TY - GEN AU - Mohamed Dahoui AU - L. Isaksen AU - Gabor Radnoti BT - ECMWF newsletter C1 - Research DA - 2017 DO - 10.21957/51j3sa IS - 152 LA - eng PY - 2017 SE - Meteorology SP - 27 EP - 31 T2 - ECMWF newsletter TI - Assessing the impact of observations using observation-minus-forecast residuals UR - https://www.ecmwf.int/node/18195 ER -