ECCO version 4: an integrated framework for non-linear inverse modeling and global ocean state estimation
Gael Forget,Jean-Michel Campin,Patrick Heimbach,Patrick Heimbach,Christopher N. Hill,Rui M. Ponte,Carl Wunsch +6 more
TLDR
The ECCO v4 non-linear inverse modeling framework and its baseline solution for the evolving ocean state over the period 1992-2011 are publicly available and subjected to regular, automated regression tests as mentioned in this paper.Abstract:
. This paper presents the ECCO v4 non-linear inverse modeling framework and its baseline solution for the evolving ocean state over the period 1992–2011. Both components are publicly available and subjected to regular, automated regression tests. The modeling framework includes sets of global conformal grids, a global model setup, implementations of data constraints and control parameters, an interface to algorithmic differentiation, as well as a grid-independent, fully capable Matlab toolbox. The baseline ECCO v4 solution is a dynamically consistent ocean state estimate without unidentified sources of heat and buoyancy, which any interested user will be able to reproduce accurately. The solution is an acceptable fit to most data and has been found to be physically plausible in many respects, as documented here and in related publications. Users are being provided with capabilities to assess model–data misfits for themselves. The synergy between modeling and data synthesis is asserted through the joint presentation of the modeling framework and the state estimate. In particular, the inverse estimate of parameterized physics was instrumental in improving the fit to the observed hydrography, and becomes an integral part of the ocean model setup available for general use. More generally, a first assessment of the relative importance of external, parametric and structural model errors is presented. Parametric and external model uncertainties appear to be of comparable importance and dominate over structural model uncertainty. The results generally underline the importance of including turbulent transport parameters in the inverse problem.read more
Citations
More filters
Journal ArticleDOI
Observations, inferences, and mechanisms of the Atlantic Meridional Overturning Circulation: A review
Martha W. Buckley,John Marshall +1 more
TL;DR: A review about the Atlantic Meridional Overturning Circulation (AMOC), its mean structure, temporal variability, controlling mechanisms, and role in the coupled climate system can be found in this article.
Journal ArticleDOI
GISS-E2.1: Configurations and Climatology.
Maxwell Kelley,Gavin A. Schmidt,Larissa Nazarenko,Larissa Nazarenko,Susanne E. Bauer,Reto Ruedy,Gary L. Russell,Andrew S. Ackerman,Igor Aleinov,Igor Aleinov,Michael Bauer,Michael Bauer,Rainer Bleck,Rainer Bleck,Vittorio Canuto,G. Cesana,G. Cesana,Y. Cheng,Y. Cheng,Thomas Clune,Ben I. Cook,Carlos A. Cruz,Anthony D. Del Genio,Gregory S. Elsaesser,Gregory S. Elsaesser,Greg Faluvegi,Greg Faluvegi,Nancy Y. Kiang,Daehyun Kim,Andrew A. Lacis,Anthony Leboissetier,Allegra N. LeGrande,Ken K. Lo,John Marshall,Elaine Matthews,Sonali McDermid,Keren Mezuman,Keren Mezuman,Ron L. Miller,Lee T. Murray,Valdar Oinas,Clara Orbe,Carlos Pérez García-Pando,Carlos Pérez García-Pando,J. P. Perlwitz,Michael J. Puma,Michael J. Puma,David Rind,Anastasia Romanou,Drew Shindell,Shan Sun,N. Tausnev,Kostas Tsigaridis,Kostas Tsigaridis,George Tselioudis,Ensheng Weng,Ensheng Weng,Jingbo Wu,Jingbo Wu,Mao-Sung Yao +59 more
TL;DR: There have been specific improvements in representations of modes of variability (such as the Madden‐Julian Oscillation and other modes in the Pacific) and significant improvements in the simulation of the climate of the Southern Oceans, including sea ice.
Journal ArticleDOI
OMIP contribution to CMIP6: experimental and diagnostic protocol for the physical component of the Ocean Model Intercomparison Project
Stephen M. Griffies,Gokhan Danabasoglu,Paul J. Durack,Alistair Adcroft,Venkatramani Balaji,Claus W. Böning,Eric P. Chassignet,Enrique N. Curchitser,Julie Deshayes,Helge Drange,Baylor Fox-Kemper,Peter J. Gleckler,Jonathan M. Gregory,Helmuth Haak,Robert Hallberg,Patrick Heimbach,Helene T. Hewitt,David M. Holland,Tatiana Ilyina,Johann H. Jungclaus,Yoshiki Komuro,John P. Krasting,William G. Large,Simon J. Marsland,Simona Masina,Trevor J. McDougall,A. J. George Nurser,James C. Orr,Anna Pirani,Fangli Qiao,Ronald J. Stouffer,Karl E. Taylor,Anne-Marie Tréguier,Hiroyuki Tsujino,Petteri Uotila,Maria Valdivieso,Qiang Wang,Michael Winton,Stephen Yeager +38 more
TL;DR: The Ocean Model Intercomparison Project (OMIP) as mentioned in this paper is an endorsed project in the Coupled Model Matching Project Phase 6 (CMIP6) which provides a framework for evaluating, understanding, and improving ocean, sea-ice, tracer, and biogeochemical components of climate and earth system models.
