Annual and semiannual cycles of midlatitude near-surface temperature and tropospheric  baroclinicity: reanalysis data  and AOGCM simulations

Lembo, Valerio; Bordi, Isabella; Speranza, Antonio

doi:https://doi.org/10.5194/esd-8-295-2017

Articles | Volume 8, issue 2

https://doi.org/10.5194/esd-8-295-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/esd-8-295-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 8, issue 2

Research article

|

20 Apr 2017

Research article |

| 20 Apr 2017

Annual and semiannual cycles of midlatitude near-surface temperature and tropospheric baroclinicity: reanalysis data and AOGCM simulations

Valerio Lembo, Isabella Bordi, and Antonio Speranza

Data sets

ERA-Interim global atmospheric reanalysis ECMWF http://apps.ecmwf.int/

ERA-20CM twentieth century atmospheric model ensemble ECMWF http://apps.ecmwf.int/

CMIP5, Climate Model Intercomparison Project, phase 5, WCRP https://esgf-data.dkrz.de/search/esgf-dkrz/

Short summary

The study wishes to better characterize the annual and semiannual cycles of surface temperature and baroclinicity at midlatitudes as observed in ERA-Interim reanalysis data and AOGCM simulations. Results show that at the semiannual frequency model phases between surface temperature and baroclinicity have wide dispersion in both hemispheres with large errors in the estimates, denoting uncertainty and a degree of disagreement among models.