TY - GEN AU - D.A. Randall BT - ECMWF Technical Memoranda CY - Shinfield Park, Reading DA - 06/1985 DO - 10.21957/45d47wdak LA - eng M1 - 103 PB - ECMWF PP - Shinfield Park, Reading PY - 1985 EP - 12 T2 - ECMWF Technical Memoranda TI - Practical considerations concerning the use of the planetary boundary layer top as acoordinate surface UR - https://www.ecmwf.int/node/11821 ER -