Our estimate is based primarily
on our review of a
series of calculations with three - dimensional models of the global
atmospheric circulation, which is summarized in Chapter 4.
Unresolved issues that will be addressed in a
series of forthcoming studies include the effects of ocean dynamics
on the predictability of low - frequency atmosphere and land variability and the feedback of soil moisture variations
on atmospheric temperatures and
circulation (e.g., Rowntree and Bolton 1983; Atlas et al. 1993; Koster et al. 2000).