Index Catalog // ScholarsArchive@OSU

Estimates of the 10-m Neutral Sea Surface Drag Coefficient from Aircraft Eddy-Covariance Measurements

Creator:: Vickers, Dean, Mahrt, Larry, and Andreas, Edgar L.
Abstract:: The 10-m neutral drag coefficient (C[subscript DN10]) over the sea is calculated using a large observational dataset consisting of 5800 estimates of the mean flow and the fluxes from aircraft eddy-covariance measurements. The dataset includes observations from 11 different experiments with four different research aircraft. One of the goals is...
Resource Type:: Article
Full Text:: , Corvallis, Oregon LARRY MAHRT Northwest Research Associates (Seattle Division), Corvallis, Oregon EDGAR L

Formulation of the Sea Surface Friction Velocity in Terms of the Mean Wind and Bulk Stability

Creator:: Vickers, Dean, Mahrt, Larry, and Andreas, Edgar L.
Abstract:: Over 5000 aircraft eddy-covariance measurements from four different aircraft in nine different experiments are used to develop a simple model for the friction velocity over the sea. Unlike the widely used Coupled Ocean–Atmosphere Response Experiment (COARE) bulk flux scheme, the simple model (i) does not use Monin–Obukhov similarity theory (MOST)...
Resource Type:: Article
Full Text:: State University, Corvallis, Oregon LARRY MAHRT Northwest Research Associates, Redmond, Washington

A new drag relation for aerodynamically rough flow over the ocean

Creator:: Andreas, Edgar L., Mahrt, Larry, and Vickers, Dean
Abstract:: From almost 7000 near-surface eddy-covariance flux measurements over the sea, the authors deduce a new air–sea drag relation for aerodynamically rough flow: u* = 0.0583Uₙ₁₀ 2 0.243. Here u* is the measured friction velocity, and Uₙ₁₀ is the neutral-stability wind speed at a reference height of 10 m. This relation...
Resource Type:: Article
Full Text:: LARRY MAHRT NorthWest Research Associates, Inc., Corvallis, Oregon DEAN VICKERS College of Earth

Wind and Temperature Oscillations Generated by Wave–Turbulence Interactions in the Stably Stratified Boundary Layer

Creator:: Sun, Jielun, Mahrt, Larry, Nappo, Carmen, and Lenschow, Donald H.
Abstract:: The authors investigate atmospheric internal gravity waves (IGWs): their generation and induction of global intermittent turbulence in the nocturnal stable atmospheric boundary layer based on the new concept of turbulence generation discussed in a prior paper by Sun et al. The IGWs are generated by air lifted by convergence forced...
Resource Type:: Article
Full Text:: Generated by Wave–Turbulence Interactions in the Stably Stratified Boundary Layer Sun, J., Mahrt, L

Estimating the Bowen ratio over the open and ice-covered ocean

Creator:: Andreas, Edgar L., Jordan, Rachel E., Mahrt, Larry, and Vickers, Dean
Abstract:: The Bowen ratio, the ratio of the turbulent surface fluxes of sensible (Hₛ) and latent (Hₗ) heat, Bo ≡ Hₛ/Hₗ, occurs throughout micrometeorology. It finds application in the Bowen ratio and energy budget method, where it provides both turbulent heat fluxes when only the available energy at the surface is...
Resource Type:: Article
Full Text:: open and ice-covered ocean Edgar L Andreas,1 Rachel E. Jordan,2 Larry Mahrt,3 and Dean Vickers4

Turbulence Regimes and Turbulence Intermittency in the Stable Boundary Layer during CASES-99

Creator:: Sun, Jielun, Mahrt, Larry, Banta, Robert M., and Pichugina, Yelena L.
Abstract:: An investigation of nocturnal intermittent turbulence during the Cooperative Atmosphere Surface Exchange Study in 1999 (CASES-99) revealed three turbulence regimes at each observation height: 1) regime 1, a weak turbulence regime when the wind speed is less than a threshold value; 2) regime 2, a strong turbulence regime when the...
Resource Type:: Article
Full Text:: , Boulder, Colorado LARRY MAHRT Oregon State University, Corvallis, Oregon ROBERT M. BANTA AND YELENA L

