36
co
o
0...
e
~
Cl
l -
e
o
C")
...I
~
Q)
-0
a
-18 b
-20
-22
-24
-26
-28
-30
Weferetal.
•
• •• 'tIt
•
••• I
· ~ · · ~. -·· .. 1
;.. .. , ." .L.,*, ..
A .. •• ... ,. .. "-.
....... .
.
.. ... ~ ...
.. "
.. , ./f •.
!-:-t. ,..", =-60
-40
-20
o
*
•
20
o
40
o
-32 +--,--.-----r-r--,-----,r--r----t=-"'T"----r-~___I
-80
5 c
-80
S
-60
-40
+
-60
-40
-20
-20
Latitude
o
+
o
20
20
40
40
N
Fig. 20. OIlC N " values of plankton and sinking matter (longer-term sediment trap deployments) (a) and surface
sediments (b) in the Atlantic Ocean. In general, both plankton and sinking-matter O J3 C values are lower by several
per mil compared to sediment O i3 C, in particular at higher latitudes, presumably caused by uptake of anthropogenic
CO 2 in Southern Ocean surface waters. The latitudinal variation of surface water CO 2 availability in the Atlantic
Ocean is also shown (c). From Fischer et al. (1997, 1998).
co
o
0...
e
~
Cl
l -
e
o
C")
...I
~
Q)
-0
a
-18 b
-20
-22
-24
-26
-28
-30
Weferetal.
•
• •• 'tIt
•
••• I
· ~ · · ~. -·· .. 1
;.. .. , ." .L.,*, ..
A .. •• ... ,. .. "-.
....... .
.
.. ... ~ ...
.. "
.. , ./f •.
!-:-t. ,..", =-60
-40
-20
o
*
•
20
o
40
o
-32 +--,--.-----r-r--,-----,r--r----t=-"'T"----r-~___I
-80
5 c
-80
S
-60
-40
+
-60
-40
-20
-20
Latitude
o
+
o
20
20
40
40
N
Fig. 20. OIlC N " values of plankton and sinking matter (longer-term sediment trap deployments) (a) and surface
sediments (b) in the Atlantic Ocean. In general, both plankton and sinking-matter O J3 C values are lower by several
per mil compared to sediment O i3 C, in particular at higher latitudes, presumably caused by uptake of anthropogenic
CO 2 in Southern Ocean surface waters. The latitudinal variation of surface water CO 2 availability in the Atlantic
Ocean is also shown (c). From Fischer et al. (1997, 1998).