What measurement technique is used for wet-bulb temperature in adverse conditions like rain or snow?

Wet-bulb temperature is measured using a technique that involves a thermometer wrapped in a wet wick. In adverse weather conditions such as rain or snow, this measurement can be affected by the presence of water, which may lead to inaccuracies if standard methods are used without any modifications.

When precipitation occurs, it can cause the wet-bulb temperature to read higher than the actual value, because the added moisture can cool the wick more than it would in a controlled environment. To ensure an accurate assessment under these conditions, adjustments based on precipitation must be made. This could involve correcting the wet-bulb temperature reading to account for the additional moisture effect from rain or snow, thereby providing a more precise measurement that reflects the true atmospheric conditions.

Understanding this adjustment is crucial for meteorologists and aviation professionals as it helps ensure accurate weather reporting, which can significantly impact flight safety and operations.