Structure and Evolution of Rainfall in Numerically Simulated Landfalling Hurricanes

Kimball, Sytske K.
October 2008
Monthly Weather Review;Oct2008, Vol. 136 Issue 10, p3822
Academic Journal
Using an idealized landfalling model hurricane, the impact of different land surface characteristics on hurricane rainfall distribution before, during, and after landfall is investigated. Before landfall, maximum rainfall occurs on the right side of the storm track as a result of dry air intrusion from both the environmental flow behind the vortex and the land surface ahead of the vortex. These sources of dry air combine to destabilize the right side and stabilize the left side of the storm. Upon landfall, the rainfall maximum shifts to the left of the storm track over land, near the coast. Increased friction over land drives a region of convergence in the entire front half of the storm. While mean rainfall rates decrease, localized areas of large rainfall accumulations may occur as a result of this frictional forcing. Over land, the rainfall area broadens and mean rainfall rates decrease. No differences are detected in inner-core rainfall rates between cases, but outer-core rainfall rates and rainfall coverage increase with moister land surfaces. Hence, significant differences in rainfall accumulations occur depending on moisture availability of the land surface. Since reconnaissance planes cannot fly over land, forecasters are often forced to make extrapolations from reconnaissance data over water. They should take extreme caution in doing so, since rainfall distributions may change suddenly upon landfall as different forcing mechanisms take over.


Related Articles

  • Response to "Comment on 'Motion of a helical vortex filament in superfluid 4He under the extrinsic form of the local induction approximation"' [Phys. Fluids 26, 019101 (2014)]. Van Gorder, Robert A. // Physics of Fluids;Jan2014, Vol. 26 Issue 1, p1 

    I agree with the authors regarding their comments on the Donnelly-Glaberson instability for such helical filaments as those obtained in my paper. I also find merit in their derivation of the quantum LIA (local induction approximation) in the manner of the LIA of Boffetta et al. However, I...

  • Atlantic Subtropical Storms. Part I: Diagnostic Criteria and Composite Analysis. Evans, Jenni L.; Guishard, Mark P. // Monthly Weather Review;Jul2009, Vol. 137 Issue 7, p2065 

    Subtropical cyclones (ST) have only recently gained attention as damaging weather systems. A set of criteria for identifying and classifying these systems is introduced here and employed to identify 18 ST cases forming in the 1999–2004 hurricane seasons. To be classified as an ST, these...

  • Supersonic flows with small perturbations in the presence of external effects on the flow. II. Slender wing profile. Gerasimov, N. A.; Sukhomlinov, V. S. // Technical Physics;Jun2010, Vol. 55 Issue 6, p777 

    An analytic theory of a supersonic flow past a slender profile of an arbitrary shape in the presence of local energy release zones and an external force acting on the flow near the surface is developed. Main results are obtained using the linear approximation, which is valid in a wide range of...

  • Gale Force. Charles, Nick; Smith, Patricia B. // People;11/30/98, Vol. 50 Issue 20, p111 

    Profiles Nash Roberts, a meteorologist who predicts the path hurricanes will take along the Atlantic coast of the United States. The faith residents of the Gulf Coast have in Roberts' predictions; Methods he uses in forecasting hurricanes; Background; How Roberts became a meteorologist; Comments.

  • Quasi-hydrostatic primitive equations for ocean global circulation models. Lucas, Carine; Petcu, Madalina; Rousseau, Antoine // Chinese Annals of Mathematics;Nov2010, Vol. 31 Issue 6, p939 

    Global existence of weak and strong solutions to the quasi-hydrostatic primitive equations is studied in this paper. This model, that derives from the full non-hydrostatic model for geophysical fluid dynamics in the zero-limit of the aspect ratio, is more realistic than the classical hydrostatic...

  • Dynamics of oscillator chains from high frequency initial conditions: Comparison of [lowercase_phi_synonym]4 and FPU-β models. Lichtenberg, Allan J.; Mirnov, Vladimir V.; Day, Christopher // Chaos;Mar2005, Vol. 15 Issue 1, p015109 

    The dynamics of oscillator chains are studied, starting from high frequency initial conditions (h.f.i.c.). In particular, the formation and evolution of chaotic breathers (CB’s) of the Klein–Gordon chain with quartic nonlinearity in the Hamiltonian (the [lowercase_phi_synonym]4...

  • An analysis of prediction skill of monthly mean climate variability. Kumar, Arun; Chen, Mingyue; Wang, Wanqiu // Climate Dynamics;Sep2011, Vol. 37 Issue 5/6, p1119 

    In this paper, lead-time and spatial dependence in skill for prediction of monthly mean climate variability is analyzed. The analysis is based on a set of extensive hindcasts from the Climate Forecast System at the National Centers for Environmental Prediction. The skill characteristics of...

  • Tribospectroscopic Study of a Steel–Steel Friction Couple. Popov, V. L.; Starchevich, Ya. // Technical Physics Letters;Apr2005, Vol. 31 Issue 4, p309 

    The force of friction between a steel plate and a steel sample oscillating at a frequency of 60–70 kHz has been studied as a function of the oscillation amplitude. The static friction force rapidly decays when the oscillation amplitude increases from zero to 0.1 μm. Then, the force...

  • Force autocorrelation function in linear response theory and the origin of friction. Petravic, Janka // Journal of Chemical Physics;9/7/2008, Vol. 129 Issue 9, p094503 

    Vanishing of the equilibrium fluctuation expression for the friction coefficient of a massive particle in a finite-volume liquid has been well documented and discussed in literature. This paper investigates the decay of the friction force in the corresponding nonequilibrium situation, when the...


Read the Article


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

Try another library?
Sign out of this library

Other Topics