Fugacity of carbon dioxide (fCO2), temperature, salinity and other variables collected from surface underway observations using shower head equilibrator, carbon dioxide gas detector and other instruments during NOAA Ship Bell M. Shimada cruises SH1906_L1, SH1906_L2, SH1906_L3, SH106_L4, SH1907, and SH1908 (EXPOCODEs 332220190617, 332220190708, 332220190725, 332220190806, 332220190911 and 3322201900921) on the continental shelf of the US West Coast from 2019-06-17 to 2019-09-29 (NCEI Accession 0208685)

This NCEI accession contains surface underway measurements of fugacity of carbon dioxide (fCO2), sea surface salinity, sea surface temperature, and other parameters collected during NOAA Ship Bell M. Shimada cruises SH1906_L1, SH1906_L2, SH1906_L3, SH106_L4, SH1907, and SH1908 (EXPOCODEs 332220190617, 332220190708, 332220190725, 332220190806, 332220190911 and 3322201900921) on the continental shelf of the US West Coast from 2019-06-17 to 2019-09-29. This effort was conducted in support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP).