Changes in stratospheric aerosol extinction coefficient after the 2018 Ambae eruption as seen by OMPS-LP and MAECHAM5-HAM

Abstract. Stratospheric aerosols are an important component of the climate system. They not only change radiative budget Earth but also play essential role in ozone depletion. These impacts particularly noticeable after volcanic eruptions when SO2 injected with eruption reaches stratosphere, oxidizes, and forms stratospheric aerosol. There have been several studies which a plume associated forcing were analyzed using models and/or data from satellite measurements. However, few compared vertically temporally resolved plumes both measured modeled data. In this paper, we changes aerosol loading 2018 Ambae observed by remote sensing measurements simulated global model. We use vertical profiles extinction coefficient at 869 nm retrieved Institute Environmental Physics (IUP) Bremen OMPS-LP (Ozone Mapping Profiling Suite – Limb Profiler) observations. Here, present retrieval algorithm comparison obtained those SAGE III/ISS (Stratospheric Aerosol Gas Experiment III on board International Space Station). The differences within 25 % for most latitude bins, indicates reasonable quality limb product. evolution is investigated monthly mean coefficients 10 d averaged measurement results model output MAECHAM5-HAM (ECHAM short). order to simulate accurately, injection estimates OMPS OMI Monitoring Instrument) first phase TROPOspheric Instrument (TROPOMI) second phase. Generally, agreement between geographical distribution ECHAM quite remarkable, particular, attribute good consistency precise estimation mass height, as well nudging ECMWF ERA5 reanalysis Additionally, (RF) caused increase stratosphere eruption. After accounting uncertainties different RF calculation methods, RFs agree well. estimate tropical (20? N 20? S) be about ?0.13 W m?2.