Triple Collocation Analysis of Soil Moisture From Metop-A ASCAT and SMOS Against JRA-55 and ERA-Interim. - Kengo Miyaoka; Alexander Gruber; Francesca Ticconi; Sebastian Hahn 002; Wolfgang Wagner 001; Julia Figa-Saldana; Craig Anderson 002 (IEEE J. Sel. Top. Appl. Earth Obs. Remote. Sens., 2017)