Statistical Challenges in Maintaining Remote Sensing Earth System Data Records Jonathan Hobbs, Jet Propulsion Laboratory, California Institute of Technology; Amy Braverman, Jet Propulsion Laboratory, California Institute of Technology; Eric Fetzer, Jet Propulsion Laboratory, California Institute of Technology; Michael Gunson, Jet Propulsion Laboratory, California Institute of Technology; Hai Nguyen, Jet Propulsion Laboratory, California Institute of Technology; Otto Lamminpää, Jet Propulsion Laboratory, California Institute of Technology; Joaquim Teixeira, Jet Propulsion Laboratory, California Institute of Technology