Cooperative Institute for Research in Environmental Sciences at the University of Colorado Boulder

Hongyu Guo

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  • Zeng L; Dibb J; Scheuer E; Katich JM; Schwarz JP; Bourgeois I; Peischl J; Ryerson T; Warneke C; Perring AE. (Jun 2022). Characteristics and evolution of brown carbon in western United States wildfires. Atmospheric Chemistry and Physics , 22(12), 8009-8036. 10.5194/acp-22-8009-2022
  • Stockwell CE; Bela MM; Coggon MM; Gkatzelis GI; Wiggins E; Gargulinski EM; Shingler T; Fenn M; Griffin D; Holmes CD. (May 2022). Airborne Emission Rate Measurements Validate Remote Sensing Observations and Emission Inventories of Western U.S. Wildfires. Environmental Science and Technology (Washington). 10.1021/acs.est.1c07121
  • Day DA; Campuzano-Jost P; Nault BA; Palm BB; Hu W; Guo H; Wooldridge PJ; Cohen RC; Docherty KS; Huffman JA. (Jan 2022). A systematic re-evaluation of methods for quantification of bulk particle-phase organic nitrates using real-time aerosol mass spectrometry. Atmospheric Measurement Techniques , 15(2), 459-483. 10.5194/amt-15-459-2022
  • Adachi K; Dibb JE; Scheuer E; Katich JM; Schwarz JP; Perring AE; Mediavilla B; Guo H; Campuzano‐Jost P; Jimenez JL. (Jan 2022). Fine ash‐bearing particles as a major aerosol component in biomass burning smoke. Journal of Geophysical Research: Atmospheres. 10.1029/2021jd035657
  • Wiggins EB; Anderson BE; Brown MD; Campuzano‐Jost P; Chen G; Crawford J; Crosbie EC; Dibb J; DiGangi JP; Diskin GS. (Dec 2021). Reconciling Assumptions in Bottom‐up and Top‐down Approaches for Estimating Aerosol Emission Rates from Wildland Fires using Observations from FIREX‐AQ. Journal of Geophysical Research: Atmospheres. 10.1029/2021jd035692
  • Xu L; Crounse JD; Vasquez KT; Allen H; Wennberg PO; Bourgeois I; Brown SS; Campuzano-Jost P; Coggon MM; Crawford JH. (Dec 2021). Ozone chemistry in western US wildfire plumes. Science Advances , 7(50). 10.1126/sciadv.abl3648
  • Joo T; Chen Y; Xu W; Croteau P; Canagaratna MR; Gao D; Guo H; Saavedra G; Kim SS; Sun Y. (Oct 2021). Evaluation of a New Aerosol Chemical Speciation Monitor (ACSM) System at an Urban Site in Atlanta, GA: The Use of Capture Vaporizer and PM2.5 Inlet. ACS Earth and Space Chemistry , 5(10), 2565-2576. 10.1021/acsearthspacechem.1c00173
  • Moore RH; Wiggins EB; Ahern AT; Zimmerman S; Montgomery L; Jost PC; Robinson CE; Ziemba LD; Winstead EL; Anderson BE. (Jun 2021). Sizing response of the Ultra-High Sensitivity Aerosol Spectrometer (UHSAS) and Laser Aerosol Spectrometer (LAS) to changes in submicron aerosol composition and refractive index. Atmospheric Measurement Techniques , 14(6), 4517-4542. 10.5194/amt-14-4517-2021
  • Zhang B; Shen H; Liu P; Guo H; Hu Y; Chen Y; Xie S; Xi Z; Skipper TN; Russell AG. (Jun 2021). Significant contrasts in aerosol acidity between China and the United States. Atmospheric Chemistry and Physics , 21(10), 8341-8356. 10.5194/acp-21-8341-2021
