Data/hora: 08/06/2024 18:18:02

Provedor de dados: 	5	
País: 	France	
Título: 	Using altimetry to help explain patchy changes in hydrographic carbon measurements	
Autores: 	Rodgers, Keith B.; Key, Robert M.; Gnanadesikan, Anand; Sarmiento, Jorge L.; Aumont, Olivier; Bopp, Laurent; Doney, Scott C.; Dunne, John P.; Glover, David M.; Ishida, Akio; Ishii, Masao; Jacobson, Andrew R.; Lo Monaco, Claire; Maier-reimer, Ernst; Mercier, Herle; Metzl, Nicolas; Perez, Fiz F.; Rios, Aida F.; Wanninkhof, Rik; Wetzel, Patrick; Winn, Christopher D.; Yamanaka, Yasuhiro.	
Data: 	2009-09	
Ano: 	2009	
Resumo: 	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).	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00000/11107/7415.pdf

DOI:10.1029/2008JC005183	
Editor: 	Amer Geophysical Union	
Relação: 	http://archimer.ifremer.fr/doc/00000/11107/	
Formato: 	application/pdf	
Fonte: 	Journal Of Geophysical Research Oceans (0148-0227) (Amer Geophysical Union), 2009-09 , Vol. 114 , P. -	
Fonte: 	Copyright 2009 by the American Geophysical Union.