Search Results - "Freire, Livia S."

Fine dust emissions from active sands at coastal Oceano Dunes, California by Huang, Yue, Kok, Jasper F, Martin, Raleigh L, Swet, Nitzan, Katra, Itzhak, Gill, Thomas E, Reynolds, Richard L, Freire, Livia S

“…Sand dunes and other active sands generally have a low content of fine grains and, therefore, are not considered to be major dust sources in current climate…”
Get full text

In situ particle sampling relationships to surface and turbulent fluxes using large eddy simulations with Lagrangian particles by Park, Hyungwon John, Reid, Jeffrey S, Freire, Livia S, Jackson, Christopher, Richter, David H

“…Source functions for mechanically driven coarse-mode sea spray and dust aerosol particles span orders of magnitude owing to a combination of physical…”
Get full text

Downward transport of ozone rich air and implications for atmospheric chemistry in the Amazon rainforest by Gerken, Tobias, Wei, Dandan, Chase, Randy J., Fuentes, Jose D., Schumacher, Courtney, Machado, Luiz A.T., Andreoli, Rita V., Chamecki, Marcelo, Ferreira de Souza, Rodrigo A., Freire, Livia S., Jardine, Angela B., Manzi, Antonio O., Nascimento dos Santos, Rosa M., von Randow, Celso, dos Santos Costa, Patrícia, Stoy, Paul C., Tóta, Julio, Trowbridge, Amy M.

“…From April 2014 to January 2015, ozone (O3) dynamics were investigated as part of GoAmazon 2014/5 project in the central Amazon rainforest of Brazil. Just…”
Get full text

Large-Eddy Simulation of the Atmospheric Boundary Layer with Near-Wall Resolved Turbulence by Freire, Livia S.

“…In this study, a large-eddy simulation (LES) code with the one-dimensional turbulence (ODT) wall model is tested for the simulation of the atmospheric boundary…”
Get full text

Large-Eddy Simulation of smooth and rough channel flows using a one-dimensional stochastic wall model by Freire, Livia S., Chamecki, Marcelo

“…In this study a stochastic wall model based on the “large-eddy” version of the One-Dimensional Turbulence (ODT) model was developed for Large-Eddy Simulation…”
Get full text

Atmospheric Small-Scale Turbulence from Three-Dimensional Hot-film Data by Freire, Livia S., Chamecki, Marcelo, Patton, Edward G.

“…The behavior of small-scale atmospheric turbulence is investigated using the three-dimensional Canopy Horizontal Array Turbulence Study hot-film data. The…”
Get full text

A TKE‐Based Framework for Studying Disturbed Atmospheric Surface Layer Flows and Application to Vertical Velocity Variance Over Canopies by Chamecki, Marcelo, Dias, Nelson L., Freire, Livia S.

“…We propose an approach to study disturbed surface layer flows based on a simplified form of the turbulent kinetic energy (TKE) budget equation (the reduced TKE…”
Get full text

Critical flux Richardson number for Kolmogorov turbulence enabled by TKE transport by Freire, Livia S., Chamecki, Marcelo, Bou‐Zeid, Elie, Dias, Nelson L.

“…In stably stratified flows, the flux Richardson number Ri f is a measure of the ratio between buoyancy destruction and shear production of turbulent kinetic…”
Get full text

Effects of Path Averaging in a Sonic Anemometer on the Estimation of Turbulence-Kinetic-Energy Dissipation Rates by Freire, Livia S., Dias, Nelson L., Chamecki, Marcelo

“…The turbulence-kinetic-energy dissipation rate is a fundamental property in turbulent flows, but its direct measurement in the atmospheric surface layer is…”
Get full text

Predicting Vertical Concentration Profiles in the Marine Atmospheric Boundary Layer With a Markov Chain Random Walk Model by Park, Hyungwon John, Sherman, Thomas, Freire, Livia S., Wang, Guiquan, Bolster, Diogo, Xian, Peng, Sorooshian, Armin, Reid, Jeffrey S., Richter, David H.

“…In an effort to better represent aerosol transport in mesoscale and global‐scale models, large eddy simulations (LES) from the National Center for Atmospheric…”
Get full text

Parameterized Vertical Concentration Profiles for Aerosols in the Marine Atmospheric Boundary Layer by Nissanka, Indrajith D., Park, Hyungwon John, Freire, Livia S., Chamecki, Marcelo, Reid, Jeffrey S., Richter, David H.

“…Information about sea spray aerosol particle transport and their vertical distribution in the marine atmospheric boundary layer (MABL) is important in marine…”
Get full text

Residual layer effects on the modeling of convective boundary layer growth rates with a slab model using FIFE data by Freire, Livia S., Dias, Nelson L.

“…The ability of slab models for the growth of the convective boundary layer (CBL) to work in the presence of residual layers above is analyzed in detail with a…”
Get full text

A one-dimensional stochastic model of turbulence within and above plant canopies by Freire, Livia S., Chamecki, Marcelo

“…•A stochastic 1D model of turbulence in plant canopies is developed and tested.•Model reproduces mean velocity, scalar concentration, and flux profiles…”
Get full text

A TKE-Based Framework for Studying Disturbed Atmospheric Surface Layer Flows and Application to Vertical Velocity Variance Over Canopies by Chamecki, Marcelo, Dias, Nelson L., Freire, Livia S.

“…We propose an approach to study disturbed surface layer flows based on a simplified form of the turbulent kinetic energy (TKE) budget equation (the reduced TKE…”
Get full text