TY - CPAPER AU - R. Gelaro AU - R.H. Langland AU - G.D. Rohaly AU - T.E. Rosmond BT - Workshop on Predictability, 20-22 October 1997 CY - Shinfield Park, Reading DA - 1997 LA - eng PB - ECMWF PP - Shinfield Park, Reading PY - 1997 SP - 153 EP - 184 T2 - Workshop on Predictability, 20-22 October 1997 TI - The use of adjoint methods for adaptive observations ER -