Comparison of the long-term trends in stratospheric dynamics  of  four reanalyses

Kozubek, Michal; Krizan, Peter; Lastovicka, Jan

doi:https://doi.org/10.5194/angeo-35-279-2017

Articles | Volume 35, issue 2

https://doi.org/10.5194/angeo-35-279-2017

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

https://doi.org/10.5194/angeo-35-279-2017

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

Articles | Volume 35, issue 2

Regular paper

|

27 Feb 2017

Regular paper |

| 27 Feb 2017

Comparison of the long-term trends in stratospheric dynamics of four reanalyses

Michal Kozubek, Peter Krizan, and Jan Lastovicka

Data sets

The MERRA-Land Data Product, version 1.1. GMAO Technical Report R. H. Reichle http://disc.sci.gsfc.nasa.gov

The ERA-Interim reanalysis: configuration and performance of the data assimilation system (http://data-portal.ecmwf.int) D. P. Dee, S. M. Uppala, A. J. Simmons, et al. https://doi.org/10.1002/qj.828

NCEP-DOE AMIP-II Reanalysis (R-2) (http://www.esrl.noaa.gov/psd) M. Kanamitsu, W. Ebisuzaki, J. Woollen, S.-K. Yang, J. J. Hnilo, M. Fiorino, and G. L. Potter https://doi.org/10.1175/BAMS-83-11-1631

The JRA-55 Reanalysis: General Specifications and Basic Characteristics (http://rda.ucar.edu/datasets/ds628.0/#!) S. Kobayashi, Y. Ota, Y. Harada, A. Ebita, M. Moriya, H. Onoda, K. Onogi, H. Kamahori, C. Kobayashi, H. Endo, K. Miyaoka, and K. Takahashi https://doi.org/10.2151/jmsj.2015-001

SSW H. S. Muench and T. R. Borden http://www.geo.fu-berlin.de/en/met/ag/strat/produkte/northpole/index.html

The lower arctic stratosphere in winter since 1952 (http://www.geo.fu-berlin.de/en/met/ag/strat/produkte/northpole/index.html) K. Labitzke and B. Naujokat http://www.atmosp.physics.utoronto.ca/SPARC/News15/15_Labitzke.html

Short summary

A study of trends in the middle stratosphere using comparisons of four main reanalyses (ERA-Interim, JRA-55, MERRA and NCEP/NCAR). We identified that all four reanalyses show very similar trends on a season or monthly basis. We also compute trends for each grid point not as a zonal mean. This approach shows detailed features in the trend studies in both hemispheres.