-- Warm air causes more evaporation; air molecules are more active & can hold more moisture High air pressure usually means cooler drier weather. (slideplayer.com)
When birds flap their wings, they're generating an area of high air pressure under the wing and low air pressure above it. (businessinsider.com)
A positive NAO index, which leads to Atlantic depressions following a northerly course over Europe, bringing mild and rainy winters — is accompanied with higher air pressure over southern Europe — and clearly below average precipitation in Spain. (bitsofscience.org)