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Sea Level Budget Over 2005–2013: Missing Contributions and Data Errors : Volume 12, Issue 3 (13/05/2015)

By Dieng, H. B.

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Book Id: WPLBN0004020897
Format Type: PDF Article :
File Size: Pages 34
Reproduction Date: 2015

Title: Sea Level Budget Over 2005–2013: Missing Contributions and Data Errors : Volume 12, Issue 3 (13/05/2015)  
Author: Dieng, H. B.
Volume: Vol. 12, Issue 3
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2015
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Schuckmann, K. V., Ablain, M., Dieng, H. B., Meyssignac, B., & Cazenave, A. (2015). Sea Level Budget Over 2005–2013: Missing Contributions and Data Errors : Volume 12, Issue 3 (13/05/2015). Retrieved from http://worldlibrary.net/


Description
Description: Laboratoire d'Etudes en Géophysique et Océanographie Spatiales – Centre National d'Etudes Spatiales (LEGOS – CNES), Toulouse, France. Based on the sea level budget closure approach, this study investigates the residuals between observed global mean sea level (GMSL) and the sum of components (steric sea level and ocean mass) for the period January 2005 to December 2013. The objective is to identify the impact of errors in one or several components of the sea level budget on the residual time series. This is a key issue if we want to constrain missing contributions such as the contribution to sea level rise from the deep ocean (> 2000m). For that purpose, we use several data sets as processed by different groups: six altimetry products for the GMSL, four Argo products plus the ORAS4 ocean reanalysis for the steric sea level and three GRACE-based ocean mass products. We find that over the study time span, the observed trend differences in the residuals of the sea level budget can be as large as ~0.55mm yr−1. These trend differences essentially result from the processing of the altimetry data (e.g., choice the geophysical corrections and method of averaging the along-track altimetry data). At short time scale (from sub-seasonal to multi-annual), residual anomalies are significantly correlated with ocean mass and steric sea level anomalies (depending on the time span), indicating that the residual anomalies are related to errors in both GRACE-based ocean mass and Argo-based steric data. Efforts are needed to reduce these various sources of errors before using the sea level budget approach to estimate missing contributions such as the deep ocean heat content.

Summary
Sea level budget over 2005–2013: missing contributions and data errors

Excerpt
Balmaseda, M. A., Trenberth, K., and Kallen, E.: Distinctive climate signals in reanalysis of global ocean heat content, Geophys. Res. Lett., 40, 1–6, doi:10.1002/grl.50382, 2013a.; Balmaseda, M. A., Mogensen, K., and Weaver, A. T.: Evaluation of the ECMWF ocean reanalysis system ORAS4, Q. J. R. Meteorol. Soc., 139, 1132–1161, doi:10.1002/qj.2063, 2013b.; Ablain, M., Cazenave, A., Larnicol, G., Balmaseda, M., Cipollini, P., Faugère, Y., Fernandes, M. J., Henry, O., Johannessen, J. A., Knudsen, P., Andersen, O., Legeais, J., Meyssignac, B., Picot, N., Roca, M., Rudenko, S., Scharffenberg, M. G., Stammer, D., Timms, G., and Benveniste, J.: Improved sea level record over the satellite altimetry era (1993–2010) from the Climate Change Initiative project, Ocean Sci., 11, 67–82, doi:10.5194/os-11-67-2015, 2015.; Abraham, J. P., Baringer, M., Bindoff, N. L.,Boyer, T. , Cheng, L. J., Church, J. A., Conroy, J. L., Domingues, C. M., Fasullo, J. T., Gilson, J., Goni, G., Good, S. A., Gorman, J. M., Gouretski, V., Ishii, M., Johnson, G. C., Kizu, S., Lyman, J. M., Macdonald, A. M., Minkowycz, W. J., Moffitt, S. E., Palmer, M. D., Piola, A. R., Reseghetti, F., Schuckmann, K., Trenberth, K. E., Velicogna, I., and Willis, J. K.: A review of global ocean temperature observations: implications for ocean heat content estimates and climate change, Rev. Geophys., 51, 450–483, doi:10.1002/rog.20022, 2013.; Boening, C., Willis, J. K., Landerer, F. W., and Nerem, R. S.: The 2011 La Nina: so strong, the oceans fell, Geophys. Res. Lett., 39, L19602, doi:10.1029/2012GL053055, 2012.; Cazenave, A., Dieng, H., Meyssignac, B., von Schuckmann, K., Decharme, B., and Berthier, E.: The rate of sea level rise, Nature Climate Change, 4, 358–361, doi:10.1038/NCLIMATE2159, 2014.; Chambers, D. P. and Bonin, J. A.: Evaluation of Release-05 GRACE time-variable gravity coefficients over the ocean, Ocean Sci., 8, 859–868, doi:10.5194/os-8-859-2012, 2012.; Chambers, D. P. and Schroeter, J.: Measuring ocean mass variations from satellite gravimetry, J. Geodyn., 52, 333–343, 2011.; Chambers, D. P. and Willis, J. K.: Low-frequency exchange of mass between ocean basins, J. Geophys. Res., 114, C11008, doi:10.1029/2009JC005518, 2009.; Chambers, D. P., Wahr, J., Tamisiea, M. E., and Nerem, R. S.: Ocean mass from GRACE and glacial isostatic adjustment, J. Geophys. Res., 115, B11415, doi:10.1029/2010JB007530, 2010.; Chen, X. and Tung, K.-K.: Varying planetary heat sink led to global warming slowdown and acceleration, Science, 345, 897–903, 2014.; Church, J. A., Clark, P. U., Cazenave, A., Gregory, J. M., Jevrejeva, S., Levermann, A., Merrifield, M. A., Milne, G. A., Nerem, R. S., Nunn, P. D., Payne, A. J., Pfeffer, W. T., Stammer, D., and Unnikrishnan, A. S.: Sea level change, in: Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V., and Midgley, P. M., Cambridge University Press, Cambridge, UK and New York, NY, USA, 2013.; Dieng, H. B., Palanisamy, H., Cazenave, A., Meyssignac, B., and von Schuckmann, K.: The sea level budget since 2003: inference on the deep ocean heat content, Surv. Geophys., 36, 209–229, doi:10.1007/s10712-015-9314-6

 

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