Lakshmi Kantha

NATO Centre for Maritime Research and Experimentation

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Tyler Mixa

G & A Technical Software (United States)

Thomas Lund

G & A Technical Software (United States)

B. Laughman

G & A Technical Software (United States)

David C. Fritts

G & A Technical Software (United States)

Ranjit M. Passi

Stennis Space Center

Steve Piacsek

United States Navy

D. C. Fritts

G & A Technical Software (United States)

C. A. Clayson

Woods Hole Oceanographic Institution

Hubert Luce

Haruka Nakano

Kyushu University

Cooperative Institutions

University of Colorado Boulder

G & A Technical Software (United States)

Kyoto University

Stennis Space Center

Embry–Riddle Aeronautical University

Northwest Research Associates

University of Colorado System

Research Institute for Sustainable Humanosphere

United Nations University Institute for Sustainability and Peace

John Wiley & Sons (United States)

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Humidity Gradient Sheets Between a Cloud Top and a Dry Layer Intrusion Above

Japan Geoscience Union (2020)

Lakshmi Kantha Hubert Luce Dale Lawrence Hiroyuki Hashiguchi Masanori Yabuki

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Verification and Calibration of an Eddy-Resolving Model of the Gulf of Mexico

James K. Lewis Lakshmi Kantha Artemio Gallegos Ranjit M. Passi

Abstract : Techniques for verifying and calibrating an eddy-resolving ocean circulation model have been applied to a model of the Gulf of Mexico (GOM). Various kinematic parameters were calculated using drifter data from GOM Loop Current eddies, and from indices of rotational period versus eddy age and swirl velocity versus distance the eddy center were determined. The observed kinematics were then compared to the same parameters calculated from a model eddy. Although the model can simulate the movement and translation velocities of actual Gulf of Mexico eddies, it does not reproduce the interior flow characteristics of such eddies. In particular, the period of rotation about the center of a model eddy is considerably different from what is observed. The first attempt at calibrating the model was the development of more realistic inflow conditions in the Yucatan Straits. A variety of data sets were synthesized to produce the two-dimensional distributions of temperature, salinity, density, and northward velocity as well as the east-west variations of surface height. The data of Cooper et al. (1990) was used to specify the vertical velocity profile while the results of Hall (1989) were used to specify the horizontal structure of the flow field.

Drifter

Eddy

Inflow

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Evaluating the Accuracy of Gravity Wave Simulations in the MLT with Artificially-Constrained Reynolds Numbers

AGUFM (2018)

Tyler Mixa David C. Fritts Thomas Lund Lakshmi Kantha

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Improving the Skill of Ocean Mixed Layer Models

Lakshmi Kantha

Mixed layer

10.21236/ada629471

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Estimating eddy diffusivities in the ocean

Japan Geoscience Union (2017)

Lakshmi Kantha Haruka Nakano Jiro Yoshida

Eddy diffusion

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Fine Structure Influences on Gravity Wave Propagation in the Mesosphere and Lower Thermosphere

AGU Fall Meeting Abstracts (2016)

Tyler Mixa D. C. Fritts B. Laughman L. Wang Thomas Lund

Mesopause

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BOUNDARY LAYERS | Ocean Mixed Layer

Elsevier eBooks (2003)

Lakshmi Kantha C. A. Clayson

Mixed layer

10.1016/b0-12-227090-8/00093-2

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Computational Ocean Modeling.

Lakshmi Kantha Steve Piacsek

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Citations (8)

Hurricane Camille Shelf Wave Simulation Using a Numerical Ocean Circulation Model

Estuarine and Coastal Modeling (1992)

Le Ngoc Ly Lakshmi Kantha

The hurricane generated shelf waves for Hurricane Camille (1969) are studied using a three-dimensional, thermodynamical, primitive equation, ocean circulation model developed at Princeton University. The model has free surface dynamics and a second order turbulence closure scheme for the mixed layer. The model has a sigma coordinate with 18 levels in the vertical and 0.2 by 0.2 degree horizontal resolution for the entire Gulf of Mexico. A realistic coastline and bottom topography are used in the study. The model is forced by the passage of the hurricane across the Gulf. Both the sea level data and numerical simulations of the shelf currents show a clear signature of continental shelf waves generated by Hurricane Camille. The study shows that shelf wave phase speeds determined from sea level data, and from the model currents have almost the same values. The shelf waves propagated to the west with a phase speed of 8 - 13 m s -1 . The study also shows that shelf waves mainly appear in the well mixed surface layer where shear is small.

Mixed layer

Horizontal resolution

Closure (psychology)

Circulation (fluid dynamics)

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Characterizing High Frequency Gravity Wave Propagation Through an Evolving Inertial Wave in the MLT

EGU General Assembly Conference Abstracts (2018)

Tyler Mixa Katrina Bossert David C. Fritts B. Laughman Thomas Lund

Inertial wave

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