Seasonal and interannual variability of coccolithophore blooms in the North East-Atlantic Ocean from a 18-year time-series of satellite water-leaving radiance

Abstract

Abstract. Evaluate the impact of anthropogenic CO 2 uptake and acidification on the most abundant calcareous phytoplankton, coccolithophores, requires a better knowledge of the temporal and spatial evolution of their blooms. Here we 10 determine, from satellite radiance, the seasonal and interannual variability of coccolithophore blooms for 18 years (1998 to

Middle Miocene Temperature and Productivity Evolution at a Northeast Atlantic Shelf Site (IODP U1318, Porcupine Basin): Global and Regional Changes

“…One explanation for such difference between the two lipid-based paleothermometers could be the different growth seasons of the organisms on which the temperature proxies are based. Coccolithophorids, the organisms producing alkenones (SSTUK), usually bloom in spring and summer (April to July) in the North Atlantic (e.g., Perrot et al, 2016), while the Thaumarchaeota (SSTTEX-H) can be abundant all year round, even in winter (Bale et al, 2013;Müller et al, 2018;Pitcher et al, 2011). Alternatively, SSTTEX-H may represent a deeper than surface water signal (e.g., Besseling et al, 2019, Ho andLaepple, 2016).…”