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Karl D. Froyd, Ph.D. - Publications

Affiliations: 
2002 University of Colorado, Boulder, Boulder, CO, United States 
Area:
Physical Chemistry, Geophysics
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55 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2020 Zeng L, Zhang A, Wang Y, Wagner NL, Katich JM, Schwarz JP, Schill GP, Brock C, Froyd KD, Murphy DM, Williamson CJ, Kupc A, Scheuer E, Dibb J, Weber RJ. Global Measurements of Brown Carbon and Estimated Direct Radiative Effects. Geophysical Research Letters. 47: e2020GL088747. PMID 32728304 DOI: 10.1029/2020Gl088747  0.339
2020 Kupc A, Williamson CJ, Hodshire AL, Kazil J, Ray E, Bui TP, Dollner M, Froyd KD, McKain K, Rollins A, Schill GP, Thames A, Weinzierl BB, Pierce JR, Brock CA. The potential role of organics in new particle formation and initial growth in the remote tropical upper troposphere Atmospheric Chemistry and Physics. 1-38. DOI: 10.5194/Acp-2020-675  0.408
2020 Hodzic A, Campuzano-Jost P, Bian H, Chin M, Colarco PR, Day DA, Froyd KD, Heinold B, Jo DS, Katich JM, Kodros JK, Nault BA, Pierce JR, Ray E, Schacht J, et al. Characterization of organic aerosol across the global remote troposphere: a comparison of ATom measurements and global chemistry models Atmospheric Chemistry and Physics. 20: 4607-4635. DOI: 10.5194/Acp-20-4607-2020  0.385
2020 Schill GP, Froyd KD, Bian H, Kupc A, Williamson C, Brock CA, Ray E, Hornbrook RS, Hills AJ, Apel EC, Chin M, Colarco PR, Murphy DM. Widespread biomass burning smoke throughout the remote troposphere Nature Geoscience. 13: 422-427. DOI: 10.1038/S41561-020-0586-1  0.373
2019 Williamson CJ, Kupc A, Axisa D, Bilsback KR, Bui T, Campuzano-Jost P, Dollner M, Froyd KD, Hodshire AL, Jimenez JL, Kodros JK, Luo G, Murphy DM, Nault BA, Ray EA, et al. A large source of cloud condensation nuclei from new particle formation in the tropics. Nature. 574: 399-403. PMID 31619794 DOI: 10.1038/S41586-019-1638-9  0.409
2019 Froyd KD, Murphy DM, Brock CA, Campuzano-Jost P, Dibb JE, Jimenez J, Kupc A, Middlebrook AM, Schill GP, Thornhill KL, Williamson CJ, Wilson JC, Ziemba LD. A new method to quantify mineral dust and other aerosol species from aircraft platforms using single-particle mass spectrometry Atmospheric Measurement Techniques. 12: 6209-6239. DOI: 10.5194/Amt-12-6209-2019  0.42
2019 Brock CA, Williamson C, Kupc A, Froyd KD, Erdesz F, Wagner N, Richardson M, Schwarz JP, Gao R, Katich JM, Campuzano-Jost P, Nault BA, Schroder JC, Jimenez JL, Weinzierl B, et al. Aerosol size distributions during the Atmospheric Tomography Mission (ATom): methods, uncertainties, and data products Atmospheric Measurement Techniques. 12: 3081-3099. DOI: 10.5194/Amt-12-3081-2019  0.399
2019 Murphy DM, Froyd KD, Bian H, Brock CA, Dibb JE, DiGangi JP, Diskin G, Dollner M, Kupc A, Scheuer EM, Schill GP, Weinzierl B, Williamson CJ, Yu P. The distribution of sea-salt aerosol in the global troposphere Atmospheric Chemistry and Physics. 19: 4093-4104. DOI: 10.5194/Acp-19-4093-2019  0.385
2019 Zawadowicz MA, Froyd KD, Perring AE, Murphy DM, Spracklen DV, Heald CL, Buseck PR, Cziczo DJ. Model-measurement consistency and limits of bioaerosol abundance over the continental United States Atmospheric Chemistry and Physics. 19: 13859-13870. DOI: 10.5194/Acp-19-13859-2019  0.374
