A thermal "wall" is created by placing the heaters at a close distance to each other along a perimeter boundary, usually along the uphill side, or the side facing a prevailing cold
air drift. The heat from the heaters will not flow downward into the vineyard--heat only goes up, never down.
As altitude increases, air pressure drops and the gas molecules that make up
air drift apart.
When the hole breaks up during October and November, pockets of ozone-depleted
air drift northward and mix with air over New Zealand and other regions in the southern hemisphere.
If they dropped to sixth, they would have handed victory to the Swiss but with merely a puff behind them, Oman
Air drifted over the line ahead of last placed Land Rover BAR to make certain of earning maximum points for the Hamburg Act, clinching it by a single point.
Cold air comes down the second floor stairs while hot
air drifts up.
A wave of warm
air drifted through the club, and I planned to find him after that song.