TITLE

Impact of a Two-Way Coupling between an Atmospheric and an Ocean-Ice Model over the Gulf of St. Lawrence

AUTHOR(S)
Pellerin, Pierre; Ritchie, Harold; Saucier, François J.; François Roy; Desjardins, Serge; Valin, Michel; Lee, Vivian
PUB. DATE
June 2004
SOURCE
Monthly Weather Review;Jun2004, Vol. 132 Issue 6, p1379
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The purpose of this study is to present the impacts of a fully interactive coupling between an atmospheric and a sea ice model over the Gulf of St. Lawrence, Canada. The impacts are assessed in terms of the atmospheric and sea ice forecasts produced by the coupled numerical system. The ocean-ice model has been developed at the Maurice Lamontagne Institute, where it runs operationally at a horizontal resolution of 5 km and is driven (one-way coupling) by atmospheric model forecasts provided by the Meteorological Service of Canada (MSC). In this paper the importance of two-way coupling is assessed by comparing the one-way coupled version with a two-way coupled version in which the atmospheric model interacts with the sea ice model during the simulation. The impacts are examined for a case in which the sea ice conditions are changing rapidly. Two atmospheric model configurations have been studied. The first one has a horizontal grid spacing of 24 km, which is the operational configuration used at the Canadian Meteorological Centre. The second one is a high-resolution configuration with a 4-km horizontal grid spacing. A 48-h forecast has been validated using satellite images for the ice and the clouds, and also using the air temperature and precipitation observations. It is shown that the two-way coupled system improves the atmospheric forecast and has a direct impact on the sea ice forecast. It is also found that forecasts are improved with a fine resolution that better resolves the physical events, fluxes, and forcing. The coupling technique is also briefly described and discussed.
ACCESSION #
13416889

 

Related Articles

  • Verification of an MSG Image Forecast Model: METCAST. Delgado, Germán; de Valk, Paul; Redaño, Ángel; van der Veen, Sibbo; Lorente, Jerónimo // Weather & Forecasting;Aug2008, Vol. 23 Issue 4, p712 

    A validation of a very short-range forecast model is presented: the Meteosat Cloud Advection System (METCAST). The model forecasts IR (10.8 μm) images based on Meteosat Second Generation (MSG) data and uses ouput from the Royal Netherlands Meteorological Institute’s [Koninklijk...

  • BALANÇO DE RADIAÇÃO NO PERÍMETRO IRRIGADO SÃO GONÇALO - PB MEDIANTE IMAGENS ORBITAIS1. DA SILVA, BERNARDO BARBOSA; BRAGA, ALEXANDRA CHAVES; BRAGA, CELIA CAMPOS // Revista Caatinga;2011, Vol. 24 Issue 3, p145 

    The net radiation is of great importance in studies related to energy and mass exchanges between the land surface and atmosphere, although it is not measured routinely in a meteorological network. In this sense, the use of satellite images over the last decade has been increasingly used for its...

  • Surface UV Irradiance Obtained by Ozone Monitoring Instrument (OMI) Over Peninsular Malaysia. Shah, N. H. Hisamuddin; Lim, H. S.; Mat Jafri, M. Z. // Pertanika Journal of Science & Technology;Oct2011 Supplement, Vol. 19, p125 

    Ultraviolet radiation is at shorter wavelengths than the visible spectrum (400 to 700 nm) and is divided into three components: UV-A (315 to 400 nm), UV-B (280 to 315 nm), and UV-C (less than 280 nm). Global increases in UV-B fluxes from decreasing stratospheric ozone amounts caused by...

  • DOWNSCALING METEOSAT SECOND GENERATION THERMAL INFRARED IMAGERY. Kolios, Stavros; Georgoulas, George; Stylios, Chrysostomos // Proceedings of the International Conference on Information Techn;2011, p217 

    This paper presents the implementation and the results of downscaling thermal infrared satellite imagery produced by Meteosat Second Generation. A new methodology is examined based on computational intelligence techniques for downscaling of a series of consequent infrared images. Our intention...

  • Global land-surface evaporation estimated from satellite-based observations.  // Hydrology & Earth System Sciences Discussions;2010, Vol. 7 Issue 5, p8479 

    No abstract available.

  • Retrieval of Cloud Properties for Partly Cloudy Imager Pixels. Coakley, James A.; Friedman, Michael A.; Tahnk, William R. // Journal of Atmospheric & Oceanic Technology;Jan2005, Vol. 22 Issue 1, p3 

    Retrievals of cloud properties from satellite imagery often invoke the assumption that the fields of view are overcast when cloud-contaminated, even though a significant fraction are only partially cloud-covered. The overcast assumption leads to biases in the retrieved cloud properties: cloud...

  • Cloud Tracking with Satellite Imagery: From the Pioneering Work of Ted Fujita to the Present. Menzel, W. Paul // Bulletin of the American Meteorological Society;Jan2001, Vol. 82 Issue 1, p33 

    Focuses on the evolution of cloud tracking via satellite imagery. Early work on detection of atmospheric motion by remote sensing; Operational satellite detection of winds; Example applications; Research areas.

  • Step-Mountain Technique Applied to an Atmospheric C-Grid Model, or How to Improve Precipitation near Mountains. Russell, Gary L. // Monthly Weather Review;Dec2007, Vol. 135 Issue 12, p4060 

    Starting with Arakawa and Lamb’s second-order C-grid scheme, this paper describes the modifications made to the dynamics to create a C-grid atmospheric model with a variable number of cells for each vertical column. Where mountains exist, grid cells are discarded at the bottom of the...

  • The Influence of Assimilating Dropsonde Data on Typhoon Track and Midlatitude Forecasts. Weissmann, Martin; Harnisch, Florian; Wu, Chun-Chieh; Lin, Po-Hsiung; Ohta, Yoichiro; Yamashita, Koji; Kim, Yeon-Hee; Jeon, Eun-Hee; Nakazawa, Tetsuo; Aberson, Sim // Monthly Weather Review;Mar2011, Vol. 139 Issue 3, p908 

    A unique dataset of targeted dropsonde observations was collected during The Observing System Research and Predictability Experiment (THORPEX) Pacific Asian Regional Campaign (T-PARC) in the autumn of 2008. The campaign was supplemented by an enhancement of the operational Dropsonde Observations...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

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

Try another library?
Sign out of this library

Other Topics