  • Katz EF; Guo H; Campuzano-Jost P; Day DA; Brown WL; Boedicker E; Pothier M; Lunderberg DM; Patel S; Patel K. (May 2021). Quantification of cooking organic aerosol in the indoor environment using aerodyne aerosol mass spectrometers. Aerosol Science and Technology. 10.1080/02786826.2021.1931013
  • Guo H; Campuzano-Jost P; Nault BA; Day DA; Schroder JC; Kim D; Dibb JE; Dollner M; Weinzierl B; Jimenez JL. (May 2021). The importance of size ranges in aerosol instrument intercomparisons: a case study for the Atmospheric Tomography Mission. Atmospheric Measurement Techniques , 14(5), 3631-3655. 10.5194/amt-14-3631-2021
  • Chen Y; Guo H; Nah T; Tanner DJ; Sullivan AP; Takeuchi M; Gao Z; Vasilakos P; Russell AG; Baumann K. (Apr 2021). Low-Molecular-Weight Carboxylic Acids in the Southeastern US: Formation, Partitioning, and Implications for Organic Aerosol Aging. Environmental Science and Technology (Washington) , 55(10), 6688-6699. 10.1021/acs.est.1c01413
  • Pagonis D; Campuzano-Jost P; Guo H; Day DA; Schueneman MK; Brown WL; Nault BA; Stark H; Siemens K; Laskin A. (Feb 2021). Airborne extractive electrospray mass spectrometry measurements of the chemical composition of organic aerosol. Atmospheric Measurement Techniques , 14(2), 1545-1559. 10.5194/amt-14-1545-2021
  • Nault BA; Campuzano-Jost P; Day DA; Guo H; Jo DS; Handschy A; Pagonis D; Schroder JC; Schueneman MK; Cubison MJ. (Nov 2020). Interferences with aerosol acidity quantification due to gas-phase ammonia uptake onto acidic sulfate filter samples. Atmospheric Measurement Techniques , 13(11), 6193-6213. 10.5194/amt-13-6193-2020
  • Xu, J; Chen, J; Zhao, N; Wang, GC; Yu, GY; Li, H; Huo, JT; Lin, YF; Fu, QY; Guo, HY; Deng, CR; Lee, SH; Chen, JM; Huang, K. (Jun 2020). Importance of gas-particle partitioning of ammonia in haze formation in the rural agricultural environment. ATMOSPHERIC CHEMISTRY AND PHYSICS , 20(12). 10.5194/acp-20-7259-2020
  • Koenig TK; Baidar S; Campuzano-Jost P; Cuevas CA; Dix B; Fernandez RP; Guo H; Hall SR; Kinnison D; Nault BA. (Jan 2020). Quantitative detection of iodine in the stratosphere. Proceedings of the National Academy of Sciences of USA , 117(4), 1860-1866. 10.1073/pnas.1916828117
  • Haskins JD; Lopez-Hilfiker FD; Lee BH; Shah V; Wolfe GM; DiGangi J; Fibiger D; McDuffie EE; Veres P; Schroder JC. (Dec 2019). Anthropogenic Control Over Wintertime Oxidation of Atmospheric Pollutants. Geophysical Research Letters , 46(24), 14826-14835. 10.1029/2019GL085498
  • Liu C; Wang H; Guo H. (May 2019). Redistribution of PM2.5-associated nitrate and ammonium during outdoor-to-indoor transport. Indoor Air: international journal of indoor air quality and climate , 29(3), 460-468. 10.1111/ina.12549
  • Sullivan, AP; Guo, H; Schroder, JC; Campuzano-Jost, P; Jimenez, JL; Campos, T; Shah, V; Jaegle, L; Lee, BH; Lopez-Hilfiker, FD; Thornton, JA; Brown, SS; Weber, RJ. (Feb 2019). Biomass Burning Markers and Residential Burning in the WINTER Aircraft Campaign. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 124(3). 10.1029/2017JD028153
