FN Archimer Export Format
PT J
TI Variability of alkalinity and the alkalinity-salinity relationship in the tropical and subtropical surface ocean
BT 
AF JIANG, Zong-Pei
   TYRRELL, Toby
   HYDES, David J.
   DAI, Minhan
   HARTMAN, Susan E.
AS 1:1,2;2:1;3:1;4:3;5:1;
FF 1:;2:;3:;4:;5:;
C1 Univ Southampton, Natl Oceanog Ctr, Southampton, Hants, England.
   Zhejiang Univ, Ocean Coll, Hangzhou 310003, Zhejiang, Peoples R China.
   Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen, Peoples R China.
C2 UNIV SOUTHAMPTON, UK
   UNIV ZHEJIANG, CHINA
   UNIV XIAMEN, CHINA
IF 3.965
TC 60
UR https://archimer.ifremer.fr/doc/00292/40349/38934.pdf
   https://archimer.ifremer.fr/doc/00292/40349/38935.docx
   https://archimer.ifremer.fr/doc/00292/40349/38936.tif
   https://archimer.ifremer.fr/doc/00292/40349/38937.tif
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
AB The variability of total alkalinity (TA) and its relationship with salinity in the tropical and subtropical surface ocean were examined using data collected in various marine environments from a ship of opportunity. In the open ocean regions of the Atlantic, Pacific, and Indian Oceans, sea surface TA variability was observed to be mainly controlled by the simple dilution or concentration (SDC) effect of precipitation and evaporation, and the measured concentrations of TA agreed well with those predicted from salinity and temperature. Non-SDC changes in alkalinity in ocean margins and inland seas were examined by comparing the salinity-normalized alkalinity with that of the open ocean end-member. Non-SDC alkalinity additions to the western North Atlantic margin, eastern North Pacific margin, and Mediterranean Sea were identified, which mainly resulted from river inputs and shelf currents. In contrast, removal of TA through formation and sedimentation of calcium carbonate was observed to be an important control in the Red Sea. The concentration of the river end-member can only be reliably derived from the y intercept of TA-S regression (TA(S0)) in river-dominated systems such as estuaries and river plumes. In coastal regions where other processes (evaporation, shelf currents, upwelling, calcification, etc.) are more influential, TAS0 can significantly deviate from the river water concentration and hence be an unreliable indicator of it. Negative values of TAS0 can result from non-SDC TA removal at the low salinity end (relative to the salinity of the oceanic end-member) and/or non-SDC TA addition at high salinities (as occurs in the Mediterranean Sea).
PY 2014
PD JUN
SO Global Biogeochemical Cycles
SN 0886-6236
PU Amer Geophysical Union
VL 28
IS 7
UT 000340609800007
BP 729
EP 742
DI 10.1002/2013GB004678
ID 40349
ER

EF