Sebastian D Eastham

Dados Biográficos

ID7992046
NOMESebastian D Eastham
PRENOMESSebastian D
SOBRENOMEEastham
ASSINATURAEASTHAM S D
AFILIAÇÕESAmerican Institute of Aeronautics and Astronautics
ORCID0000-0002-2476-4801
VERIFICADOSim
TOTAL DE OBRAS12
TOTAL DE CITAÇÕES0
TOTAL COMO AUTOR12
TOTAL COMO EDITOR0
PRIMEIRO ANO DE PUBLICAÇÃO2015
ANO MAIS RECENTE DE PUBLICAÇÃO2025
ÍNDICE H0

  • Experts share priorities for addressing aerosol uncertainty

    Open AccessKatye E Altieri, Katye Altieri et al.ARTICLEOne Earth2025

  • Air quality impacts of electricity purchase and air travel by organizations

    Open AccessYuang Chen, Florian Allroggen et al.ARTICLEEnvironmental Research Letters2025

    Organizational climate actions often prioritize greenhouse gas reductions without considering other impacts such as improved air quality from reduced fossil fuel use. While air quality benefits of large-scale policies are well studied, those of organization-level activities are more uncertain. We quantify the impact of organizations’ fossil fuel use from electricity purchasing and air travel on climate and air quality using a system-level approac…

  • Climate and air quality impact of using ammonia as an alternative shipping fuel

    Open AccessAnthony Y H Wong, Noelle E Selin et al.ARTICLEEnvironmental Research Letters2024

    As carbon-free fuel, ammonia has been proposed as an alternative fuel to facilitate maritime decarbonization. Deployment of ammonia-powered ships is proposed as soon as 2024. However, NO x , NH 3 and N 2 O from ammonia combustion could impact air quality and climate. In this study, we assess whether and under what conditions switching to ammonia fuel might affect climate and air quality. We use a bottom–up approach combining ammonia engine experi…

  • Stratospheric aerosol injection may impact global systems and human health outcomes

    Open AccessSamantha M Tracy, Jonathan M Moch et al.ARTICLEElementa Science of the…2022

    Solar radiation management (SRM) is a climate engineering strategy to reduce temperature increases due to global climate change. The most well-researched SRM methodology is stratospheric aerosol injection (SAI), which involves increasing the concentration of aerosol particles in the stratosphere to reduce the amount of solar radiation reaching Earth’s surface. The most considered and heavily researched aerosol for SAI is sulfate. SAI has been ext…

  • Contrail coverage over the United States before and during the Covid-19 pandemic

    Open AccessVincent Meijer, Vincent R Meijer et al.ARTICLEEnvironmental Research Letters2022

    Contrails are potentially the largest contributor to aviation-attributable climate change, but estimates of their coverage are highly uncertain. No study has provided observation-based continental-scale estimates of the diurnal, seasonal, and regional variability in contrail coverage. We present contrail coverage estimates for the years 2018, 2019 and 2020 for the contiguous United States, derived by developing and applying a deep learning algori…

  • Reanalysis-driven simulations may overestimate persistent contrail formation by 100%–250

    Open AccessAkshat Agarwal, Vincent Meijer et al.ARTICLEEnvironmental Research Letters2021

    Model-based estimates of aviation’s climate impacts have found that contrails contribute 36%–81% of aviation’s instantaneous radiative forcing. These estimates depend on the accuracy of meteorological data provided by reanalyses like ECMWF Reanalysis 5th Generation (ERA5) and Modern Era Retrospective analysis for Research and Applications V2 (MERRA-2). Using data from 793 044 radiosondes, we find persistent contrails forming at cruise altitudes i…

  • Global air quality and health impacts of domestic and international shipping

    Open AccessYiqi Zhang, Sebastian D Eastham et al.ARTICLEEnvironmental Research Letters2021

    Shipping activities contribute to degraded air quality and premature mortalities worldwide, but previous assessments of their health impact have not yet differentiated contributions from domestic and international shipping at the global level. The impacts of domestic shipping can affect different populations, and domestic and international shipping emissions are governed under different regulatory systems. Thus, a consistent global analysis compa…

  • Marginal climate and air quality costs of aviation emissions

    Open AccessCarla Grobler, Philip J Wolfe et al.ARTICLEEnvironmental Research Letters2019

    Aviation emissions have been found to cause 5% of global anthropogenic radiative forcing and ∼16 000 premature deaths annually due to impaired air quality. When aiming to reduce these impacts, decision makers often face trade-offs between different emission species or impacts in different times and locations. To inform rational decision-making, this study computes aviation’s marginal climate and air quality impacts per tonne of species emitted an…

  • Mortality tradeoff between air quality and skin cancer from changes in stratospheric ozone

    Open AccessSebastian D Eastham, Douglas Keith et al.ARTICLEEnvironmental Research Letters2018

    Skin cancer mortality resulting from stratospheric ozone depletion has been widely studied. Similarly, there is a deep body of literature on surface ozone and its health impacts, with modeling and observational studies demonstrating that surface ozone concentrations can be increased when stratospheric air mixes to the Earth's surface. We offer the first quantitative estimate of the trade-off between these two effects, comparing surface air qualit…

  • Public health impacts of excess NO x emissions from Volkswagen diesel passenger vehicles in Germany

    Open AccessGuillaume P Chossière, Robert M Malina et al.ARTICLEEnvironmental Research Letters2017

    In September 2015, the Volkswagen Group (VW) admitted the use of ‘defeat devices’ designed to lower emissions measured during VW vehicle testing for regulatory purposes. Globally, 11 million cars sold between 2008 and 2015 are affected, including about 2.6 million in Germany. On-road emissions tests have yielded mean on-road NOx emissions for these cars of 0.85 g km 1, over four times the applicable European limit of 0.18 g km 1. This study estim…

  • Impact of the Volkswagen emissions control defeat device on US public health

    Open AccessSteven R H Barrett, Raymond L Speth et al.ARTICLEEnvironmental Research Letters2015

    The US Environmental Protection Agency (EPA) has alleged that Volkswagen Group of America (VW) violated the Clean Air Act (CAA) by developing and installing emissions control system ‘defeat devices’ (software) in model year 2009–2015 vehicles with 2.0 litre diesel engines. VW has admitted the inclusion of defeat devices. On-road emissions testing suggests that in-use NO _x emissions for these vehicles are a factor of 10 to 40 above the EPA standa…

  • Global, regional and local health impacts of civil aviation emissions

    Open AccessSteve Hung Lam Yim, Gideon L Lee et al.ARTICLEEnvironmental Research Letters2015

    Aviation emissions impact surface air quality at multiple scales—from near-airport pollution peaks associated with airport landing and take off (LTO) emissions, to intercontinental pollution attributable to aircraft cruise emissions. Previous studies have quantified aviation’s air quality impacts around a specific airport, in a specific region, or at the global scale. However, no study has assessed the air quality and human health impacts of avia…