Subsidence and ascent of air as determined by means of the wet-bulb potential temperature

✍ Scribed by Richmond W. Longley

• Publisher: John Wiley and Sons
• Year: 1942
• Tongue: English
• Weight: 796 KB
• Volume: 68
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.49706829704

✦ Synopsis

Abstract

This paper contains:—

A description of the use of the wet‐bulb potential temperature for determining changes in level of air in situations when all levels of the original air column have not the same trajectory;

A derivation of the amount of subsidence which takes place in air moving off the ridge of a high, amounting at times to 1.7 km. in 24 hours from the 3 km. level, and a demonstration of the subsidence of an inversion in the centre of a high of 300 m. in 24 hours;

A demonstration of the overrunning and uplift of a stream of warm air over another stream of colder air;

Some remarks on the divergence of the subsiding air as it moves off the high pressure region;

A discussion of the changes in moisture content which took place in the masses of air considered.