Joshua (Shuka) Schwarz

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Organization:

NOAA Chemical Sciences Laboratory

Email:

Contact person by email

Business Phone:

Work: (303) 578-0595

Mobile: (303) 506-1892

Fax: (303) 497-5373

Business Address:

NOAA ESRL Chemical Sciences Division

325 Broadway, R/CSL6

Boulder, CO 80305

United States

Website:

Supervisory Physcist

First Author Publications:

Schwarz, J., and J. Katich (2019), ATom: L2 In Situ Measurements from Single Particle Soot Photometer (SP2), Ornl Daac, doi:10.3334/ORNLDAAC/1672.
Schwarz, J., et al. (2017), Aircraft measurements of black carbon vertical profiles show upper tropospheric variability and stability, Geophys. Res. Lett., 44, doi:10.1002/2016GL071241.
Schwarz, J., et al. (2015), Technique and theoretical approach for quantifying the hygroscopicity of black-carbon-containing aerosol using a single particle soot photometer, Journal of Aerosol Science, 81, 110-126.
Schwarz, J., et al. (2013), Black carbon aerosol size in snow, SCIENTIFIC REPORTS, 3, 1356-1460, doi:10.1038/srep01356.
Schwarz, J., et al. (2012), Assessing Single Particle Soot Photometer and Integrating Sphere/Integrating Sandwich Spectrophotometer measurement techniques for quantifying black carbon concentration in snow, Atmos. Meas. Tech., 5, 2581-2592, doi:10.5194/amt-5-2581-2012.
Schwarz, J., et al. (2010), Global‐scale black carbon profiles observed in the remote atmosphere and compared to models, Geophys. Res. Lett., 37, L18812, doi:10.1029/2010GL044372.
Schwarz, J., et al. (2010), The Detection Efficiency of the Single Particle Soot Photometer, Aerosol Sci. Tech., 44, 612-628, doi:10.1080/02786826.2010.481298.
Schwarz, J., et al. (2009), Heating rates and surface dimming due to black carbon aerosol absorption associated with a major U.S. city, Geophys. Res. Lett., 36, L15807, doi:10.1029/2009GL039213.
Schwarz, J., et al. (2008), Coatings and their enhancement of black carbon light absorption in the tropical atmosphere, J. Geophys. Res., 113, D03203, doi:10.1029/2007JD009042.
Schwarz, J., et al. (2006), Single-particle measurements of midlatitude black carbon and light-scattering aerosols from the boundary layer to the lower stratosphere, J. Geophys. Res., 111, D16207, doi:10.1029/2006JD007076.

Co-Authored Publications:

