In this talk I will present results from BAS-FMI-MPI collaboration to examine tropospheric polar temperature variations during years with different levels of geomagnetic activity. I would particularly like to acknowledge the leading roles played in these studies by Annika Seppala, and Andreas Baumgartner. Previous modelling work has suggested that Odd Nitrogen (NOx) produced at high latitudes by energetic particle precipitation can eventually lead to detectable changes in surface air temperatures (SATs). Using the ERA-40 and ECMWF operational surface level air temperature data sets from 1957 to 2006 we find that during winter months, polar SATs in years with high geomagnetic activity are different than in years with low geomagnetic activity; the differences are statistically significant at the 2-sigma level and range up to about +-4.5 K depending on location. The temperature differences are larger when years with wintertime Sudden Stratospheric Warmings (SSW) are excluded than when the SSWs occurrence years are included in the analysis. An attempt to look more closely at the vertical coupling between the high altitude chemical changes and surface temperature variability will be included in the talk.