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Old 11-16-2009, 08:10 AM
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stompk stompk is offline
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Default Re: Contrails cannot form into clouds (proof!)

Quote:
Originally Posted by albie View Post
>>the USAF found that the forecasts using the Appleman method were correct about 60 to 80 percent of the time. Looking more closely at the data, they found that when no contrails were forecast, the forecast was correct 98 percent of the time! However, when contrails were forecast to occur, the forecast was correct only 25 to 35 percent of the time, and often failed to predict the occurrence of contrails.

What does this mean exactly? It seems to suggest the chart is inaccurate.
Your starting to figure that out?

Ask yourselves this question. If you can see your breath at 20f, why does the Appleman Chart say it needs to be at least -45f?

It's not the moisture in your breath, it's CO2.
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