Alexander Laskin

Vertical Distribution of Aerosol Properties during TRACER

Lead Institution

Washington University in St. Louis

Principal Investigator

Rajan Chakrabarty

Project type

FICUS Research

This project will provide the vertical distribution of physico-chemical properties of individual atmospheric particles collected by ARM’s tethered balloon system (TBS) as part of the TRACER campaign…

Probing Atmospheric Nanoplastics: An Unrecognized Urban Source of Airborne Particles

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

Project type

Large-Scale EMSL Research

fragments of microplastic or larger plastic debris discharged into terrestrial and aquatic environments, while atmospheric occurrence of EnvNP is solely attributed to aerosolization by wind and other…

Towards Aerosol-Ice Formation Closure – Chemical Imaging Investigation of Aerosol and Ice Nucleating Particles

Lead Institution

State University of New York at Stony Brook

Principal Investigator

Daniel Knopf

Project type

Large-Scale EMSL Research

Prediction of ice nucleating particle (INP) number concentrations from ambient aerosol particles represents an urgent and challenging issue when simulating cloud processes in climate models. A recent…

Open Ocean Ship-Board Study of Atmospheric Aerosols at the Equatorial Pacific: Characterizing Iron in Marine Aerosol

Lead Institution

Central Washington University

Principal Investigator

Anne Johansen

Project type

Large-Scale EMSL Research

Iron is a growth-limiting nutrient to phytoplankton in the open ocean, but its sources, chemistry and physical forms are largely unknown. Since phytoplankton control global climate by producing ~50%…

High resolution mass spectrometry of high molecular weight compounds formed via the heterogeneous reaction of OH with simple organic aerosols

Lead Institution

Lawrence Berkeley National Laboratory

Principal Investigator

Kevin Wilson

Project type

Large-Scale EMSL Research

Our objective is to determine the fundamental reaction rates and mechanisms for the heterogeneous oxidation of organic aerosols by OH radicals. Single component organic aerosols particles are used…

Environmental Chemistry of Fe-containingMineral Dust Particles

Lead Institution

Lawrence Berkeley National Laboratory

Principal Investigator

Mary Gilles

Project type

Large-Scale EMSL Research

Iron is a key element for growth and metabolism in marine organisms. Solubilization of iron in mineral dust particles resulting from its atmospheric chemistry may substantially increase its…

Holistic Interactions of Shallow Clouds, Aerosols, and Land-Ecosystems (HI-SCALE)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Jerome Fast

Project type

Large-Scale EMSL Research

The proposed HI-SCALE field campaign to be conducted in the vicinity of the Southern Great Plains (SGP) "megasite" in Oklahoma during 2016 will utilize unique observational tools available…

The Formation and Structure of Tropical Organic/Water Aerosols

Lead Institution

University of Colorado at Boulder

Principal Investigator

Gayfree Ellison

Project type

Large-Scale EMSL Research

Atmospheric aerosols are widely recognized as key elements in many environmental issues ranging from global climate change and visibility to adverse effects on peoples health. Aerosols affect climate…

Chemistry of Aerosols in the North Slope of Alaska: ISDAC 2008 study.

Lead Institution

Lawrence Berkeley National Laboratory

Principal Investigator

Mary Gilles

Project type

Large-Scale EMSL Research

The ISDAC (Indirect and Semi-Direct Aerosol Campaign) field study carried out in the North Slope of Alaska 2008 was a collaborative effort sponsored by the DOE Atmospheric Radiation Measurement (ARM)…

Chemistry of Secondary Organic Aerosol (SOA) in the Ambient Atmosphere: Molecular Level Analysis of Size Resolved SOA Samples Using High Resolution Mass Spectrometry.

Lead Institution

University of California, Berkeley

Principal Investigator

Allen Goldstein

Project type

Exploratory Research

The objective of our research is to study the fundamental chemistry in the formation and aging of secondary organic aerosols (SOA) in the atmosphere. A large fraction of SOA has been shown to be…

GOAmazon: Atmospheric Aerosol Phase, Composition, and Water Vapor Uptake

Lead Institution

Lawrence Berkeley National Laboratory

Principal Investigator

Mary Gilles

Project type

Large-Scale EMSL Research

Atmopsheric particle phase, viscosity, and mixing state are inherently intertwined with one another. How particles change and evolve, particularly as a function of relative humidity is crucial for…

Integrated Experimental and Modeling Studies on Secondary Organic Aerosol Formation

