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contributor authorEdwards, Bradley
contributor authorMurphy, David
contributor authorJanzen, Carol
contributor authorLarson, Nordeen
date accessioned2017-06-09T16:31:36Z
date available2017-06-09T16:31:36Z
date copyright2010/05/01
date issued2010
identifier issn0739-0572
identifier otherams-69426.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4211094
description abstractAccurately measuring the dissolved oxygen concentration in the ocean has been the subject of considerable research. Traditionally, the calibration and correction of profiling oxygen measurements has centered on static, steady-state errors, leaving dynamic or time-dependent errors in the sensor response largely untreated. This study evaluates a reengineered Sea-Bird Electronics dissolved-oxygen Clark electrode (SBE 43) and demonstrates the characterization of sensor time response over oceanographic temperatures and pressures as well as treating a time-dependent, pressure-induced effect observed as hysteresis, most notably in deep-ocean oxygen profiles. The effects of temperature and pressure on sensor response are measured separately and then combined into an expression for evaluating an in situ time constant. The physics of the pressure-induced hysteresis in oxygen sensors are discussed and modeled for many individual sensors in several locations throughout the world?s oceans. This effort reduces the underlying uncertainty of Clark oxygen sensors to approximately 0.1% of the measured signal, which is equivalent to the accuracy of the chemical calibration standard.
publisherAmerican Meteorological Society
titleCalibration, Response, and Hysteresis in Deep-Sea Dissolved Oxygen Measurements
typeJournal Paper
journal volume27
journal issue5
journal titleJournal of Atmospheric and Oceanic Technology
identifier doi10.1175/2009JTECHO693.1
journal fristpage920
journal lastpage931
treeJournal of Atmospheric and Oceanic Technology:;2010:;volume( 027 ):;issue: 005
contenttypeFulltext


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