Jonathan Raff

Iron Oxides as Key Catalysts in the Conversion of Nitrogen Dioxide to Nitrous Acid on Atmospheric Boundary Layer Surfaces

Lead Institution

Indiana University - Bloomington

Principal Investigator

Jonathan Raff

Project type

Limited Scope

Photolysis of HONO is the primary source of hydroxyl radical, which reacts with volatile organic compounds and nitrogen oxides (NOx) to generate the ozone and aerosols associated with photochemical…

Toward an Improved Understanding of Multiphase Reactions Occurring on Mineral and Soil Dust Aerosol Surfaces

Lead Institution

Indiana University - Bloomington

Principal Investigator

Jonathan Raff

Project type

Large-Scale EMSL Research

Aerosols derived from wind-blown soil represent a significant component of the global aerosol budget that has a large, but uncertain effect on Earth’s climate. These particles are comprised 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…

Mineralogy and Soil Organic Matter Composition as Drivers of Reactive Nitrogen Emissions from Midwestern Hardwood Forest Soils

Lead Institution

Indiana University - Bloomington

Principal Investigator

Jonathan Raff

Project type

Exploratory Research

The overall goal of this proposal is to investigate how plant-microbe-mineral interactions drive emissions of reactive nitrogen from soils. Fluxes of reactive nitrogen oxides [NOy = NO + NO2 + HONO]…

Speciation and Photochemistry of Nitrogen Oxides Adsorbed to Environmentally Relevant Surfaces

Lead Institution

University of California, Irvine

Principal Investigator

Barbara Finlayson-Pitts

Project type

Large-Scale EMSL Research

The overall goal of this research is to elucidate the mechanism of HONO formation by the photolysis of adsorbed-NOy (NOy = NO + NO2 + HNO3 + N2O5 + ...) species on environmentally relevant surfaces…

Speciation and Photochemistry of Nitrogen Oxides Adsorbed to Environmentally Relevant Surfaces: A Rapid Access Proposal

Lead Institution

University of California, Irvine

Principal Investigator

Barbara Finlayson-Pitts

Project type

Limited Scope

The overall goal of this research is to elucidate the mechanism of HONO formation by the photolysis of adsorbed-NOy (NOy = NO + NOâ‚‚ + HNOâ‚ƒ + Nâ‚‚Oâ‚… + â€¦)species on environmentally relevant…

Investigation of the Photochemistry of Ammonia Adsorbed to Titania Surfaces as a Source of Oxides of Nitrogen in the Atmosphere

Lead Institution

Indiana University - Bloomington

Principal Investigator

Jonathan Raff

Project type

Limited Scope

Field measurements consistently show that photolysis of nitrous acid (HONO) is by far the most important source of OH radicals in the early morning hours, more so than OH generated from ozone and…

EMSL Science Overview

Jonathan Raff

Projects

Iron Oxides as Key Catalysts in the Conversion of Nitrogen Dioxide to Nitrous Acid on Atmospheric Boundary Layer Surfaces

Toward an Improved Understanding of Multiphase Reactions Occurring on Mineral and Soil Dust Aerosol Surfaces

Understanding Reactive Nitrogen Recycling on Soil and Mineral Dust Surfaces

Mineralogy and Soil Organic Matter Composition as Drivers of Reactive Nitrogen Emissions from Midwestern Hardwood Forest Soils

Speciation and Photochemistry of Nitrogen Oxides Adsorbed to Environmentally Relevant Surfaces

Speciation and Photochemistry of Nitrogen Oxides Adsorbed to Environmentally Relevant Surfaces: A Rapid Access Proposal

Investigation of the Photochemistry of Ammonia Adsorbed to Titania Surfaces as a Source of Oxides of Nitrogen in the Atmosphere