An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before
sharing sensitive information, make sure you’re on a federal
government site.
The site is secure.
The https:// ensures that you are connecting to the
official website and that any information you provide is encrypted
and transmitted securely.
Herkert NJ , Spak SN , Smith A , Schuster JK , Harner T , Martinez A , Hornbuckle KC .Herkert NJ , et al. Among authors: spak sn.Environ Sci Process Impacts. 2018 Jan 24;20(1):210-219. doi: 10.1039/c7em00360a.Environ Sci Process Impacts. 2018.PMID: 29094747Free PMC article.
Martinez A, Spak SN, Petrich NT, Hu D, Carmichael GR, Hornbuckle KC.Martinez A, et al. Among authors: spak sn.Atmos Environ (1994). 2015 Dec 1;122:791-798. doi: 10.1016/j.atmosenv.2015.10.040.Atmos Environ (1994). 2015.PMID: 26594127Free PMC article.