Group Publications

Laj, P., A. Bigi, C. Rose, E. Andrews, C. L. Myhre, M. Collaud Coen, A. Wiedensohler, M. Schultz, J. A. Ogren, J.   Gliss, A. Mortier, M. Pandolfi, T. Petäjä, M. Kulmala, S-W Kim, W. Aas, J-P Putaud, M. Fiebig, O. Mayol  Bracero, N. Prats, K. sellegri, J-M Pichon, J-M Metzger, P. Tulet, P. Villani, S. Conil, A. Alastuey, A. G. Hallar, …. A Global Analysis of Climate-Relevant Aerosol properties retrieved from the network of GAW near-surface observatories, Atmospheric Measurement Techniques, 2020.

Kassianov, E. M. Pekour, L. Berg, G. Chirokova, C. Flynn, A. G. Hallar, A. Setyan, D. Zhang, J. Uin, J. Fast:   Aerosol Total Volume Estimation from Wavelength- and Size-resolved Scattering Coefficient Data: A New Method, Earth and Space Science, Paper #2019EA000863-T, accepted, in-press 2020.

Clegg, S.L., Mazzoleni, L.R., Samburova, V., Taylor, N.F., Collins, D.R., Schum, S.K., and Hallar, A.G., 2019. Modelling the hygroscopic growth factors of aerosol material containing a large water-soluble organic fraction, collected at the Storm Peak Laboratory. Atmospheric Environment, 2019,

Skiles, S.M., Mallia, D.V., Hallar, A.G., Lin, J.C., Lambert, A., Petersen, R. and Clark, S., 2018. Implications of a shrinking Great Salt Lake for dust on snow deposition in the Wasatch Mountains, UT, as informed by a source to sink study from the 13-14 April 2017 dust event. Environmental Research Letters, 13(12), p. 124031

Petersen, R.C., A. G. Hallar, I. B. McCubbin, J. A. Ogren, E. Andrews, D. Lowenthal, R. Gorder, R. Purcell, Da. Sleeth & I. Novosselov (2019) Numerical, wind-tunnel, and atmospheric evaluation of a turbulent ground based inlet sampling system, Aerosol Science and Technology, DOI: 10.1080/02786826.2019.1602718

Lowenthal, D. H., Hallar, A. G., David, R. O., McCubbin, I. B., Borys, R. D., and Mace, G. G.: Mixed-phase orographic cloud microphysics during StormVEx and IFRACS, Atmos. Chem. Phys., 19, 5387-5401,, 2019.

Collaud Coen, M., Andrews, E., Aliaga, D., Andrade, M., Angelov, H., Bukowiecki, N., Ealo, M., Fialho, P., Flentje, H., Hallar, A. G., Hooda, R., Kalapov, I., Krejci, R., Lin, N.-H., Marinoni, A., Ming, J., Nguyen, N. A., Pandolfi, M., Pont, V., Ries, L., Rodríguez, S., Schauer, G., Sellegri, K., Sharma, S., Sun, J., Tunved, P., Velasquez, P., and Ruffieux, D.: Identification of topographic features influencing aerosol observations at high altitude stations, Atmos. Chem. Phys., 18, 12289-12313,, 2018.

Andrews, E., Sheridan, P.J., Ogren, J.A., Hageman, D., Jefferson, A., Wendell, J., Alastuey, A., Alados-Arboledas, L., Bergin, M., Ealo, M. and Hallar, A.G., 2018. Overview of the NOAA/ESRL federated aerosol network. Bulletin of the American Meteorological Society, (2018).

Skiles, S. M., Mallia, D. V., Hallar, A. G., Lin, J. C., Lambert, A., Petersen, R., & Clark, S. (2018). Implications of a shrinking Great Salt Lake for dust on snow deposition in the Wasatch Mountains, UT, as informed by a source to sink case study from the 13–14 April 2017 dust event. Environmental Research Letters, 13(12), 124031.

Hallar, A.G., N. Molotch, J. Hand, B. Livneh, I. McCubbin, R. Petersen, J. Michalsky, and D. Lowenthal, 2017: Impacts of Increasing Aridity and Wildfires on Aerosol Loading in the Intermountain Western U.S., Environ. Res. Lett. 12 014006.

Taylor, N., D. Collins, D. Lowenthal, B. Zielinska, V. Samburova, N. Kumar, G. Hallar, L. Mazzoleni, and I. McCubbin, 2017: Hygroscopic growth of water soluble organic carbon isolated from atmospheric aerosol collected at U.S. national parks and Storm Peak Laboratory, Atmospheric Chemistry and Physics, 17.4, 2555-2571.

