Articles | Volume 11, issue 10
Methods for assessment of models
26 Oct 2018
Methods for assessment of models |  | 26 Oct 2018

The TropD software package (v1): standardized methods for calculating tropical-width diagnostics

Ori Adam, Kevin M. Grise, Paul Staten, Isla R. Simpson, Sean M. Davis, Nicholas A. Davis, Darryn W. Waugh, Thomas Birner, and Alison Ming

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Cited articles

Adam, O.: TropD: Tropical width diagnostics software package (Version 1.3), Zenodo,, 2018. a
Adam, O., Schneider, T., and Harnik, N.: Role of changes in mean temperatures versus temperature gradients in the recent widening of the Hadley circulation, J. Climate, 27, 7450–7461, 2014. a
Adam, O., Bischoff, T., and Schneider, T.: Seasonal and interannual variations of the energy flux equator and ITCZ, Part I: Zonally averaged ITCZ position, J. Climate, 29, 3219–3230,, 2016. a
Archer, C. L. and Caldeira, K.: Historical trends in the jet streams, Geophys. Res. Lett., 35, L08803,, 2008. a, b
Birner, T.: Recent widening of the tropical belt from global tropopause statistics: Sensitivities, J. Geophys. Res., 115, D23109,, 2010. a, b, c, d
Short summary
Due to incoherent methodologies, estimates of tropical width variations differ significantly across studies. Here, methods for eight commonly-used metrics of the tropical width are implemented in the Tropical-width Diagnostics (TropD) code package. The method compilation and analysis provide tools and information which help reduce the methodological component of the uncertainty associated with calculations of the tropical width.