Gkatzelis, G., et al. (2024), Parameterizations of US wildfire and prescribed fire emission ratios and emission factors based on FIREX-AQ aircraft measurements, Atmos. Chem. Phys., doi:10.5194/acp-24-929-2024.
Gkatzelis, G., et al. (2024), Parameterizations of US wildfire and prescribed fire emission ratios and emission factors based on FIREX-AQ aircraft measurements, Atmos. Chem. Phys., doi:10.5194/acp-24-929-2024.
Zhang, J., et al. (2024), Stratospheric air intrusions promote global-scale new particle formation.Science, Wang, 385, 210-216, doi:10.1126/science.adn2961.
Katich, J., et al. (2023), Pyrocumulonimbus affect average stratospheric aerosol composition, Science, 379, 815-820, doi:10.1126/science.add3101.
Khan, A. L., P. Xian, and J. Schwarz (2023), Black carbon concentrations and modeled smoke deposition fluxes to the bare-ice dark zone of the Greenland Ice Sheet, The Cryosphere, 17, 2909-2918, doi:10.5194/tc-17-2909-2023.
Kumar, A., et al. (2023), Simulating wildfire emissions and plume rise using geostationary satellite fire radiative power measurements: a case study of the 2019 Williams Flats fire, Atmos. Chem. Phys., doi:10.5194/acp-22-10195-2022.
Saide Peralta, et al. (2023), Understanding the Evolution of Smoke Mass Extinction Efficiency Using Field Campaign Measurements, Geophys. Res. Lett., 49, e2022GL099175, doi:10.1029/2022GL099175.
Tang, Y., et al. (2023), Evaluation of the NAQFC driven by the NOAA Global Forecast System (version 16): comparison with the WRF-CMAQ during the summer 2019 FIREX-AQ campaign, Geosci. Model. Dev., doi:10.5194/gmd-15-7977-2022.
Warneke, C., et al. (2023), Fire Influence on Regional to Global Environments and Air Quality (FIREX-AQ), J. Geophys. Res., 128, e2022JD037758, doi:10.1029/2022JD037758.
Zhu, H., et al. (2023), Parameterization of size of organic and secondary inorganic aerosol for efficient representation of global aerosol optical properties, Atmos. Chem. Phys., doi:10.5194/acp-23-5023-2023.
Adachi, K., et al. (2022), Fine ash-bearing particles as a major aerosol component in biomass burning smoke, J. Geophys. Res., 127, e2021JD035657, doi:10.1029/2021JD035657.
Kacenelenbogen, M. S., et al. (2022), Identifying chemical aerosol signatures using optical suborbital observations: how much can optical properties tell us about aerosol composition?, Atmos. Chem. Phys., doi:10.5194/acp-22-3713-2022.
Liu, M., et al. (2022), The underappreciated role of anthropogenic sources in atmospheric soluble iron flux to the Southern Ocean, NPJ Climate and Atmospheric Science, 5(1), doi:10.1038/s41612-022-00250-w.
Saide Peralta, et al. (2022), Understanding the Evolution of Smoke Mass Extinction Efficiency Using Field Campaign Measurements, Geophys. Res. Lett., 49, e2022GL099175, doi:10.1029/2022GL099175.
Zeng, L., et al. (2022), Characteristics and evolution of brown carbon in western United States wildfires, Atmos. Chem. Phys., doi:10.5194/acp-22-8009-2022.
Zeng, L., et al. (2022), Characteristics and evolution of brown carbon in western United States wildfires, Atmos. Chem. Phys., doi:10.5194/acp-22-8009-2022.
Brock, C., et al. (2021), Ambient aerosol properties in the remote atmosphere from global-scale in situ measurements, Atmos. Chem. Phys., 21, 15023-15063, doi:10.5194/acp-21-15023-2021.
Chen, X., et al. (2021), HCOOH in the Remote Atmosphere: Constraints from Atmospheric Tomography (ATom) Airborne Observations, ACS Earth Space Chem., doi:10.1021/acsearthspacechem.1c00049.
Lamb, K., et al. (2021), Global-scale constraints on light-absorbing anthropogenic iron oxide aerosols, Nature, doi:10.1038/s41612-021-00171-0.
Thompson, C., et al. (2021), The NASA Atmospheric Tomography (ATom) Mission: Imaging the Chemistry of the Global Atmosphere, Bull. Am. Meteorol. Soc., doi:10.1175/BAMS-D-20-0315.1.
Wiggins, E. B., et al. (2021), Reconciling assumptions in bottom-up and top-down approaches for estimating aerosol emission rates from wildland fires using observations from FIREX-AQ, J. Geophys. Res., 126, e2021JD035692, doi:10.1029/2021JD035692.
Carter, T. S., et al. (2020), How emissions uncertainty influences the distribution and radiative impacts of smoke from fires in North America, Atmos. Chem. Phys., 20, 2073-2097, doi:10.5194/acp-20-2073-2020.
