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Weather. ©Mark Place, 2009-2010 www.LearnEarthScience.com. weather basics. Where does the energy for weather originate?. the uneven heating of the Earth’s surface. weather basics. In the US, the general direction that weather systems move is toward. the northeast. Station Models.

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Weather

©Mark Place, 2009-2010

www.LearnEarthScience.com


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weather basics

Where does the energy for weather originate?

the uneven

heating

of the Earth’s

surface


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weather basics

In the US, the general direction that weather systems

move is toward

the

northeast


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Station Models

Please go to page 13 of the

ESRTs

Temperature and

dewpoint are measured in

degrees _______

F


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Cloud Cover

Temperature

76

138

Wind Direction

&

Speed

..

-30\

Current Weather

55

Dewpoint

Barometric

Trend

Barometric

Pressure


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Station Model

Practice


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Evaporation Rates

Relative Humidity

Temperature

Surface Area


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What natural process

cleans the atmosphere?

Rain

precipitation

Snow

Hail



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Cools to the

dewpoint

Expands

Warm

Air Rises


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Clouds are likely to form when:

The air is saturated and rising

The temperature is at the dewpoint

Condensation nuclei are available


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As air temperature increases

the air can hold

more water


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Sling Psychrometer

Dry bulb measures

air temperature

Wet bulb temp is

lower due to evaporation


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Using the charts on page 12 of the ESRTs, calculate the relative

humidity and dew point using the following information.

60

6

15

12

58

7

55

23

13

9

5

Dewpoint Chart

RH Chart


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Relative Humidity relative

vs

Air Temperature

Indirect

Relationship

as temp increases

RH decreases


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As dew point increases, relative

the amount of

moisture in the air

INCREASES


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As temperature relative

and

dewpoint get closer together,

the probability of precipitation

INCREASES


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Which has the greatest relative

probability of precipitation?


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