TY - ECHAP AU - ECMWF BT - IFS Documentation CY47R3 DA - 09/2021 LA - eng PB - ECMWF PY - 2021 T2 - IFS Documentation CY47R3 T3 - IFS Documentation TI - IFS Documentation CY47R3 - Part III- Dynamics and Numerical Procedures UR - https://www.ecmwf.int/node/20202 ER -