The Low-Level Windshear Alert System (LLWAS) is designed to detect what?

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Multiple Choice

The Low-Level Windshear Alert System (LLWAS) is designed to detect what?

Explanation:
The main idea is spotting hazardous changes in the low-level wind that can affect aircraft on approach or departure. LLWAS uses a network of ground sensors to monitor wind speed and direction at multiple nearby points; when it detects sharp differences between locations, it signals wind shear. Microbursts—the strong, localized downdrafts near the surface—create exactly those abrupt wind changes, so they show up as wind-shear activity in LLWAS data. So this system is designed to detect wind shear, including microburst activity, rather than general turbulence or only microbursts without the broader wind-shear context.

The main idea is spotting hazardous changes in the low-level wind that can affect aircraft on approach or departure. LLWAS uses a network of ground sensors to monitor wind speed and direction at multiple nearby points; when it detects sharp differences between locations, it signals wind shear. Microbursts—the strong, localized downdrafts near the surface—create exactly those abrupt wind changes, so they show up as wind-shear activity in LLWAS data. So this system is designed to detect wind shear, including microburst activity, rather than general turbulence or only microbursts without the broader wind-shear context.

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