theories of atmospheric circulation.pptx

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1. EnSE 6254: Atmospheric Science Assignment 1:Explain theories of atmospheric circulation. Fredrick P. Girenga ( M028/T23) MSc. Environmental Science and Engineering (Engineering)

2. Contents 1. Introduction 2. Theories 3. Conclusion 4.Reference

3. 1. Introduction Atmospheric circulation is the large-scale movement of air within the Earth's atmosphere, driven by the unequal heating of the planet by the Sun. plays a crucial role in redistributing thermal energy and shaping global weather patterns. driven by the uneven heating of the Earth's surface and the Coriolis effect.

4. 2.Atmospheric circulation theories Hardley Cell It describes a closed loop of air circulation near the equator. Warm air rises at the equator, travels poleward, and then sinks back down around 30° north and south latitude . Illustration of hardly cell

5. Cont.. Ferrel cell It located between 30 and 60 degrees latitude in both hemispheres circulate in the opposite direction with Hadley cell . illustration

6. Cont.. Polar cell smallest and weakest of the three main circulation cells, circulating air from the poles down to around 60° north and south latitude. Illustration

7. 3.Conclusion Understanding atmospheric circulation is essential for comprehending weather patterns, climate systems, and the impact of climate change. The three-cell model, while simplistic, provides a foundational framework for explaining large-scale wind patterns and their effects on global climate zones. Help us understand the dynamic nature of Earth's atmosphere and the intricate balance that sustains life on our plan.

8. 4. References Holton, J.R., & Hakim, G.J. (2012). An Introduction to Dynamic Meteorology . Academic Press. Peixoto , J.P., & Oort , A.H. (1992). Physics of Climate . American Institute of Physics. Wallace, J.M., & Hobbs, P.V. (2006). Atmospheric Science: An Introductory Survey . Academic Press. Barry, R.G., & Chorley, R.J. (2009). Atmosphere, Weather and Climate . Routledge. Lutgens , F.K., & Tarbuck , E.J. (2012). The Atmosphere: An Introduction to Meteorology . Pearson. Philander, S.G. (1989). El Niño, La Niña, and the Southern Oscillation . Academic Press. Bjerknes , J. (1969 ) . Atmospheric teleconnections from the equatorial Pacific. Monthly Weather Review, 97 (3), 163-172.