"Under high pressure, the air subsides — sinks — toward the surface. This sinking air acts as a dome capping the atmosphere, NOAA said. "This cap helps to trap heat instead of allowing it to lift.

"Under high pressure, the air subsides — sinks — toward the surface. This sinking air acts as a dome capping the atmosphere," NOAA said. "This cap helps to trap heat instead of allowing it to ...

“Under high pressure, the air sinks toward the surface,” NOAA states. “This sinking air acts as a dome capping the atmosphere. This cap helps to trap heat instead of allowing it to lif ...

"Under high pressure, the air subsides — sinks — toward the surface. This sinking air acts as a dome capping the atmosphere, NOAA said. "This cap helps to trap heat instead of allowing it to lift.

creating conditions where the atmosphere acts like a dome or cap, trapping heat over a particular area, according to the National Ocean Service. This causes high temperatures and usually heat ...