The phrase "air observation" is correct and usable in written English.
It can be used in contexts related to surveillance, reconnaissance, or monitoring from an aerial perspective.
Example: "The military conducted air observation to gather intelligence on enemy movements."
Alternatives: "aerial surveillance" or "aerial monitoring".
The following year, No. 1 FTS commenced regular courses in signals, photography, air observation, and aircraft maintenance.
Although air observation was not as vital to German operations because of their control of commanding ground, the speed by which reports from air observation could be delivered made it a most valuable form of liaison between the front line and higher commanders.
The timing and location had been selected by Admiral William D. Leahy to provide the Utah with the greatest likelihood of fog and cloud cover in which to hide from air observation.
British air observation on the reverse slope was less effective than in the foreground but and villages were demolished, as were much of the and lines, although many pill boxes survived.
Radio communications provided the means to make air observations immediately available.
A radiosonde launching facility is equipped with the RYOFU MARU and upper air observations over the ocean are conducted.
Surface air observations of total gaseous Hg (TGM) show little variability in general, and data from ship cruises indicate 30% higher concentrations in the northern than in the southern hemisphere.
The gently curved open-air observation deck, cantilevering from the top of the structure, afforded spectators a remarkable view of the Ohio River.
From there, visitors would be able to take escalators to the open-air observation deck on the 69th floor, where they would be greeted with views of Central Park.
In its news release, the station did not mention Bernard McGuirk, the producer whose on-air observation about the Rutgers women's basketball team touched off the racially and sexually tinged exchange that got Mr. Imus fired.
Designed by Italian architect Renzo Piano, the building has 72 habitable floors with a viewing gallery and open-air observation deck on the 72nd floor, at a height of 244.3 metres or 802 feet.
