Single layer model based on Sobel and Schneider 2009 and 2013.
Sobel, A. H., and Schneider, T. (2009), Single-layer axisymmetric model for a Hadley circulation with parameterized eddy momentum forcing, J. Adv. Model. Earth Syst., 1, 10, doi:10.3894/JAMES.2009.1.10.
Sobel, A. H., and Schneider, T. (2013), Correction to “Single-layer axisymmetric model for a Hadley circulation with parameterized eddy momentum forcing”, J. Adv. Model. Earth Syst., 5, 654– 657, doi:10.1002/jame.20030.