth Hughes Professor of Mechanical Engineering.
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Lowell High School is the best high school in San Francisco! We are working with our science teacher, Ms. Lisa Seawell Cole. She is part of Lowell High School Science Department and teaches Biology, Ecology, and Health Science.
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EDF Group, a French based Energy leader in Europe, has launched Watt’s Next: The EDF Sustainable Design Challenge, in collaboration with the French Design Promotion Association, APCI . The EDF Sustainable Design Challenge focuses on the materialization of day-to-day energy efficient solutions for a better quality of life based on the efficient use of...
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We’ve got an invitation to The Energy Lab — EDF’s new pavilion in France, featuring the winning designs from the EDF Sustainable Design Challenge....
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Our project and its video was just posted on The Water Channel! Here’s a description of what they do: TheWaterChannel was launched at the...
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So now we have three prototypes: two from India and one locally-produced. They are very different. But the latest version is what we are...
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We just got our first glimpse of DRIPS from India — these were produced in India and are being shipped to us now. Can’t...
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This year (2011), we are still focusing on food. We want to know the true cost of food — its price; the distance it...
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