If the hPa value is 200 hPa, what is the corresponding feet ASL?

To determine the altitude corresponding to a pressure of 200 hPa, it is essential to understand the relationship between atmospheric pressure and altitude. Standard atmospheric pressure at sea level is approximately 1013.25 hPa (hectopascals). As altitude increases, atmospheric pressure decreases, and this relationship can be described using the barometric formula.

In practice, at approximately 200 hPa, we are looking at an altitude well into the stratosphere. The general rule of thumb is that a pressure decrease of about 100 hPa corresponds to an increase in altitude of about 30,000 feet in the upper atmosphere. Therefore, a pressure level of 200 hPa indicates that the altitude is significantly higher than typical cruising altitudes for commercial aircraft.

Using this knowledge, flying at 200 hPa would generally be around 38,000 feet above sea level (ASL). This is supported by atmospheric data that shows the pressure level and associated altitudes, where around this low pressure, you'd indeed be in the vicinity of 38,000 feet. Thus, selecting the correct answer reflects an understanding of atmospheric characteristics at high altitudes.