Lo. Jay et al., IMPROVED QUASI-STEADY-STATE-APPROXIMATION METHODS FOR ATMOSPHERIC CHEMISTRY INTEGRATION, SIAM journal on scientific computing, 18(1), 1997, pp. 182-202
In the last fifteen years the quasi-steady-state-approximation (QSSA)
method has been a commonly used method for integrating stiff ordinary
differential equations arising from atmospheric chemistry problems. In
this paper a theoretical analysis of the QSSA method is developed, st
ressing its strengths and its weaknesses. This theory leads to practic
al improvements to the QSSA method. New algorithms, including symmetri
c and extrapolated QSSA are presented.