TITLE

Geostrophic Adjustment for Reversibly Staggered Grids

AUTHOR(S)
McGregor, John L.
PUB. DATE
May 2005
SOURCE
Monthly Weather Review;May2005, Vol. 133 Issue 5, p1119
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A technique is presented for meteorological modeling in which all variables are held on an unstaggered grid, but the winds are transformed to a staggered C grid for the gravity wave calculations. An important feature is the use of a new reversible interpolation procedure for the staggering–unstaggering of the winds. This reversible procedure has excellent dispersion properties for geostrophic adjustment of the linearized shallow-water equations, being generally superior to those of the A, B, and C grids. Its dispersion behavior is generally similar to that of the unstaggered Z grid of Randall, which carries divergence and vorticity as primary variables. The scheme has fewer computational overheads than the Z grid.
ACCESSION #
17239754

 

Related Articles

  • Scientific Assessment of the SWIFT Instrument Design. Rahnama, Peyman; Gault, William A.; McDade, Ian C.; Shepherd, Gordon G. // Journal of Atmospheric & Oceanic Technology;Sep2013, Vol. 30 Issue 9, p2081 

    The Stratospheric Wind Interferometer for Transport Studies (SWIFT) is a proposed satellite instrument. SWIFT is an imaging field-widened Doppler Michelson interferometer. It observes a thermal IR atmospheric emission line in a limb-viewing geometry in order to measure stratospheric winds and...

  • An Idealized Model Study Relevant to the Dynamics of the Midwinter Minimum of the Pacific Storm Track. Yi Deng; Mak, Mankin // Journal of the Atmospheric Sciences;4/1/2005, Vol. 62 Issue 4, p1209 

    The synoptic variability of a two-level quasigeostrophic flow in response to plausible changes in the forcing of a localized baroclinic jet is investigated in the context of the midwinter minimum of the Pacific storm track (MWM). The changes in the model forcing are introduced in terms of a...

  • Is There a Statistical Connection between Stratospheric Sudden Warming and Tropospheric Blocking Events? Taguchi, Masakazu // Journal of the Atmospheric Sciences;Apr2008, Vol. 65 Issue 4, p1442 

    This paper presents statistical analyses of possible associations between major stratospheric sudden warming (SSW) and tropospheric blocking events in the Northern Hemisphere (NH) with 49 yr of NCEP–NCAR reanalysis data from 1957/58 to 2005/06. Using a random shuffling or...

  • A comparison of winds from the STRATAN data assimilation system to balanced wind estimates. Coy, Lawrence; Rood, Richard B. // Journal of the Atmospheric Sciences;8/1/94, Vol. 51 Issue 15, p2309 

    Compares winds derived from a stratospheric and tropospheric data assimilation system (STRATAN) with winds derived from National Meteorological Center/Climate Analysis Center (NMC/CAC) heights. STRATAN winds at middle latitudes in lower stratosphere; Usefulness of STRATAN winds in tropics.

  • Mesoscale Wind Field Modifications over the Baltic Sea. Källstrand, Birgitta; Bergström, Hans; Højstrup, Jørgen; Smedman, Ann-Sofi // Boundary-Layer Meteorology;May2000, Vol. 95 Issue 2, p161 

    For two consecutive days during spring 1997, the wind field over the Baltic Sea has been studied. The strength of the geostrophic wind speed is the major difference in synoptic conditions between these two days. During both days, the mesoscale wind field over most of the Baltic Sea is quite...

  • Some Effects Of An Ekman Boundary-Layer Parameterization On Various Models Of Atmospheric Flow. Blumen, William // Boundary-Layer Meteorology;Jun2001, Vol. 99 Issue 3, p509 

    The traditional Ekman boundary-layer parameterization is introduced into the quasigeostrophic Eady baroclinic instability model and into the deformation flow model, to couple the planetary boundary layer with the inviscid interior flow aloft. An explicit time-dependent version of this...

  • On the Origin of Near-Surface Streaks in the Neutrally-Stratified Planetary Boundary Layer. Drobinski, Philippe; Foster, Ralph C. // Boundary-Layer Meteorology;Aug2003, Vol. 108 Issue 2, p247 

    The dynamics of near-surface streak formation in the neutrally stratified, rotating planetary boundary layer are investigated. The purpose of this note is to compare large-eddy simulation results to theoretical predictions suggesting that streaks are associated with non-normal mode optimal...

  • Role of land-surface temperature feedback on model performance for the stable boundary layer. Holtslag, A. A. M.; Steeneveld, G. J.; van de Wiel, B. J. H. // Boundary-Layer Meteorology;Nov2007, Vol. 125 Issue 2, p361 

    At present a variety of boundary-layer schemes is in use in numerical models and often a large variation of model results is found. This is clear from model intercomparisons, such as organized within the GEWEX Atmospheric Boundary Layer Study (GABLS). In this paper we analyze how the...

  • Acceleration of the Brewer–Dobson Circulation due to Increases in Greenhouse Gases. Garcia, Rolando R.; Randel, William J. // Journal of the Atmospheric Sciences;Aug2008, Vol. 65 Issue 8, p2731 

    The acceleration of the Brewer–Dobson circulation under rising concentrations of greenhouse gases is investigated using the Whole Atmosphere Community Climate Model. The circulation strengthens as a result of increased wave driving in the subtropical lower stratosphere, which in turn...

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