  • Haskins, JD, L Jaegle, V Shah, BH Lee, FD Lopez-Hilfiker, P Campuzano-Jost, JC Schroder, DA Day, HY Guo, AP Sullivan, R Weber, J Dibb, T Campos, JL Jimenez, SS Brown and JA Thornton. (Dec 2018). Wintertime Gas-Particle Partitioning and Speciation of Inorganic Chlorine in the Lower Troposphere Over the Northeast United States and Coastal Ocean. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 123(22). 10.1029/2018JD028786
  • McDuffie, EE, DL Fibiger, WP Dube, FL Hilfiker, BH Lee, L Jaegle, HY Guo, RJ Weber, JM Reeves, AJ Weinheimer, JC Schroder, P Campuzano-Jost, JL Jimenez, JE Dibb, P Veres, C Ebben, TL Sparks, PJ Wooldridge, RC Cohen, T Campos, SR Hall, K Ullmann, JM Roberts, JA Thornton and SS Brown. (Dec 2018). ClNO2 Yields From Aircraft Measurements During the 2015 WINTER Campaign and Critical Evaluation of the Current Parameterization. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 123(22). 10.1029/2018JD029358
  • Guo H; Nenes A; Weber RJ. (Dec 2018). The underappreciated role of nonvolatile cations in aerosol ammonium-sulfate molar ratios. Atmospheric Chemistry and Physics , 18(23), 17307-17323. 10.5194/acp-18-17307-2018
  • Jaegle, L, V Shah, JA Thornton, FD Lopez-Hilfiker, BH Lee, EE McDuffie, D Fibiger, SS Brown, P Veres, TL Sparks, CJ Ebben, PJ Wooldridge, HS Kenagy, RC Cohen, AJ Weinheimer, TL Campos, DD Montzka, JP Digangi, GM Wolfe, T Hanisco, JC Schroder, P Campuzano-Jost, DA Day, JL Jimenez, AP Sullivan, H Guo and RJ Weber. (Nov 2018). Nitrogen Oxides Emissions, Chemistry, Deposition, and Export Over the Northeast United States During the WINTER Aircraft Campaign. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 123(21). 10.1029/2018JD029133
  • Nah T; Ji Y; Tanner DJ; Guo H; Sullivan AP; Ng NL; Weber RJ; Huey LG. (Sep 2018). Real-time measurements of gas-phase organic acids using SF(6)(- )chemical ionization mass spectrometry. Atmospheric Measurement Techniques , 11(9), 5087-5104. 10.5194/amt-11-5087-2018
  • Guo H; Otjes R; Schlag P; Kiendler-Scharr A; Nenes A; Weber RJ. (Aug 2018). Effectiveness of ammonia reduction on control of fine particle nitrate. Atmospheric Chemistry and Physics , 18(16), 12241-12256. 10.5194/acp-18-12241-2018
  • Nah T; Guo H; Sullivan AP; Chen Y; Tanner DJ; Nenes A; Russell A; Ng NL; Huey LG; Weber RJ. (Aug 2018). Characterization of aerosol composition, aerosol acidity, and organic acid partitioning at an agriculturally intensive rural southeastern US site. Atmospheric Chemistry and Physics , 18(15), 11471-11491. 10.5194/acp-18-11471-2018
  • Shah, V, L Jaegle, JA Thornton, FD Lopez-Hilfiker, BH Lee, JC Schroder, P Campuzano-Jost, JL Jimenez, HY Guo, AP Sullivan, RJ Weber, JR Green, MN Fiddler, S Bililign, TL Campos, M Stell, AJ Weinheimer, DD Montzka and SS Brown. (Aug 2018). Chemical feedbacks weaken the wintertime response of particulate sulfate and nitrate to emissions reductions over the eastern United States. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA , 115(32). 10.1073/pnas.1803295115
  • Hettiyadura AP; Xu L; Jayarathne T; Skog K; Guo H; Weber RJ; Nenes A; Keutsch FN; Ng NL; Stone EA. (Aug 2018). Source apportionment of organic carbon in Centreville, AL using organosulfates in organic tracer-based positive matrix factorization. Atmospheric Environment , 186, 74-88. 10.1016/j.atmosenv.2018.05.007
