CC BY 4.0 UnportedYin, Z.Ansmann, A.Baars, H.Seifert, P.Engelmann, R.Radenz, M.Jimenez, C.Herzog, A.Ohneiser, K.Hanbuch, K.Blarel, L.Goloub, P.Victori, S.Maupin, F.2020-07-132020-07-132019https://oa.tib.eu/renate/handle/123456789/4924https://doi.org/10.34657/3553A shipborne Sun-sky-lunar photometer of type CE318-T was tested during two trans-Atlantic cruises aboard the German research vessel <i>Polarstern</i> from 54<span classCombining double low line"inline-formula">ĝ</span> N to 54<span classCombining double low line"inline-formula">ĝ</span> S in May/June and December 2018. The continuous observations of the motion-stabilized shipborne CE318-T enabled the first-time observation of a full diurnal cycle of aerosol optical depth (AOD) and column-mean Ångström coefficient of a mixed dust-smoke episode. The latitudinal distribution of the AOD from the shipborne CE318-T, Raman lidar and MICROTOPS II shows the same trend with highest values in the dust belt from 0 to 20<span classCombining double low line"inline-formula">ĝ</span> N and overall low values in the Southern Hemisphere. The linear-regression coefficients of determination between MICROTOPS II and the CE318-T were 0.988, 0.987, 0.994 and 0.994 for AODs at 380, 440, 500 and 870 nm and 0.896 for the Ångström exponent at 440-870 nm. The root-mean-squared differences of AOD at 380, 440, 500 and 870 nm were 0.015, 0.013, 0.010 and 0.009, respectively.enghttps://creativecommons.org/licenses/by/4.0/550aerosolDoppler lidarlidaroptical depthphotometerresearch vesselSouthern HemispherespectrophotometryAfrican Margin [Atlantic Ocean]Atlantic OceanArticle