Calendar Event Details

AEROCENTER: Jungbin Mok

Affiliation: University of Maryland
Event Date: Tuesday, January 17, 2017

Location: G133
Time: 11:00 AM

A multi-instrument approach for measuring spectral aerosol absorption and for comparisons with SKYNET

Quantifying the aerosol absorption at UV wavelengths is important for monitoring air pollution using current (e.g., Aura/OMI) and future (e.g., TROPOMI, TEMPO, and GEMS) satellite measurements. Measurements of column atmospheric aerosol absorption (i.e., column effective imaginary refractive index (k), single scattering albedo, (SSA), and aerosol absorption optical depth (AAOD)) are measured from the ground by the NASA AERONET at VIS-NIR wavelengths and in UV-VIS-NIR by the SKYNET networks. With the growing interest in the aerosol composition retrieval, shorter UV (340 and 380 nm) and longer NIR (1627 and 2200 nm) channels were added to the PREDE POM-02 skyradiometer used by SKYNET. Although the SKYNET provides SSA at UV wavelengths, recent comparison studies focus on visible and NIR wavelengths due to the lack of co-incident measurements of aerosol and gaseous absorption properties in the UV. The objective of this study is to compare the SKYNET-retrieved SSA in UV and visible wavelengths with the SSA derived from a combination of AERONET, MFRSR, and Pandora (AMP) retrievals in Seoul, South Korea in spring and summer 2016. The advantage of using combined AMP inversion for the comparison against the independent SKYNET inversion is that it separates aerosol and gaseous (NO₂ and O₃) absorption and retrieves k, AAOD, and SSA from the shortest UVB (305 nm) through visible to NIR wavelengths (1020 nm).

Posted or updated: Tuesday, January 10, 2017

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