What does QNH stand for?

What does QNH mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: QNH.

We've found 9 definitions for QNH:Sort:PopularA - ZCategory

QNH

Qatar National Hotels Company

Business » Firms

   
QNH

Your net frequency is High.

Computing » Networking

   
QNH

Quasi Non-Hydrostatic

Academic & Science » Physics

   
QNH

Qatar National Hotels

Miscellaneous » Unclassified

   
QNH

Quasi Non Hydrostatic

Miscellaneous » Unclassified

   
QNH

What should I set on the sub-scale of my altimeter so that the instrument would indicate my elevation if I were on the ground at your station?

Governmental » Transportation

   
QNH

NOAA Quasi- Non Hydrostatic Model

Academic & Science » Meteorology

   
QNH

NOAA Quasi- Non Hydrostatic Model

Academic & Science » Ocean Science

   
QNH

Quality Natural Health

Miscellaneous » Unclassified

   

What does QNH mean?

QNH
QNH is one of the many Q codes. It is defined as, "barometric pressure adjusted to sea level." It is a pressure setting used by pilots, air traffic control, and low frequency weather beacons to refer to the barometric setting which, when set on an aircraft's altimeter, will cause the altimeter to read altitude above mean sea level within a certain defined region. Within United Kingdom airspace, these are known as Altimeter Setting Regions; these regions may be large areas, or apply only to the airfield for which the QNH was given. An airfield QNH will cause the altimeter to show airfield altitude, that is, the altitude of the centre point of the main runway above sea level on landing, irrespective of the temperature. In the United Kingdom the lowest forecast value of QNH for an altimeter setting region is called the "Regional Pressure Setting" and may be used to ensure safe terrain separation when cruising at lower altitudes. In some parts of the world a similar procedure is adopted and this is known as "Regional QNH" however this name has been modified to the above in the UK to avoid ambiguity.

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