2019 Bian H, Froyd K, Murphy DM, Dibb J, Darmenov A, Chin M, Colarco PR, da Silva A, Kucsera TL, Schill G, Yu H, Bui P, Dollner M, Weinzierl B, Smirnov A. Observationally constrained analysis of sea salt aerosol in the marine atmosphere Atmospheric Chemistry and Physics. 19: 10773-10785. DOI: 10.5194/Acp-19-10773-2019  0.425
2019 Ullrich R, Hoose C, Cziczo DJ, Froyd KD, Schwarz JP, Perring AE, Bui TV, Schmitt CG, Vogel B, Rieger D, Leisner T, Möhler O. Comparison of Modeled and Measured Ice Nucleating Particle Composition in a Cirrus Cloud Journal of the Atmospheric Sciences. 76: 1015-1029. DOI: 10.1175/Jas-D-18-0034.1  0.375
2018 Murphy DM, Froyd KD, Apel E, Blake D, Blake N, Evangeliou N, Hornbrook RS, Peischl J, Ray E, Ryerson TB, Thompson C, Stohl A. An aerosol particle containing enriched uranium encountered in the remote upper troposphere. Journal of Environmental Radioactivity. 184: 95-100. PMID 29407642 DOI: 10.1016/J.Jenvrad.2018.01.006  0.36
2018 Jensen EJ, Kärcher B, Ueyama R, Pfister L, Bui TV, Diskin GS, DiGangi JP, Woods S, Lawson RP, Froyd KD, Murphy DM. Heterogeneous Ice Nucleation in the Tropical Tropopause Layer Journal of Geophysical Research: Atmospheres. 123: 12,210-12,227. DOI: 10.1029/2018Jd028949  0.367
2017 Zawadowicz MA, Froyd KD, Murphy DM, Cziczo DJ. Improved identification of primary biological aerosol particles using single-particle mass spectrometry Atmospheric Chemistry and Physics. 17: 7193-7212. DOI: 10.5194/Acp-17-7193-2017  0.386
2017 Guo H, Liu J, Froyd KD, Roberts JM, Veres PR, Hayes PL, Jimenez JL, Nenes A, Weber RJ. Fine particle pH and gas–particle phase partitioning of inorganic species in Pasadena, California, during the 2010 CalNex campaign Atmospheric Chemistry and Physics. 17: 5703-5719. DOI: 10.5194/Acp-17-5703-2017  0.32
2016 Yu P, Toon OB, Bardeen CG, Bucholtz A, Rosenlof KH, Saide PE, Da Silva A, Ziemba LD, Thornhill KL, Jimenez JL, Campuzano-Jost P, Schwarz JP, Perring AE, Froyd KD, Wagner NL, et al. Surface dimming by the 2013 Rim Fire simulated by a sectional aerosol model. Journal of Geophysical Research. Atmospheres : Jgr. 121: 7079-7087. PMID 27867782 DOI: 10.1002/2015Jd024702  0.337
2016 Marais EA, Jacob DJ, Jimenez JL, Campuzano-Jost P, Day DA, Hu W, Krechmer J, Zhu L, Kim PS, Miller CC, Fisher JA, Travis K, Yu K, Hanisco TF, Wolfe GM, ... ... Froyd KD, et al. Aqueous-phase mechanism for secondary organic aerosol formation from isoprene: Application to the southeast United States and co-benefit of SO2 emission controls Atmospheric Chemistry and Physics. 16: 1603-1618. DOI: 10.5194/Acp-16-1603-2016  0.332
2016 Yu P, Murphy DM, Portmann RW, Toon OB, Froyd KD, Rollins AW, Gao RS, Rosenlof KH. Radiative forcing from anthropogenic sulfur and organic emissions reaching the stratosphere Geophysical Research Letters. 43: 9361-9367. DOI: 10.1002/2016Gl070153  0.33
2016 Fried A, Barth MC, Bela M, Weibring P, Richter D, Walega J, Li Y, Pickering K, Apel E, Hornbrook R, Hills A, Riemer DD, Blake N, Blake DR, Schroeder JR, ... ... Froyd K, et al. Convective transport of formaldehyde to the upper troposphere and lower stratosphere and associated scavenging in thunderstorms over the central United States during the 2012 DC3 study Journal of Geophysical Research: Atmospheres. 121: 7430-7460. DOI: 10.1002/2015Jd024477  0.333