Kassianov, E., M. Pekour, C. Flynn, L. K. Berg, J. Beranek, A. Zelenyuk, C. Zhao, L.R. Leung, P.L. Ma, J. Barnard, A.G. Hallar, I.B. McCubbin, E.W. Eloranta, A. McComiskey, P.J. Rasch, 2017: Large Contribution of Coarse Mode to Aerosol Microphysical and Optical Properties: Evidence from Ground-based Observations of a Trans-Pacific Asian Dust Outbreak at a High-Elevation North American Site, Journal of Atmospheric Sciences, 74.5 (2017): 1431-1443.

Sullivan, R. C., Crippa, P., Hallar A. G., Clarisse, L., Leaitch, W. R., Aneja, V. P., and Pryor S.C., 2016: Using satellite-based measurements to explore spatiotemporal scales and variability of drivers of new particle formation, J. of Geophysical Research, 121 (20).

Hallar, A.G. E. Andrews, N. Bukowiecki, D. A. Jaffe, N-H Lin, 2016: Overview of the Special Issue “Selected Papers from the 2nd Atmospheric Chemistry and Physics at Mountain Sites Symposium” Aerosol and Air Quality Research, Volume 16, No. 3, March 2016, Pages 471-477, doi: 10.4209/aaqr.2016.02.0077

Lowenthal, D., Hallar, A.G., McCubbin, I., David, R., Borys, R., Blossey, P., Muhlbauer, A., Kuang, Z. and Moore,M., 2016. Isotopic Fractionation in Wintertime Orographic Clouds. Journal of Atmospheric and Oceanic Technology, 33(12), pp.2663-2678.

Yu, F., G. Luo, A. G. Hallar: 2016, Vertical profiles and seasonal variations of key parameters controlling particle formation and growth at Storm Peak Laboratory Aerosol and Air Quality Research, Volume 16, No. 3, March 2016, Pages 900-908, doi:10.4209/aaqr.2015.05.0341

Hallar, A.G. R. Petersen, I. B. McCubbin, D. Lowenthal, S. Lee, E. Andrews, F. Yu: 2016, Climatology of New Particle Formation and Corresponding Precursors at Storm Peak Laboratory, Aerosol and Air Quality Research, Volume 16, No. 3, March 2016, Pages 816-826, doi: 10.4209/aaqr.2015.05.0341.

Hallar, A.G., R. Petersen, E. Andrews, J. Michalsky, I. B. McCubbin, J. A. Ogren: 2015, Contributions of Dust and Biomass-burning to Aerosols at a Colorado Mountain-top Site, Atmos. Chem. Phys., 15, 1–15.

Yu, F., G. Luo, S. C. Pryor, P. R. Pillai, S. H. Lee, J. Ortega, J. J. Schwab, A. G. Hallar, W. R. Leaitch, V. P. Aneja, J. N. Smith, J. T. Walker, O. Hogrefe, and K. L. Demerjian: 2015, Spring and summer contrast in new particle formation over nine forest areas in North America, Atmospheric Chemistry and Physics, MS No.: acp-2015-453.

Goliff, W., M. Luria, D. R. Blake, B. Zielinska, A.G. Hallar, R. J. Valente, C. V. Lawson, W.R. Stockwell, 2015: Nighttime air quality under desert conditions, Atmospheric Environment, Volume 114, Pages 102-111, ISSN 1352-2310.

Kristensen, T.B., L. Du, Q. T. Nguyen, J. K. Nojgaard, C. Bender Koch, O. Faurskov Nielsen, A. G. Hallar, D. H. Lowenthal, B. Nekat, D. van Pinxteren, H. Herrmann, M. Glasius, H. G. Kjaergaard, M. Bilde, 2015: Physico Chemical Properties of  HULIS from Different Environments, Journal of Atmospheric Chemistry, Volume 72, Issue 1, pp 65-80.

Yu, F. and A. G. Hallar, 2014: Difference in particle formation at a mountain-top location during the spring and summer: Implications for the role of sulfuric acid and organics in nucleation, J. of Geophysical Research, 119, 21, 12,246–12,255.

Yu, H., A. G. Hallar, Y. You, A. Sedlacek, S. Springston, V. P. Kanawade, Y. N. Lee, J. Wang, C. Kuang, R. L. McGraw, I.B. McCubbin, J. Mikkila and S. H. Lee, 2013: Sub-3 nm Particles Observed at the Coastal and Continental Sites in the United States, J. of Geophysical Research, 119, doi:10.1002/2013JD020841.

