Search Results

You are looking at 51 - 60 of 9,026 items for :

  • All content x
Clear All
Pi-Jaw Sheu and Ernest M. Agee

M~rt977 PI-JAW SHEU AND ERNEST M. AGEE 793Kinematic Analysis and Air-Sea Heat Flux Associated with Mesoscale Cellular Convection during AMTEX 75 ioI-JAW $1tEU AND ERNEST M. AGEEDepartment of Geosciences, Purdue University, West Lafayette, Ind. 47907(Manuscript received 28 June 1976, in revised form 30 November 1976) ABSTRACT Several excellent

Full access
James P. Kossin and Matthew D. Eastin

motivation for the present study is threefold. 1) By employing flight-level data, we can observe changes in the radial structure of the thermodynamic fields across the hurricane eye and eyewall. 2) The availability of flight-level wind data allows observation of changes in the radial profiles of kinematic and dynamic variables. 3) We present evidence that horizontal mixing between the eye and eyewall may explain the observed evolution of the thermodynamic and kinematic fields. In section 2a , we

Full access
Laurie G. Hermes

JULY 1991 LAURIE G. HERMES 1693Comparisons of Rawinsonde-deduced Kinematic and Thermodynamic Quantities with Those Deduced from VHF Profiler Observations LAURIE G. HERMES NOAA, Environmental Research Laboratories, National Severe Storms Laboratory, Norman, Oklahoma (Manuscript received 29 December 1989, in final form 2 January 1991) ABSTRACT

Full access
Hsi-Chyi Yeh, George Tai-Jen Chen, and W. Timothy Liu

limited observations. With the launch of the National Aeronautics and Space Administration's (NASA) Quick Scatterometer (QuikSCAT) satellite in June 1999, the retrieved ocean surface winds are available. Based on QuikSCAT oceanic winds, a heavy rainfall event over Taiwan associated with the passage of a mei-yu front during 11–12 June 2000 was chosen to further study the kinematic characteristics of a mei-yu front over the ocean near Taiwan. 2. Data and analyses QuikSCAT surface winds over ocean and

Full access
A. Protat, Y. Lemaitre, and G. Scialom

of these VAD-like analyses, compared to the methods devoted to the three-dimensional wind field retrieval from ground-based radar data, results from the fact that they process a great amount of data in the mesoscale area sampled by the radar, leading to a very good accuracy of the diagnosed kinematic parameters, in particular the vertical air velocity (accurate to within 10 cm s −1 ) at mesoscale. However, ground-based Doppler radars do not allow a global description of precipitating systems or a

Full access
Amy S. Bower

JANUARY 1991 NOTES AND CORRESPONDENCE 173 NOTES AND CORRESPONDENCEA Simple Kinematic Mechanism for Mixing Fluid Parcels across a Meandering Jet* AMY S. BOWER Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 13 November 1989 and 16 July 1990 ABSTRACT Recent observations of fluid pamel pathways in the

Full access
Axel Seifert and Bjorn Stevens

anew, in a somewhat more dynamic context, as well as to explore bulk relationships that may emerge on the scale of individual clouds or cloud drafts. Our approach is to use a hierarchy of microphysical models in a simplified (kinematic) dynamical framework. The microphysical models range from a discretized form of the spectral formulation, the bin microphysics model, to a two-moment bulk scheme. The latter helps to identify key parameters to include in subsequent theoretical investigations of the

Full access

UDC 661601.76:81.M8.2:661.611.2:661.W9.312On the Estimation of Kinematic Parameters in theAtmosphere From Radiosonde Wind DataHARRISON CHIEN and PHILLIP J. SMITH *--Department of Geosciences,Purdue University, Lafayette, Ind.ABSTRACT-A technique is proposed for computinghorizontal velocity divergence and the vertical componentof vorticity from radiosonde wind data. Utilizing a quad-ratic Taylor's series representation of the horizontal windfield, one can consider nonlinear variations in the

Full access
Casey B. Griffin, David J. Bodine, and Robert D. Palmer

have focused primarily on single radar representations of the TDS, little work has been done to document the two- and three-dimensional wind field associated with a large, heterogeneous TDS using two radars. The use of dual-Doppler-derived data may provide insight into some of the kinematic processes that have been hypothesized in prior literature that utilized single-Doppler radar data. Further details regarding the 10 May 2010 outbreak can be found in Palmer et al. (2011) . 2. Methods a. Radar

Full access
Roy M. Endlich

Oc~omm 1967 ROY M. ENDLICH 837An Iterative Method for Altering the Kinematic Properties of Wind Fields~ RoY M. ENDLICItStanford Research Institute, Menlo Park, Calif.(Manuscript received 3 March 1967, in revised form 10 May 1967)ABSTRACT Grid-point values of eastward and northward wind components imply that specific fields of divergence,vorticity and deformation exist. For certain

Full access