Publications

Retrieval of Aerosol Optical Properties via an All-Sky Imager and Machine Learning: Uncertainty in Direct Normal Irradiance Estimations

Logothetis, Stavros-Andreas; Giannaklis, Christos-Panagiotis; Salamalikis, Vasileios; Tzoumanikas, Panagiotis; Raptis, Panagiotis-Ioannis; Amiridis, Vassilis; Eleftheratos, Kostas; Kazantzidis, Andreas

Quality-assured aerosol optical properties (AOP) with high spatiotemporal resolution are vital for the accurate estimation of direct aerosol radiative forcing and solar irradiance under clear skies. In this study, the sky information from an all-sky imager (ASI) is used with machine learning (ML) synergy to estimate aerosol optical depth (AOD) and the Ångström Exponent (AE). The retrieved AODs (AE) revealed good accuracy, with a dispersion error lower than 0.07 (0.15). The retrieved ML AOPs are used to estimate the DNI by applying radiative transfer modeling. The estimated ML DNI calculations revealed adequate accuracy to reproduce reference measurements with relatively low uncertainties.

Resuspension of microplastic particles from arid regions and global impacts on atmospheric concentrations and deposition

Evangelou, Ioanna; Tatsii, Daria; Bucci, Silvia; Zwaaftink, Christine Groot; Stohl, Andreas

Results of the first-ever ACSM intercomparison study from the ACTRIS-ACSM network. NILU F

Crenn, V.; Sciare, J.; Favez, O.; Croteau, P.L.; Fröhlich, R.; Setyan, A.; Verlhac, S.; Riffault, V.; Äijälä, M.; Bressi, M.; Carbone, C.; Cavalli, F.; Coz, E.; Cubison, M.J.; Gietl, J.K.; Heikkinen, L.; Lunder, C.; Minguillón, M.C.; Ovadnevaite, J.; Petralia, E.; Poulain, L.; Priestman, M.; Ripoll, A.,. Artíñano, B.; Baisnée, D.; Bonnaire, N.; Canagaratna, M.; Green, D.C.; Mocnik, G.; Gros, V.; Petit, J.E.; Sarda-Estève, R.; Jayne, J.T.; Prévôt, A.S.H.

Results from the Swedish screening programme 2007. Subreport 1: Amines. IVL Report, B1817

Woldegiorgis, A.; Wiklund, P.; Remberger, M.; Kaj, L.; Viktor, T.; Lilja, K.; Brorström-Lundén, E.; Dye, C.

Results from the Swedish screening programme 2006. Subreport 3: Zinc pyrithone and irgarol 1051. IVL Report B1764

Woldegeorgis, A.; Remberger, M.; Kaj, L.; Green, J.; Ekheden, Y.; Cousins, A.P.; Brorström-Lundén, E.; Dye, C.; Aspmo, K.; Vadset, M.; Schlabach, M.; Langford, K.

Results from the Swedish national screening programme 2008. Subreport 4: Screening of unintentionally produced organic contaminants. IVL Report B1944

Brorström-Lundén, E.; Remberger, M.; Kaj, L.; Hansson, K.; Palm-Cousins, A.; Andersson, H.; Haglund, P.; Ghebremeskel, M.; Schlabach, M.

Results from the Swedish National Screening Programme 2005. Subreport 1: Antibiotics, anti-inflammatory substances and hormones. IVL Report B1689

Andersson, J.; Woldegiorgis, A.; Remberger, M.; Kaj, L.; Ekheden, Y.; Dusan, B.; Svenson, A.; Brorström-Lundén, E.; Dye, C.; Schlabach, M.

Results from the joint Nordic and the Norwegian non-target screening studies.

Schlabach, M.; Rostkowski, P.; Reid, M.; van Bavel, B.; Thomas, K.; Bæk, K.; Haglund, P.; Venaas, C.

Results from EMEP/COLOSSAL/ACRTIS intensive measurement campaign

Platt, Stephen Matthew; Yttri, Karl Espen; Aas, Wenche

Results from comparing the PM2.5 micro-station with the European reference method in Bucharest.

Marsteen, L.

Results from a new multichannel, moderate bandwidth filter instruments for UV and visible irradiance measurements. Poster presentation. NILU F

Høiskar, B.A.K.; Kylling, A.; Edvardsen, K.; Dahlback, A.; Blumthaler, M.; Danielsen, T.; Haugen, R.

Results from a 2-months rehearsal campaign as part of the preparation activities for the validation of the upcoming EarthCARE mission

Baars, Holger; Marinou, Eleni; Mona, Lucia; O’Connor, Ewan; Rusli, Stephanie; Koopman, Rob; Fjæraa, Ann Mari; Nicolae, Doina

Response of Total Column Ozone at High Latitudes to Sudden Stratospheric Warmings

Hocke, Klemens; Sauvageat, Eric; Bernet, Leonie

The total column ozone (TCO) at northern high latitudes is increased over a course of 1–2 months after a major sudden stratospheric warming as a consequence of enhanced ozone eddy transport and diffusive ozone fluxes. We analyzed ground-based measurements of TCO from Oslo, Andøya and Ny Ålesund from 2000 to 2020. During this time interval, 15 major sudden stratospheric warmings (SSWs) occurred. The observed TCO variations are in a good agreement with those of ECMWF Reanalysis v5 (ERA5), showing that TCO from ERA5 is reliable, even during dynamically active periods. ERA5 has the advantage that it has no data gaps during the polar night. We found that TCO was increased by up to 190 DU after the SSW of February 2010, over one month. The composite analysis of the 15 SSWs provided the result that TCO is increased on average by about 50 DU over one month after the central date of the SSW.

MDPI