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Rahul Zaveri

Project type

Large-Scale EMSL Research

The objectives of this project are to: a) simultaneously characterize the time evolution of hydrocarbon precursor gases as well as the chemical and physical properties of secondary organic aerosols …

Heterogeneous Ice Nucleation from Biomass Burning Particles: The Effect of Chemical
Composition and Chemical Aging

Lead Institution

State University of New York at Stony Brook

Principal Investigator

Daniel Knopf

Project type

Large-Scale EMSL Research

Organic material is ubiquitous in atmospheric particles. This proposal focuses on potential ice nucleation (IN) activity of biomass burning aerosol (BBA). Biomass burning is a major source of gases…

Chemical characterization of organic and biogenic atmospheric aerosol particles and their potential to initiate ice crystal formation

Lead Institution

State University of New York at Stony Brook

Principal Investigator

Daniel Knopf

Project type

Large-Scale EMSL Research

Atmospheric aerosol particles can affect the environment by changing the global radiative budget, increasing air pollution and impacting air quality with subsequent consequences for health related…

Atmospheric Soil Organic Particles

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

Recent discovery of atmospheric soil organic particles (ASOP), emitted through previously unrecognized atmosphere-land-surface interactions, suggests that ASOP may have a widespread impact over a…

Single Particle Laboratory Studies of Heterogeneous Reactions of Trace Atmospheric Gases with Particles Present in the Troposphere

Lead Institution

University of Iowa

Principal Investigator

Vicki Grassian

Project type

Exploratory Research

It is becoming increasingly clear that heterogeneous processes involving particulate matter in the atmosphere can greatly perturb the chemical composition of both the troposphere and the…

Probing the Reactivity of Organic Particles Using Ion Soft-Landing

Lead Institution

University of California, Irvine

Principal Investigator

Sergey Nizkorodov

Project type

Large-Scale EMSL Research

Formation and atmospheric processing of particulate matter is one of the focus areas emphasized by EMSL. Organic coatings on atmospheric aerosols determine the surface chemistry that particles…

Chemical Imaging Analysis of Environmental Particles

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

Project type

Large-Scale EMSL Research

This project focuses on laboratory studies that investigate the relationship between particle morphology, composition, formation, reactivity, and evaporation by developing novel methods for chemical…

Ice Nucleation Propensity of Biological Particles

Lead Institution

Xiamen University

Principal Investigator

Bingbing Wang

Project type

Large-Scale EMSL Research

The proposed study will investigate the ice nucleation propensity of atmospheric biological particles using a novel experimental platform developed in EMSL by our group. We will determine…

Photochemical Processing of Organic Aerosol Particles Studied with High-Resolution Mass Spectrometry

Lead Institution

University of California, Irvine

Principal Investigator

Sergey Nizkorodov

Project type

Large-Scale EMSL Research

This research will focus on direct photochemical processing of organic aerosol particles by solar radiation. It will address the following important questions: (1) How do direct photochemical…

Probing atmospheric chemistry of aerosols to gain insights into cloud condensation
behavior

Lead Institution

University of California, San Diego

Principal Investigator

Kimberly Prather

Project type

Large-Scale EMSL Research

This proposal focuses on performing off-line complementary measurements of single particles in an effort to better understand single particle chemistry, morphology, metal speciation, CCN ability,…

Molecular Characterization of Secondary Organic Aerosol Formed via Aqueous-phase Reactions of Phenolic Compounds

Lead Institution

University of California, Davis

Principal Investigator

Qi Zhang

Project type

Large-Scale EMSL Research

The main objective of this proposed project is to perform detailed, molecular- level characterization of the chemical composition of secondary organic aerosol formed via aqueous-phase reactions of…

Effect of Condensed-Phase Photochemical Reactions on Viscosity and Volatility of Organic Aerosols

Lead Institution

University of California, Irvine

Principal Investigator

Manabu Shiraiwa

Project type

Large-Scale EMSL Research

Recent advances in understanding aerosol chemistry strongly suggest that: (1) photochemical processes occurring inside aerosol particles represent an important mechanism of aging for organic aerosols…

Morphology and composition of encoded segmented metal oxide nanowires

Lead Institution

Southern Illinois University

Principal Investigator

Andrei Kolmakov

Project type

Exploratory Research

The recent interest in one-dimensional semiconducting nanostructures is based on their possible operation as ultrasmall active elements in applications such as nanoelectronics, optoelectronics,…

