Accession Number:

ADA535020

Title:

Optimal Linear Fitting for Objective Determination of Ocean Mixed Layer Depth from Glider Profiles

Descriptive Note:

Journal article

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF OCEANOGRAPHY

Personal Author(s):

Report Date:

2010-09-06

Pagination or Media Count:

7.0

Abstract:

A new optimal linear fitting method has been developed to determine mixed layer depth from profile data. This methodology includes three steps 1 fitting the profile data from the first point near the surface to a depth using a linear polynomial, 2 computing the error ratio of absolute bias of few data points below that depth versus the root-mean-square error of data points from the surface to that depth between observed and fitted data, and 3 finding the depth i.e., the mixed layer depth with maximum error ratio. Temperature profiles in the western North Atlantic Ocean over 14 November-15 December 2007, collected from two gliders Seagliders deployed by the Naval Oceanographic Office NAVOCEANO, are used to demonstrate the capability of this method. The mean quality index 1.0 for perfect determination for determining mixed layer depth is greater than 0.97, which is much higher than the critical value of 0.8 for well-defined mixed layer depth with that index.

Subject Categories:

  • Physical and Dynamic Oceanography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE