Publications by Patrick Irwin


Wave Activity in Jupiter's North Equatorial Belt From Near-Infrared Reflectivity Observations

Geophysical Research Letters 46 (2019) 1232-1241

RS Giles, GS Orton, AW Stephens, MH Wong, PGJ Irwin, JA Sinclair, F Tabataba-Vakili

©2019. American Geophysical Union. All Rights Reserved. High spatial resolution images of Jupiter at 1.58–2.28 μm are used to track and characterize a wave pattern observed in 2017 at a planetocentric latitude of 14°N. The wave pattern has a wave number of 18 and spans ∼5° in latitude. One bright crest remains stationary in System III longitude, while the remaining crests move slowly westward. The bright and dark regions of the near-infrared wave pattern are caused by variations in the vertical location of the upper tropospheric haze layer. A comparison with thermal infrared observations shows a correlation with temperature anomalies in the upper troposphere. The results are consistent with a Rossby wave, generated by flow around a stationary vortex.


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