Choi, Y., et al. (2020), Temporal and spatial variations of aerosol optical properties over the Korean peninsula during KORUS-AQ, in review, Atmos. Environ..
Hodzic, A., et al. (2020), Characterization of organic aerosol across the global remote troposphere: a comparison of ATom measurements and global chemistry models, Atmos. Chem. Phys., 20, 4607-4635, doi:10.5194/acp-20-4607-2020.
Saide Peralta, et al. (2020), Understanding and improving model representation of aerosol optical properties for a Chinese haze event measured during KORUS-AQ, Atmos. Chem. Phys., 20, 6455-6478, doi:10.5194/acp-20-6455-2020.
Zeng, L., et al. (2020), Global Measurements of Brown Carbon and Estimated Direct Radiative Effects, Geophys. Res. Lett., 47, doi:10.1029/2020GL088747.
Brock, C., et al. (2019), Aerosol size distributions during the Atmospheric Tomography Mission (ATom): methods, uncertainties, and data products, Atmos. Meas. Tech., 12, 3081-3099, doi:10.5194/amt-12-3081-2019.
Lund, M. T., et al. (2019), Short Black Carbon lifetime inferred from a global set of aircraft observations, Nature Clim Atmos Sci, doi:10.1038/s41612-018-0040-x.
Ullrich, R., et al. (2019), Comparison of Modeled and Measured Ice Nucleating Particle Composition in a Cirrus Cloud, J. Atmos. Sci., 76, 1015-1029, doi:10.1175/JAS-D-18-0034.1.
Yu, P., et al. (2019), Efficient In‐Cloud Removal of Aerosols by Deep Convection, Geophys. Res. Lett., 46, 1061-1069, doi:10.1029/2018GL080544.
Ditas, J., et al. (2018), Strong impact of wildfires on the abundance and aging of black carbon in the lowermost stratosphere, Proc. Natl. Acad. Sci., 811595-11603, doi:10.1073/pnas.1806868115.
Katich, J., et al. (2018), ATom: Black Carbon Mass Mixing Ratios from ATom-1 Flights, Ornl Daac, doi:10.3334/ORNLDAAC/1618.
Katich, J., et al. (2018), Strong Contrast in Remote Black Carbon Aerosol Loadings Between the Atlantic and Pacific Basins, J. Geophys. Res., 123, 13,386-13,395, doi:10.1029/2018JD029206.
Lamb, K., et al. (2018), Estimating Source Region Influences on Black Carbon Abundance, Microphysics, and Radiative Effect Observed Over South Korea, J. Geophys. Res., 123, 13,527-13,548, doi:10.1029/2018JD029257.
Wang, X., et al. (2018), Exploring the observational constraints on the simulation of brown carbon, Atmos. Chem. Phys., 18, 635-653, doi:10.5194/acp-18-635-2018.
Wofsy, S. C., et al. (2018), ATom: Merged Atmospheric Chemistry, Trace Gases, and Aerosols, Ornl Daac, doi:10.3334/ORNLDAAC/1581.
Perring, A., et al. (2017), In situ measurements of water uptake by black carbon-containing aerosol in wildfire plumes, J. Geophys. Res., 122, 1086-1097, doi:10.1002/2016JD025688.
Zhang, Y., et al. (2017), Top-of-atmosphere radiative forcing affected by brown carbon in the upper troposphere, Nature Geoscience, 10, 486, doi:10.1038/NGEO2960.
Brock, C., et al. (2016), Aerosol optical properties in the southeastern United States in summer – Part 2: Sensitivity of aerosol optical depth to relative humidity and aerosol parameters, Atmos. Chem. Phys., 16, 5009-5019, doi:10.5194/acp-16-5009-2016.
Brock, C., et al. (2016), Aerosol optical properties in the southeastern United States in summer – Part 1: Hygroscopic growth, Atmos. Chem. Phys., 16, 4987-5007, doi:10.5194/acp-16-4987-2016.
Kremser, S., et al. (2016), Stratospheric aerosol—Observations, processes, and impact on climate, Rev. Geophys., 54, doi:10.1002/2015RG000511.
Liu, X., et al. (2016), Agricultural fires in the southeastern U.S. during SEAC4RS: Emissions of trace gases and particles and evolution of ozone, reactive nitrogen, and organic aerosol, J. Geophys. Res., 121, 7383-7414, doi:10.1002/2016JD025040.
Shingler, T., et al. (2016), Airborne characterization of subsaturated aerosol hygroscopicity and dry refractive index from the surface to 6.5km during the SEAC4RS campaign, J. Geophys. Res., 121, 4188-4210, doi:10.1002/2015JD024498.
Yu, P., et al. (2016), Surface dimming by the 2013 Rim Fire simulated by a sectional aerosol model, J. Geophys. Res., 121, 7079-7087, doi:10.1002/2015JD024702.
Forrister, H., et al. (2015), Evolution of brown carbon in wildfire plumes, Geophys. Res. Lett., 42, 4623-4630, doi:10.1002/2015GL063897.
Kim, P., et al. (2015), Sources, seasonality, and trends of southeast US aerosol: an integrated analysis of surface, aircraft, and satellite observations with the GEOS-Chem chemical transport model, Atmos. Chem. Phys., 15, 10411-10433, doi:10.5194/acp-15-10411-2015.