  • Schroder, JC, P Campuzano-Jost, DA Day, V Shah, K Larson, JM Sommers, AP Sullivan, T Campos, JM Reeves, A Hills, RS Hornbrook, NJ Blake, E Scheuer, H Guo, DL Fibiger, EE McDuffie, PL Hayes, RJ Weber, JE Dibb, EC Apel, L Jaegle, SS Brown, JA Thornton and JL Jimenez. (Jul 2018). Sources and Secondary Production of Organic Aerosols in the Northeastern United States during WINTER. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 123(14). 10.1029/2018JD028475
  • McDuffie, EE, DL Fibiger, WP Dube, F Lopez-Hilfiker, BH Lee, JA Thornton, V Shah, L Jaegle, HY Guo, RJ Weber, JM Reeves, AJ Weinheimer, JC Schroder, P Campuzano-Jost, JL Jimenez, JE Dibb, P Veres, C Ebben, TL Sparks, PJ Wooldridge, RC Cohen, RS Hornbrook, EC Apel, T Campos, SR Hall, K Ullmann and SS Brown. (Apr 2018). Heterogeneous N2O5 Uptake During Winter: Aircraft Measurements During the 2015 WINTER Campaign and Critical Evaluation of Current Parameterizations. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 123(8). 10.1002/2018JD028336
  • Li H; Zhang Q; Zheng B; Chen C; Wu N; Guo H; Zhang Y; Zheng Y; Li X; He K. (Apr 2018). Nitrate-driven urban haze pollution during summertime over the North China Plain. Atmospheric Chemistry and Physics , 18(8), 5293-5306. 10.5194/acp-18-5293-2018
  • Zhang, HF, LD Yee, BH Lee, MP Curtis, DR Worton, G Isaacman-VanWertz, JH Offenberg, M Lewandowski, TE Kleindienst, MR Beaver, AL Holder, WA Lonneman, KS Docherty, M Jaoui, HOT Pye, WW Hu, DA Day, P Campuzano-Jost, JL Jimenez, HY Guo, RJ Weber, J de Gouw, AR Koss, ES Edgerton, W Brune, C Mohr, FD Lopez-Hilfiker, A Lutz, NM Kreisberg, SR Spielman, SV Hering, KR Wilson, JA Thornton and AH Goldstein. (Feb 2018). Monoterpenes are the largest source of summertime organic aerosol in the southeastern United States. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA , 115(9). 10.1073/pnas.1717513115
  • Guo H; Weber RJ; Nenes A. (Sep 2017). High levels of ammonia do not raise fine particle pH sufficiently to yield nitrogen oxide-dominated sulfate production. Scientific Reports , 7. 10.1038/s41598-017-11704-0
  • Guo, HY, JM Liu, KD Froyd, JM Roberts, PR Veres, PL Hayes, JL Jimenez, A Nenes and RJ Weber. (May 2017). Fine particle pH and gas-particle phase partitioning of inorganic species in Pasadena, California, during the 2010 CalNex campaign. ATMOSPHERIC CHEMISTRY AND PHYSICS , 17(9). 10.5194/acp-17-5703-2017
  • Di Lorenzo RA; Washenfelder RA; Attwood AR; Guo H; Xu L; Ng NL; Weber RJ; Baumann K; Edgerton E; Youne CJ. (Mar 2017). Molecular -Size -Separated Brown Carbon Absorption for Biomass Burning Aerosol at Multiple Field Sites. Environmental Science and Technology (Washington) , 51(6), 3128-3137. 10.1021/acs.est.6b06160
  • Fang T; Guo H; Zeng L; Verma V; Nenes A; Weber RJ. (Mar 2017). Highly Acidic Ambient Particles, Soluble Metals, and Oxidative Potential: A Link between Sulfate and Aerosol Toxicity. Environmental Science and Technology (Washington) , 51(5), 2611-2620. 10.1021/acs.est.6b06151
