Index Catalog // ScholarsArchive@OSU

Formulation of Turbulent Fluxes in the Stable Boundary Layer

Creator:: Mahrt, L. and Vickers, Dean
Abstract:: The mixing lengths for heat and momentum are computed from seven levels of eddy correlation data during the Cooperative Atmosphere–Surface Exchange Study-1999 (CASES-99). A number of formulations of the mixing length are evaluated, including surface layer similarity theory, several hybrid similarity theories, a formulation based on the Richardson number, and...
Resource Type:: Article
Full Text:: Boundary Layer. Prentice Hall, 317 pp. Stull, R. B., 1990: An Introduction to Boundary Layer Meteorology

Low-Level Wind Maxima and Structure of the Stably Stratified Boundary Layer in the Coastal Zone

Creator:: Mahrt, L., Vickers, Dean, and Andreas, Edgar L.
Abstract:: A Rutan Aircraft Factory Long-EZ aircraft flew numerous low-level slant soundings on two summer days in 2001 off the northeastern coast of the United States. The soundings are analyzed here to study the nonstationary vertical structure of the wind, temperature, and turbulence. An error analysis indicates that fluxes computed from...
Resource Type:: Article
Full Text:: Structure of the Stably Stratified Boundary Layer in the Coastal Zone. Journal of Applied Meteorology and

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:: Numerical Simulation of Boundary Layer Structure and Cross

Sensitivity of a subregional scale atmospheric inverse CO₂ modeling framework to boundary conditions

Creator:: Göckede, Mathias, Turner, David P., Michalak, Anna M., Vickers, Dean, and Law, Beverly E.
Abstract:: We present an atmospheric inverse modeling framework to constrain terrestrial biosphere CO₂ exchange processes at subregional scales. The model is operated at very high spatial and temporal resolution, using the state of Oregon in the northwestern United States as the model domain. The modeling framework includes mesoscale atmospheric simulations coupled...
Resource Type:: Article
Full Text:: boundary layer mixing biases [e.g., Peters et al., 2010], we restricted the observations used for the

The Cospectral Gap and Turbulent Flux Calculations

Creator:: Vickers, Dean and Mahrt, L.
Abstract:: An alternative method to Fourier analysis is discussed for studying the scale dependence of variances and covariances in atmospheric boundary layer time series. Unlike Fourier decomposition, the scale dependence based on multiresolution decomposition depends on the scale of the fluctuations and not the periodicity. An example calculation is presented in...
Resource Type:: Article
Full Text:: scale dependence of variances and covariances in atmospheric boundary layer time series. Unlike Fourier

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:: Boundary Layer Energy Budget (MABLEB) experiment during April 2007; and 5) the Physics Of Stratocumulus

Surface stress in offshore flow and quasi-frictional decoupling

Creator:: Mahrt, Larry, Vickers, Dean, Sun, Jielun, Crawford, Timothy L., Crescenti, Gennaro, and Frederickson, Paul
Abstract:: Aircraft data collected at approximately 15 m above the sea surface in the coastal zone are analyzed to examine the spatial distribution of surface stress. Advection of stronger turbulence from land dominates the near-surface turbulence for the first few kilometers offshore. With offshore flow of warm air over cold water,...
Resource Type:: Article
Full Text:: decreases atmospheric mixing. The redevelopment of the boundary layer farther downstream is examined

Dependence of Turbulent and Mesoscale Velocity Variances on Scale and Stability

Creator:: Mahrt, L., Moore, Erin, Vickers, Dean, and Jensen, N. O.
Abstract:: The scale dependence of velocity variances is studied using data collected from a grassland site, a heather site, and four forested sites. The dependence of velocity variances on averaging time, used to define the fluctuation quantities, is modeled. The crosswind velocity variance is emphasized, because it is more difficult to...
Resource Type:: Article
Full Text:: - tions in the nocturnal boundary layer include internal gravity waves, pulsating drainage flows (Doran

Evaluation of the air-sea bulk formula and sea-surface temperature variability from observations

Creator:: Vickers, Dean and Mahrt, Larry
Abstract:: Eddy‐correlation fluxes are compared to air‐sea fluxes predicted by a widely used bulk flux formulation without wave‐state effects. Systematic discrepancies are found. For example, the model approximately equates the roughness lengths for heat and moisture; however, the observed roughness length for heat (zoh) exceeds that for moisture (zoq) by an...
Resource Type:: Article
Full Text:: marine boundary layer, submitted to Boundary Layer Meteorology, 2006). 7. Conclusions [59] A bulk flux

Sea-surface aerodynamic roughness

Creator:: Mahrt, Larry, Vickers, Dean, Fredrickson, Paul, Davidson, Ken, and Smedman, Ann-Sofi
Abstract:: This study surveys and evaluates similarity theory for estimating the sea-surface drag coefficient with the bulk aerodynamic method. The most commonly used formulations of the aerodynamic roughness length, required by similarity theory, are examined using data sets from four different field programs. These relationships include the Charnock formulation and the...
Resource Type:: Article
Full Text:: : Air/sea interactions (0312); 3307 Meteorology and Atmospheric Dynamics: Boundary layer processes

ScholarsArchive@OSU

Formulation of Turbulent Fluxes in the Stable Boundary Layer

Low-Level Wind Maxima and Structure of the Stably Stratified Boundary Layer in the Coastal Zone

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

Sensitivity of a subregional scale atmospheric inverse CO₂ modeling framework to boundary conditions

The Cospectral Gap and Turbulent Flux Calculations

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

Surface stress in offshore flow and quasi-frictional decoupling

Dependence of Turbulent and Mesoscale Velocity Variances on Scale and Stability

Evaluation of the air-sea bulk formula and sea-surface temperature variability from observations

Sea-surface aerodynamic roughness

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