Groundbased and balloon-borne measurements in Antarctic regions in support of APE-GAIA

S.R. Colwell , J.D. Shanklin , J.A. Karhu , P. Taalas , M. Gil , M. Yela, S. Rodriguez, C. Rafanelli, H. Cazeneuve, C.A. Villanueva, M. Ginsburg f, S.B. Diaz , R.L. de Zafra , G. Muscari, G. Redaelli, R. Dragani