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In this section you'll find many weather terms and their definitions. All of these weather terms are defined in as easy-to-understand terms as possible. Within each definition, if there is another word that has a meteorological definition, you can click-on it for its definition, as well. The weather terms are broken-up into alphabetical order by their first letter. These definitions come from valid meteorological sources. I invite you to see the bottom of this page for all the information sources I used to compile this list of definitions. If you have a weather term that is not listed on this site and you want to know what it means, e-mail the Webmaster for help.
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A | B |
C | D |
E | F |
G | H |
I | J |
K | L |
M | N |
O | P |
Q | R |
S |
T | U |
V | W |
X | Y |
Z
Y
YEAR
The interval required for the earth to complete one revolution around the sun. A sidereal year, which is the time it take for the earth to make one absolute revolution around the sun, is 365 days, 6 hours, 9 minutes, and 9.5 seconds. The calendar year begins at 12 o'clock midnight local time on the night of December 31st-January 1st. Currently, we operate under the Gregorian calendar of 365 days, with 366 days every four years, a leap year. The tropical year, also called the mean solar year, is dependent on the seasons. It is the interval between two consecutive returns of the sun to the vernal equinox. In 1900, that took 365 days, 5 hours, 48 minutes, and 46 seconds, and it is decreasing at the rate of 0.53 second per century.
YELLOW SNOW
Snow that is given golden, or yellow, appearance by the presence of pine or cypress pollen in it.
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