Liu, J., et al. (2015), Brown carbon aerosol in the North American continental troposphere: sources, abundance, and radiative forcing, Atmos. Chem. Phys., 15, 7841-7858, doi:10.5194/acp-15-7841-2015.
Saide Peralta, et al. (2015), Revealing important nocturnal and day-to-day variations in fire smoke emissions through a multiplatform inversion, Geophys. Res. Lett., 42, 3609-3618, doi:10.1002/2015GL063737.
Wagner, N. L., et al. (2015), In situ vertical profiles of aerosol extinction, mass, and composition over the southeast United States during SENEX and SEAC4RS: observations of a modest aerosol enhancement aloft, Atmos. Chem. Phys., 15, 7085-7102, doi:10.5194/acp-15-7085-2015.
Murphy, D., et al. (2014), Observations of the chemical composition of stratospheric aerosol particles, Q. J. R. Meteorol. Soc., 140, 1269-1278, doi:10.1002/qj.2213.
Samset, B. H., et al. (2014), Modelled black carbon radiative forcing and atmospheric lifetime in AeroCom Phase II constrained by aircraft observations, Atmos. Chem. Phys., 14, 12465-12477, doi:10.5194/acp-14-12465-2014.
Bond, T. C., et al. (2013), Bounding the role of black carbon in the climate system: A scientific assessment, J. Geophys. Res., 118, 5380-5552, doi:10.1002/jgrd.50171.
Gao, R., et al. (2013), A High-Sensitivity Low-Cost Optical Particle Counter Design, Aerosol Science and Technology, 47, 137-145, doi:10.1080/02786826.2012.733039.
Perring, A., et al. (2013), Evaluation of a Perpendicular Inlet for Airborne Sampling of Interstitial Submicron Black-Carbon Aerosol, Aerosol Sci. Tech., 47, 1066-1072, doi:10.1080/02786826.2013.821196.
Brock, C., et al. (2011), Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project, Atmos. Chem. Phys., 11, 2423-2453, doi:10.5194/acp-11-2423-2011.
Huang, X.-F., et al. (2011), Black carbon measurements in the Pearl River Delta region of China, J. Geophys. Res., 116.
McHaughton, C. S., et al. (2011), Absorbing aerosols in the troposphere of the Western Arctic during the 2008 ACTAS/ARCPAC airborne field campaigns, Atmos. Chem. Phys., 11, 7561-7582, doi:10.5194/acp-11-7515-2011.
McNaughton, C. S., et al. (2011), Absorbing aerosol in the troposphere of the Western Arctic during the 2008 ARCTAS/ARCPAC airborne field campaigns, Atmos. Chem. Phys., 11, 7561-7582, doi:10.5194/acp-11-7561-2011.
Spackman, R., et al. (2011), Seasonal variability of black carbon mass in the tropical tropopause layer, Geophys. Res. Lett., 38, L09803, doi:10.1029/2010GL046343.
Wofsy, S. C., et al. (2011), HIAPER Pole-to-Pole Observations (HIPPO): Fine-grained, global scale measurements of climatically important atmospheric gases and aerosols, Philosophical Transactions of the Royal Society of London A, 369, 2073-2086, doi:10.1098/rsta.2010.0313.
Spackman, R., et al. (2010), Aircraft observations of enhancement and depletion of black carbon mass in the springtime Arctic, Atmos. Chem. Phys., 10, 9667-9680, doi:10.5194/acp-10-9667-2010.
Koch, D., et al. (2009), Evaluation of black carbon estimations in global aerosol models, Atmos. Chem. Phys., 9, 9001-9026, doi:10.5194/acp-9-9001-2009.
Myhre, G., et al. (2009), Modelled radiative forcing of the direct aerosol effect with multi-observation evaluation, Atmos. Chem. Phys., 9, 1365-1392, doi:10.5194/acp-9-1365-2009.
Gao, R., et al. (2008), Calculations of solar shortwave heating rates due to black carbon and ozone absorption using in situ measurements, J. Geophys. Res., 113, D14203, doi:10.1029/2007JD009358.
Gao, R., et al. (2008), Calculations of solar shortwave heating rates due to black carbon and ozone absorption using in situ measurements, J. Geophys. Res., 113, D14203, doi:10.1029/2007JD009358.
Spackman, R., et al. (2008), Empirical correlations between black carbon aerosol and carbon monoxide in the lower and middle troposphere, Geophys. Res. Lett., 35, L19816, doi:10.1029/2008GL035237.
Gao, R., et al. (2007), A Novel Method for Estimating Light-Scattering Properties of Soot Aerosols Using a Modified Single-Particle Soot Photometer, Aerosol Sci. Tech., 41, 125-135, doi:10.1080/02786820601118398.

Note: Only publications that have been uploaded to the ESD Publications database are listed here.

NASA - National Aeronautics and Space Administration

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