On the summer hemisphere Hadley cell

✍ Scribed by L. L. Schulman

• Book ID: 104574316
• Publisher: John Wiley and Sons
• Year: 1973
• Tongue: English
• Weight: 277 KB
• Volume: 99
• Category: Article
• ISSN: 0035-9009
• DOI: 10.1002/qj.49709941916

✦ Synopsis

Abstract

In the extreme seasons the winter hemisphere Hadley cell dominates the entire zonally averaged mean meridional circulation by extending well into the summer hemisphere, and the summer hemisphere Hadley cell practically disappears. The hypothesis that this apparent disappearance is due to the process of zonal averaging, and that a summer hemisphere Hadley cell does exist when the averaging is restricted to the longitudes not occupied by the Asiatic monsoon, is tested. Using data for 1957–1964 covering the months June‐August, it is found that the summer hemisphere Hadley cell was indeed present over the longitudes 160°E‐0–30°E, or two thirds of the Tropics. It is argued that some of the most interesting features of the meridional circulation and their associated transport processes are obscured by the zonal averaging process.