Measurements of isoprene and six monoterpenes (alpha- and beta-pinene, myrcene, delta3-carene, ocimene and limonene) were made during research cruises in the Atlantic Ocean and Arctic (80 degrees N – 50 degrees S). The trace gas species were quantified in the surface ocean, in depth profiles and in the marine boundary layer (MBL).

Atmospheric mixing ratios of the analytes were typically below the detection limit (DL) to a few pptv over the Atlantic and mostly