Climatology of aerosol properties at an atmospheric monitoring site on the northern California coast

Boedicker, Erin K.; Andrews, Elisabeth; Sheridan, Patrick J.; Quinn, Patricia K.

doi:10.5194/acp-23-9525-2023

Title: Climatology of aerosol properties at an atmospheric monitoring site on the northern California coast

Journal Article · 29 August 2023 · Atmospheric Chemistry and Physics (Online)

DOI: https://doi.org/10.5194/acp-23-9525-2023 · OSTI ID:2424888

^[1];

^[1]; Sheridan, Patrick J. ^[2]; Quinn, Patricia K. ^[3]

Univ. of Colorado, Boulder, CO (United States). Cooperative Inst. for Research in Environmental Sciences (CIRES); National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States). Global Monitoring Laboratory
National Oceanic and Atmospheric Administration (NOAA), Boulder, CO (United States). Global Monitoring Laboratory
National Oceanic and Atmospheric Administration (NOAA), Seattle, WA (United States). Pacific Marine Environmental Lab. (PMEL)

Between April 2002 and June 2017, the Global Monitoring Laboratory (GML) of the National Oceanic and Atmospheric Administration (NOAA) made continuous measurements of a suite of in situ aerosol optical properties at a long-term monitoring site near Trinidad Head (THD), California. In addition to aerosol optical properties, between 2002–2006 a scanning humidograph system was operated, and inorganic ion and total aerosol mass concentrations were obtained from filter measurements. A combined analysis of these datasets demonstrates consistent patterns in aerosol climatology and highlights changes in sources throughout the year. THD is predictably dominated by sea salt aerosols; however, marine biogenic aerosols are the largest contributor to PM1 in the warmer months. Additionally, a persistent combustion source appears in the winter, likely a result of wintertime home heating. While the influences of local anthropogenic sources from vehicular and marine traffic are visible in the optical aerosol data, their influence is largely dictated by the wind direction at the site. Comparison of the THD aerosol climatology to that reported for other marine sites shows that the location is representative of clean marine measurements, even with the periodic influence of anthropogenic sources.

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Research Organization:: Univ. of Colorado, Boulder, CO (United States)

Sponsoring Organization:: National Oceanic and Atmospheric Administration (NOAA); USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI ID:: 2424888

Journal Information:: Atmospheric Chemistry and Physics (Online), Journal Name: Atmospheric Chemistry and Physics (Online) Journal Issue: 16 Vol. 23; ISSN 1680-7324

Publisher:: Copernicus Publications, EGUCopyright Statement

Country of Publication:: United States

Language:: English

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