GMIMS: The Global Magneto-Ionic Medium Survey
  The Global Magneto-Ionic Medium Survey (GMIMS) is a project to map the diffuse polarized emission over the entire sky, Northern and Southern hemispheres, from 300 MHz to 1.8 GHz. With an angular resolution of 30 - 60 arcmin and a frequency resolution of 1 MHz or better, GMIMS will provide the first spectro-polarimetric data set of the large-scale polarized emission over the entire sky, observed with single-dish telescopes. GMIMS will provide an invaluable resource for studies of the magneto-ionic medium of the Galaxy in the local disk, halo, and its transition. 
M. Wolleben, T. L. Landecker, E. Carretti, J. M. Dickey, A. Fletcher,   B. M. Gaensler, J. L. Han, M. Haverkorn, J. P. Leahy...