FN Archimer Export Format
PT J
TI The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink
BT 
AF ABELMANN, Andrea
   GERSONDE, Rainer
   KNORR, Gregor
   ZHANG, Xu
   CHAPLIGIN, Bernhard
   MAIER, Edith
   ESPER, Oliver
   FRIEDRICHSEN, Hans
   LOHMANN, Gerrit
   MEYER, Hanno
   TIEDEMANN, Ralf
AS 1:1;2:1;3:1,2;4:1;5:1;6:1;7:1;8:3;9:1;10:1;11:1;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;
C1 Alfred Wegener Inst Helmholtz Ctr Polar & Marine, D-27568 Bremerhaven, Germany.
   Cardiff Sch Earth & Ocean Sci, Cardiff CF10 3AT, Wales.
   Free Univ Berlin, D-14195 Berlin, Germany.
C2 INST A WEGENER, GERMANY
   CARDIFF SCH EARTH & OCEAN SCI, UK
   FREE UNIV BERLIN, GERMANY
IN DOAJ
IF 11.329
TC 55
UR https://archimer.ifremer.fr/doc/00497/60842/64285.pdf
   https://archimer.ifremer.fr/doc/00497/60842/64286.pdf
   https://archimer.ifremer.fr/doc/00497/60842/64294.pdf
LA English
DT Article
CR VT 90 / SOUC
BO Marion Dufresne
AB Reduced surface-deep ocean exchange and enhanced nutrient consumption by phytoplankton in the Southern Ocean have been linked to lower glacial atmospheric CO2. However, identification of the biological and physical conditions involved and the related processes remains incomplete. Here we specify Southern Ocean surface-subsurface contrasts using a new tool, the combined oxygen and silicon isotope measurement of diatom and radiolarian opal, in combination with numerical simulations. Our data do not indicate a permanent glacial halocline related to melt water from icebergs. Corroborated by numerical simulations, we find that glacial surface stratification was variable and linked to seasonal sea-ice changes. During glacial spring-summer, the mixed layer was relatively shallow, while deeper mixing occurred during fall-winter, allowing for surface-ocean refueling with nutrients from the deep reservoir, which was potentially richer in nutrients than today. This generated specific carbon and opal export regimes turning the glacial seasonal sea-ice zone into a carbon sink. 
PY 2015
PD SEP
SO Nature Communications
SN 2041-1723
PU Nature Publishing Group
VL 6
IS 8136
UT 000362949700003
DI 10.1038/ncomms9136
ID 60842
ER

EF