Modeling Permafrost Response of the Last Glacial Termination: First Results of the VAMPER Model

摘要

This paper introduces the VAMPER model, a 1-D numerical finite-difference permafrost model designed for eventual coupling with an earth system model of intermediate complexity (EMIC). The purpose of such coupling is to examine the relationship between permafrost and climate at millennial timescales with specific focus on possible feedback effects of a changing permafrost regime. First results here include 1) an equilibrium experiment where the VAMPER model simulated the current depth of permafrost at Barrow, Alaska; 2) validation of the VAMPER model by comparing results to two other previously published models; and 3) a deglaciation transient experiment done for Wyoming, USA, forced by surface temperatures from the EMIC LOVECLIM.