Index Catalog // ScholarsArchive@OSU

The Consistent Parameterization of the Effects of Cumulus Clouds on the Large-Scale Momentum and Vorticity Fields

Creator:: Esbensen, Steven K., Shapiro, Lloyd J., and Tollerud, Edward I.
Abstract:: A physical and mathematical framework for the mutually consistent parameterization of the effects of cumulus convection on the large-scale momentum and vorticity fields is proposed. The key to achieving consistency is the understanding that the vorticity dynamics of the clouds below the spatial resolution of a large-scale dynamical model may...
Resource Type:: Article

Subgrid Surface Fluxes in Fair Weather Conditions during TOGA COARE: Observational Estimates and Parameterization

Creator:: Vickers, Dean and Esbensen, Steven K.
Abstract:: Bulk aerodynamic formulas are applied to meteorological data from low-altitude aircraft flights to observational estimates of the subgrid enhancement of momentum, sensible heat, and latent heat the atmospheric–oceanic boundary in light wind, fair weather conditions during TOGA COARE Global Atmosphere Coupled Ocean–Atmosphere Response Experiment). Here, subgrid enhancement the contributions of...
Resource Type:: Article
Full Text:: TOGA COARE: Observational Estimates and Parameterization DEAN VICKERS AND STEVEN K. ESBENSEN College

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
Full Text:: Earth Science and Technology, University of Hawaii, Honolulu, Hawaii STEVEN K. ESBENSEN AND DEAN

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

A Modeling Study of Summertime East Pacific Wind-Induced Ocean–Atmosphere Exchange in the Intraseasonal Oscillation

Creator:: Maloney, Eric D. and Esbensen, Steven K.
Abstract:: Intraseasonal precipitation variability over the northeast Pacific warm pool during June–October in the National Center for Atmospheric Research Community Atmosphere Model 2.0.1 with a relaxed Arakawa–Schubert convection parameterization is found to be strongly sensitive to wind-induced variations in surface latent heat flux. A control simulation with interactive surface fluxes produces...
Resource Type:: Article
Full Text:: –Atmosphere Exchange in the Intraseasonal Oscillation ERIC D. MALONEY AND STEVEN K. ESBENSEN College of

The Amplification of East Pacific Madden–Julian Oscillation Convection and Wind Anomalies during June–November

Creator:: Maloney, Eric D. and Esbensen, Steven K.
Abstract:: Madden–Julian oscillation (MJO) wind and convection anomalies are locally amplified over the northeast Pacific warm pool during June–November. Composite analysis using NCEP reanalysis data indicates that perturbation available potential energy (PAPE) production through the positive correlation of intraseasonal temperature and convective diabatic heating anomalies supports the local intensification of MJO-related...
Resource Type:: Article
Full Text:: clim_16_2204.3482_3497.tp 3482 VOLUME 16J O U R N A L O F C L I M A T E

Satellite and Buoy Observations of Boreal Summer Intraseasonal Variability in the Tropical Northeast Pacific

Creator:: Maloney, Eric D. and Esbensen, Steven K.
Abstract:: Tropical intraseasonal variability in the eastern North Pacific during June–September of 2000–03 is analyzed using satellite and buoy observations. Quick Scatterometer ocean vector winds and the Tropical Rainfall Measuring Mission (TRMM) precipitation indicate that periods of anomalous surface westerly flow over the east Pacific warm pool during a summertime intraseasonal...
Resource Type:: Article
Full Text:: Variability in the Tropical Northeast Pacific ERIC D. MALONEY AND STEVEN K. ESBENSEN College of Oceanic and

Scale Dependence of Air-Sea Fluxes over the Western Equatorial Pacific

Creator:: Sun, Jielun, Howell, James F., Esbensen, Steven K., Mahr, L., Greb, Christine M., Grossman, Robert, and LeMone, M. A.
Abstract:: The goal of this study is to examine the horizontal scale dependence of vertical eddy flux in the tropical marine surface boundary layer and how this scale dependence of flux relates to the bulk aerodynamic relationship and the parameterization of subgrid-scale flux. The fluxes of heat, moisture, and momentum are...
Resource Type:: Article

The Effects of SST-Induced Surface Wind Speed and Direction Gradients on Midlatitude Surface Vorticity and Divergence

Creator:: O'Neill, Larry W., Chelton, Dudley B., and Esbensen, Steven K.
Abstract:: The effects of surface wind speed and direction gradients on midlatitude surface vorticity and divergence fields associated with mesoscale sea surface temperature (SST) variability having spatial scales of 100–1000 km are investigated using vector wind observations from the SeaWinds scatterometer on the Quick Scatterometer (QuikSCAT) satellite and SST from the...
Resource Type:: Article
Full Text:: University, Corvallis, Oregon STEVEN K. ESBENSEN College of Oceanic and Atmospheric Sciences, Oregon State

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

ScholarsArchive@OSU

The Consistent Parameterization of the Effects of Cumulus Clouds on the Large-Scale Momentum and Vorticity Fields

Subgrid Surface Fluxes in Fair Weather Conditions during TOGA COARE: Observational Estimates and Parameterization

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

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

A Modeling Study of Summertime East Pacific Wind-Induced Ocean–Atmosphere Exchange in the Intraseasonal Oscillation

The Amplification of East Pacific Madden–Julian Oscillation Convection and Wind Anomalies during June–November

Satellite and Buoy Observations of Boreal Summer Intraseasonal Variability in the Tropical Northeast Pacific

Scale Dependence of Air-Sea Fluxes over the Western Equatorial Pacific

The Effects of SST-Induced Surface Wind Speed and Direction Gradients on Midlatitude Surface Vorticity and Divergence

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

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