Calendar Event Details
AEROCENTER: Ghassan Taha
Affiliation: GSFC 614 and GESTAR/USRA
Event Date: Tuesday, April 5, 2016
Location: G133
Time: 11:00 AM
OMPS LP aerosol extinction profiles measurements
The Ozone Mapping and Profiler Suite (OMPS) on board Suomi National Polar-orbiting Partnership (S-NPP) was launched on October 28, 2011. It consist of three instruments: Nadir Mapper (NM), Nadir Profiler (NP) and Limb Profiler (LP). The OMPS LP instrument is designed to provide high vertical resolution ozone and aerosol profiles from measurements of the scattered solar radiation in the 290-1000 nm spectral range. It collected its first Earth limb measurement in January 10, 2012, and continues to provide daily global measurements of ozone and aerosol profiles from the cloud top up to 60 km and 40 km respectively.
Although the instrument was designed primarily for vertical ozone profiles measurement, it has a high sensitivity to stratospheric aerosols, cirrus cloud in the upper troposphere, as well as stratospheric (PSC) and mesospheric (PMC) clouds. The relatively high vertical and spatial sampling allow detection and tracking periodic events when aerosol particles are injected into the stratosphere, such as volcanic eruptions or meteor explosions. The current aerosol retrieval algorithm is based on Chahine's non-linear relaxation method, using single wavelength at 675 nm.
In this presentation, we will provide early assessment of OMPS LP aerosol extinction profile measurements by comparing it to OSIRIS on board ODIN. Initial comparison of OMPS version 0.5 aerosol extinction shows agreement with OSIRIS measurements to within 20%. In addition, results showing latitudinal, and temporal variability of stratospheric aerosol extinction and optical depth for both instruments will also be presented.
We will also present OMPS LP aerosol observations of the dispersal of volcanic aerosols in the stratosphere following the eruptions of Kelut and Calbuco in 2014 and 2015 respectively.
Posted or updated: Tuesday, March 29, 2016
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