Index Catalog // ScholarsArchive@OSU

Air-sea heat exchange along the northern sea surface temperature front in the eastern tropical Pacific

Creator:: Thum, Nicolai
Abstract:: The atmospheric response to the oceanic forcing in the eastern Pacific along the northern equatorial sea surface temperature (SST) front is investigated in terms of sensible and latent heat flux during the 6-month period 28 July 1999 through 27 January 2000. Of particular interest is the atmospheric boundary layer (ABL)...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Nicolai Thum for the degree of

Atmospheric boundary layer coupling to midlatitude mesoscale sea surface temperature anomalies

Creator:: Thum, Nicolai
Abstract:: This thesis examines the mechanisms that couple the monthly-averaged atmospheric boundary layer (ABL) to open-ocean sea surface temperature (SST) perturbations on scales of 50-500 km. The observed positive correlation between surface wind speed anomalies and SST anomalies is successfully simulated using the Weather Research and Forecasting (WRF) model. In numerical...
Resource Type:: Dissertation
Full Text:: AN ABSTRACT OF THE DISSERTATION OF Nicolai Thum for the degree of

Air–Sea Heat Exchange along the Northern Sea Surface Temperature Front in the Eastern Tropical Pacific

Creator:: Thum, Nicolai, Esbensen, Steven K., Chelton, Dudley B., and McPhaden, Michael J.
Abstract:: The atmospheric response to the oceanic forcing in the eastern Pacific along the northern equatorial sea surface temperature (SST) front is investigated in terms of sensible and latent heat flux during the 6-month period from 28 July 1999 to 27 January 2000 and the 7-month period from 28 June 2000...
Resource Type:: Article
Full Text:: the Eastern Tropical Pacific NICOLAI THUM, STEVEN K. ESBENSEN, AND DUDLEY B. CHELTON College of

Coupling between Sea Surface Temperature and Low-Level Winds in Mesoscale Numerical Models

Creator:: Song, Qingtao, Chelton, Dudley B., Esbensen, Steven K., Thum, Nicolai, and O'Neill, Larry W.
Abstract:: This study evaluates the impacts of sea surface temperature (SST) specification and grid resolution on numerical simulations of air–sea coupling near oceanic fronts through analyses of surface winds from the European Centre for Medium-Range Weather Forecasts (ECMWF) model. The 9 May 2001 change of the boundary condition from the Reynolds...
Resource Type:: Article
Full Text:: , Oregon STEVEN K. ESBENSEN, NICOLAI THUM, AND LARRY W. O’NEILL College of Oceanic and Atmospheric

Observations of Coupling between Surface Wind Stress and Sea Surface Temperature in the Eastern Tropical Pacific

Creator:: Chelton, Dudley B., Esbensen, Steven K., Schlax, Michael G., Thum, Nicolai, Freilich, Michael H., Wentz, Frank J., Gentemann, Chelle L., McPhaden, Michael J., and Schopf, Paul S.
Abstract:: Satellite measurements of surface wind stress from the QuikSCAT scatterometer and sea surface temperature (SST) from the Tropical Rainfall Measuring Mission Microwave Imager are analyzed for the three-month period 21 July–20 October 1999 to investigate ocean–atmosphere coupling in the eastern tropical Pacific. Oceanic tropical instability waves (TIWs) with periods of...
Resource Type:: Article
Full Text:: . SCHLAX, NICOLAI THUM, AND MICHAEL H. FREILICH College of Oceanic and Atmospheric Sciences, Oregon State

Surface wind modification near mid-latitude ocean fronts : observational and dynamical analysis

Creator:: O'Neill, Larry W.
Abstract:: Interactions between surface winds and meanders in mid-latitude sea surface temperature (SST) fronts with horizontal length scales of 100-1000 km are investigated from satellite observations and numerical simulations. Observations from the Sea- Winds scatterometer on the QuikSCAT satellite show that the magnitude, direction, curl, and divergence of the surface wind...
Resource Type:: Dissertation
Full Text:: Skyllingstad, Justin Small, Qingtao Song, and Nicolai Thum are thanked for helpful discussions throughout the

Numerical Simulation of Boundary Layer Structure and Cross-Equatorial Flow in the Eastern Pacific

Creator:: Small, R. Justin, Xie, Shang-Ping, Wang, Yuqing, Esbensen, Steven K., and Vickers, Dean
Abstract:: Recent observations from spaceborne microwave sensors have revealed detailed structure of the surface flow over the equatorial eastern Pacific in the boreal fall season. A marked acceleration of surface wind across the northern sea surface temperature (SST) front of the cold tongue is a prominent feature of the regional climate....
Resource Type:: Article

A modeling study of katabatic flows

Creator:: Smith, Craig M.
Abstract:: A modeling study is undertaken to better understand the physics of katabatic flows. This study is divided into three topics; a comparison between a large eddy simulation (LES) and a mesoscale model of katabatic flows, a sensitivity study of katabatic flows to various physical parameters, and an investigation into the...
Resource Type:: Masters Thesis
Full Text:: Matheson and Nicolai Thum, for their help. I would also like to thank my family back home in San Diego

Tracer experiments in a non-uniform porous medium : implications of diffusive mass transfer on the late-time breakthrough behavior

Creator:: Freiherr von Schwerin, Claudius
Abstract:: Mass transfer processes were evaluated in an artificial, non-uniform porous medium with a power law distribution of diffusion rate coefficients obtained from physical characterization of solute and porous medium. Breakthrough curves of several pulse experiments conducted at different velocities were compared (1) to analytical expressions for concentrations at mass transfer...
Resource Type:: Masters Thesis
Full Text:: and friendship. Next, I'd like to mention Nicolai Thum. He became, what an American calls, my best

Numerical and assimilative studies of the equatorial Pacific cold tongue

Creator:: Perez, Renellys Christine
Abstract:: Numerical model and assimilation experiments were conducted in the tropical Pacific Ocean to obtain a better understanding of the processes that control the cold tongue surface mixed layer temperature balance during August 1999 to July 2004. The numerical model was first applied to test two hypotheses (asymmetric background currents and...
Resource Type:: Dissertation
Full Text:: Kessler, Jay McCreary, Ragu Murtugudde, Larry O'Neill, Tim Pugh, Michael G. Schlax, Nicolai Thum

ScholarsArchive@OSU

Air-sea heat exchange along the northern sea surface temperature front in the eastern tropical Pacific

Atmospheric boundary layer coupling to midlatitude mesoscale sea surface temperature anomalies

Air–Sea Heat Exchange along the Northern Sea Surface Temperature Front in the Eastern Tropical Pacific

Coupling between Sea Surface Temperature and Low-Level Winds in Mesoscale Numerical Models

Observations of Coupling between Surface Wind Stress and Sea Surface Temperature in the Eastern Tropical Pacific

Surface wind modification near mid-latitude ocean fronts : observational and dynamical analysis

Numerical Simulation of Boundary Layer Structure and Cross-Equatorial Flow in the Eastern Pacific

A modeling study of katabatic flows

Tracer experiments in a non-uniform porous medium : implications of diffusive mass transfer on the late-time breakthrough behavior

Numerical and assimilative studies of the equatorial Pacific cold tongue

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