The UKMO HADAM2 model part of the line of Unified Models (UM) intended
to provide a common framework for forecasting and climate applications
(cf. Cullen 1993 ). The dynamical formulations are those described by
Bell and Dickinson (1987); the physical parameterizations are
substantially modified from those of an earlier UKMO model documented
by Slingo (1985) .
There is a Climate Research ... Technical Note by Tim Johns (1996), number
71 which describes the UKMO HADAM2 model in detail.
The differences between HADAM2b and HADAM2 are briefly described in
the Hewitt and Mitchell (1997) paper.
The UKMO HADAM2b model is a coupled atmosphere-mixed layer ocean
For fixed experiments, the model is designated as:
UKMO HADAM2 (2.5x3.75 L19) 1997 or UKMO - Unified Model vn3.2 AGCM -
for computed experiments, the model is designated as:
UKMO HADAM2b (2.5x3.75 L19) 1997 or UKMO - Unified Model vn3.4 Slab
GCM - 2x4L19
For the PMIP, UKMO consists of runs 21, 6 and 0.