Understanding past ocean circulations: a nonparametric regression case study.

Samworth, R. and Poore, H. R. (2005) Understanding past ocean circulations: a nonparametric regression case study. Statistical Modelling, 5. pp. 289-307. DOI 10.1191/1471082X05st102oa

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Abstract

Oceanographers study past ocean circulations and their effect on global climate through carbon isotope records obtained from microfossils deposited on the ocean floor. An initial goal is to estimate the carbon isotope levels for the Pacific, Southern and North Atlantic Oceans over the last 23 million years and to provide confidence bands. We consider a nonparametric regression model and demonstrate how several recent developments in methodology make local linear kernel regression an attractive approach for tackling the problem. The results are used to estimate a quantity called the proportion of Northern Component Water and its effect on global climate. Several interesting and important geophysical and oceanographic conclusions are suggested by the study.

Item Type: Article
Uncontrolled Keywords: 2005 AREP 2005 P IA49
Subjects: 01 - Climate Change and Earth-Ocean Atmosphere Systems
02 - Geodynamics, Geophysics and Tectonics
Divisions: 01 - Climate Change and Earth-Ocean Atmosphere Systems
Journal or Publication Title: Statistical Modelling
Volume: 5
Page Range: pp. 289-307
Identification Number: 10.1191/1471082X05st102oa
Depositing User: Sarah Humbert
Date Deposited: 18 Aug 2010 14:48
Last Modified: 23 Jul 2013 09:59
URI: http://eprints.esc.cam.ac.uk/id/eprint/1810

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