Check with us for proper combination for your test. The visual background environment is largely determined by climate. ATC offers a true four-season background environment along with its excellent test facilities. These visual environments are typical of higher-probability engagement areas of the world. It is the temperature that would cause the same heat loss if the wind were 4.5 mph.
Higher winds cause more heat loss due to more efficient conduction.
For an equivalent heat loss at 4.5 mph, the air temperature would have to be lower than it is in a higher wind speed condition. ATC regularly monitors and makes wind-chill temperatures available throughout the winter months. Another strategy is to avoid outside work, not necessarily at very low temperatures, but at low temperatures with high wind speeds. Measurements Good wind measurements are often difficult to obtain, especially in complex terrain. To get useful wind data for your test, please consult with meteorology personnel.