Untangling spatial and temporal trends in the variability of the Black Sea Cold Intermediate Layer and mixed Layer Depth using the DIVA detrending procedure
Black Sea; Data interpolation; Detrending; Inverse Method; Cold intermediate layer; Mixed layer depth
Abstract :
[en] Current spatial interpolation products may be biased by uneven distribution of measurements in time.
This manuscript presents a detrending method that recognizes and eliminates this bias.
The method estimates temporal trend components in addition to the spatial structure and has been implemented within the Data Interpolating Variational Analysis (DIVA) analysis tool.
The assets of this new detrending method are illustrated by producing monthly and annual climatologies of
two vertical properties of the Black Sea while recognizing their seasonal and interannual variabilities : the mixed layer depth, and the cold content of its Cold Intermediate Layer (CIL).
The temporal trends, given as by-products of the method, are used to analyze the seasonal and interannual variability of these variables over the past decades (1955-2011).
In particular, the CIL interannual variability is related to the cumulated winter air temperature anomalies, explaining 88\% of its variation.
Research Center/Unit :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Earth sciences & physical geography
Author, co-author :
Capet, Arthur ; Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanologie
Troupin, Charles ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Cartensen, Jacob; Aarhus University > Department of Bioscience
Grégoire, Marilaure ; Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Océanologie
Beckers, Jean-Marie ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > GeoHydrodynamics and Environment Research (GHER)
Language :
English
Title :
Untangling spatial and temporal trends in the variability of the Black Sea Cold Intermediate Layer and mixed Layer Depth using the DIVA detrending procedure
Publication date :
26 January 2014
Journal title :
Ocean Dynamics
ISSN :
1616-7341
eISSN :
1616-7228
Publisher :
Springer Science & Business Media B.V., Heidelberg, Germany
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