Heterogeneous Photochemistry of Organic-Coated Mineral Dust Aerosol

Lead Institution

University of Iowa

Principal Investigator

Vicki Grassian

Project type

Large-Scale EMSL Research

The proposed research will apply state-of-the-art mass spectrometric approaches developed for large complex molecules to interrogate chemical composition of Humic Like Substanses. Specifically, we…

Reactive Spectro-microscopy Studies of Substrate-Deposited of Organic Aerosol Particles

Lead Institution

University of Iowa

Principal Investigator

Alexei Tivanski

Project type

Large-Scale EMSL Research

This project seeks to characterize the chemical and morphological changes of individual atmospheric particles during chemical transformations. Chemical transformations include oxidation of these…

Sulfur Isotope Fractionation Analysis of Individual Atmospheric Particles

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

Project type

Large-Scale EMSL Research

We propose a set of laboratory studies focused on understanding of chemical forms, oxidation states, and isotopic fractionation of sulfur in atmospherically aged particles collected in a number of…

Aerosol properties and processes in remote marine environment

Lead Institution

Washington University in St. Louis

Principal Investigator

Jian Wang

Project type

Large-Scale EMSL Research

With their extensive coverage, low clouds greatly impact global climate. Presently, low clouds are poorly represented in global climate models (GCMs), and the response of low clouds to changes in…

Environmental Effects of Aircraft Engine Exhaust Particles (A. Laskin's DOD-ILA, PNNL Scope #49510)

Lead Institution

Battelle Columbus

Principal Investigator

Chester Spicer

Project type

Exploratory Research

The environmental effects of aircraft engine exhaust particles have recently gained increasing attention primarily focused on their vital role in influencing the upper troposphere - lower…

Kinetic Study of Heterogeneous Reaction of Soot with Reactive Oxidants

Lead Institution

Stanford University

Principal Investigator

Hai Wang

Project type

Large-Scale EMSL Research

Heterogeneous reactions occurring between aerosol particles and reactive gaseous species in the atmosphere have significant impacts on atmospheric composition and chemistry, global radiative forcing,…

Kinetic study of heterogeneous reaction of palladium nanoparticles with O2 and OH

Lead Institution

Stanford University

Principal Investigator

Hai Wang

Project type

Large-Scale EMSL Research

The proposed research will examine the reaction kinetics and mechanism of palladium nanoparticle oxidation in molecular oxygen and by the hydroxyl radical. We will use the substrate deposited…

Molecular Level Analysis of Photochemical Processing of Brown Carbon and Nitrogen Compounds in Atmospheric Aerosols

Lead Institution

University of California, Irvine

Principal Investigator

Sergey Nizkorodov

Project type

Large-Scale EMSL Research

Atmospheric aerosols have a profound effect on climate by scattering and absorbing solar and Earth radiation. They can be predominantly scattering (e.g., sea-salt aerosol), predominantly absorbing (e…

Chemical Imaging and Molecular Characterization of Primary Biological Particles.

Lead Institution

University of California, Irvine

Principal Investigator

Alex Guenther

Project type

Large-Scale EMSL Research

The objective of the proposed project is to conduct in-depth studies of Primary Biological Aerosol Particles (PBAP) for predictive understanding of their environmental impact. The ultimate goal is to…

Oxidation of atmospheric organic particulate matter

Lead Institution

University of British Columbia

Principal Investigator

Allan Bertram

Project type

Exploratory Research

Organic particulate matter is abundant throughout the atmosphere. These organic particles may contribute significantly to the radiative forcing, thus, changing the Earth's climate. Additionally,…

Heterogeneous Uptake of HNO3 on CaCO3: Determination of the Gas-Particle Reaction Probability as Function of Relative Humidity

Lead Institution

University of Iowa

Principal Investigator

Vicki Grassian

Project type

Large-Scale EMSL Research

The proposed work will provide an accurate measurement of the heterogeneous reaction probability for HNO3 on CaCO3 and its dependence on relative humidity. The value of &#947;HNO3 (uptake…

Mexico City Municipal Area Air pollution Study, 2003

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James Cowin

Project type

Exploratory Research

This study is part of a larger international monitoring effort, to take place for 6 weeks, in and near Mexico City. The project is to examine air pollution factors, including particulates and trace…

Chemical Imaging Studies of Liquid-Liquid Phase Separation in Atmospheric Aerosols

Lead Institution

Lawrence Berkeley National Laboratory

Principal Investigator

Mary Gilles

Project type

Large-Scale EMSL Research

A large fraction of atmospheric aerosols contain an internal mixture of organics and inorganic salts. As the relative humidity (RH) cycles in the atmosphere, these particles can undergo phase…