2015 Liao J, Froyd KD, Murphy DM, Keutsch FN, Yu G, Wennberg PO, St Clair JM, Crounse JD, Wisthaler A, Mikoviny T, Jimenez JL, Campuzano-Jost P, Day DA, Hu W, Ryerson TB, et al. Airborne measurements of organosulfates over the continental U.S. Journal of Geophysical Research. Atmospheres : Jgr. 120: 2990-3005. PMID 26702368 DOI: 10.1002/2014Jd022378  0.406
2015 Zawadowicz MA, Abdelmonem A, Mohr C, Saathoff H, Froyd KD, Murphy DM, Leisner T, Cziczo DJ. Single-Particle Time-of-Flight Mass Spectrometry Utilizing a Femtosecond Desorption and Ionization Laser. Analytical Chemistry. 87: 12221-9. PMID 26575413 DOI: 10.1021/Acs.Analchem.5B03158  0.353
2015 Kim PS, Jacob DJ, Fisher JA, Travis K, Yu K, Zhu L, Yantosca RM, Sulprizio MP, Jimenez JL, Campuzano-Jost P, Froyd KD, Liao J, Hair JW, Fenn MA, Butler CF, et al. Sources, seasonality, and trends of southeast US aerosol: An integrated analysis of surface, aircraft, and satellite observations with the GEOS-Chem chemical transport model Atmospheric Chemistry and Physics. 15: 10411-10433. DOI: 10.5194/Acp-15-10411-2015  0.374
2014 Cziczo DJ, Froyd KD. Sampling the composition of cirrus ice residuals Atmospheric Research. 142: 15-31. DOI: 10.1016/J.Atmosres.2013.06.012  0.382
2014 Murphy DM, Froyd KD, Schwarz JP, Wilson JC. Observations of the chemical composition of stratospheric aerosol particles Quarterly Journal of the Royal Meteorological Society. 140: 1269-1278. DOI: 10.1002/Qj.2213  0.406
2013 Cziczo DJ, Froyd KD, Hoose C, Jensen EJ, Diao M, Zondlo MA, Smith JB, Twohy CH, Murphy DM. Clarifying the dominant sources and mechanisms of cirrus cloud formation. Science (New York, N.Y.). 340: 1320-4. PMID 23661645 DOI: 10.1126/Science.1234145  0.421
2013 Mielke LH, Stutz J, Tsai C, Hurlock SC, Roberts JM, Veres PR, Froyd KD, Hayes PL, Cubison MJ, Jimenez JL, Washenfelder RA, Young CJ, Gilman JB, De Gouw JA, Flynn JH, et al. Heterogeneous formation of nitryl chloride and its role as a nocturnal NOx reservoir species during CalNex-LA 2010 Journal of Geophysical Research Atmospheres. 118: 10638-10652. DOI: 10.1002/Jgrd.50783  0.363
2013 Hayes PL, Ortega AM, Cubison MJ, Froyd KD, Zhao Y, Cliff SS, Hu WW, Toohey DW, Flynn JH, Lefer BL, Grossberg N, Alvarez S, Rappenglück B, Taylor JW, Allan JD, et al. Organic aerosol composition and sources in Pasadena, California, during the 2010 CalNex campaign Journal of Geophysical Research: Atmospheres. 118: 9233-9257. DOI: 10.1002/Jgrd.50530  0.319
2012 Froyd KD, Lovejoy ER. Bond energies and structures of ammonia-sulfuric acid positive cluster ions. The Journal of Physical Chemistry. A. 116: 5886-99. PMID 22103290 DOI: 10.1021/Jp209908F  0.681
2012 Burton SP, Ferrare RA, Hostetler CA, Hair JW, Rogers RR, Obland MD, Butler CF, Cook AL, Harper DB, Froyd KD. Aerosol classification using airborne High Spectral Resolution Lidar measurements-methodology and examples Atmospheric Measurement Techniques. 5: 73-98. DOI: 10.5194/Amt-5-73-2012  0.349
2011 Lance S, Shupe MD, Feingold G, Brock CA, Cozic J, Holloway JS, Moore RH, Nenes A, Schwarz JP, Spackman JR, Froyd KD, Murphy DM, Brioude J, Cooper OR, Stohl A, et al. Cloud condensation nuclei as a modulator of ice processes in Arctic mixed-phase clouds Atmospheric Chemistry and Physics. 11: 8003-8015. DOI: 10.5194/Acp-11-8003-2011  0.382