  • Pye, HOT, BN Murphy, L Xu, NL Ng, AG Carlton, HY Guo, R Weber, P Vasilakos, KW Appel, SH Budisulistiorini, JD Surratt, A Nenes, WW Hu, JL Jimenez, G Isaacman-VanWertz, PK Misztal and AH Goldstein. (Jan 2017). On the implications of aerosol liquid water and phase separation for organic aerosol mass. ATMOSPHERIC CHEMISTRY AND PHYSICS , 17(1). 10.5194/acp-17-343-2017
  • Xu L; Guo H; Weber RJ; Ng NL. (Jan 2017). Chemical Characterization of Water-Soluble Organic Aerosol in Contrasting Rural and Urban Environments in the Southeastern United States. Environmental Science and Technology (Washington) , 51(1), 78-88. 10.1021/acs.est.6b05002
  • Xu, L, AM Middlebrook, J Liao, JA de Gouw, HY Guo, RJ Weber, A Nenes, FD Lopez-Hilfiker, BH Lee, JA Thornton, CA Brock, JA Neuman, JB Nowak, IB Pollack, A Welti, M Graus, C Warneke and NL Ng. (Sep 2016). Enhanced formation of isoprene-derived organic aerosol in sulfur-rich power plant plumes during Southeast Nexus. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 121(18). 10.1002/2016JD025156
  • Guo, H, AP Sullivan, P Campuzano-Jost, JC Schroder, FD Lopez-Hilfiker, JE Dibb, JL Jimenez, JA Thornton, SS Brown, A Nenes and RJ Weber. (Sep 2016). Fine particle pH and the partitioning of nitric acid during winter in the northeastern United States. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES , 121(17). 10.1002/2016JD025311
  • Weber RJ; Guo H; Russell AG; Nenes A. (Apr 2016). High aerosol acidity despite declining atmospheric sulfate concentrations over the past 15 years. Nature Geoscience , 9(4), 282-+. 10.1038/NGEO2665
  • Lee, BH, C Mohr, FD Lopez-Hilfiker, A Lutz, M Hallquist, L Lee, P Romer, RC Cohen, S Iyer, T Kurten, WW Hu, DA Day, P Campuzano-Jost, JL Jimenez, L Xu, NL Ng, HY Guo, RJ Weber, RJ Wild, SS Brown, A Koss, J de Gouw, K Olson, AH Goldstein, R Seco, S Kim, K McAvey, PB Shepson, T Starn, K Baumann, ES Edgerton, JM Liu, JE Shilling, DO Miller, W Brune, S Schobesberger, EL DAmbro and JA Thornton. (Feb 2016). Highly functionalized organic nitrates in the southeast United States: Contribution to secondary organic aerosol and reactive nitrogen budgets. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA , 113(6). 10.1073/pnas.1508108113
  • Rattanavaraha W; Chu K; Budisulistiorini H; Riva M; Lin Y-H; Edgerton ES; Baumann K; Shaw SL; Guo H; King L. (Jan 2016). Assessing the impact of anthropogenic pollution on isoprene-derived secondary organic aerosol formation in PM2.5 collected from the Birmingham, Alabama, ground site during the 2013 Southern Oxidant and Aerosol Study. Atmospheric Chemistry and Physics , 16(8), 4897-4914. 10.5194/acp-16-4897-2016
  • Washenfelder, RA, AR Attwood, CA Brock, H Guo, L Xu, RJ Weber, NL Ng, HM Allen, BR Ayres, K Baumann, RC Cohen, DC Draper, KC Duffey, E Edgerton, JL Fry, WW Hu, JL Jimenez, BB Palm, P Romer, EA Stone, PJ Wooldridge and SS Brown. (Jan 2015). Biomass burning dominates brown carbon absorption in the rural southeastern United States. GEOPHYSICAL RESEARCH LETTERS , 42(2). 10.1002/2014GL062444
  • Xu, L, HY Guo, CM Boyd, M Klein, A Bougiatioti, KM Cerully, JR Hite, G Isaacman-VanWertz, NM Kreisberg, C Knote, K Olson, A Koss, AH Goldstein, SV Hering, J de Gouw, K Baumann, SH Lee, A Nenes, RJ Weber and NL Ng. (Jan 2015). 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 , 112(1). 10.1073/pnas.1512279112
