ABSTRACT

This practice aims to help the reader understand the convergence and efficiency of semi-analytic spin-up (SASU) for different carbon cycle representations in a model. By conducting the spin-up of the TECO model using native dynamics (ND) and the SASU method, we explore the convergence of different spin-up approaches, and the spin-up efficiency under different carbon input and soil turnover rates. We will also look at a weak nonlinear parameterization that assumes carbon input and soil turnover rates are functions of carbon pool sizes, verifying whether the two approaches converge and comparing their spin-up efficiencies.