Articles | Volume 1, issue 2
https://doi.org/10.5194/wcd-1-293-2020
https://doi.org/10.5194/wcd-1-293-2020
Research article
 | 
08 Jul 2020
Research article |  | 08 Jul 2020

Atmospheric blocking in an aquaplanet and the impact of orography

Veeshan Narinesingh, James F. Booth, Spencer K. Clark, and Yi Ming

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Cited articles

Abatzoglou, J. T. and Magnusdottir, G.: Planetary Wave Breaking and Nonlinear Reflection, J. Climate, 19, 6139–6152, https://doi.org/10.1175/JCLI3968.1, 2006. 
Barnes, E., Slingo, J., and Woollings, T.: A methodology for the comparison of blocking climatologies across indices, models and climate scenarios, Clim. Dynam., 38, 2467–2481, https://doi.org/10.1007/s00382-011-1243-6, 2012. 
Barriopedro, D., GarcÍa-Herrera, R., Lupo, A. R., and Hernández, E.: A Climatology of Northern Hemisphere Blocking, J. Climate, 19, 1042–1063, https://doi.org/10.1175/JCLI3678.1, 2006. 
Barriopedro, D., García-Herrera, R., and Trigo, R.: Application of blocking diagnosis methods to General Circulation Models. Part I: a novel detection scheme, Clim. Dynam., 35, 1373–1391, https://doi.org/10.1007/s00382-010-0767-5, 2010. 
Berggren, R., Bolin, B., and Rossby, C.-G.: An Aerological Study of Zonal Motion, its Perturbations and Break-down, Tellus, 1, 14–37, https://doi.org/10.3402/tellusa.v1i2.8501, 1949. 
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Short summary
This work investigates the influence of orography on atmospheric blocking dynamics, spatial frequency, and duration. Using an idealized model, a landless integration and integrations with mountains are analyzed. The dynamical evolution of blocking in the idealized model is found to be similar to reanalysis. Orography is found to significantly increase blocking and anchors where blocks most likely occur (i.e., just upstream from mountains and near storm track exits).