Jeff Peischl
A5056390420- Atmospheric chemistry and aerosols
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Atmospheric aerosols and clouds
- Vehicle emissions and performance
- Fire effects on ecosystems
- Hydrocarbon exploration and reservoir analysis
- Spectroscopy and Laser Applications
- Oil Spill Detection and Mitigation
- Odor and Emission Control Technologies
- Meteorological Phenomena and Simulations
- Methane Hydrates and Related Phenomena
- Toxic Organic Pollutants Impact
- Advanced Chemical Sensor Technologies
- Marine and coastal ecosystems
- Catalytic Processes in Materials Science
- COVID-19 impact on air quality
- Analytical Chemistry and Sensors
- Water Quality Monitoring and Analysis
- Indoor Air Quality and Microbial Exposure
- Oil, Gas, and Environmental Issues
- Lightning and Electromagnetic Phenomena
- Ocean Acidification Effects and Responses
NOAA Chemical Sciences Laboratory
2013-2025
Cooperative Institute for Research in Environmental Sciences
2016-2025
University of Colorado Boulder
2016-2025
National Oceanic and Atmospheric Administration
2016-2025
University of Colorado System
2025
TU Wien
2025
Goddard Space Flight Center
2024
Forschungszentrum Jülich
2024
Pennsylvania State University
2024
University of Nevada, Reno
2024
Methane emissions from the U.S. oil and natural gas supply chain were estimated by using ground-based, facility-scale measurements validated with aircraft observations in areas accounting for ~30% of production. When scaled up nationally, our facility-based estimate 2015 is 13 ± 2 teragrams per year, equivalent to 2.3% gross This value ~60% higher than Environmental Protection Agency inventory estimate, likely because existing methods miss released during abnormal operating conditions. this...
In situ measurements of the mass, mixing state, and optical size individual black‐carbon (BC) particles in fine mode (90–600 nm) have been made fresh emissions from urban biomass burning sources with an airborne single‐particle soot photometer. Contrasts between two are significant consistent. Urban BC tends to smaller sizes, fewer coated particles, thinner coatings, less absorption per unit mass than biomass‐burning BC. This suggests that may a longer lifetime atmosphere different impact on...
Abstract. Ozone pollution in the Southeast US involves complex chemistry driven by emissions of anthropogenic nitrogen oxide radicals (NOx ≡ NO + NO2) and biogenic isoprene. Model estimates surface ozone concentrations tend to be biased high region this is concern for designing effective emission control strategies meet air quality standards. We use detailed chemical observations from SEAC4RS aircraft campaign August September 2013, interpreted with GEOS-Chem transport model at 0.25° ×...
We present measurements of organic aerosol (OA) in urban plumes from Houston and Dallas/Fort Worth as well industrial the area during TexAQS‐2006. Consistent with TexAQS‐2000 study, show greater amount mass downwind centers compared to areas. This is likely due higher emission processing volatile compounds (VOCs) sources along ship channel. Comparisons current observations northeastern (NE) United States indicate that observed ratios enhancement above background OA, ΔOA, CO, ΔCO, are within...
During the ARCPAC (Aerosol, Radiation, and Cloud Processes affecting Arctic Climate) airborne field experiment in April 2008 northern Alaska, about 50 plumes were encountered with NOAA WP‐3 aircraft between surface 6.5 km. Onboard measurements transport model FLEXPART showed that most of emitted by forest fires southern Siberia‐Lake Baikal area agricultural burning Kazakhstan‐southern Russia. Unexpectedly, these biomass dominant aerosol gas‐phase features this during April. The influence on...
Dimethyl sulfide (DMS), emitted from the oceans, is most abundant biological source of sulfur to marine atmosphere. Atmospheric DMS oxidized condensable products that form secondary aerosols affect Earth's radiative balance by scattering solar radiation and serving as cloud condensation nuclei. We report atmospheric discovery a previously unquantified oxidation product, hydroperoxymethyl thioformate (HPMTF, HOOCH2SCHO), identified through global-scale airborne observations demonstrate it be...