Journal ArticleDOI
Mesoscale to submesoscale wavenumber spectra in Drake Passage
TL;DR: In this paper, the upper-ocean (0.200m) horizontal wavenumber spectra in the Drake Passage from 13yr of shipboard ADCP measurements, altimeter data, and a high-resolution numerical simulation were discussed.
Journal ArticleDOI
Global reconstruction of historical ocean heat storage and transport
TL;DR: A method is presented to reconstruct ocean temperature changes with global, full-depth ocean coverage, revealing warming of 436 ×1021 J since 1871, which demonstrates that the ocean absorbed as much heat during 1921–1946 as during 1990–2015.
References
More filters
Journal ArticleDOI
The ERA-Interim reanalysis: configuration and performance of the data assimilation system
Dick Dee,S. Uppala,Adrian Simmons,Paul Berrisford,Paul Poli,Shinya Kobayashi,Ulf Andrae,Magdalena Balmaseda,Gianpaolo Balsamo,Peter Bauer,Peter Bechtold,Anton Beljaars,L. van de Berg,Jean Bidlot,Niels Bormann,C. Delsol,Rossana Dragani,Manuel Fuentes,Alan J. Geer,Leopold Haimberger,Sean Healy,Hans Hersbach,Elías Hólm,Lars Isaksen,P. Kallberg,Martin Köhler,Marco Matricardi,A. P. McNally,B. M. Monge-Sanz,Jean-Jacques Morcrette,B.-K. Park,Carole Peubey,P. de Rosnay,Christina Tavolato,Jean-Noël Thépaut,Frederic Vitart +35 more
TL;DR: ERA-Interim as discussed by the authors is the latest global atmospheric reanalysis produced by the European Centre for Medium-Range Weather Forecasts (ECMWF), which will extend back to the early part of the twentieth century.
Journal ArticleDOI
An Improved In Situ and Satellite SST Analysis for Climate
TL;DR: A weekly 1° spatial resolution optimum interpolation (OI) sea surface temperature (SST) analysis has been produced at the National Oceanic and Atmospheric Administration (NOAA) using both in situ and satellite data from November 1981 to the present as mentioned in this paper.
Journal ArticleDOI
The regional oceanic modeling system (ROMS): a split-explicit, free-surface, topography-following-coordinate oceanic model
TL;DR: In this paper, a split-explicit hydrodynamic kernel for a realistic oceanic model is proposed, which addresses multiple numerical issues associated with mode splitting, and is compatible with a variety of centered and upstream-biased high-order advection algorithms, and helps to mitigate computational cost of expensive physical parameterization of mixing processes and submodels.
Journal ArticleDOI
Oceanic vertical mixing: A review and a model with a nonlocal boundary layer parameterization
TL;DR: In this article, a new parameterization of oceanic boundary layer mixing is developed to accommodate some of this physics, including a scheme for determining the boundary layer depth h, where the turbulent contribution to the vertical shear of a bulk Richardson number is parameterized.
Journal ArticleDOI
Analysis of discrete ill-posed problems by means of the L-curve
TL;DR: The main purpose of this paper is to advocate the use of the graph associated with Tikhonov regularization in the numerical treatment of discrete ill-posed problems, and to demonstrate several important relations between regularized solutions and the graph.
Related Papers (5)
The ERA-Interim reanalysis: configuration and performance of the data assimilation system
Dick Dee,S. Uppala,Adrian Simmons,Paul Berrisford,Paul Poli,Shinya Kobayashi,Ulf Andrae,Magdalena Balmaseda,Gianpaolo Balsamo,Peter Bauer,Peter Bechtold,Anton Beljaars,L. van de Berg,Jean Bidlot,Niels Bormann,C. Delsol,Rossana Dragani,Manuel Fuentes,Alan J. Geer,Leopold Haimberger,Sean Healy,Hans Hersbach,Elías Hólm,Lars Isaksen,P. Kallberg,Martin Köhler,Marco Matricardi,A. P. McNally,B. M. Monge-Sanz,Jean-Jacques Morcrette,B.-K. Park,Carole Peubey,P. de Rosnay,Christina Tavolato,Jean-Noël Thépaut,Frederic Vitart +35 more