Session: Benchmarking & cross-cutting Group 1 (Isotope modelling, COMPARE)
Author: Fabrice Lambert / email@example.com / Catholic University of Chile
Mineral dust aerosols in the atmosphere are thought to impact on Earth’s climate system directly by absorbing and scattering electromagnetic radiation, and indirectly by acting as cloud nuclei and by influencing biogeochemical cycles through micronutrient fertilization of the biosphere. Although great progress has been made in recent years in the modeling of dust mobilization, transport, and deposition, simulated atmospheric dust concentrations still feature large uncertainties and a wide model to model spread in simulation results. Here, I present a 3-d map of reconstructed atmospheric dust concentrations created by combining Holocene and LGM interpolated global dust flux fields based on observations with ensemble deposition variables from model simulations. Although not completely independent from model simulations, this observational/model hybrid still allows an assessment of individual model performance.