Abstract Wildfires emit significant amounts of pollutants that degrade air quality. Plumes from three wildfires in the western U.S. were measured aircraft during Studies Emissions and Atmospheric Composition, Clouds Climate Coupling by Regional Surveys (SEAC 4 RS) Biomass Burning Observation Project (BBOP), both summer 2013. This study reports an extensive set emission factors (EFs) for over 80 gases 5 components submicron particulate matter (PM 1 ) these temperate wildfires. These include...
Airborne measurements of volatile organic compounds (VOCs) were performed during CalNex 2010 (California Research at the Nexus Air Quality and Climate Change) in Los Angeles (LA) basin May–June ITCT2k2 (Intercontinental Transport Chemical Transformation) May 2002. While CO 2 enhancements similar between two years, ΔCO/ΔCO ratio had decreased by about a factor two. The ΔVOC/ΔCO emission ratios stayed relatively constant years. This indicates that, relative to , VOCs LA also since These data...
Abstract. We present an overview of the background, scientific goals, and execution Aerosol, Radiation, Cloud Processes affecting Arctic Climate (ARCPAC) project April 2008. then summarize airborne measurements, made in troposphere Alaskan Arctic, aerosol particle size distributions, composition, optical properties discuss sources transport aerosols. The data were grouped into four categories based on gas-phase composition. First, background contained a relatively diffuse, sulfate-rich...
Significance Recent work in Los Angeles has shown that urban volatile organic compound (VOC) emissions from consumer and industrial products—termed chemical products (VCPs)—are now an important source of ozone precursors. Using advancements VOC instrumentation, we show VCP are ubiquitous regions can be identified via unique fingerprints. Through detailed modeling, VCPs as to production fossil fuel VOCs the chemistry have significant impacts on model simulations key atmospheric processes....
Abstract. Formic acid (HCOOH) is one of the most abundant acids in atmosphere, with an important influence on precipitation chemistry and acidity. Here we employ a chemical transport model (GEOS-Chem CTM) to interpret recent airborne ground-based measurements over US Southeast terms constraints they provide HCOOH sources sinks. Summertime boundary layer concentrations average several parts-per-billion, 2–3× larger than can be explained based known production loss pathways. This indicates or...
Detailed airborne, surface, and subsurface chemical measurements, primarily obtained in May June 2010, are used to quantify initial hydrocarbon compositions along different transport pathways (i.e., deep plumes, the surface slick, atmosphere) during Deepwater Horizon oil spill. Atmospheric measurements consistent with a limited area of surfacing oil, implications for leaked mass drop size distributions. The data further suggest relatively little variation leaking composition over time....
Single-point failures of natural gas infrastructure can hamper methane emission control strategies designed to mitigate climate change. The 23 October 2015 blowout a well connected the Aliso Canyon underground storage facility in California resulted massive release gas. Analysis and ethane data from dozens plume transects, collected during 13 research-aircraft flights between 7 November February 2016, shows atmospheric leak rates up 60 metric tons 4.5 per hour. At its peak, this effectively...
Abstract The Deep Convective Clouds and Chemistry (DC3) field experiment produced an exceptional dataset on thunderstorms, including their dynamical, physical, electrical structures impact the chemical composition of troposphere. gathered detailed information inflow outflow regions midlatitude thunderstorms in northeast Colorado, west Texas to central Oklahoma, northern Alabama. A unique aspect DC3 strategy was locate sample convective a day after active convection order measure...
Abstract Methane (CH 4 ), carbon dioxide (CO 2 monoxide (CO), and C –C 5 alkanes were measured throughout the Los Angeles (L.A.) basin in May June 2010. We use these data to show that emission ratios of CH /CO L.A. are larger than expected from population‐apportioned bottom‐up state inventories, consistent with previously published work. experimentally determined combination annual State California CO inventories derive a yearly rate basin. further airborne measurements directly rates dairy...
