A5091070801- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Atmospheric and Environmental Gas Dynamics
- Air Quality and Health Impacts
- Coagulation and Flocculation Studies
- Thermoregulation and physiological responses
- Aerosol Filtration and Electrostatic Precipitation
- Chemistry and Stereochemistry Studies
- Advanced Breast Cancer Therapies
- Arctic and Antarctic ice dynamics
- Chronic Lymphocytic Leukemia Research
- Cerebrovascular and Carotid Artery Diseases
- Spacecraft Design and Technology
- Fire effects on ecosystems
- Diverse Scientific and Economic Studies
- Environmental Sustainability and Education
- Vehicle emissions and performance
- Ocular and Laser Science Research
- Quantum, superfluid, helium dynamics
- Planetary Science and Exploration
- Nuclear Physics and Applications
- Syphilis Diagnosis and Treatment
- Diverse Scientific Research in Ukraine
Brookhaven National Laboratory
2016-2025
Oak Ridge National Laboratory
2023
Kent State University
2020
Los Alamos National Laboratory
2018
Scripps Institution of Oceanography
2018
University of California, San Diego
2018
Texas A&M University
2018
Environment and Climate Change Canada
2018
University of Tartu
2008-2011
Wildfire is a major source of biomass burning aerosols, which greatly impact Earth climate. Tree species in North America (NA) boreal forests can support high-intensity crown fires, resulting elevated injection height and longer lifetime (on the order months) wildfire aerosols. Given long lifetime, properties aged NA aerosols are required to understand quantify their effects on radiation Here we present comprehensive characterization climatically relevant properties, including optical cloud...
Abstract. The response of marine low cloud systems to changes in aerosol concentration represents one the largest uncertainties climate simulations. Major contributions this uncertainty are derived from poor understanding under natural conditions and perturbation by anthropogenic emissions. eastern North Atlantic (ENA) is a region persistent but diverse boundary layer (MBL) clouds, whose albedo precipitation highly susceptible perturbations properties. In study, we examine MBL properties,...
Abstract The Arctic warms nearly four times faster than the global average, and aerosols play an increasingly important role in climate change. In Arctic, sea salt is a major aerosol component terms of mass concentration during winter spring. However, mechanisms production remain unclear. Sea are typically thought to be relatively large size but low number concentration, implying that their influence on cloud condensation nuclei population properties generally minor. Here we present...
Abstract. The Air Ion Spectrometer (AIS) measures mobility and size distributions of atmospheric ions. Neutral cluster (NAIS) can additionally measure neutral particles. number the (N)AIS instruments in world is only 11. Nevertheless, they are already widely used ion studies, particularly related to initial steps new particle formation. There no standard method applicable for calibrating spectrometers sub-3 nm range. However, recent development high resolution DMAs has enabled separation...
Abstract Secondary aerosols formed from anthropogenic pollutants and natural emissions have substantial impacts on human health, air quality, the Earth's climate. New particle formation (NPF) contributes up to 70% of global production cloud condensation nuclei (CCN), but effects biogenic volatile organic compounds (BVOCs) their oxidation products NPF processes in forests are poorly understood. Observations show that isoprene, most abundant BVOC, suppresses forests. But previously proposed...
Abstract Aerosols alter Earth’s radiative budget both directly and indirectly through interaction with clouds. Continuous observations are required to reduce the uncertainties in climate models associated atmospheric processing interactions between aerosols Field of a central component Atmospheric Radiation Measurement (ARM) Facility’s global measurements. The ARM mission goal is “provide research community strategically located situ remote sensing observatories designed improve...
Abstract. Marine low clouds strongly influence global climate, and their radiative effects are particularly susceptible to the concentration of cloud condensation nuclei (CCN). One major source CCN is condensational growth pre-CCN particles, sulfate has long been considered condensing species in remote marine boundary layer. While some studies have suggested that secondary organic can contribute particle growth, its importance remains unclear. Here we present first long-term observational...
Abstract. Observations of the organic components natural aerosol are scarce in Antarctica, which limits our understanding aerosols and their connection to seasonal spatial patterns cloud albedo region. From November 2015 December 2016, ARM West Antarctic Radiation Experiment (AWARE) measured submicron properties near McMurdo Station at southern tip Ross Island. Submicron mass (OM), particle number, condensation nuclei concentrations were higher summer than other seasons. The measurements...
Sea salt aerosol (SSaer) significantly impacts aerosol-radiation and aerosol-cloud interactions, sublimated blowing snow is hypothesized to be an important SSaer source in polar regions. Understanding other wind-sourced aerosols’ climate relevant properties needed, especially during winter when Arctic amplification greatest. However, most of our understanding comes from modeling studies, direct observations are sparse. Additionally, can originate multiple sources, making it difficult...
Abstract. High-time-resolution measurements of in situ aerosol and cloud properties provide the ability to study regional atmospheric processes that occur on timescales minutes hours. However, one limitation this approach is continuous often include periods when data collected are not representative aerosol. Even at remote locations, submicron aerosols pervasive ambient atmosphere with many sources. Therefore, dominated by local should be identified before conducting subsequent analyses...
Abstract. The eastern North Atlantic (ENA) is a region dominated by pristine marine environment and subtropical boundary layer clouds. Under unperturbed atmospheric conditions, the regional aerosol regime in ENA varies seasonally due to different seasonal surface-ocean biogenic emissions, removal processes, meteorological regimes. However, during periods when impacted particles transported from continental sources, properties within change significantly, affecting concentration of cloud...
The Arctic environment is transforming rapidly due to climate change. Aerosols' abundance and physicochemical characteristics play a crucial, yet uncertain, role in these changes their influence on the surface energy budget through direct interaction with solar radiation indirectly via cloud formation. Importantly, aerosol properties are also changing response Despite importance, year-round measurements of sparse often confined lower latitudes at land-based stations and/or short...
Non-uniformly charged particles cause a major problem in electrical methods for producing standard aerosols, imposing strict limitations on the usability of obtained aerosols. This article gives quick overview this problem, examining ways how differently affect generation and presenting new method aerosols avoiding effects multiply particles, with key idea that probability small to have more than one charge is very low. A two-stage aerosol generator used. Small silver (d< 40 nm) generated by...
Abstract. The response of marine low cloud systems to changes in aerosol concentration represents one the largest uncertainties climate simulations. Major contributions this uncertainty derive from poor understanding under natural conditions and perturbation by anthropogenic emissions. Eastern North Atlantic (ENA) is a region persistent but diverse boundary layer (MBL) clouds, whose albedo precipitation are highly susceptible perturbations properties. In study, we examine MBL properties,...