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Accuracy of the Mean Sea Level Continuous Record with Future Altimetric Missions: Jason-3 Vs. Sentinel-3A : Volume 12, Issue 4 (17/07/2015)

By Zawadzki, L.

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Book Id: WPLBN0004020865
Format Type: PDF Article :
File Size: Pages 26
Reproduction Date: 2015

Title: Accuracy of the Mean Sea Level Continuous Record with Future Altimetric Missions: Jason-3 Vs. Sentinel-3A : Volume 12, Issue 4 (17/07/2015)  
Author: Zawadzki, L.
Volume: Vol. 12, Issue 4
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2015
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Ablain, M., & Zawadzki, L. (2015). Accuracy of the Mean Sea Level Continuous Record with Future Altimetric Missions: Jason-3 Vs. Sentinel-3A : Volume 12, Issue 4 (17/07/2015). Retrieved from http://worldlibrary.net/


Description
Description: Collecte Localisation Satellite (CLS), Ramonville Saint-Agne, France. The current mean sea level (MSL) continuous record, essential for the understanding of climate evolution, is computed with the altimetric measurements of the TOPEX/Poseidon mission, succeeded by Jason-1 and later Jason-2. The accurate continuity of the record is ensured by the conservation of the historical TOPEX orbit, but also by calibration phases between the successive missions which enable a rigorous computation of their relative biases. In order to extend the current MSL record, Jason-3 will be the natural successor of Jason-2: on the same orbit with a calibration phase. Shortly after Jason-3, another altimetric climate-oriented mission, Sentinel-3a, will be launched on a different orbit. In this paper, simulated altimetric sea level data is used to study the sensitivity of the MSL continuous record to the change of the historical orbit for the new Sentinel-3a orbit. By estimating the impact of the absence of calibration phase on the MSL continuous record trend accuracy at global and regional scale and the impact of the orbit change on the long-term continuity of this MSL record, this study shows that linking Sentinel-3a data instead of Jason-3 to the MSL continuous record would prevent from meeting climate users requirements regarding the MSL trend accuracy.

Summary
Accuracy of the mean sea level continuous record with future altimetric missions: Jason-3 vs. Sentinel-3a

Excerpt
Ablain, M.: Validation Report: WP2500 Regional SSH Bias Corrections between Altimetry Missions, available at: http://www.esa-sealevel-cci.org/webfm_send/182 (last access: 20 May 2015), 2013.; 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, doi:10.5194/os-5-193-2009, 2009.; Ablain, M., Larnicol, G., Cazenave, A., Legeais, J. and Faugere, Y.: Two Decades of Global and Regional Sea Level Observation from the ESA Climate Change Initiative Sea Level Project, OSTST, available at: http://www.aviso.altimetry.fr/fileadmin/documents/OSTST/2013/oral/Ablain_Pres_OSTST2013_SLCCI.pdf (last access: 20 May 2015), 2013.; 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.; Berger, M., Moreno, J., Johannessen, J., Pieternel, A., Levelt, F., and Hanssen, R. F.: ESA's sentinel missions in support of Earth system science, Remote Sens. Environ., 120, 84–90, doi:10.1016/j.rse.2011.07.023, 2012.; Cazenave, A.: Present-day sea level change: observations and causes, Rev. Geophys., 42, RG3001, doi:10.1029/2003RG000139, 2004.; Dibarboure, G., Pujol, M.-I., Briol, F., Le Traon, P. Y., Larnicol, G., Picot, N., Mertz, F., and Ablain, M.: Jason-2 in DUACS: updated system description, first tandem results and impact on processing and products, Mar. Geod., 34, 214–241, doi:10.1080/01490419.2011.584826, 2011.; Donlon, C., Berruti, B., Buongiorno, A., Ferreira, M.-H., Féménias, P., Frerick, J., Goryl, P., Klein, U., Laur, H., Mavrocordatos, C., Nieke, J., Rebhan, H., Seitza, B., Stroede, J., and Sciarra, R.: The Global Monitoring for Environment and Security (GMES) Sentinel-3 mission, Remote Sens. Environ., 120, 37–57, doi:10.1016/j.rse.2011.07.024, 2012.; Dorandeu, J., Ablain, M., and Le Traon, P.-Y.: Reducing cross-track geoid gradient errors around TOPEX/Poseidon and Jason-1 nominal tracks: application to calculation of sea level anomalies, J. Atmos. Ocean. Tech. 20, 1826–1838, doi:2.0.CO;2>10.1175/1520-0426(2003)020<1826:RCGGEA>2.0.CO;2, 2003.; Ferry, N., Parent, L., Garric, G., Barnier, B., Molines, J.-M., Guinehut, S., Mulet, S., Haines, K., Valdivieso, M., Masina, S., and Storto, A.: Myocean Eddy-Permitting Global Ocean Reanalysis Products?, no. February, available at: http://transition.myocean.eu/automne_modules_files/pscientifpub/public/r648_16_myocean_global_ocean_reanalysis_products_ferry.pdf (last access: 20 May 2015), 2012.; GCOS: Systematic Observation Requirements For Satellite-Based Data Products for Climate, available at: https://www.wmo.int/pages/prog/gcos/Publications/gcos-154.pdf (last ac

 

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