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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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Presentation Transcript
slide1

Weather

©Mark Place, 2009-2010

www.LearnEarthScience.com

slide2

weather basics

Where does the energy for weather originate?

the uneven

heating

of the Earth’s

surface

slide3

weather basics

In the US, the general direction that weather systems

move is toward

the

northeast

slide4

Station Models

Please go to page 13 of the

ESRTs

Temperature and

dewpoint are measured in

degrees _______

F

slide5

Cloud Cover

Temperature

76

138

Wind Direction

&

Speed

..

-30\

Current Weather

55

Dewpoint

Barometric

Trend

Barometric

Pressure

slide7

Evaporation Rates

Relative Humidity

Temperature

Surface Area

slide8

What natural process

cleans the atmosphere?

Rain

precipitation

Snow

Hail

slide10

Cools to the

dewpoint

Expands

Warm

Air Rises

slide11

Clouds are likely to form when:

The air is saturated and rising

The temperature is at the dewpoint

Condensation nuclei are available

slide12

As air temperature increases

the air can hold

more water

slide13

Sling Psychrometer

Dry bulb measures

air temperature

Wet bulb temp is

lower due to evaporation

slide14

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

slide15

Relative Humidity

vs

Air Temperature

Indirect

Relationship

as temp increases

RH decreases

slide16

As dew point increases,

the amount of

moisture in the air

INCREASES

slide17

As temperature

and

dewpoint get closer together,

the probability of precipitation

INCREASES

slide18

Which has the greatest

probability of precipitation?

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