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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/gmd-2020-149
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gmd-2020-149
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: model description paper 24 Jun 2020

Submitted as: model description paper | 24 Jun 2020

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This preprint is currently under review for the journal GMD.

TITAM (v1.0): Time Independent Tracking Algorithm for Medicanes

Enrique Pravia-Sarabia1, Juan José Gómez-Navarro1, Pedro Jiménez-Guerrero1,2, and Juan Pedro Montávez1 Enrique Pravia-Sarabia et al.
  • 1Physics of the Earth, Regional Campus of International Excellence “Campus Mare Nostrum”, University of Murcia, 30100 Murcia, Spain
  • 2Biomedical Research Institute of Murcia (IMIB-Arrixaca), 30120 Murcia, Spain

Abstract. This work aims at presenting TITAM, a time independent tracking algorithm specifically suited for medicanes. In the last decades, the study of medicanes has been repeatedly addressed given their potential to damage coastal zones. Their hazardous associated meteorological conditions have converted them in a major threat. Even though their similarities with tropical cyclones have been studied in terms of genesis mechanisms and structure, the fact that the former ones appear in baroclinic environments make them prone to temporarily lose their warm-cored and symmetric structure. Thus, the usage of a measure for the warm-core nature of the cyclone, namely the Hart conditions, stands as a key factor for a successful identification of the medicane. Furthermore, given their relatively small spatial extent, medicanes tend to appear embedded in or to coexist with larger lows. Hence, the implementation of a time-independent methodology avoiding the search of a medicane basing on its location at previous time steps seems to be fundamental when facing situations of cyclones coexistence. The examples selected showcase how the algorithm presented throughout this paper is useful and robust for the tracking of medicanes. This methodology satisfies the requirements expected for a tracking method of this nature, namely: the capacity to track multiple simultaneous cyclones, the ability to track a medicane in the presence of an intense trough inside the domain, the potential to separate the medicane from other similar structures handling the intermittent loss of structure, and the capability to isolate and follow the medicane center regardless of other cyclones that could be present in the domain. The complete TITAM package, including pre and post processing tools, is available as a free software extensively documented and prepared for its deployment. As a final remark, this algorithm sheds some light on the medicanes understanding, regarding the medicane structure, the warm-core nature and the existence of tilting.

Enrique Pravia-Sarabia et al.

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Enrique Pravia-Sarabia et al.

Data sets

TITAM (Time Independent Tracking Algorithm for Medicanes) software validation dataset E. Pravia-Sarabia https://doi.org/10.5281/zenodo.3874416

Model code and software

TITAM (Time Independent Tracking Algorithm for Medicanes) software E. Pravia-Sarabia, J. P. Montávez, J. J. Gómez-Navarro, and P. Jiménez-Guerrero https://doi.org/10.5281/zenodo.3874416

Enrique Pravia-Sarabia et al.

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Latest update: 10 Jul 2020
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Short summary
This work shows TITAM, a time independent tracking algorithm specifically suited for Mediterranean tropical-like cyclones, often referred to as Medicanes. The new methodology developed has the capacity to track multiple simultaneous cyclones, the ability to track a Medicane in the presence of intense extratropical lows, the potential to separate the Medicane from other similar structures handling the intermittent loss of structure and managing the tilting of the axis.
This work shows TITAM, a time independent tracking algorithm specifically suited for ...
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