The coronavirus-19 (COVID-19) pandemic led to government interventions limit the spread of disease which are unprecedented in recent history; for example, stay at home orders sudden decreases atmospheric emissions from transportation sector. In this review article, current understanding influence emission reductions on pollutant concentrations and air quality is summarized nitrogen dioxide (NO2), particulate matter (PM2.5), ozone (O3), ammonia, sulfur dioxide, black carbon, volatile organic...
Abstract We present measurements of methane (CH 4 ) taken aboard a NOAA WP‐3D research aircraft in 2013 over the Haynesville shale region eastern Texas/northwestern Louisiana, Fayetteville Arkansas, and northeastern Pennsylvania portion Marcellus region, which accounted for majority gas production that year. calculate emission rates from horizontal CH flux planetary boundary layer downwind each after subtracting entering upwind. find 1 day emissions (8.0 ± 2.7) × 10 7 g/h (3.9 1.8) (1.5 0.6)...
Abstract. The chemical link between isoprene and formaldehyde (HCHO) is a strong, nonlinear function of NOx (i.e., NO + NO2). This relationship linchpin for top-down emission inventory verification from orbital HCHO column observations. It also benchmark overall photochemical mechanism performance with regard to VOC oxidation. Using comprehensive suite airborne in situ observations over the southeast US, we quantify production across urban–rural spectrum. Analysis its major first-generation...
Despite decades of declining air pollution, urban U.S. areas are still affected by summertime ozone and wintertime particulate matter exceedance events. Volatile organic compounds (VOCs) known precursors secondary aerosol (SOA) photochemically produced ozone. Urban VOC emission sources, including on-road transportation emissions, have decreased significantly over the past few through successful regulatory measures. These drastic reductions in emissions led to a change distribution...
With traffic emissions of volatile organic compounds (VOCs) decreasing rapidly over the last decades, contributions from other source categories, such as chemical products (VCPs), have become more apparent in urban air. In this work, situ measurements various VOCs are reported for New York City, Pittsburgh, Chicago, and Denver. The magnitude different emission sources relative to is determined by measuring enhancement individual benzene, a known tracer fossil fuel United States. ratios...
Wildfires are a substantial but poorly quantified source of tropospheric ozone (O3). Here, to investigate the highly variable O3 chemistry in wildfire plumes, we exploit situ chemical characterization western wildfires during FIREX-AQ flight campaign and show that production can be predicted as function experimentally constrained OH exposure, volatile organic compound (VOC) reactivity, fate peroxy radicals. The exhibits rapid transition regimes. Within few daylight hours, formation...
Significance Understanding the sources of tropospheric ozone is important for effective air quality management and accurate radiative forcing attribution. Biomass burning emits large quantities precursors to lower atmosphere. This source can drive regional-scale production, but its impact on global poorly constrained. Here, we present unique in situ aircraft observations continental pollution tracers. Ozone enhancements attributable biomass equal or exceed those from urban emissions, a...
Abstract. Anthropogenic secondary organic aerosol (ASOA), formed from anthropogenic emissions of compounds, constitutes a substantial fraction the mass submicron in populated areas around world and contributes to poor air quality premature mortality. However, precursor sources ASOA are poorly understood, there large uncertainties health benefits that might accrue reducing emissions. We show production 11 urban on three continents is strongly correlated with reactivity specific volatile...
Abstract This article provides an overview of the NASA Atmospheric Tomography (ATom) mission and a summary selected scientific findings to date. ATom was airborne measurements modeling campaign aimed at characterizing composition chemistry troposphere over most remote regions Pacific, Southern, Atlantic, Arctic Oceans, examining impact anthropogenic natural emissions on global scale. These dominate chemical reactivity are exceptionally important for air quality climate. data provide in situ...
Abstract We analyze the effects of diurnal cycle fire emissions (DCFE) and plume rise on U.S. air quality using MUSICAv0 (Multi‐Scale Infrastructure for Chemistry Aerosols Version 0) model during FIREX‐AQ (Fire Influence Regional to Global Environments Air Quality) WE‐CAN (Western wildfire Experiment Cloud chemistry, Aerosol absorption Nitrogen) field campaigns. To include DCFE in model, we employ two approaches: a climatology derived from satellite radiative power product. also implemented...