TY - GEN AU - Peter Lean AU - Massimo Bonavita AU - Elias Hólm AU - Niels Bormann AU - Tony McNally BT - ECMWF Newsletter DA - 01/2019 DO - 10.21957/9pl5fc37it IS - 158 LA - eng PY - 2019 SE - Meteorology SP - 21 EP - 26 T2 - ECMWF Newsletter TI - Continuous data assimilation for the IFS UR - https://www.ecmwf.int/node/18882 ER -