at a regional airport with an elevation of 56 meters below sea level, the observed station pressure is 1029 mb.

using the equations presented in the activity, mb must be the station pressure to correctly determine the sea level pressure value in mb.

a. 5.6 mb, subtracted from

b. 10.29 mb, subtracted from

c. 10.29 mb, added to

d. 5.6 mb, added to

The answer is: D. 5.6 mb, added a.

Explanation:

Formula for calculating the pressure at sea level, knowing the pressure at the station level

  QNH = 1013.25 [((0.0065 / 288.15) * H) + (QFE / 1013.25) ^ 1 / 5,256] ^ 5,256

 From where:

QNH: Value of the pressure at sea level to be calculated. QNH stands for the atmospheric pressure transmitted in the METAR parts of an airfield.

H: Altitude of the observatory with respect to sea level

QFE: Barometric pressure at station level

The answer is: D. 5.6 mb, added a.