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--></style><title>Water requirements of urban
agriculture</title></head><body>
<div>Sample quote:<font face="Verdana"> "Over the 75 day cropping
cycle, median crop water requirements as ETc were 17% less than that
required for a well-watered grass (as ETo). If all lawns in our
modeled area were replaced with crops, we estimate that about 37% of
the resident population could obtain the vegetable portion of their
diet from within the local area over a 150 day growing season. However
doing so would result in augmented water demand if watering
restrictions apply to lawns only. The CityCrop model can therefore be
useful to evaluate trade-offs related to urban agriculture and to
inform municipal water policy development."</font></div>
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<div><font face="Arial" color="#000000">Full article, open access,
here:</font></div>
<div>http://iopscience.iop.org/1748-9326/10/6/064007/article</div>
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"The most likely way the climate could be influenced by either
natural or artificial means seems to be through a trigger mechanism
that ultimately changes the radiation balance .... the burning of
fossil fuels would presumably lead to more absorption of long-wave
terrestrial radiation in the atmosphere and consequently to greater
heating."<br>
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Abraham Oort. "The Energy Cycle of the
Earth,"</font></div>
<div><font face="Geneva" size="-1" color="#000000"><i>Scientific
American</i>. September 1970<br>
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</font><font face="Lucida Grande" size="-1" color="#000000">"The
molecule of carbon dioxide has strong absorption bonds, particularly
in the infrared region of the spectrum at wavelengths of from 12 to 18
microns. This is the spectral region where most of the thermal energy
radiating from earth to space is concentrated. By increasing the
absorption of this radiation ... the carbon dioxide reduces the amount
of heat energy lost by earth to outer space."<br>
<br>
Fred S. Singer, "Human Energy Production as a process in the
biosphere,"</font></div>
<div><font face="Lucida Grande" size="-1"
color="#000000"><i>Scientific American</i>, September 1970.<br>
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