Robert McGraw
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Geometry of Non-Diffusive Tracer Transport in Gridded Atmospheric Models Open
A first-order linear and numerically non-diffusive Eulerian transport algorithm, minVAR, was recently developed for preservation of correlations between interrelated tracers during advective transport. The present study extends this work b…
Community Input on the Need, Scope, and Development Roadmap of a Proposed National Virtual Biosecurity for Bioenergy Crops Center (NVBBCC) Open
Brookhaven National Laboratory (BNL) was awarded a pilot project in FY22 under the U.S. Department of Energy (DOE) Office of Science Biopreparedness Research Virtual Environment (BRaVE) initiative, to define research priorities, needs, and…
View article: FY 2010 Fourth Quarter Report: Evaluation of the Dependency of Drizzle Formation on Aerosol Properties
FY 2010 Fourth Quarter Report: Evaluation of the Dependency of Drizzle Formation on Aerosol Properties Open
Metric for Quarter 4: Report results of implementation of composite parameterization in single-column model (SCM) to explore the dependency of drizzle formation on aerosol properties. To better represent VOCALS conditions during a test fli…
Preserving Tracer Correlations in Moment‐Based Atmospheric Transport Models Open
A linear non‐diffusive algorithm for advective transport is developed that greatly improves the detail at which aerosols and clouds can be represented in atmospheric models. Linear advection schemes preserve tracer correlations but the mos…
Preserving tracer correlations in atmospheric transport models Open
A linear non-diffusive algorithm for advective transport is developed that greatly improves the level of detail at which aerosols and clouds can be represented in atmospheric models.Linear advection schemes preserve tracer correlations but…
Codes used in Preservation of tracer correlations in atmospheric transport models Open
Mathematica file, and pdf of the same, used in article " Preservation of tracer correlations in atmospheric transport models" submitted to JAMES
Codes used in Preservation of tracer correlations in atmospheric transport models Open
Mathematica file, and pdf of the same, used in article " Preservation of tracer correlations in atmospheric transport models" submitted to JAMES
Codes used in Preservation of tracer correlations in atmospheric transport models Open
Mathematica file, and pdf of the same, used in article " Preservation of tracer correlations in atmospheric transport models" submitted to JAMES
Comment on egusphere-2022-826 Open
Abstract. Ultrafine aerosol particles with sizes smaller than 50 nm have been shown in recent studies to serve as a large source of cloud condensation nuclei (CCN) that can promote additional cloud droplet formation under supersaturation c…
Large‐Eddy Simulations of a Convection Cloud Chamber: Sensitivity to Bin Microphysics and Advection Open
Bin microphysics schemes are useful tools for cloud simulations and are often considered to provide a benchmark for model intercomparison. However, they may experience issues with numerical diffusion, which are not well quantified, and the…
Viral Fate and Transport for COVID-19 Open
The NVBL Viral Fate and Transport Team includes researchers from eleven DOE national laboratories and is utilizing unique experimental facilities combined with physics-based and data-driven modeling and simulation to study the transmission…
Surfactants and cloud droplet activation: A systematic extension of Köhler theory based on analysis of droplet stability Open
The activation of aerosol particles to form cloud droplets, a necessary first step in cloud formation, controls much of the impact that aerosols have on clouds and climate. Recently, there has been a surge of interest in extending the Köhl…
A new approach to estimate supersaturation fluctuations in stratocumulus cloud using ground-based remote-sensing measurements Open
Supersaturation, crucial for cloud droplet activation and condensational growth, varies in clouds at different spatial and temporal scales. In-cloud supersaturation is poorly known and rarely measured directly. On the scale of a few tens o…
A new approach to estimate supersaturation fluctuations in stratocumulus cloud using ground-based remote sensing measurements Open
Supersaturation, crucial for cloud droplet activation and condensational growth, varies in clouds at different spatial and temporal scales. In-cloud supersaturation is poorly known and rarely measured directly. On the scale of a few tens o…
A unifying identity for the work of cluster formation in heterogeneous and homogeneous nucleation theory Open
A unifying identity is derived relating the reversible work of cluster formation (W) and its molecular number content (n) and surface work (Φ) components, each ratioed to the corresponding values for a spherical capillary drop of critical …
Evaluation of Inga edulis and I samanensis for firewood and greenmulch production in an organic maize alleycroppingpractice in the humid tropics 17 Open
Ideally, a tree species used in alley cropping should create a suitable micro-environment for the companion crop and provide additional income. Inga edulis and I. samanensis were evaluated for firewood and green mulch production in an orga…
FY 2010 Third Quarter Report Comparison of Aerosol and Cloud Condensation Nuclei (CCN) Relationship Parameterizations with Data Collected During the 2008 VAMOS Ocean-Cloud-Atmosphere Land Study (VOCALS) Field Campaign Open
Metric for Quarter 3: Report comparisons of aerosol/CCN relationship parameterizations with data collected in the first quarter and best parameterization for VOCALS data set.
Planning the Next Decade of Coordinated Research to Better Understand and Simulate Marine Low Clouds Open
Seventeen experts from communities focused on improving understanding and 6 modeling of processes controlling marine low clouds met to discuss future research 7 directions.