Isentropic zonal average formalism and the near-surface circulation

• Main Authors: Koh, Tieh Yong, Plumb, Alan R.
• Other Authors: Proceedings of the Conference on Atmospheric and Oceanic Fluid Dynamics, American Meteorological Society (14th : 2003)
• Format: Conference or Workshop Item
• Language: English
• Published: 2014
• Subjects: DRNTU::Science::Astronomy
• Online Access: https://hdl.handle.net/10356/79719; http://hdl.handle.net/10220/20355
• Institution: Nanyang Technological University

Hoskins (1991) proposed dividing the atmosphere into 3 regions: Overworld, Middleworld and Underworld, using potential temperature θ and potential vorticity (PV) as reference (Fig. 1). In the Underworld (θ < 300 K), isentropes intercept the Earth’s surface and a direct isentropic zonal aver...