The Relationships among Wind, Horizontal Pressure Gradient, and Turbulent Momentum Transport during CASES-99

Creator:: Sun, Jielun, Lenschow, Donald H., Mahrt, Larry, and Nappo, Carmen
Abstract:: Relationships among the horizontal pressure gradient, the Coriolis force, and the vertical momentum transport by turbulent fluxes are investigated using data collected from the 1999 Cooperative Atmosphere-Surface Exchange Study (CASES-99). Wind toward higher pressure (WTHP) adjacent to the ground occurred about 50% of the time. For wind speed at 5...
Resource Type:: Article
Full Text:: National Center for Atmospheric Research, Boulder, Colorado LARRY MAHRT Oregon State University

Quality Control and Tilt Correction Effects on the Turbulent Fluxes Observed at an Ocean Platform

Creator:: Oh, Hyun-Mi, Kim, Kyung-Eak, Ha, Kyung-Ja, Mahrt, Larry, and Shim, Jae-Seol
Abstract:: This study investigates atmospheric factors influencing the quality and the postprocessing (e.g., tilt correction) of fast-response measurements of turbulent fluxes for difficult open-sea measurements over an offshore platform. The data were collected at the Ieodo Ocean Research Station over the Yellow Sea during the period from 5 November 2007 to...
Resource Type:: Article
Full Text:: System, Pusan National University, Busan, South Korea LARRY MAHRT College of Oceanic and Atmospheric

Numerical Prediction of Submesoscale Flow in the Nocturnal Stable Boundary Layer over Complex Terrain

Creator:: Seaman, Nelson L., Gaudet, Brian J., Stauffer, David R., Mahrt, Larry, Richardson, Scott J., Zielonka, Jeffrey R., and Wyngaard, John C.
Abstract:: Numerical weather prediction models often perform poorly for weakly forced, highly variable winds in nocturnal stable boundary layers (SBLs). When used as input to air-quality and dispersion models, these wind errors can lead to large errors in subsequent plume forecasts. Finer grid resolution and improved model numerics and physics can...
Resource Type:: Article
Full Text:: , Pennsylvania LARRY MAHRT College of Oceanic and Atmospheric Sciences, Oregon State University, Corvallis

The Nature, Theory, and Modeling of Atmospheric Planetary Boundary Layers

Creator:: Baklanov, Alexander A., Grisogono, Branko, Bornstein, Robert, Mahrt, Larry, Zilitinkevich, Sergej S., Taylor, Peter, Larsen, Soren E., Rotach, Mathias W., and Fernando, H. J. S.
Abstract:: No Abstract Available.
Resource Type:: Article
Full Text:: Bornstein, larry Mahrt, serGej s. Zilitinkevich, Peter taylor, søren e. larsen, Mathias W. rotach, and h

ScholarsArchive@OSU

Estimates of the 10-m Neutral Sea Surface Drag Coefficient from Aircraft Eddy-Covariance Measurements

Formulation of the Sea Surface Friction Velocity in Terms of the Mean Wind and Bulk Stability

A new drag relation for aerodynamically rough flow over the ocean

Wind and Temperature Oscillations Generated by Wave–Turbulence Interactions in the Stably Stratified Boundary Layer

Estimating the Bowen ratio over the open and ice-covered ocean

Turbulence Regimes and Turbulence Intermittency in the Stable Boundary Layer during CASES-99

The Relationships among Wind, Horizontal Pressure Gradient, and Turbulent Momentum Transport during CASES-99

Quality Control and Tilt Correction Effects on the Turbulent Fluxes Observed at an Ocean Platform

Numerical Prediction of Submesoscale Flow in the Nocturnal Stable Boundary Layer over Complex Terrain

The Nature, Theory, and Modeling of Atmospheric Planetary Boundary Layers

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