Grantee Research Project Results
Final Report: Cloud Condensation Nuclei Measurements During the SENEX 2013 Campaign: Observations, Analysis and Impacts
EPA Grant Number: R835410Title: Cloud Condensation Nuclei Measurements During the SENEX 2013 Campaign: Observations, Analysis and Impacts
Investigators: Nenes, Athanasios
Institution: Georgia Institute of Technology
EPA Project Officer: Chung, Serena
Project Period: June 15, 2013 through June 14, 2016 (Extended to June 14, 2017)
Project Amount: $185,790
RFA: Anthropogenic Influences on Organic Aerosol Formation and Regional Climate Implications (2012) RFA Text | Recipients Lists
Research Category: Air Quality and Air Toxics , Air , Climate Change
Objective:
Measurements of cloud condensation nuclei (CCN) data collected aboard the NOAA WP-3D during the June-July 2013 Southeast Atmosphere Study (SENEX 2013), and on the ground at the Centerville SOAS site toaddress the following scientific questions:
1. What are the hygroscopicity, CCN activity and activation kinetics of aerosols in the Southeast United States (SE US)? How do these parameters relate to aerosol chemical composition and size distribution? What is the spatiotemporal evolution of these parameters?
2. How does this evolution affect CCN activity, hygroscopicity, and droplet activation kinetics of aerosol?
3. What are the similarities and differences of SE US aerosol against other locations of the globe (urban, rural, continental, remote, anthropogenic, biogenic, biomass burning)? How does the mixing of anthropogenic and biogenic aerosol precursors affect observed hygroscopicity and activation kinetics?
4. What is the indirect forcing associated with SE US aerosol? How complex should be the size distribution-composition-CCN-activity relationship, to adequately represent the aerosol-CCN link?
Summary/Accomplishments (Outputs/Outcomes):
- Secondary organic aerosol from isoprene oxidation contributes about 25% of the water uptake associated with organic aerosol, with the other factors (more oxidized oxidized organic aerosol (MO-OOA): 40-50%; less oxidized oxidized organic aerosol (LO-OOA): 5-30%) contributing the remaining hygroscopicity. Remarkably, these variations are in a way that create an organic aerosol with effectively constant hygroscopicity.
- Oxidation state of organic aerosol does not necessarily relate to the organic hygroscopicity. This adds to the mounting evidence contradicting the established belief that a larger degree of oxidation implies a higher hygroscopicity. In our data we find that Isoprene organic aerosol, although the least oxidized of all organic aerosol components, is the most hygroscopic of all aerosol.
- The overall hygroscopicity of aerosol, when considering the effects of total organic matter and inorganic soluble species, tends to agree with established literature.
- In all the CCN data collected, we do not find evidence of organic films "slowing down" the growth of particles into cloud droplets.
- Although the aerosol and CCN data displayed considerable variability in the boundary layer droplet number that would form in relevant clouds displayed considerable insensitivity to aerosol fluctuations. Sensitivity to aerosol fluctuations emerge only outside of the boundary layer, when concentrations drop and competition for water vapor during droplet formation is reduced.
