Articles | Volume 15, issue 11
https://doi.org/10.5194/gmd-15-4447-2022
https://doi.org/10.5194/gmd-15-4447-2022
Methods for assessment of models
 | 
09 Jun 2022
Methods for assessment of models |  | 09 Jun 2022

A novel method for objective identification of 3-D potential vorticity anomalies

Christoph Fischer, Andreas H. Fink, Elmar Schömer, Roderick van der Linden, Michael Maier-Gerber, Marc Rautenhaus, and Michael Riemer

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Revised manuscript under review for GMD
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Cited articles

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Bennetts, D. A. and Hoskins, B.: Conditional symmetric instability-a possible explanation for frontal rainbands, Q. J. Roy. Meteor. Soc., 105, 945–962, https://doi.org/10.1002/qj.49710544615, 1979. a
Bentley, A., Bosart, L., and Keyser, D.: Upper-Tropospheric Precursors to the Formation of Subtropical Cyclones that Undergo Tropical Transition in the North Atlantic Basin, Mon. Weather Rev., 145, 503–520, https://doi.org/10.1175/MWR-D-16-0263.1, 2017. a
Bithell, M., Gray, L. J., and Cox, B. D.: A Three-Dimensional View of the Evolution of Midlatitude Stratospheric Intrusions, J. Atmos. Sci., 56, 673–688, https://doi.org/10.1175/1520-0469(1999)056<0673:ATDVOT>2.0.CO;2, 1999. a, b, c, d, e, f
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Short summary
Potential vorticity (PV) analysis plays a central role in studying atmospheric dynamics. For example, anomalies in the PV field near the tropopause are linked to extreme weather events. In this study, an objective strategy to identify these anomalies is presented and evaluated. As a novel concept, it can be applied to three-dimensional (3-D) data sets. Supported by 3-D visualizations, we illustrate advantages of this new analysis over existing studies along a case study.