TY - RPRT TI - Question No. 5: What Role Can Satellites Take, as a Complement to Ground Based Measurement Systems, to Provide Sustained Observations to Monitor GHG Emissions? AU - Chahine, Moustafa AU - Olsen, Edward PY - 2011 UR - https://ntrs.nasa.gov/citations/20120009708 ID - 20120009708 ER -