Journal Articles on this Report : 15 Displayed | Download in RIS Format
| Other project views: | All 19 publications | 19 publications in selected types | All 19 journal articles |
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Budisulistiorini SH, Li X, Bairai ST, Renfro J, Liu Y, Liu YJ, McKinney KA, Martin ST, McNeill VF, Pye HOT, Nenes A, Neff ME, Stone EA, Mueller S, Knote C, Shaw SL, Zhang Z, Gold A, Surratt JD. Examining the effects of anthropogenic emissions on isoprene-derived secondary organic aerosol formation during the 2013 Southern Oxidant and Aerosol Study (SOAS) at the Look Rock, Tennessee ground site. Atmospheric Chemistry and Physics 2015;15(15):8871-8888. |
R835410 (2013) R835410 (2014) R835410 (2015) R835410 (Final) R835401 (2014) R835401 (Final) R835404 (2014) R835404 (2015) R835404 (Final) |
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Budisulistiorini SH, Nenes A, Carlton AG, Surratt JD, McNeill VF, Pye HOT. Simulating aqueous-phase isoprene-epoxydiol (IEPOX) secondary organic aerosol production during the 2013 Southern Oxidant and Aerosol Study (SOAS). Environmental Science & Technology 2017;51(9):5026-5034. |
R835410 (2013) R835410 (Final) R835404 (2015) R835404 (Final) |
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Carlton AG, de Gouw J, Jimenez JL, Ambrose JL, Attwood AR, Brown S, Baker KR, Brock C, Cohen RC, Edgerton S, Farkas CM, Farmer D, Goldstein AH, Gratz L Guenther A, Hunt S, Jaegle L, Jaffe DA, Mak J, McClure C, Nenes A, Nguyen TK, Pierce JR, de Sa, S, Selin NE, Shah V, Shaw S, Shepson PB, Song S, Stutz J, Surratt JD, Turpin BJ, Warneke C, Washenfelder RA, Wennberg PO, Zhou X. Synthesis of the southeast atmosphere studies: investigating fundamental atmospheric chemistry questions. Bulletin of the American Meteorological Society 2018;99(3):547-567. |
R835410 (Final) R835404 (Final) R835407 (Final) R835412 (Final) R835877 (2018) R835877 (2019) |
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Cerully KM, Hite Jr. JR, McLaughlin M, Nenes A. Toward the determination of joint volatility-hygroscopicity distributions:development and response characterization for single-component aerosol. Aerosol Science and Technology 2014;48(3):296-312. |
R835410 (2013) R835410 (2014) R835410 (2015) R835410 (Final) |
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Cerully KM, Bougiatioti A, Hite Jr. JR, Guo H, Xu L, Ng NL, Weber R, Nenes A. On the link between hygroscopicity, volatility, and oxidation state of ambient and water-soluble aerosols in the southeastern United States. Atmospheric Chemistry and Physics 2015;15(15):8679-8694. |
R835410 (2013) R835410 (2014) R835410 (2015) R835410 (Final) |
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Guo H, Xu L, Bougiatioti A, Cerully KM, Capps SL, Hite Jr. JR, Carlton AG, Lee S-H, Bergin MH, Ng NL, Nenes A, Weber RJ. Fine-particle water and pH in the southeastern United States. Atmospheric Chemistry and Physics 2015;15(9):5211-5228. |
R835410 (2013) R835410 (2014) R835410 (2015) R835410 (Final) R834799 (2015) R834799 (2016) R834799 (Final) R834799C001 (2015) R834799C001 (Final) R835041 (2015) R835041 (Final) |
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Kostenidou E, Karnezi E, Hite Jr. JR, Bougiatioti A, Cerully K, Xu L, Ng NL, Nenes A, Pandis SN. Organic aerosol in the summertime southeastern United States: components and their link to volatility distribution, oxidation state and hygroscopicity. Atmospheric Chemistry and Physics 2018;18(8):5799-5819. |
R835410 (Final) R835403 (Final) R835405 (Final) |
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Lee S-H, Uin J, Guenther AB, de Gouw JA, Yu F, Nadykto AB, Herb J, Ng NL, Koss A, Brune WHi, Baumann K, Kanawade VP, Keutsch FN, Nenes A, Olsen K, Goldstein A, Ouyang Q. Isoprene suppression of new particle formation:potential mechanisms and implications. Journal of Geophysical Research-Atmospheres 2016;121(24):14621-14635. |
R835410 (2013) R835410 (Final) |
