![]() ![]() ![]() Do be aware that the formula is followed directly and that the introduction of other scales is for ease of the user in etering data. In our calculator, enter the station altitude (that is where the temperature and dew point are measured) in either feet or meters, the temperature and the dew point, in degrees C or F. Here is the current NOAA aviation weather. The altitude at which this spread becomes zero can be calculated using the stated formula. Thus the spread between the air temperature and dew point decreases by 4.5☏ per 1000 feet. The dew point also decreases at about 1.0☏ over the same distance. The rate at which air cools as it rises is averaged at 5.5☏ per 1000 feet the variable is the speed of the rising air mass. The point at which when air is cooled to the temperature that it can no longer hold its moisture is called the dew point. ![]() At some point, the moisture in the air exceeds the value which that air mass can hold, forcing the water vapor to condense, forming clouds. As a mass of air rises, particularly on warm and humid days, it expands in the lowering air pressure, causing the air mass to cool and greatly reducing the air's ability to hold moisture. The formula for calculating the approximate base of the formed clouds isĬloud Base Altitude = ((((temperature - dew point) / 4.5) * 1000) + measure station altitude). This calculator is designed to give an approximate but calculated altitude for the base of cumulus clouds, based on entered data. This calculator requires the use of Javascript enabled and capable browsers. ![]()
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