FN Archimer Export Format PT J TI Decreased calcification in the Southern Ocean over the satellite record BT AF FREEMAN, Natalie M. LOVENDUSKI, Nicole S. AS 1:1,2;2:1,2; FF 1:;2:; C1 Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA. Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA. C2 UNIV COLORADO, USA UNIV COLORADO, USA IF 4.212 TC 28 UR https://archimer.ifremer.fr/doc/00292/40371/38941.pdf https://archimer.ifremer.fr/doc/00292/40371/38942.pdf https://archimer.ifremer.fr/doc/00292/40371/38943.pdf LA English DT Article CR OISO 8 OISO1 OISO2 OISO3-NIVMER98 OISO4 (VT 46) OISO5 (VT 49) VT 105 / OISO 17 VT 108 / OISO-18 VT 114 / OISO-19 VT 117 / OISO-20 VT 120 / OISO-21 VT 127 / OISO-22 VT 136 / OISO-23 VT 51 / OISO 6 VT 57 / OISO 9 VT 60 / CARAUS - OISO 10 VT 62 / CARAUS - OISO 11 VT 79 / OISO 12 VT 80 / OISO 13 VT 81 / OISO 14 VT 85 / OISO 15 VT 94 / OISO 16 BO Marion Dufresne DE ;Southern Ocean;calcification;particulate inorganic carbon;carbonate ion;Antarctic polar front AB Widespread ocean acidification is occurring as the ocean absorbs anthropogenic carbon dioxide from the atmosphere, threatening marine ecosystems, particularly the calcifying plankton that provide the base of the marine food chain and play a key role within the global carbon cycle. We use satellite estimates of particulate inorganic carbon (PIC), surface chlorophyll, and sea surface temperature to provide a first estimate of changing calcification rates throughout the Southern Ocean. From 1998 to 2014 we observe a 4% basin-wide reduction in summer calcification, with approximate to 9% reductions in large regions (approximate to 1 x 10(6) km(2)) of the Pacific and Indian sectors. Southern Ocean trends are spatially heterogeneous and primarily driven by changes in PIC concentration (suspended calcite), which has declined by approximate to 24% in these regions. The observed decline in Southern Ocean calcification and PIC is suggestive of large-scale changes in the carbon cycle and provides insight into organism vulnerability in a changing environment. PY 2015 PD MAR SO Geophysical Research Letters SN 0094-8276 PU Amer Geophysical Union VL 42 IS 6 UT 000353170000028 BP 1834 EP 1840 DI 10.1002/2014GL062769 ID 40371 ER EF