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Predicting Weather By The Moon - Xavier University Libraries

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Tides<br />

the <strong>Moon</strong>’s phase allows them to experience such electrical<br />

field changes.<br />

We always talk about the Sun’s heat, but the <strong>Moon</strong><br />

has a heating effect on us too. In 1995 Robert Balling (of<br />

the team John Shaffer, Randall Cerveny and Robert Balling,<br />

of Arizona State <strong>University</strong>) found an influence of the<br />

<strong>Moon</strong>’s phase on daily global temperatures. In the course<br />

of a lunar cycle, it happens that the global temperatures in<br />

the lower troposphere (the lowest 6 kilometers of the atmosphere)<br />

are warmest about 5 to 8 days before the Full<br />

<strong>Moon</strong> and coolest during the New <strong>Moon</strong>, after which the<br />

temperatures cooled.<br />

During a period of nearly 5,934 days (more than 200<br />

synodic cycles) between 1979 and the early months of<br />

1995, the phase of the <strong>Moon</strong> accounted for a global variation<br />

in temperature of about 0.02 to 0.03 degrees Celsius.<br />

Maybe not enough to fear getting moonburnt, but it is significant<br />

enough to alter weather.<br />

<strong>The</strong> same team found that the <strong>Moon</strong> also heats the<br />

Earth’s poles. Using 17 years of satellite temperature data,<br />

they found that the poles show a temperature range of 0.55<br />

degrees C during a lunar month. This range of temperature<br />

is 25 times greater than for global temperatures as a whole.<br />

It shows that there is a strong pole-ward transfer of heat<br />

near the Full <strong>Moon</strong> but the transfer weakens near the New<br />

<strong>Moon</strong>.<br />

A study by Kirby Hanson and his colleagues at the<br />

National Oceanic and Atmospheric Administration showed<br />

a lunar effect on the timing of the maximum spring rainfall<br />

89

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