PUBLISHERS' ADDRESSES

PUBLISHERS' ADDRESSES Laprise et al. This model was originally developed by Krishnamurti et al. provide a detailed description Robert and collaborators. The same model (MC2) is of the physical initialization in the FSU general circu- used to analyze a case study illustrating the model lation model and its impact on various aspects of nu- sensitivity to the ice extent in the Beaufort Sea by merical weather prediction, using the TOGA COARE Benoit et al. Cote et al. present a 2D prototype of a diy datasets during an intensive observation period. The global, variable resolution primitive equations shal- benefit of the physical initialization is also seen in the low-water model destined to become the new Cana- reduction of the spread of an ensemble of hurricane dian operational model and using a fully implicit/semi- track forecasts. Lagrangian time discretization. Mesinger and Black explore the reasons behind the consistent advantage in skill of the Eta model in fore- A nonhydrostatic version of the ARPEGE/ casting precipitation compared to that of the National ALADIN model is described, based on a new form of Centers for Environmental Prediction (formerly the the fully elastic equations in hydrostatic pressure ter- NMC) Nested Grid Model (NGM). As reasons they rain-following coordinates using an SL time integra- look at spectral resolution and the use of the vertical tion scheme. Various numerical issues arising from this approach are detailed by Geleyn and Bubnova. Williamson presents research work carried out with an experimental spectral transform SLSI version of the NCAR Community Climate Model (CCM2), which does not require the use of conventional quadratic unaliased Gaussian grids since advection is not ex- American Philosophical Society, 104 S. pressed as an Eulerian quadratic product in their for- Fifth St., Philadelphia, PA 19106; mulation. He shows that using this linear grid provides Telephone: 215-440-3427 a 50% increase in resolution in both horizontal dimen- sions at it contains only two-thirds the number of grid Cambridge University Press, 40 W. 20 points of the quadratic grid. This is possible since at St., New York, NY 10011; Telephone: resolutions above T42 the spectral truncation domi- 800-221-4512 nates the accuracy of the solutions. The treatment of the Coriolis terms in a two-time-level Computational Mechanics, 25 Bridge St., SL version of a high-resolution T213, 31-vertical-level Billerica , MA 01821; Telephone: ECMWF spectral model is considered by Temperton. 781-667-5841 Two possible treatments are considered, one consisting of the inclusion of the Coriolis terms in the SL advec- Kluwer Academic Publishers, 101 Philip tion, the latter turning out to be more advantageous. Dr., Norwell, MA 02061; Telephone: 617- The paper of Daley applies a Kalman filter algo- 871-6600 rithm to examine constituent data assimilation in two discret e 2D models of the transport equation NRC Research Press, Montreal Rd., Bldg. discretized by either a semi-Lagrangian or an upstream M55, Ottawa ON K1A OR6, Canada differencing approach. He studies first their effect on error propagation by constituent transport algorithm, Routledge, 29 W. 35 St., New York, NY proceedin g to address the important issue of 10001; Telephone: 212-244-3336 observability, finding that few observations were re- quired for observability of constituents. The enhanced Royal Swedish Academy of Sciences, observability with the discrete approximations could Box 50005, SE-104 05 Stockholm, Sweden be entirely explained by their inherent dissipation. The regional spectral model of the Japan Meteoro- World Meteorological Society, (Interna- logical Agency is used in an experiment aimed at ob- tional orders only) C. D. 2300, CH-1211 taining improvement of spinup of mesoscale precipi- Geneva 2, Switzerland; Telephone: 41 22 tation based on a two-step diabatic initialization 730 84 78 (Domestic orders should be method, including both a physical initialization of the placed through AMS) water vapor field and a nonlinear normal mode by Matsumura et al. Bulletin of the American Meteorological Society 217 3 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of the American Meteorological Society American Meteorological Society

PUBLISHERS' ADDRESSES

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American Meteorological Society
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10.1175/1520-0477-79.10.2173
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Abstract

Laprise et al. This model was originally developed by Krishnamurti et al. provide a detailed description Robert and collaborators. The same model (MC2) is of the physical initialization in the FSU general circu- used to analyze a case study illustrating the model lation model and its impact on various aspects of nu- sensitivity to the ice extent in the Beaufort Sea by merical weather prediction, using the TOGA COARE Benoit et al. Cote et al. present a 2D prototype of a diy datasets during an intensive observation period. The global, variable resolution primitive equations shal- benefit of the physical initialization is also seen in the low-water model destined to become the new Cana- reduction of the spread of an ensemble of hurricane dian operational model and using a fully implicit/semi- track forecasts. Lagrangian time discretization. Mesinger and Black explore the reasons behind the consistent advantage in skill of the Eta model in fore- A nonhydrostatic version of the ARPEGE/ casting precipitation compared to that of the National ALADIN model is described, based on a new form of Centers for Environmental Prediction (formerly the the fully elastic equations in hydrostatic pressure ter- NMC) Nested Grid Model (NGM). As reasons they rain-following coordinates using an SL time integra- look at spectral resolution and the use of the vertical tion scheme. Various numerical issues arising from this approach are detailed by Geleyn and Bubnova. Williamson presents research work carried out with an experimental spectral transform SLSI version of the NCAR Community Climate Model (CCM2), which does not require the use of conventional quadratic unaliased Gaussian grids since advection is not ex- American Philosophical Society, 104 S. pressed as an Eulerian quadratic product in their for- Fifth St., Philadelphia, PA 19106; mulation. He shows that using this linear grid provides Telephone: 215-440-3427 a 50% increase in resolution in both horizontal dimen- sions at it contains only two-thirds the number of grid Cambridge University Press, 40 W. 20 points of the quadratic grid. This is possible since at St., New York, NY 10011; Telephone: resolutions above T42 the spectral truncation domi- 800-221-4512 nates the accuracy of the solutions. The treatment of the Coriolis terms in a two-time-level Computational Mechanics, 25 Bridge St., SL version of a high-resolution T213, 31-vertical-level Billerica , MA 01821; Telephone: ECMWF spectral model is considered by Temperton. 781-667-5841 Two possible treatments are considered, one consisting of the inclusion of the Coriolis terms in the SL advec- Kluwer Academic Publishers, 101 Philip tion, the latter turning out to be more advantageous. Dr., Norwell, MA 02061; Telephone: 617- The paper of Daley applies a Kalman filter algo- 871-6600 rithm to examine constituent data assimilation in two discret e 2D models of the transport equation NRC Research Press, Montreal Rd., Bldg. discretized by either a semi-Lagrangian or an upstream M55, Ottawa ON K1A OR6, Canada differencing approach. He studies first their effect on error propagation by constituent transport algorithm, Routledge, 29 W. 35 St., New York, NY proceedin g to address the important issue of 10001; Telephone: 212-244-3336 observability, finding that few observations were re- quired for observability of constituents. The enhanced Royal Swedish Academy of Sciences, observability with the discrete approximations could Box 50005, SE-104 05 Stockholm, Sweden be entirely explained by their inherent dissipation. The regional spectral model of the Japan Meteoro- World Meteorological Society, (Interna- logical Agency is used in an experiment aimed at ob- tional orders only) C. D. 2300, CH-1211 taining improvement of spinup of mesoscale precipi- Geneva 2, Switzerland; Telephone: 41 22 tation based on a two-step diabatic initialization 730 84 78 (Domestic orders should be method, including both a physical initialization of the placed through AMS) water vapor field and a nonlinear normal mode by Matsumura et al. Bulletin of the American Meteorological Society 217 3

Journal

Bulletin of the American Meteorological SocietyAmerican Meteorological Society

Published: Oct 1, 1998

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