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Gregory P. Byrd and Stephen K. Cox

JANUARY 1984 GREGORY P. BYRD AND STEPHEN K. COX 173A Case Study of Radiative Forcing upon a Tropical Cloud Cluster System GREGORY P. BYRD! AND STEPHEN K. COXDepartment of Atmospheric Science, Colorado State University, Fort Collins, CO 80523(Manuscript received 11 August 1982, in final form 5 August 1983)ABSTRACT Tropospheric radiative convergence profiles from Cox and Griffith are used to assess the

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Jonathan E. Martin

as the “trowal airstream.” The results of these model-based analyses have not, however, been fortified by a dynamical explanation of the relationship between the development of the thermal structure in the occluded quadrant of cyclones and the associated ascent that supports this airstream. In the present paper a quasigeostrophic (Q-G) analysis of the forcing for ascent in the occluded quadrant of three cyclones is presented based upon a partitioning of the Q vector ( Hoskins et al. 1978

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David W. Hamilton, Yuh-Lang Lin, Ronald P. Weglarz, and Michael L. Kaplan

of convective latent heating on background midlevel flow modification and determine its contribution to the development of an environment favorable for severe weather downstream from the latent heat source. A prescribed diabatic forcing in a simple three-dimensional primitive equation model ( Weglarz 1994 ; Lin and Jao 1995 ; Wang et al. 1996 ) appears to be useful to represent latent heat release experienced in the real atmosphere during deep convective events. Theoretical studies ( Lin and

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Ronald Gelaro and Ronald M. Errico

470 MONTHLY WEATHER REVIEW VOLUM-121The Forcing and Balance of Zonally Symmetric Modes in a Global Model RONALD GELARO Naval Research Laboratory, Monterey, California RONALD M. ERRICONational Center for Atmospheric Research, Boulder, Colorado(Manuscript received 2 February 1992, in final form 27 May 1992)ABSTRACT The temporal behavior of the

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Alan R. Shaffer and Russell L. Elsberry

DECEMBER 1982 ALAN R. SHAFFER AND RUSSELL L. ELSBERRY 1945A Statistical-Climatological Tropical Cyclone Track Prediction Technique Using an EOF Representation of the Synoptic Forcing ALAN R. SHAFFER AND RUSSELL L. ELSBERRYDepartment of Meteorology, Naval Postgraduate School, Monterey, CA 93940(Manuscript received 15 April 1982, in final form 13 August 1982)ABSTRACT An empirical orthogonal

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K. M. Lau and J. S. Boyle

400 MONTHLY WEATHER REVIEW VOLUM-11~Tropics! and Extratropical Forcing of the Large-Scale Circulation: A Diagnoktic Study K. M. LAULaboratory for Atmospheres, NA$.4/Goddard Space Flight Center, Greenbelt, MD 20771Department of Meteorology, Naval Postgraduate School, Monterey, CA 93945 (Manuscript received 10 October 1985, in final form 8 August 1986) Seasonal anomalies in the large

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UDC M1.611.3:M1.~.21:B1.816.11:~2.~~5"1~.12.~")Analysis of the Mean Forcing Fields SimulatedBy the Two-level, Mintt-Arakawa Atmospheric ModelW. LAWRENCE GATES-The Rand Corporation, Santa Monica, Calif.ABSTRACT-The global distributions of the mean Janu-ary surface wind stress, the net diabatie heating rate,and the net rate of moisture addition as simulated in a?+day integration with the two-level, Jlintz-Arakawaatmospheric general circulation model are presented. Thelatitudinal dist,ributions of

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Kevin Hamilton

VOL. 109, NO. I MONTHLY WEATHER REVIEW January 1981Latent Heat Release as a Possible Forcing Mechanism for Atmospheric Tides KEVIN HAMILTONGeophysical Fluid Dynamics Program, Princeton University, Princeton. NJ 08540(Manuscript received 17 December 1979, in final form 25 July 1980) ABSTRACT The consequences of the hypothesis of Lindzen (1978) that latent heat release may be a

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Juan Carlos Jusem and Robert Atlas

in the natural coordinate system that follows the geostrophic wind. The rationale for this choice lies in the possibility of relating the Q vector at any given point to the geometrical and kinematical properties of the geostrophic flow in the neighborhood of that point. This relationship, unobtainable from the previously mentioned modes of partitioning, allows a quantitative evaluation of conventional idealized models of vertical motion forcing, even for real synoptic situations. These

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Chantal Rivest, Andrew Staniforth, and André Robert

366 MONTHLY WEATHER REVIEW VOLUME122Spurious Resonant Response of Semi-Lagrangian Discretizations to Orographic Forcing: Diagnosis and SolutionCHANTAL RIVEST AND ANDREW STANIFORTHRecherche en prOvision num~rique. Service de I'environnement atmosphdrique, Dorval, Quebec. CanadaANDRP. ROBERTD~partement de physique, Universitd du Quebec d Montreal, Montreal, Quebec, Canada(Manuscript received 7 May 1993

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