Atmospheric Soil Organic Particles

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

Recent discovery of atmospheric soil organic particles (ASOP), emitted through previously unrecognized atmosphere-land-surface interactions, suggests that ASOP may have a widespread impact over a…

Automated Analysis of Field-Collected Aerosols

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James Cowin

Project type

Exploratory Research

We have developed a field portable instrument for automated collection of particles on a time-resolved basis. Essential to this project is having access to automated particle analysis. This…

Impact of Reactive Halogen Species on the Air Quality in Southern California Coastal Areas

Lead Institution

Washington State University

Principal Investigator

Bertram Jobson

Project type

Large-Scale EMSL Research

Air pollution in coastal urban centers remains one of the most serious environmental challenges in the State of California, and further efforts to improve air quality are a priority. Mitigation…

Development of Novel Approaches for Analysis of Secondary Organic Aerosols
Using High-Resolution Mass Spectrometry.

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

The objective of the proposed research is to develop new approaches for advanced detailed characterization of the chemical composition of organic aerosols (OA) that will enable a fundamental…

Ice Nucleation Properties of Authentic Atmospheric Marine Particles

Lead Institution

Sonoma Technology

Principal Investigator

Ryan Moffet

Project type

Large-Scale EMSL Research

The effect that aerosol particles have on climate is highly uncertain and has garnered much attention in recent years. Specifically, the effect that aerosol particles have on cloud formation is one…

Plant Stress in a Changing Environment: Using Plant Metabolomics to Improve Predictions of Biogenic Secondary Organic Aerosol Production

Lead Institution

University of California, Irvine

Principal Investigator

Celia Faiola

Project type

Large-Scale EMSL Research

This research addresses a critical barrier in our understanding of the processes controlling biogenic secondary organic aerosol formation (SOA), and how they are evolving in a changing environment…

Aerosol Aging and Climate Change (Cowin's NOAA, PNNL Scope #47840)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James Cowin

Project type

Exploratory Research

Using easily field-deployable, time-resolved aerosol collectors (TRAC and TAQ) create sample archives that permit quantitative, single particle-size and elemental-composition analysis of mixed…

Analysis of Organic Oligomers Forming Secondary Aerosol from Wood Combustion-Derived Phenols

Lead Institution

University of California, Davis

Principal Investigator

Cort Anastasio

Project type

Large-Scale EMSL Research

Aqueous reactions of phenols will be studied in the laboratory using well defined solutions over a range of conditions (e.g., phenol mixture, oxidant and pH) as surrogates for atmospheric drops. The…

In-Situ Monitoring Electrode Surface Reactions Using High-Resolution Desorption Electrospray Ionization Mass Spectrometry (DESI-MS)

Lead Institution

Ohio University

Principal Investigator

Hao Chen

Project type

Large-Scale EMSL Research

Probing the real-time chemical processes on the electrode surfaces is crucial for obtaining fundamental understanding of redox mechanisms and the nature of active intermediates involved in…

Fundamental Studies of Ice Nucleation Using Environmental Scanning Electron Microscope (ESEM)

Lead Institution

Purdue University

Principal Investigator

Alexander Laskin

Project type

Large-Scale EMSL Research

The proposed research is to demonstrate applicability of a novel experimental platform for systematic studies of ice nucleation efficiency of atmospheric particles with determination of…

Understanding Reactive Nitrogen Recycling on Soil and Mineral Dust Surfaces

Lead Institution

Indiana University - Bloomington

Principal Investigator

Jonathan Raff

Project type

Large-Scale EMSL Research

A fundamental understanding of the factors controlling the lifetime and fate of reactive nitrogen oxides (NOy = NO, NO2, HNO2, N2O5, etc.) in the atmosphere is critical for accurately representing…

In Situ Probe of Oxidation at Environmental Interfaces (Cowin's LDRD, PNNL Scope #48767)

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

James Cowin

Project type

Exploratory Research

Provide/greatly-enhance the ability to apply powerful vacuum based analytical techniques to real time studies of the reaction of surfaces and particles to reactive and damp gases.

The Role of Ice and Aerosol Surfaces in Halogen Activation in the Arctic Springtime Boundary Layer

Lead Institution

University of Alaska Fairbanks

Principal Investigator

William Simpson

Project type

Large-Scale EMSL Research

The UAF research group of Prof. Simpson is performing an intensive field campaign in Barrow, Alaska during March 2007. The goal of this field campaign is to quantify the amounts of reactive bromine …

Projects