TY - RPRT AU - Michael Rennie AU - J. de Kloe BT - ESA Contract Report C1 - Research DA - 2013 LA - eng M1 - TN15.2 PB - ECMWF PY - 2013 T2 - ESA Contract Report T3 - ESA Contract Report TI - Aeolus observational requirements and the measurement grouping algorithm ER -