The Origin of Temporal Variance in Long-Lived Trace Constituents in the Summer Stratosphere

摘要: Abstract Temporal variances in the concentrations of N2O, CF2Cl2, CFCl3 and CH4 summer stratosphere at a midlatitude location have been measured by Ehhalt others. A simple dynamical model is used to argue that these are created irreversible mixing associated with springtime final stratospheric. warming. Tracer perturbations generated during warming advected passively zonal mean easterlies so tracer variance effectively frozen into summertime stratosphere. Temperature perturbations, on other hand, subject radiative dissipation; temperature relaxes quickly an ambient value.