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Monitoring Ocean Heat Content from the Current Generation of Global Ocean Observing Systems : Volume 10, Issue 3 (25/06/2013)

By Von Schuckmann, K.

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Book Id: WPLBN0004020766
Format Type: PDF Article :
File Size: Pages 27
Reproduction Date: 2015

Title: Monitoring Ocean Heat Content from the Current Generation of Global Ocean Observing Systems : Volume 10, Issue 3 (25/06/2013)  
Author: Von Schuckmann, K.
Volume: Vol. 10, Issue 3
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2013
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Speich, S., Cabanes, C., Schuckmann, K. V., Hamon, M., Traon, P. L., Gaillard, F.,...Sallée, J. (2013). Monitoring Ocean Heat Content from the Current Generation of Global Ocean Observing Systems : Volume 10, Issue 3 (25/06/2013). Retrieved from http://www.worldlibrary.net/


Description
Description: Ifremer, Toulon, France. Variations in the world's ocean heat storage and its associated volume changes are a key factor to gauge global warming and to assess the Earth's energy budget. It is also directly link to sea level change, which has a direct impact on coastal populations. Understanding and monitoring heat and sea level change is therefore one of the major legacies of current global ocean observing systems. In this study, we present an inter-comparison of the three of these global ocean observing systems: the ocean temperature/salinity network Argo, the gravimeter GRACE and the satellite altimeters. Their consistency is investigated at global and regional scale during the period 2005–2010 of overlapping time window of re-qualified data. These three datasets allow closing the recent global ocean sea level budget within uncertainties. However, sampling inconsistencies need to be corrected for an accurate budget at global scale. The Argo network allows estimating global ocean heat content and global sea level and reveals a positive change of 0.5 ± 0.1W m−2 and 0.5 ± 0.1 mm yr−1 over the last 8 yr (2005–2012). Regional inter-comparison of the global observing systems highlights the importance of specific ocean basins for the global estimates. Specifically, the Indonesian Archipelago appears as a key region for the global ocean variability. Both the large regional variability and the uncertainties in the current observing systems, prevent us to shed light, from the global sea level perspective, on the climatically important deep ocean changes. This emphasises, once more, the importance of continuing sustained effort in measuring the deep ocean from ship platforms and by setting up a much needed automated deep-Argo network.

Summary
Monitoring ocean heat content from the current generation of global ocean observing systems

Excerpt
Ablain, M., Cazenave, A., Valladeau, G., and Guinehut, S.: A~new assessment of the error budget of global mean sea level rate estimated by satellite altimetry over 1993–2008, Ocean Sci., 5, 193–201, www.ocean-sci.net/5/193/2009/., 2009.; Barker, P. M., Dunn, J. R., Domingues, C. M., and Wijffels, S. E.: Pressure sensor drifts in Argo and their impacts,~J. Atmos. Ocean. Tech., 28, 1036–1049, 2011.; Bettadpur, S.: UTCSR Level-2 Processing Standards Document for Level-2 Product Release 0005, GRACE 327–742, CSR Publ. GR-12-xx, Rev 4.0, University of Texas at Austin, Austin, 16 pp., 2012.; Bindoff, N. L., Willebrand, J., Artale, V., Cazenave, A., Gregory, J., Gulev, S., Hanawa, K., Le Quéré, C., Levitus, S., Nojiri, Y., Shum, C. K., Talley, L. D., and Unnikrishnan, A.: Observations: oceanic climate change and sea level, in: Climate Change 2007: The Physical Science Basis, Contribution of Working Group 1 to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Solomon,~S. et~al., chap. 5, Cambridge Univ. Press, Cambridge, UK, 385–432, 2007.; Böning, C., Dispert, A., Visbeck, M., Rintoul, S. R. and Schwartzkopf, F. U.: The response of the Antarctic Circumpolar Current to recent climate change, Nat. Geosci., 1, 864–869, doi:10.1038/ngeo362, 2008.; Böning, C., Willis, J. K., Landerer, F. W., Nerem, R. S., and Fasullo, J.: The 2011 La Niña: so strong, the oceans fell, Geophys. Res. Lett., 39, L19602, doi:10.1029/2012GL053055, 2012.; Cabanes, C., Grouazel, A., von Schuckmann, K., Hamon, M., Turpin, V., Coatanoan, C., Paris, F., Guinehut, S., Boone, C., Ferry, N., de Boyer Montégut, C., Carval, T., Reverdin, G., Pouliquen, S., and Le Traon, P.-Y.: The CORA dataset: validation and diagnostics of in-situ ocean temperature and salinity measurements, Ocean Sci., 9, 1–18, doi:10.5194/os-9-1-2013, 2013.; Cazenave, A. and Llovel, W.: Contemporary sea level rise, Ann. Rev. Mar. Sci., 2, 145–173, doi:10.1146/annurev-marine-120308-081105, 2010.; Cazenave, A., Dominh, K., Guinehut, S., Berthier, E., Llovel, W., Ramillien, G., Ablain, M., and Larnicol, G.: Sea level budget over 2003–2008: a~reevaluation from GRACE space gravimetry, satellite altimetry and Argo, Global Planet. Change, 65, 83–88, 2009.; Cazenave, A., Henry, O., Munier, S., Delcroix, T., Gordon, A. L., Meyssignac, B., Llovel, W., Palanisamy, H. and Becker, M.: Estimating ENSO influence on the global mean sea level over 1993–2010, Mar. Geod., 35, 82–97, doi:10.1080/01490419.2012.718209, 2012.; Chambers, D. P.: Calculating trends from GRACE in the presence of large changes in ice storage and ocean mass, Geophys.~J. Int., 176, 415–419, doi:10.1111/j.1365-246X.2008.04012.x, 2009.; Chambers, D. P.: ENSO-correlated fluctuations in ocean bottom pressure and wind-stress curl in the North Pacific, Ocean Sci., 7, 685–692,

 

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