8. Consider Figure 2.22a, a water vapor image taken at 1715Z on June 4, 1997. Fo

Question

8. Consider Figure 2.22a, a water vapor image taken at 1715Z on June 4, 1997. Focus on the dark swath that stretches from the Gulf of Mexico across Florida and out over the Atlantic Ocean. Figure 2.22b is a surface weather map at 17Z, showing station models. The number to the lower left of the cloud circle (below the temperature) in the station model is called the dew point. The dew point is an absolute measure of the amount of water vapor in the air (that is, the higher the dew point, the more water vapor in the air). We will study the dew point in detail in Chapter 6, but for now, be advised that.dew points above 65°F indicate that the surface air is rather humid. Yet many television weathercasters will use images just like Figure 2.22a as evidence that "the air is dry." Explain this apparent paradox.

Explanation / Answer

As the figure a shows the water vapour image and dark parts are on above the gulf of maxico and Atlantic ocean .So we can conclude that the air above that is dry but as per figure 2b the air is humid but as ocean air is dry so the televisions show that the air is dry .

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