Modeling Global Sea Ice with a Thickness and Enthalpy Distribution Model in Generalized Curvilinear Coordinates

Zhang, Jinlun; Rothrock, D. A.
May 2003
Monthly Weather Review;May2003, Vol. 131 Issue 5, p845
Academic Journal
A parallel ocean and ice model (POIM) in generalized orthogonal curvilinear coordinates has been developed for global climate studies. The POIM couples the Parallel Ocean Program (POP) with a 12-category thickness and enthalpy distribution (TED) sea ice model. Although the POIM aims at modeling the global ocean and sea ice system, the focus of this study is on the presentation, implementation, and evaluation of the TED sea ice model in a generalized coordinate system. The TED sea ice model is a dynamic thermodynamic model that also explicitly simulates sea ice ridging. Using a viscous plastic rheology, the TED model is formulated such that all the metric terms in generalized curvilinear coordinates are retained. Following the POP's structure for parallel computation, the TED model is designed to be run on a variety of computer architectures: parallel, serial, or vector. When run on a computer cluster with 10 parallel processors, the parallel performance of the POIM is close to that of a corresponding POP ocean-only model. Model results show that the POIM captures the major features of sea ice motion, concentration, extent, and thickness in both polar oceans. The results are in reasonably good agreement with buoy observations of ice motion, satellite observations of ice extent, and submarine observations of ice thickness. The model biases are within 8% in Arctic ice motion, within 9% in Arctic ice thickness, and within 14% in ice extent in both hemispheres. The model captures 56% of the variance of ice thickness along the 1993 submarine track in the Arctic. The simulated ridged ice has various thicknesses, up to 20 m in the Arctic and 16 m in the Southern Ocean. Most of the simulated ice is 1-3 m thick in the Arctic and 1-2 m thick in the Southern Ocean. The results indicate that, in the Atlantic-Indian sector of the Southern Ocean, the oceanic heating, mainly due to convective mixing, can readily exceed the atmospheric cooling at the surface in midwinter, thus...


Related Articles

  • A Thickness and Enthalpy Distribution Sea-Ice Model. Jinlun Zhang; Rothrock, Drew // Journal of Physical Oceanography;Oct2001, Vol. 31 Issue 10, p2986 

    Assesses the theory of sea ice thickness distribution developed by Thorndike. Benefits of implementing enthalpy-distribution equation; Usefulness of the conserving ice thermal energy in predicting ice growth; Monthly variations in mean ice growth rate for different ice thickness ranges.

  • NUMERICAL SIMULATION OF NOZZLE FLOW WITH CHEMICAL EQUILIBRIUM. Al Kady, Mohamed A.; Owis, Farouk M. // Journal of Engineering & Applied Sciences;May2013, Vol. 8 Issue 5, p316 

    The compressible two-dimensional planar and axisymmetric Navier-Stokes equations are solved in generalized curvilinear coordinates to simulate non-reacting and chemical equilibrium nozzle flows. A zonal turbulence model of κ -ω is used in the simulations to compute the eddy viscosity. A...

  • On introducing engineering strain. Williams, Harry E. // International Journal of Mechanical Engineering Education;Oct2001, Vol. 29 Issue 4, p397 

    Identifies the normal component of engineering strain as the component of the relative displacement of the ends of a line segment divided by the initial length of the line segment. Discussion of engineering stress as the intrinsic property of a loaded material associated with force; Generation...

  • A Self-Consistent Method for Describing Curvilinear Charged Beams. Naumov, N. D. // Technical Physics;Sep2000, Vol. 45 Issue 9, p1196 

    A self-similar solution to the self-consistent gasdynamics equations is used to derive envelope equations for a thin curvilinear charged beam propagating in an external electromagnetic field.

  • Visually perceiving heading on circular and elliptical paths. Nam-Gyoon Kim; Turvey, M.T. // Journal of Experimental Psychology. Human Perception & Performan;Dec98, Vol. 24 Issue 6, p1690 

    Examines the results of experiments addressing the perception of curvilinear heading under various conditions of optical flow. Effect of perception of heading by optical noise; Random perturbations of vector magnitudes in general curvilinear fields; Impairment of curvilinear heading perception;...

  • curvilinear.  // Taber's Cyclopedic Medical Dictionary (2009);2009, Issue 21, p559 

    A definition of the term "curvilinear," which refers to a curve line, is presented.

  • Instantons in Non-Cartesian Coordinates. Abrikosov, A. A. // Physics of Atomic Nuclei;May2001, Vol. 64 Issue 5, p946 

    The multi-instanton solutions of 't Hooft and of Jackiw, Nohl, and Rebbi are generalized to the case of curvilinear coordinates. The resulting formulas are considerably simplified if the transformation of coordinates is supplemented with a gauge transformation. As a result, the gauge field...

  • On the continua in two-dimensional nonadiabatic magnetohydrodynamic spectra. De Ploey, A.; Van der Linden, R. A. M.; Belie¨n, A. J. C. // Physics of Plasmas;Jun2000, Vol. 7 Issue 6 

    The equations for the continuous subspectra of the linear magnetohydrodynamic (MHD) normal modes spectrum of two-dimensional (2D) plasmas are derived in general curvilinear coordinates, taking nonadiabatic effects in the energy equation into account. Previously published derivations of...

  • General formulation of the vibrational kinetic energy operator in internal bond-angle coordinates. Frederick, John F.; Woywood, Clemens // Journal of Chemical Physics;10/22/1999, Vol. 111 Issue 16, p7255 

    Presents a general formulation of the vibrational kinetic energy operator expressed in internal bond-angle coordinates. Choice of internal coordinates; Formulation of the quantum kinetic energy operator; Properties of the coordinate transformation from atomic Cartesian coordinates to a set of...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics