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We observed statistically significant year\u2010to\u2010year differences in spatial distribution of spectral absorption (<jats:italic>a<\/jats:italic>(<jats:italic>\u03bb<\/jats:italic>)) and beam attenuation (<jats:italic>c<\/jats:italic>(<jats:italic>\u03bb<\/jats:italic>)). Highest <jats:italic>a<\/jats:italic>(<jats:italic>\u03bb<\/jats:italic>) and <jats:italic>c<\/jats:italic>(<jats:italic>\u03bb<\/jats:italic>) were located in the frontal zone between water masses and co\u2010varied strongly with chlorophyll <jats:italic>a<\/jats:italic> fluorescence. Phytoplankton pigments dominated the absorption budget at 443\u00a0nm (50%). The contribution of chromophoric dissolved organic matter to total nonwater absorption was highest at 412\u00a0nm (42%), and detrital absorption contributed most at 550\u00a0nm (37%). Almost all inherent optical properties, except chromophoric dissolved organic matter, were highly correlated with the chlorophyll <jats:italic>a<\/jats:italic> concentration (<jats:italic>Chla<\/jats:italic>, <jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0&gt;\u00a00.81). Relationships between Chl<jats:italic>a<\/jats:italic> and the particulate and phytoplankton pigments absorption coefficients at 443 and 676\u00a0nm were characterized by significant determination coefficients (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0&gt;\u00a00.73). The phytoplankton pigments line height absorption <jats:italic>a<\/jats:italic><jats:sub>LH<\/jats:sub>(676) was found to be the most reliable optical proxy for determination of Chl<jats:italic>a<\/jats:italic>, compared to total nonwater absorption, <jats:italic>a<\/jats:italic><jats:sub>pg<\/jats:sub>(676), and stimulated in situ chlorophyll <jats:italic>a<\/jats:italic> fluorescence intensity, <jats:italic>I<\/jats:italic><jats:sub>Chl<jats:italic>a<\/jats:italic><\/jats:sub>. In the presence of sea ice melt the water column was stratified and the vertical distribution of inherent optical properties was characterized by a surface minimum followed by a distinct subsurface maximum, aligned with a subsurface chlorophyll <jats:italic>a<\/jats:italic> maximum. We surmise that prevailing regional wind patterns affect sea ice and surface drift in central Fram Strait, and thus the location of sea ice meltwater, which affects the vertical stratification and occurrence of subsurface chlorophyll <jats:italic>a<\/jats:italic> maximum.<\/jats:p>","DOI":"10.1029\/2018jc014529","type":"journal-article","created":{"date-parts":[[2019,2,5]],"date-time":"2019-02-05T14:28:50Z","timestamp":1549376930000},"page":"1964-1987","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":22,"title":["Bio\u2010optical Properties of Surface Waters in the Atlantic Water Inflow Region off Spitsbergen (Arctic Ocean)"],"prefix":"10.1029","volume":"124","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6016-0610","authenticated-orcid":false,"given":"Piotr","family":"Kowalczuk","sequence":"first","affiliation":[{"name":"Institute of Oceanology Polish Academy of Sciences  Sopot 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