2011 Brock CA, Cozic J, Bahreini R, Froyd KD, Middlebrook AM, McComiskey A, Brioude J, Cooper OR, Stohl A, Aikin KC, De Gouw JA, Fahey DW, Ferrare RA, Gao RS, Gore W, et al. Characteristics, sources, and transport of aerosols measured in spring 2008 during the aerosol, radiation, and cloud processes affecting Arctic Climate (ARCPAC) Project Atmospheric Chemistry and Physics. 11: 2423-2453. DOI: 10.5194/Acp-11-2423-2011  0.374
2011 Moore RH, Bahreini R, Brock CA, Froyd KD, Cozic J, Holloway JS, Middlebrook AM, Murphy DM, Nenes A. Hygroscopicity and composition of Alaskan Arctic CCN during April 2008 Atmospheric Chemistry and Physics. 11: 11807-11825. DOI: 10.5194/Acp-11-11807-2011  0.395
2011 Carn SA, Froyd KD, Anderson BE, Wennberg P, Crounse J, Spencer K, Dibb JE, Krotkov NA, Browell EV, Hair JW, Diskin G, Sachse G, Vay SA. In situ measurements of tropospheric volcanic plumes in Ecuador and Colombia during TC4 Journal of Geophysical Research Atmospheres. 116. DOI: 10.1029/2010Jd014718  0.409
2010 Froyd KD, Murphy SM, Murphy DM, de Gouw JA, Eddingsaas NC, Wennberg PO. Contribution of isoprene-derived organosulfates to free tropospheric aerosol mass. Proceedings of the National Academy of Sciences of the United States of America. 107: 21360-5. PMID 21098310 DOI: 10.1073/Pnas.1012561107  0.399
2010 Froyd KD, Murphy DM, Lawson P, Baumgardner D, Herman RL. Aerosols that form subvisible cirrus at the tropical tropopause Atmospheric Chemistry and Physics. 10: 209-218. DOI: 10.5194/Acp-10-209-2010  0.41
2010 Thornberry T, Froyd KD, Murphy DM, Thomson DS, Anderson BE, Thornhill KL, Winstead EL. Persistence of organic carbon in heated aerosol residuals measured during Tropical Composition Cloud and Climate Coupling (TC4) Journal of Geophysical Research Atmospheres. 115. DOI: 10.1029/2009Jd012721  0.389
2010 Warneke C, Froyd KD, Brioude J, Bahreini R, Brock CA, Cozic J, De Gouw JA, Fahey DW, Ferrare R, Holloway JS, Middlebrook AM, Miller L, Montzka S, Schwarz JP, Sodemann H, et al. An important contribution to springtime Arctic aerosol from biomass burning in Russia Geophysical Research Letters. 37. DOI: 10.1029/2009Gl041816  0.334
2009 Froyd KD, Murphy DM, Lawson P, Baumgardner D, Herman RL. Composition of cirrus-forming aerosols at the tropical tropopause Atmospheric Chemistry and Physics Discussions. 9: 20347-20369. DOI: 10.5194/Acpd-9-20347-2009  0.41
2009 Froyd KD, Murphy DM, Sanford TJ, Thomson DS, Wilson JC, Pfister L, Lait L. Aerosol composition of the tropical upper troposphere Atmospheric Chemistry and Physics. 9: 4363-4385. DOI: 10.5194/Acp-9-4363-2009  0.432
2009 Cziczo DJ, Froyd KD, Gallavardin SJ, Moehler O, Benz S, Saathoff H, Murphy DM. Deactivation of ice nuclei due to atmospherically relevant surface coatings Environmental Research Letters. 4. DOI: 10.1088/1748-9326/4/4/044013  0.367
2009 Cziczo DJ, Stetzer O, Worringen A, Ebert M, Weinbruch S, Kamphus M, Gallavardin SJ, Curtius J, Borrmann S, Froyd KD, Mertes S, Möhler O, Lohmann U. Inadvertent climate modification due to anthropogenic lead Nature Geoscience. 2: 333-336. DOI: 10.1038/Ngeo499  0.404
