Limited impact of sulfate-driven chemistry on black carbon aerosol aging in power plant plumes

Z. Markovic, Milos; E. Perring, Anne; Gao, Ru-Shan; Liao, Jin; Welti, Andre; L. Wagner, Nick; B. Pollack, Ilana; M. Middlebrook, Ann; B. Ryerson, Thomas; K. Trainer, Michael; Warneke, Carsten; A. de Gouw, Joost; W. Fahey, David; Stier, Philip; P. Schwarz, Joshua

doi:10.3934/environsci.2018.3.195

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Limited impact of sulfate-driven chemistry on black carbon aerosol aging in power plant plumes

2018
By Z. Markovic, Milos ; E. Perring, Anne ; Gao, Ru-Shan ; ...
Source: AIMS Environmental Science, 2018, 5(3): 195-215.

[PDF-1.29 MB]

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Journal Title:

AIMS Environmental Science
Personal Author:

Z. Markovic, Milos ; E. Perring, Anne ; Gao, Ru-Shan ; Liao, Jin ; Welti, Andre ; ... More +

Z. Markovic, Milos ; E. Perring, Anne ; Gao, Ru-Shan ; Liao, Jin ; Welti, Andre ; L. Wagner, Nick ; B. Pollack, Ilana ; M. Middlebrook, Ann ; B. Ryerson, Thomas ; K. Trainer, Michael ; Warneke, Carsten ; A. de Gouw, Joost ; W. Fahey, David ; Stier, Philip ; P. Schwarz, Joshua Less -
NOAA Program & Office:

CIRES (Cooperative Institute for Research in Environmental Sciences) ; OAR (Oceanic and Atmospheric Administration) ; ESRL (Earth System Research Laboratory) ; CSL (Chemical Sciences Laboratory) ; CPO (Climate Program Office)

CIRES (Cooperative Institute for Research in Environmental Sciences) ; OAR (Oceanic and Atmospheric Administration) ; ESRL (Earth System Research Laboratory) ; CSL (Chemical Sciences Laboratory) ; CPO (Climate Program Office) Less -
Description:

The aging of refractory black carbon (rBC) aerosol by sulfate-driven chemistry has been constrained in coal-fired power-plant plumes using the NOAA WP-3D research aircraft during the Southern Nexus (SENEX) study, which took place in the Southeastern US in June and July of 2013. A Single Particle Soot Photometer (SP2) determined the microphysical properties of rBC-containing particles including single-particle rBC mass and the presence and amount of internally-mixed non-rBC material, hereafter referred to as “coatings”. Most power-plant influenced air was associated with very slightly increased amounts of non-refractory material, likely sulfate internally mixed with the rBC, however this increase was statistically insignificant even after semi-Lagrangian exposure for up to 5 h. On average, the increase in coating thickness was 2 ± 4 nm for particles containing 3–5 fg rBC. Similarly, the number fraction of rBC-containing particles that could be identified as internally mixed was increased by plume chemistry by only 1.3 ± 1.3%. These direct measurements of microphysical aging of rBC-containing aerosol by power plant emissions constrain the enhancement of sulfate chemistry on both rBC’s column-integrated absorption optical depth, and rBC-containing aerosol’s ability to act as cloud condensation nuclei. Appling Mie and k-Köhler theories to the SP2 observations, permits the resulting effect on rBC ambient light-absorption to be capped at the 2–6% level.
Keywords:

[+]

Aerosols Atmospheric Chemistry Soot
Source:

AIMS Environmental Science, 2018, 5(3): 195-215.
DOI:

https://doi.org/10.3934/environsci.2018.3.195
Document Type:

Journal Article
Place as Subject:

United States
Rights Information:

CC BY
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Submitted
Main Document Checksum:

[+]

urn:sha256:8778f7da498e083a4aabb792ae5898cc6e71687efe5558128bdb2492cf4bc2cc
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https://repository.library.noaa.gov/view/noaa/26533/noaa_26533_DS1.pdf
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Limited impact of sulfate-driven chemistry on black carbon aerosol aging in power plant plumes

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