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# Meteorology (Weather)/Phrase definition

Question
I am constantly seeing media meteorologists say "a piece of energy is going to move through or across an area" or a low pressure system is going to "spin off a spoke of energy". I can't find any information that explains what they mean by "piece of energy". I have a fairly good understanding of energy in the physics sense so I am wondering if this is a misnomer. Are these areas of higher temperature, lower pressures, or what. Thanks for your time.

Hi David

First, "energy" is vorticity:

http://ww2010.atmos.uiuc.edu/%28Gh%29/guides/maps/fcst/5vrthght.rxml

http://www.theweatherprediction.com/habyhints/56/

http://tropic.ssec.wisc.edu/real-time/windmain.php?&basin=atlantic&sat=wg8&prod=

And, Phasing:

http://theweathercentre.blogspot.com/2011/01/weather-explained-phasing.html

http://www.americanwx.com/bb/index.php/topic/2173-recognizing-phasing-jets-prior

http://weatherchatroom.forumotion.com/t72-what-the-hell-is-phasing-and-what-does

http://www.weatherknowledge.com/learn.html
Questioner's Rating
 Rating(1-10) Knowledgeability = 10 Clarity of Response = 5 Politeness = 10 Comment Reviewing your links I conclude that vorticity and phasing are combinations of thermal and kinetic energy as they both describe masses of air of varying temperatures being in motion. This confirms my suspicion that TV meteorologists throw out the phrase "piece of energy" to over simplify their weather broadcasts. Thanks very much.

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Meteorology (Weather)

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#### Donald Rosenfeld

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Any questions (except private) answered from the 1st grade level on up pertaining to any aspect of Weather. I am a 20 year member of the American Meteorological society and a long time forecaster of eastern United States snow storms and Hurricanes.