2009 Warneke C, Bahreini R, Brioude J, Brock CA, De Gouw JA, Fahey DW, Froyd KD, Holloway JS, Middlebrook A, Miller L, Montzka S, Murphy DM, Peischl J, Ryerson TB, Schwarz JP, et al. Biomass burning in Siberia and Kazakhstan as an important source for haze over the Alaskan Arctic in April 2008 Geophysical Research Letters. 36. DOI: 10.1029/2008Gl036194  0.324
2008 Gallavardin SJ, Froyd KD, Lohmann U, Moehler O, Murphy DM, Cziczo DJ. Single Particle Laser Mass Spectrometry Applied to Differential Ice Nucleation Experiments at the AIDA Chamber Aerosol Science and Technology. 42: 773-791. DOI: 10.1080/02786820802339538  0.403
2007 Murphy DM, Hudson PK, Cziczo DJ, Gallavardin S, Froyd KD, Johnston MV, Middlebrook AM, Reinard MS, Thomson DS, Thornberry T, Wexler AS. Distribution of lead in single atmospheric particles Atmospheric Chemistry and Physics. 7: 3195-3210. DOI: 10.5194/Acp-7-3195-2007  0.353
2006 Murphy DM, Cziczo DJ, Froyd KD, Hudson PK, Matthew BM, Middlebrook AM, Peltier RE, Sullivan A, Thomson DS, Weber RJ. Single-peptide mass spectrometry of tropospheric aerosol particles Journal of Geophysical Research Atmospheres. 111. DOI: 10.1029/2006Jd007340  0.388
2006 Curtius J, Lovejoy ER, Froyd KD. Atmospheric ion-induced aerosol nucleation Space Science Reviews. 125: 159-167. DOI: 10.1007/S11214-006-9054-5  0.695
2004 Lovejoy ER, Curtius J, Froyd KD. Atmospheric ion-induced nucleation of sulfuric acid and water Journal of Geophysical Research D: Atmospheres. 109: D08204 1-11. DOI: 10.1029/2003Jd004460  0.691
2004 Lovejoy ER, Curtius J, Froyd KD. Ion-induced nucleation of sulfuric acid and water in the atmosphere: Kinetic nucleation modeling with measured thermochemistry Journal of Aerosol Science. 35: S1193-S1194. DOI: 10.1016/J.Jaerosci.2004.06.051  0.643
2004 Rosén S, Froyd KD, Curtius J, Lovejoy ER. Kinetics, thermodynamics, and ab initio calculations of HS 2O7 -(H2SO4)x (x = 1-3) cluster ions International Journal of Mass Spectrometry. 232: 9-15. DOI: 10.1016/J.Ijms.2003.10.004  0.646
2003 Froyd KD, Lovejoy ER. Experimental thermodynamics of cluster ions composed of H2SO4 and H2O. 2. Measurements and ab initio structures of negative ions Journal of Physical Chemistry A. 107: 9812-9824. DOI: 10.1021/Jp0278059  0.665
2003 Froyd KD, Lovejoy ER. Experimental thermodynamics of cluster ions composed of H2SO4 and H2O. 1. Positive ions Journal of Physical Chemistry A. 107: 9800-9811. DOI: 10.1021/Jp027803O  0.677
2001 Curtius J, Froyd KD, Lovejoy ER. Cluster Ion Thermal Decomposition (I):  Experimental Kinetics Study and ab Initio Calculations for HSO4-(H2SO4)x(HNO3)y The Journal of Physical Chemistry A. 105: 10867-10873. DOI: 10.1021/Jp0124950  0.647
2001 Curtius J, Froyd KD, Lovejoy ER. Cluster ion thermal decomposition (I): Experimental kinetics study and ab initio calculations for HSOCIfeSCMHNOay Journal of Physical Chemistry A. 105: 10867-10873.  0.628
1999 Herndon SC, Froyd KD, Lovejoy ER, Ravishankara AR. How Rapidly Does the SH Radical React with N2O? Journal of Physical Chemistry A. 103: 6778-6785. DOI: 10.1021/Jp9911853  0.561
1999 Froyd KD, Lovejoy ER. Direct Measurement of the C2H5C(O)O2 + NO Reaction Rate Coefficient Using Chemical Ionization Mass Spectrometry International Journal of Chemical Kinetics. 31: 221-228. DOI: 10.1002/(Sici)1097-4601(1999)31:3<221::Aid-Kin4>3.0.Co;2-2  0.57
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