What is it about?
Eastward-Propagating Disturbances (e.g., Kelvin waves) are synoptic time scales features that propagate within the intertropical convergence zone (ITCZ). This study distinguishes between two types of Eastward-Propagating Disturbances during DJF and MAM that have different physical characteristics, forcing mechanisms, and regional impacts.
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Why is it important?
Kelvin waves propagate eastward at around 12–15 m/s, but a particular phase speed itself is not proof that an Eastward-Propagating Disturbances is a Kelvin wave. This study identified two types of Eastward-Propagating Disturbances in the tropical Pacific. Additionally, the relationship between Eastward-Propagating Disturbances (e.g., Kelvin waves) and northern hemisphere extratropical Rossby waves in the tropical Pacific remains understudied for boreal winter and is virtually unstudied for boreal spring.
Perspectives
Writing this article is the result of 2 years of intense research and discussions with the co-authors and other scientists. I hope you find this article useful in your interest in tropical meteorology.
Miss Lidia Huaman
Texas A&M University
Read the Original
This page is a summary of: Eastward-Propagating Disturbances in the Tropical Pacific, Monthly Weather Review, August 2020, American Meteorological Society,
DOI: 10.1175/mwr-d-20-0029.1.
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