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Pye HOT, Murphy BN, Xu L, Ng NL, Carlton AG, Guo H, Weber R, Vasilakos P, Appel KW, Budisulistiorini SH, Surratt JD, Nenes A, Hu W, Jimenez JL, Isaacman-VanWertz G, Misztal PK, Goldstein AH. On the implications of aerosol liquid water and phase separation for organic aerosol mass. Atmospheric Chemistry & Physics 2017;17(1):343-369. |
R835410 (Final) R835403 (2015) R835403 (Final) R835404 (2015) R835404 (Final) R835407 (Final) R835412 (Final) R835877 (2016) R835877 (2017) R835877 (2018) R835877 (2019) |
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Raatikainen T, Lin JJ, Cerully KM, Lathem TL, Moore RH, Nenes A. CCN data interpretation under dynamic operation conditions. Aerosol Science and Technology 2014;48(5):552-561. |
R835410 (2013) R835410 (2014) R835410 (Final) |
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Rastak N, Pajunoja A, Acosta Navarro JC, Ma J, Song M, Partridge DG, Kirkevag A, Leong Y, Hu WW, Taylor NF, Lambe A, Cerully K, Bougiatioti A, Liu P, Krejci R, Petaja T, Percival C, Davidovits P, Worsnop DR, Ekman AML, Nenes A, Martin S, Jimenez JL, Collins DR, Topping DO, Bertram AK, Zuend A, Virtanen A, Riipinen I. Microphysical explanation of the RH-dependent water affinity of biogenic organic aerosol and its importance for climate. Geophysical Research Letters 2017;44(10):5167-5177. |
R835410 (2013) R835410 (Final) |
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Warneke C, Trainer M, de Gouw JA, Parrish DD, Fahey DW, Ravishankara AR, Middlebrook AM, Brock CA, Roberts JM, Brown SS, Neuman JA, Lerner BM, Lack D, Law D, Hubler G, Pollack I, Sjostedt S, Ryerson TB, Gilman JB, Liao J, Holloway J, Peischl J, Nowak JB, Aikin KC, Min K-E, Washenfelder RA, Graus MG, Richardson M, Markovic MZ, Wagner NL, Welti A, Veres PR, Edwards P, Schwarz JP, Gordon T, Dube WP, McKeen SA, Brioude J, Ahmadov R, Bougiatioti A, Lin JJ, Nenes A, Wolfe GM, Hanisco TF, Lee BH, Lopez-Hilfiker FD, Thornton JA, Keutsch FN, Kaiser J, Mao J, Hatch CD. Instrumentation and measurement strategy for the NOAA SENEX aircraft campaign as part of the Southeast Atmosphere Study 2013. Atmospheric Measurement Techniques 2016;9(7):3063-3093. |
R835410 (2013) R835410 (2014) R835410 (2015) R835410 (Final) R835406 (Final) |
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Weber RJ, Guo H, Russell AG, Nenes A. High aerosol acidity despite declining atmospheric sulfate concentrations over the past 15 years. Nature Geoscience 2016;9:282-285. |
R835410 (2013) R835410 (2014) R835410 (2015) R835410 (Final) R834799 (2016) R834799 (Final) R834799C001 (Final) |
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Xu L, Guo H, Boyd CM, Klein M, Bougiatioti A, Cerully KM, Hite JR, Isaacman-VanWertz G, Kreisberg NM, Knote C, Olson K, Koss A, Goldstein AH, Hering SV, de Gouw JA, Baumann K, Lee S-H, Nenes A, Weber RJ, Ng NL. Effects of anthropogenic emissions on aerosol formation from isoprene and monoterpenes in the southeastern United States. Proceedings of the National Academy of Sciences of the United States of America 2015;112(1):37-42. |
R835410 (2013) R835410 (2014) R835410 (2015) R835410 (Final) R834799 (2015) R834799 (2016) R834799 (Final) R834799C001 (2015) R834799C001 (Final) R835403 (2014) R835403 (2015) R835403 (Final) |
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Xu L, Middlebrook AM, Liao J, de Gouw JA, Guo H, Weber RJ, Nenes A, Lopez-Hilfiker FD, Lee BH, Thornton JA, Brock CA, Neuman JA, Nowak JB, Pollack IB, Welti A, Graus M, Warneke C, Ng NL. Enhanced formation of isoprene-derived organic aerosol in sulfur-rich power plant plumes during Southeast Nexus. Journal of Geophysical Research: Atmospheres 2016;121(18):11137-11153. |
R835410 (2013) R835410 (2015) R835410 (Final) R835403 (Final) |
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Supplemental Keywords:
CCN, Hygroscopicity, Volatility, Droplet formation, Clouds, Measurements, Modeling, Climate ChangeRelevant Websites:
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Progress and Final Reports:
Original AbstractThe perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.