R Code used to calculate/extract marine environmental variables (mixed layer depth and sea ice concentration) as described in "Depth habitat of the planktonic foraminifera Neogloboquadrina pachyderma in the northern high latitudes explained by sea-ice and chlorophyll concentration" Mattia Greco, Lukas Jonkers, Kerstin Kretschmer, Jelle Bijma and Michal Kucera, Biogeosciences Discuss., https://doi.org/10.5194/bg-2019-79

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CODE:

mixed_layer.R: determines mixed layer depth from a CTD station given water depth and corresponding sigma-theta profile

Seaicetiff.R: downlads sea ice daily concentrations geotiff images from NOAA database