A synthetic satellite dataset of the spatio-temporal distributions of <i>Emiliania huxleyi</i> blooms and their impacts on Arctic and sub-Arctic marine environments (1998–2016)

Abstract

Abstract. A 19-year (1998–2016) continuous dataset is presented of coccolithophore Emiliania huxleyi distributions and activity, i.e. the release of CaCO3 in water and the decrease of uptake of dissolved CO2 by Emiliania huxleyi cells (e.g. Kondrik et al., 2018a), in Arctic and sub-Arctic seas. The dataset is based on optical remote-sensing data (mostly OC CCI data) with assimilation of different relevant in situ observations, preprocessed with authorial algorithms. Alongside bloom locations, we provide both detailed information on E. huxleyi impacts on carbon balance and the sub-datasets of quantified coccolith concentrations, particulate inorganic carbon content and CO2 partial pressure in water driven by coccolithophores. All data are presented on a regular 4×4 km grid at a temporal resolution of 8 days. The paper describes the theoretical and methodological basis for all processing and modelling steps. The data are available on Zenodo: https://doi.org/10.5281/zenodo.1402033.

Overview: Recent advances on the understanding of the Northern Eurasian environments and of the urban air quality in China - Pan Eurasian Experiment (PEEX) program perspective

“…Notwithstanding the remarkable ability of E. huxleyi to grow under conditions unfavorable for algae of other functional groups (e.g. diatoms, flagellates, cyanobacteria), a highly irregular pattern of the registered twodecadal (1998-present) time series of S, PIC, and pCO2 are indicative of susceptibility of this alga outbursts to environmental conditions (Nissen et al, 2018;Kazakov et al, 2019;Silkin et al, 2019). Statistical prioritization of non-biogenic forcing factors (FFs) shows that the latter are sea-and time-period specific (Pozdnyakov et al, 2019).…”

“…More studies are required even to fully understand the mechanism of intracellular light-dependent reaction of calcification, its dependency on both seawater carbonate chemistry and environmental FFs (Vihma et al, 2019). Creation of respective multidecadal databases (as in Kazakov et al, 2019) as well as further delivery of satellite and in situ/shipborne/laboratory data are necessary to improve our capacity to assess with certainty the climatological and ecological role of E.…”

Disentangling the Effects of Ocean Carbonation and Acidification on Elemental Contents and Macromolecules of the Coccolithophore Emiliania huxleyi

“…Coccolithophores play a central role in the marine carbon cycle and contribute 1–10% to marine organic carbon fixation through photosynthesis ( Poulton et al, 2007 ) and 40–60% of CaCO 3 export to tropical and high-latitude sediments through calcification ( Broecker and Clark, 2009 ). The cosmopolitan coccolithophore Emiliania huxleyi is thought to be the most representative phytoplankton species in modern oceans and can form massive blooms in temperate and sub-polar waters with cell concentrations up to 10×10 7 cells L −1 ( Tyrell and Merico, 2004 ; Kondrik et al, 2019 ; Kubryakova et al, 2021 ). The importance of coccolithophores is well investigated in the field of biogeochemistry due to their effects on the biogeochemical cycling of carbon ( Monteiro et al, 2016 ; Feng et al, 2018 ).…”

Association of Phosphatidylinositol-Specific Phospholipase C with Calcium-Induced Biomineralization in the Coccolithophore Emiliania huxleyi

“…Coccolithophores play an essential role in the global carbon cycle through considerable carbon dioxide fixation and carbon sequestration as they are major producers of marine biogenic calcites and produce large blooms in the open ocean. Emiliania huxleyi ( E. huxleyi ), a calcifying haptophyte, is widespread throughout the oceans worldwide [ 1 , 2 ], including polar [ 3 ] and coastal regions [ 4 ]. Due to their ability to form dense blooms at mid and high latitudes, they are intensively studied to understand the environmental implications of calcification [ 5 , 6 ].…”