Hallar, A.G., D. H. Lowenthal, S. L. Clegg, V. Samburova, N. Taylor, L. R Mazzoleni, B. K. Zielinska, T. B  Kristensen, G. Chirokova, I. B. McCubbin, C. Dodson, D. Collins, 2013: Chemical and Hygroscopic Properties of Aerosol Organics at Storm Peak Laboratory, J. of Geophysical Research, 118, 4767 – 4779,  doi:10.1002/jgrd.50373

Zhao, Y., A. G. Hallar, and L. R. Mazzoleni, 2013: Atmospheric organic matter in clouds: exact masses and molecular formula identification using ultrahigh resolution FT-ICR mass spectrometry; Atmos. Chem. Phys., 13, 12343-12362, doi:10.5194/acp-13-12343-2013, 2013.

Friedman, B., A. Zelenyuk,, J. Beránek, G. Kulkarni, M. Pekour, A.G. Hallar, I.B. McCubbin, J. A. Thornton, and D. J. Cziczo, 2013: Aerosol measurements at a high elevation site: composition, size, and cloud condensation nuclei activity, Atmos. Chem. Phys., 13, 11839-1185

Asmi, A., M. Collaud Coen,, J.A. Ogren, E. Andrews, P. Sheridan, A. Jefferson, E. Weingartner, U. Baltensperger, N. Bukowiecki, H. Lihavainen, N. Kivekäs, E. Asmi, P. P. Aalto, M. Kulmala,, A. Wiedensohler, W. Birmili,  A. Hamed, C. O’Dowd, S.G. Jennings, R. Weller, H. Flentje, A.M. Fjaeraa, M. Fiebig, C.L. Myhre, A. G. Hallar, E. Swietlicki, A. Kristensson, and P. Laj, 2013: Aerosol decadal trends – Part 2: In-situ aerosol particle number concentrations at GAW and ACTRIS stations, Atmos. Chem. Phys., 13, 895-916, doi:10.5194/acp-13-895-2013.

Amin, H. S, R. S. Russo, B. Sive, E. R. Hoebeke, C. Dodson, I. B. McCubbin, A. G. Hallar, K. E. Huff Hartz, 2013: Monoterpene emissions from bark beetle infested Engelmann spruce trees, Atmospheric Environment, Volume 72, 130–133.

Berg, A. R., C.L. Heald, K. E. Huff Hartz, A.G. Hallar, A. J. H. Meddens, J.A. Hicke, J.-F. Lamarque, and S. Tilmes, 2013: The impact of bark beetle infestations on monoterpene emissions and secondary organic aerosol formation in western North America, Atmos. Chem. Phys., 13, 3149-3161, doi:10.5194/acp-13-3149-2013.

Samburova, V., A. G. Hallar, L. R. Mazzoleni, P. Saranjampour,  D. Lowenthal, S. Kohl, and B. Zielinska, 2013: Composition of the water-soluble organic fraction in atmospheric remote aerosols, Environmental Chemistry,

Marchand, R., G. G. Mace, A. G. Hallar, I. B. McCubbin, S. Y. Matrosov and M. Shupe, 2013: Enhanced Radar Backscattering due to Oriented Ice Particles at 95 GHz during StormVEx, J. of Atmospheric and Oceanic Technology, doi:10.1175/JTECH-D-13-00005.1.

Hallar, A.G., L. Avallone, H. Thiry, and L. Edwards, 2015: ASCENT, A Discipline Specific Model to Support the Retention and Advancement of Women in Science, American Geophysical Union Book Series, Best Practices towards Gender Parity in the Academic Science Departments, 70, 135.

Avallone, L, A. G. Hallar, H. Thiry, L. M. Edwards, 2013: Supporting the Retention and Advancement of Women in  the Atmospheric Sciences: What women are saying” Bulletin of the American Meteorological Society, 941313-1316 .doi:

Hallar, A.G., A. Fridlind, J. A. Huffman, 2012: Biological Aerosol Effects on Clouds and Precipitation, EOS, Meeting Summary, 93, 51, December 18.

Kristensen, T., H. Wex, B. Nekat, J. K. Nøjgaard, D. van Pinxteren, D. H. Lowenthal, L. R. Mazzoleni, K. Dieckmann, C.B. Koch, T. F. Mentel, H. Herrmann, A. G. Hallar, F. Stratmann, and Merete Bilde, 2012: Hygroscopic growth and CCN activity of HULIS from different environments, J. of Geophysical Research, 117, D22, 27.

