Using altimetry to help explain patchy changes in hydrographic carbon measurements
| Type | Article | ||||||||
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| Date | 2009-09 | ||||||||
| Language | English | ||||||||
| Author(s) | Rodgers Keith B.1, Key Robert M.1, Gnanadesikan Anand2, Sarmiento Jorge L.1, Aumont Olivier3, 4, Bopp Laurent5, Doney Scott C.6, Dunne John P.2, Glover David M.6, Ishida Akio7, 8, Ishii Masao9, Jacobson Andrew R.10, Lo Monaco Claire3, Maier-Reimer Ernst11, Mercier Herle 4, 16, Metzl Nicolas3, Perez Fiz F.12, Rios Aida F.12, Wanninkhof Rik13, Wetzel Patrick11, Winn Christopher D.14, Yamanaka Yasuhiro15 |
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| Affiliation(s) | 1 : Princeton Univ, AOS Program, Princeton, NJ 08540 USA. 2 : NOAA, GFDL, Princeton, NJ 08540 USA. 3 : Univ Paris 06, IPSL, LOCEAN, F-75252 Paris, France. 4 : CNRS, UBO, IRD, IFREMER,LPO, F-29280 Plouzane, France. 5 : DSM, LSCE, F-91191 Gif Sur Yvette, France. 6 : Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA. 7 : JAMSTEC, FRCGC, Yokohama, Kanagawa, Japan. 8 : JAMSTEC, IORGC, Yokohama, Kanagawa 2360001, Japan. 9 : Mission Res Inc, Tsukuba, Ibaraki 3050052, Japan. 10 : Univ Colorado, CIRES, Boulder, CO 80309 USA. 11 : MPI, D-20146 Hamburg, Germany. 12 : CSIC, E-28006 Madrid, Spain. 13 : NOAA, AOML, Miami, FL 33149 USA. 14 : Hawaii Pacific Univ, Coll Nat & Computat Sci, Kaneohe, HI 96744 USA. 15 : Hokkaido Univ, Grad Sch Environm Earth Sci, Sapporo, Hokkaido 0600810, Japan. |
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| Source | Journal Of Geophysical Research Oceans (0148-0227) (Amer Geophysical Union), 2009-09 , Vol. 114 , P. - | ||||||||
| DOI | 10.1029/2008JC005183 | ||||||||
| WOS© Times Cited | 15 | ||||||||
| Abstract | Here we use observations and ocean models to identify mechanisms driving large seasonal to interannual variations in dissolved inorganic carbon (DIC) and dissolved oxygen (O-2) in the upper ocean. We begin with observations linking variations in upper ocean DIC and O-2 inventories with changes in the physical state of the ocean. Models are subsequently used to address the extent to which the relationships derived from short-timescale (6 months to 2 years) repeat measurements are representative of variations over larger spatial and temporal scales. The main new result is that convergence and divergence (column stretching) attributed to baroclinic Rossby waves can make a first-order contribution to DIC and O-2 variability in the upper ocean. This results in a close correspondence between natural variations in DIC and O-2 column inventory variations and sea surface height (SSII) variations over much of the ocean. Oceanic Rossby wave activity is an intrinsic part of the natural variability in the climate system and is elevated even in the absence of significant interannual variability in climate mode indices. The close correspondence between SSII and both DIC and O-2 column inventories for many regions suggests that SSII changes (inferred from satellite altimetry) may prove useful in reducing uncertainty in separating natural and anthropogenic DIC signals (using measurements from Climate Variability and Predictability's CO2/Repeat Hydrography program). | ||||||||
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