Barometric error occurs when

1. ✓Sea level pressure (Mean Sea Level) is different from the 1013.25hPaCorrect answer
2. The altimeter was heated (eg. sunshine) to high temperature
3. Pressure gradient is different from QNH
4. Pressure gradient is different from the ISA

Explanation

Barometric error in altimetry arises when the actual atmospheric conditions differ from the International Standard Atmosphere (ISA) used to calibrate the…

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