Mazzoleni, L.R., P. Saranjampour, M. M. Dalbec, V. Samburova, A. G. Hallar, B. Zielinska, D. Lowenthal, and Steve  Kohl, 2012: Identification of Water-Soluble Organic Carbon in Nonurban Aerosols using Ultrahigh Resolution FT-ICR  Mass Spectrometry: Organic Anions, Environmental Chemistry, DOI:10.1071/EN11167 .

Amin, H., P.T. Atkins, R. Russo, A. W. Brown, B. Sive, A. G. Hallar, K.E. Huff Hartz, 2012: Effect of Bark Beetle  Infestation on Secondary Organic Aerosol Precursor Emissions, Environmental Science & Technology, 46,  11, 5696–5703, DOI: 10.1021/es204205m.

Matrosov, S.Y., G. G. Mace, R. Marchand, M. D. Shupe, A. G. Hallar, I. B. McCubbin, 2012: Influence of Ice  Hydrometeor Habits on Scanning Polarimertic Cloud Radar Measurements, J. of Atmospheric and Oceanic Technology, 29, 989-1008.

Baustian, K. J., D. J. Cziczo, M. E. Wise, K. A. Pratt, G. Kulkarni, A. G. Hallar, and M. A. Tolbert, 2012: Importance of aerosol composition, mixing state, and morphology for heterogeneous ice nucleation: A combined field and laboratory approach, J. of Geophysical Research, 117, D06217, doi:10.1029/2011JD016784.

Bowers, R.M., I. B. McCubbin, A.G. Hallar, N. Fierer, 2012: Seasonal variability in airborne bacterial communities at  a high-elevation site in the Colorado Rocky Mountains, Atmospheric Environment, 50, 41–49.

Hallar, A.G., G. Chirokova, I.B. McCubbin, T.H. Painter, C. Wiedinmyer, C. Dodson, 2011: Atmospheric Bioaerosols Transported Via Dust Storms in Western United States, Geophysical Res. Letters, 38, L17801, doi:10.1029/2011GL048166.

Hallar, A.G., I. B. McCubbin, J. M. Wright, 2011: CHANGE: A Place-Based Curriculum for Understanding Climate Change at Storm Peak Laboratory, Colorado, Bulletin of the American Meteorological Society, doi: 10.1175/2011BAMS3026.1.

Hallar, A.G., D. H. Lowenthal, G. Chirokova. C. Wiedinmyer, R.D. Borys, 2011: Persistent Daily New Particle  Formation at a Mountain-Top Location, Atmospheric Environment, doi:10.1016/j.atmosenv.2011.04.044.

Hoyle, C.R., M. Boy, N.M. Donahue, J.L. Fry, M. Glasius, A. Guenther, A.G. Hallar, K. Huff Hartz, M.D. Petters, T. Petäjä, T. Rosenoern,  and A.P. Sullivan, 2010: Anthropogenic influence on biogenic secondary organic aerosol. Atmos. Chem. Phys., 10, 19515-19566.

Strawa, A.W., T.W. Kirchstetter, A.G. Hallar, G.A. Ban-Weiss, J.P. McLaughlin, R.A. Harley, and M.M. Lunden, 2010: Optical and physical properties of primary on-road vehicle particle emissions and their implications for  climate change. J. of Aerosol Science, 41, 36-50.

Hallar, A.G., I.B. McCubbin, B. Hallar, R. Levine, W. Stockwell, J. Lopez, J. Wright, 2010: Science in the Mountains: A Unique Research Experience to Enhance Diversity in the Geosciences. J. GeoScience Education, 58, 2, 213-220.

Samy, S., L.R. Mazzoleni, S. Mishra, B. Zielinska, and A.G. Hallar, 2010: Water-soluble organic compounds at a  mountain-top Site in Colorado, USA. Atmos. Environ., 44, 1663-1671.

de Wekker, S.F.J., A. Ameen, G. Song, B.B. Stephens, A.G. Hallar, and I.B. McCubbin, 2009: A preliminary  investigation of boundary layer effects on daytime atmospheric CO2 concentrations at a mountaintop location in the Rocky Mountains. Acta Geophysical, doi:10.2478/s11600-009-0033-6.

Wiedinmyer, C., R.M. Bowers, N. Fierer, E. Horanyi, M. Hannigan, A.G. Hallar, I. McCubbin, K. Baustian, 2009: The contribution of biological particles to observed particulate organic carbon at a remote high altitude site. Atmos.  Environ., 43, 4278–4282.

