TY - GEN AU - Roberto Buizza BT - ECMWF Technical Memoranda CY - Shinfield Park, Reading DA - 09/1994 DO - 10.21957/nhzb7hae4 LA - eng M1 - 205 PB - ECMWF PP - Shinfield Park, Reading PY - 1994 EP - 42 T2 - ECMWF Technical Memoranda TI - Linearity of optimal perturbation time evolution and sensitivity of ensemble forecasts toperturbation amplitude UR - https://www.ecmwf.int/node/8414 ER -