2024-03-29T15:41:06Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/199102016-08-17T08:13:11Zcom_10261_47com_10261_8col_10261_300
http://hdl.handle.net/10261/19910
10.1029/2008JC005183
17710
Using altimetry to help explain patchy changes in hydrographic carbon measurements
Wiley-Blackwell
2009
artículo
Rodgers, Keith B.
Pérez, Fiz F.
rp01001
Ríos, Aida F.
Modelling
Climate
Carbon
2009
20 páginas, 1 apéndice, 10 figuras.-- Keith B. Rodgers ... et al.
Here we use observations and ocean models to identify mechanisms driving large
11 seasonal to interannual variations in dissolved inorganic carbon (DIC) and dissolved
12 oxygen (O2) in the upper ocean. We begin with observations linking variations in upper
13 ocean DIC and O2 inventories with changes in the physical state of the ocean. Models are
14 subsequently used to address the extent to which the relationships derived from
15 short-timescale (6 months to 2 years) repeat measurements are representative of variations
16 over larger spatial and temporal scales. The main new result is that convergence and
17 divergence (column stretching) attributed to baroclinic Rossby waves can make a
18 first-order contribution to DIC and O2 variability in the upper ocean. This results in a close
19 correspondence between natural variations in DIC and O2 column inventory variations
20 and sea surface height (SSH) variations over much of the ocean. Oceanic Rossby wave
21 activity is an intrinsic part of the natural variability in the climate system and is elevated
22 even in the absence of significant interannual variability in climate mode indices. The
23 close correspondence between SSH and both DIC and O2 column inventories for many
24 regions suggests that SSH changes (inferred from satellite altimetry) may prove useful in
25 reducing uncertainty in separating natural and anthropogenic DIC signals (using
26 measurements from Climate Variability and Predictability’s CO2/Repeat Hydrography
27 program).
openAccess
Journal of Geophysical Research - Part C - Oceans
2009
114
C09013