  • Fang T; Guo H; Verma V; Peltier RE; Weber RJ. (Jan 2015). PM2.5 water-soluble elements in the southeastern United States: automated analytical method development, spatiotemporal distributions, source apportionment, and implications for heath studies. Atmospheric Chemistry and Physics , 15(20), 11667-11682. 10.5194/acp-15-11667-2015
  • Fang T; Verma V; Guo H; King LE; Edgerton ES; Weber RJ. (Jan 2015). A semi-automated system for quantifying the oxidative potential of ambient particles in aqueous extracts using the dithiothreitol (DTT) assay: results from the Southeastern Center for Air Pollution and Epidemiology (SCAPE). Atmospheric Measurement Techniques , 8(1), 471-482. 10.5194/amt-8-471-2015
  • Guo H; Xu L; Bougiatioti A; Cerully KM; Capps SL; Hite JR; Carlton AG; Lee S-H; Bergin MH; Ng NL. (Jan 2015). Fine-particle water and pH in the southeastern United States. Atmospheric Chemistry and Physics , 15(9), 5211-5228. 10.5194/acp-15-5211-2015
  • Cerully KM; Bougiatioti A; Hite JR; Guo H; Xu L; Ng NL; Weber R; Nenes A. (Jan 2015). On the link between hygroscopicity, volatility, and oxidation state of ambient and water-soluble aerosols in the southeastern United States. Atmospheric Chemistry and Physics , 15(15), 8679-8694. 10.5194/acp-15-8679-2015
  • Xu L; Suresh S; Guo H; Weber RJ; Ng NL. (Jan 2015). Aerosol characterization over the southeastern United States using high-resolution aerosol mass spectrometry: spatial and seasonal variation of aerosol composition and sources with a focus on organic nitrates. Atmospheric Chemistry and Physics , 15(13), 7307-7336. 10.5194/acp-15-7307-2015
  • Verma V; Fang T; Guo H; King L; Bates JT; Peltier RE; Edgerton E; Russell AG; Weber RJ. (Jan 2014). Reactive oxygen species associated with water-soluble PM2.5 in the southeastern United States: spatiotemporal trends and source apportionment. Atmospheric Chemistry and Physics , 14(23), 12915-12930. 10.5194/acp-14-12915-2014
  • Nguyen TKV; Petters MD; Suda SR; Guo H; Weber RJ; Carlton AG. (Jan 2014). Trends in particle-phase liquid water during the Southern Oxidant and Aerosol Study. Atmospheric Chemistry and Physics , 14(20), 10911-10930. 10.5194/acp-14-10911-2014
  • You, Y, VP Kanawade, JA de Gouw, AB Guenther, S Madronich, MR Sierra-Hernandez, M Lawler, JN Smith, S Takahama, G Ruggeri, A Koss, K Olson, K Baumann, RJ Weber, A Nenes, H Guo, ES Edgerton, L Porcelli, WH Brune, AH Goldstein and SH Lee. (Jan 2014). Atmospheric amines and ammonia measured with a chemical ionization mass spectrometer (CIMS). ATMOSPHERIC CHEMISTRY AND PHYSICS , 14(22). 10.5194/acp-14-12181-2014
  • Liu J; Bergin M; Guo H; King L; Kotra N; Edgerton E; Weber RJ. (Jan 2013). Size-resolved measurements of brown carbon in water and methanol extracts and estimates of their contribution to ambient fine-particle light absorption. Atmospheric Chemistry and Physics , 13(24), 12389-12404. 10.5194/acp-13-12389-2013
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