Faïn, X., D. Obrist, A. G. Hallar, I. McCubbin, and T. Rahn, 2009: High levels of reactive gaseous mercury observed at a high elevation research laboratory in the Rocky Mountains, Atmos. Chem. Phys., 9, 8049-8060.

Bowers, R.M., C.L. Lauber, C. Wiedinmyer, M. Hamady, A.G. Hallar, R. Fall, R. Knight, and N. Fierer, 2009: Characterization of Airborne Microbial Communities at a High-Elevation Site and their Potential to Act as Atmospheric Ice Nuclei, Applied and Environmental Microbiology, 75 (15), 1–2, doi:10.1128/AEM.00447-09.

Obrist D., A.G. Hallar, I. McCubbin, B.B. Stephens, and T. Rahn, 2008: Measurements of atmospheric mercury at Storm Peak Laboratory in the Rocky Mountains: Evidence for long-range transport from Asia, boundary layer contributions, and plant mercury uptake. Atmos. Environ., doi:10.1016/j.atmosenv.2008.06.051.

Davis, S., A. G. Hallar, L. M. Avallone, T. Campos, B. Engblom, 2006: Measurement of total water with a tunable diode laser hygrometer: Inlet analysis calibration procedure, and ice water content determination. J. Atmos. and Oceanic Technol., 24(3), 463–475.

Hallar, A.G., A.W. Strawa, B. Schmid, E. Andrews, J. Ogren, P. Sheridan, R. Ferrare, D. Covert, R. Elleman, H. Jonsson, K. Bokarius, A. Luu, 2006: ARM Aerosol Intensive Operating Period: Comparison of aerosol  scattering during coordinated flights. J. of Geophysical Research, doi: 2005JD006250RR.

Thornton, B.F., D.W. Toohey, L.M. Avallone, A. G. Hallar, H. Harder, M. Martinez, J. B. Simpas, W. H. Brune, M. Koike, Y. Kondo, N. Takegawa, B. E. Anderson, M. A. Avery, 2005: Variability of active chlorine in the lowermost Arctic stratosphere. J. of Geophysical Research, 110, D22304, doi:10.1029/2004JD005580.

Strawa, A.W., R. Elleman, A.G. Hallar, D. Covert, K. Ricci, R. Provencal, T. Owano, H. Jonsson, B. Schmid, A. Luu,  K. Bokarius,  E. Andrews, 2005: In-Situ Measurement of Aerosol Optical Properties Made During the DOE Aerosol IOP: 1. Comparison of Extinction and Scattering Coefficients. J. of Geophysical Research doi: 2005JD006056.

Schmid, B., R. Ferrare, C. Flynn, R. Elleman, D. Covert, A. Strawa, E. Welton, D. Turner, H. Jonsson, J. Redemann, J. Eilers, K. Ricci, A. G. Hallar, M. Clayton, J. Michalsky, A. Smirnov, B. Holben, J. Barnard, 2005: How well can we measure the vertical profile of tropospheric aerosol extinction? J. of Geophysical Research doi: 2005JD005837.

Lopez, J., A. Fridlind, H-J Jost, M. Loewenstein, A. Ackerman, T. Campos, E. Weinstock, D. Sayres, J.B. Smith, J. Pittman, A. G. Hallar, L. Avallone, S. Davis, R. Herman, 2005: CO signatures in subtropical convective clouds and anvils during CRYSTAL-FACE: Constraining entrainment rates with observations. J. of  Geophysical Research., doi: 2005JD006104.

Hallar, A.G., L.M. Avallone, R.L. Herman, B.E. Anderson, and A.J. Heymsfield, 2004: Measurements of ice water content in tropopause region arctic cirrus during the SAGE III Ozone Loss and Validation Experiment (SOLVE). J. of Geophysical Research, 109 (D17203) doi 10.1029/2003JD004348.

Kondo, Y., O.B. Toon, H. Irie, B. Gamblin, M. Koike, N. Takegawa, M.A. Tolbert, P.K. Hudson, A.A. Viggiano, L.M. Avallone, A.G. Hallar, B.E. Anderson, G.W. Sachse, D.E. Hunton, J.O. Balentine, and T.M. Miller, 2003: Uptake of nitric acid on cirrus cloud particles in the upper troposphere and lowermost stratosphere. Geophys. Res. Lett., 30(4), doi:10.1029/2002GL016539.