Why gliders appreciate good company: glider assimilation in a 4DVAR system with and without surface observations.

Ivo Pasmans1, Alexander L Kurapov2, John Alexander Barth3, Michael Kosro3 and Robert Kipp Shearman4, (1)Oregon State University, College of Earth, Ocean & Atmospheric Sciences, Corvallis, OR, United States, (2)COAS/Oregon State Univ, Corvallis, OR, United States, (3)Oregon State University, Corvallis, OR, United States, (4)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States