Ujjawal Shah is a recent graduate from Howard University that has published his first scientific article under the mentorship of Dr. Ricardo Sakai from Howard University Beltsville Campus (HUBC). The title of his paper is “Trace Gas Variability and Ozone Formation Regimes in Urban and Sub-urban Landscape over Greater Washington D.C. Area” (https://doi.org/10.1080/27669645.2026.2689861) and it was published under the All Earth journal, Atmosphere section, from the Taylor and Francis Group. This study uses four years (2021–2024) of Pandora spectrometer total column and tropospheric observations at urban (McMillan), sub-urban (Goddard), and sub-rural (Beltsville) sites in the Washington, D.C. region to characterize spatiotemporal variability in nitrogen dioxide (NO₂), formaldehyde (HCHO), sulfur dioxide (SO₂), and ozone (O₃). These findings demonstrate the value of column-integrated observations for diagnosing nonlinear ozone chemistry and validating satellite-based air quality regimes. The whole Howard University community would like to congratulate Ujjawal Shah for this high accomplishment and for the many papers to come.

Ujjawal Shah presenting his research work at a conference.