Positive Matrix Factorization of Large Aerosol Mass Spectrometry Datasets Using Error-Weighted Randomized Hierarchical Alternating Least Squares Benjamin Sapper, Daven Henze, Manjula Canagaratna, and Harald Stark EGUsphere EGUsphere-2022-1221 Publication Date: December 20, 2022 https://doi.org/10.5194/egusphere-2022-1221  © Author(s) 2022. This work is distributed under the Creative Commons Attribution 4.0 License. Abstract.  Weighted positive