Effective Radiative Forcing from Aerosols and Reactive Gases: A Multimodel Comparison from AerChemMIP Experiments
Abstract
The effects of aerosols and chemically reactive gases on the radiative balance of the atmosphere has been investigated using the AerChemMIP set of modelling experiments, which are a subset of the 6th Coupled Model Intercomparison Project (CMIP6). The effect of the radiative perturbations for each of the forcing agents can be characterised by calculating the effective radiative forcing (ERF) at the top of atmosphere (TOA) for pre-industrial (PI) to present day (PD) emissions or concentrations. Several models from the CMIP6 project followed the AerChemMIP experimental protocols, allowing for a consistent calculation method for the ERFs for each model. The multi-model spread between the ERFs is examined using a breakdown of the contributions from atmospheric adjustments calculated using radiative kernels. The relative importance of aerosol-cloud interactions and aerosol-radiation interactions for each of the aerosol/gas components is also discussed.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2020
- Bibcode:
- 2020AGUFMGC133..04T
- Keywords:
-
- 3305 Climate change and variability;
- ATMOSPHERIC PROCESSES;
- 3311 Clouds and aerosols;
- ATMOSPHERIC PROCESSES;
- 3339 Ocean/atmosphere interactions;
- ATMOSPHERIC PROCESSES;
- 3359 Radiative processes;
- ATMOSPHERIC PROCESSES