A5076340473- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Oil Spill Detection and Mitigation
- Aeolian processes and effects
- Air Quality Monitoring and Forecasting
- Particle Dynamics in Fluid Flows
- Aerosol Filtration and Electrostatic Precipitation
- Cyclone Separators and Fluid Dynamics
- Laser-induced spectroscopy and plasma
- Conservation Techniques and Studies
- Electrostatics and Colloid Interactions
- Marine and coastal plant biology
- Building materials and conservation
- Planetary Science and Exploration
- 3D Surveying and Cultural Heritage
- Plant Surface Properties and Treatments
- Fluid Dynamics and Mixing
- Catalytic Processes in Materials Science
- Marine and coastal ecosystems
Cascades (Canada)
2024
North Carolina State University
2014-2021
Universities Space Research Association
2020
Langley Research Center
2020
University of North Carolina at Charlotte
2016
Abstract Lidar retrievals of aerosol extinction and collocated relative humidity (RH) were acquired during the Department Energy Combined High Spectral Resolution (HSRL) Raman Measurement Study campaign in summer 2015 at Southern Great Plains site northern Oklahoma. Measurements hygroscopic properties aerosols are crucial for accurately representing their relationship with clouds, which can be a significant source uncertainty assessing direct indirect radiative effects. The ability lidar to...
Abstract. Retrievals of aerosol optical depth (AOD) from the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) satellite sensor require assumption extinction-to-backscatter ratio, also known as lidar ratio. This paper evaluates a new method to calculate ratio marine aerosols using two independent sources: AOD Synergized Optical Depth Aerosols (SODA) project and integrated attenuated backscatter CALIOP. With this method, particulate can be derived for individual CALIOP retrievals in...
Abstract Knowledge of the physical characteristics and chemical composition marine organic aerosols is needed for quantification their effects on cloud microphysical processes solar radiative transfer. Here we use xanthan gum (XG)—a bacterial biopolymer—as a proxy hydrogels. Measurements were performed pure XG particles mixtures with sodium chloride, calcium nitrate, carbonate. The aerosol hygroscopicity parameter ( κ ) derived from hygroscopic growth factor measurements gf at variable water...
Improved characterization of ambient PM
Abstract The impact of anthropogenic aerosol on climate forcing remains uncertain largely due to inadequate representation natural aerosols in models. marine boundary layer (MBL) might serve as a model location study processes. Yet source and sink mechanisms controlling the MBL number, size distribution, chemical composition, hygroscopic properties remain poorly constrained. Here distribution water uptake measurements were made aboard R/V Hi'ialakai from 27 June 3 July 2016 subtropical North...
Abstract Atmospheric measurements of aerosol size‐resolved hygroscopicity at submicron sizes are carried out the United States Army Corps Engineers Field Research Facility in Duck, North Carolina. The scientific aim field deployment is to gain improved understanding springtime advection aerosols from East Coast over Atlantic and help constrain assessments anthropogenic particle contributions marine boundary layer budget. Air mass back trajectories show that sampled coast largely continental...
Abstract Global energy stakeholders are increasingly becoming more committed to global methane reduction and emissions transparency. These organizations have reach production processes which can pose unique problems for consistent measurement verification techniques. To help provide measurements across the globe, this study evaluates efficacy of a drone-mounted TDLAS sensor use in Inter-tropical Convergence Zone (ITCZ), an area world plagued with dampened windspeeds often less than 2 m s-1....
Abstract Current remote sensing methods can identify aerosol types within an atmospheric column, presenting opportunity to incrementally bridge the gap between and models. Here a new algorithm was designed for Creating Aerosol Types from CHemistry (CATCH). CATCH‐derived types—dusty mix, maritime, urban, smoke, fresh smoke—are based on first‐generation airborne High Spectral Resolution Lidar (HSRL‐1) retrievals during Ship‐Aircraft Bio‐Optical Research (SABOR) campaign, July/August 2014....
The accurate representation of aerosols in climate models requires direct ambient measurement the size- and composition-dependent particle production fluxes. Here, we present design, testing, analysis data collected through first instrument capable measuring hygroscopicity-based, size-resolved fluxes using a continuous-flow Hygroscopicity-Resolved Relaxed Eddy Accumulation (Hy-Res REA) technique. Hy-Res REA system used this study includes 3D sonic anemometer, two fast-response solenoid...
Abstract. The atmospheric supply of dust iron (Fe) plays a crucial role in the Earth's biogeochemical cycle and is specific importance as micronutrient marine environment. Observations show several orders magnitude variability fractional solubility Fe aerosols, making it hard to assess mineral for global ocean cycle. In this study we compare operational aerosol associated with one flow-through leaching protocols results 3-D chemical transport model GEOS-Chem. protocol defined soluble by...
Abstract. Retrievals of aerosol optical depth (AOD) from the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) satellite sensor require assumption an extinction-to-backscatter ratio, also known as lidar ratio. This paper evaluates a new method to calculate ratio sea spray using two independent sources: AOD Synergized Optical Depth Aerosols (SODA) algorithm and integrated attenuated backscatter CALIOP. With this method, particulate can be derived for individual CALIOP retrievals in...