TY - CPAPER AU - R. Saunders BT - Seminar on Data Assimilation, 2-6 September 1996 CY - Shinfield Park, Reading DA - 1996 LA - eng PB - ECMWF PP - Shinfield Park, Reading PY - 1996 SP - 577 EP - 584 T2 - Seminar on Data Assimilation, 2-6 September 1996 TI - How good is the tangent linear approximation for satellite observation operators? ER -