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Weighing the Ocean with Bottom-pressure Sensors: Robustness of the Ocean Mass Annual Cycle Estimate : Volume 10, Issue 4 (11/08/2014)

By Williams, Joanne

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Book Id: WPLBN0004020220
Format Type: PDF Article :
File Size: Pages 18
Reproduction Date: 2015

Title: Weighing the Ocean with Bottom-pressure Sensors: Robustness of the Ocean Mass Annual Cycle Estimate : Volume 10, Issue 4 (11/08/2014)  
Author: Williams, Joanne
Volume: Vol. 10, Issue 4
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Hughes, C. W., Tamisiea, M. E., Williams, J., & P. William, S. D. (2014). Weighing the Ocean with Bottom-pressure Sensors: Robustness of the Ocean Mass Annual Cycle Estimate : Volume 10, Issue 4 (11/08/2014). Retrieved from

Description: National Oceanography Centre, Joseph Proudman Building, 6 Brownlow St, Liverpool L3 5DA, UK. We use ocean bottom-pressure measurements from 17 tropical sites to determine the annual cycle of ocean mass. We show that such a calculation is robust, and use three methods to estimate errors in the mass determination. Our final best estimate, using data from the best sites and two ocean models, is that the annual cycle has an amplitude of 0.85 mbar (equivalent to 8.4 mm of sea level, or 3100 Gt of water), with a 95% chance of lying within the range 0.61–1.17 mbar. The time of the peak in ocean mass is 10 October, with 95% chance of occurring between 21 September and 25 October. The simultaneous fitting of annual ocean mass also improves the fitting of bottom-pressure instrument drift.

Weighing the ocean with bottom-pressure sensors: robustness of the ocean mass annual cycle estimate

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