Publications through November, 2007

Manuscripts in press and submitted:

Bradley A. Flowers, John F. Stanton, William R. Simpson, Wavelength Dependence of Nitrate Radical Quantum Yield from Peroxyacetyl Nitrate Photolysis: Experimental and Theoretical Studies, accepted to the Journal of Physical Chemistry, A, 2007.

Published:

Simpson, W. R., D. Carlson, G. Hoenninger, T. A. Douglas, M. Sturm, D. K. Perovich, and U. Platt (2007), The Dependence of Arctic Tropospheric Halogen Chemistry on Sea Ice Conditions, Atmos. Chem. Phys., 7, 621 – 627.

W. R. Simpson, R. von Glasow, K. Riedel, P. Anderson, P. Ariya, J. Bottenheim, J. Burrows, L. Carpenter, U. Frieß, M. E. Goodsite, D. Heard, M. Hutterli, H.-W. Jacobi, L. Kaleschke, B. Neff, J. Plane, U. Platt, A. Richter, H. Roscoe, R. Sander, P. Shepson, J. Sodeau, A. Steffen, T. Wagner, E. Wolff (2007), Halogens and their role in polar boundary-layer ozone depletion, Atmos. Chem. Phys., 7, 4375-4418, 2007

Grannas, A. M., Jones, A. E., Dibb, J., Ammann, M., Anastasio, C., Ariya, P., Beine, H. J., Bergin, M., Bottenheim, J., Boxe, C. S., Carver, G., Chen, G., Crawford, J. H., Domine, F., Frey, M. M., Guzman, M. I., Heard, D. E., Helmig, D., Hoffmann, M. R., Honrath, R. E., Huey, L. G., Hutterli, M., Jacobi, H., Klan, P., McConnell, J., Sander, R., Savarino, J., Shepson, P. B., Simpson, W. R., Sodeau, J. R., von Glasow, R., Weller, R., Wolff, E., and Zhu, T. (2007), An overview of snow photochemistry: Evidence, mechanisms and impacts, Atmos. Chem. Phys. Discuss., 7, 329-4373, 2007.

F. Domine, M. Albert, T. Huthwelker, H.-W. Jacobi, A. A. Kokhanovsky, M. Lehning, G. Picard, and W. R. Simpson (2007), Snow physics as relevant to snow photochemistry, Atmos. Chem. Phys. Discuss., 7, 5941–6036, 2007

Taillandier, A.-S., F. Domine, W. R. Simpson, M. Sturm, T. A. Douglas, and K. Severin (2007), Evolution of the Snow Area Index (SAI) of the subarctic snowpack in central Alaska over a whole season. Consequences for the air to snow transfer of pollutants., Env. Sci. and Tech., in press.

Domine, F., A.-S. Taillandier, S. Houdier, F. Parrenin, W. R. Simpson, and T. A. Douglas (2007), Interactions between snow metamorphism and climate: physical and chemical aspects, in "Physics and Chemistry of Ice", W.F. Kuhs, ed., Royal Society of Chemistry, Cambridge, UK, pp. 27-46., in Physics and Chemistry of Ice, edited by W. F. Kuhs, Royal Society of Chemistry, Cambridge, UK.

Taillandier, A., F. Domine, W. R. Simpson, M. Sturm, and T. A. Douglas (2007), Rate of decrease of the specific surface area of dry snow: Isothermal and temperature gradient conditions, J. Geophys. Res., 112, F03003, doi:03010.01029/02006JF000514.

Ayers, J. D., and W. R. Simpson (2006), Measurements of N2O5 near Fairbanks, Alaska, J. Geophys. Res., 111, D14309.

Simpson, W. R., L. Alvarez-Aviles, T. A. Douglas, M. Sturm, and F. Domine (2005), Halogens in the coastal snow pack near Barrow, Alaska: Evidence for active bromine air-snow chemistry during springtime, Geophys. Res. Lett., 32, L04811.

Douglas, T. A., M. Sturm, W. R. Simpson, S. Brooks, S. Lindberg, and D. Perovich (2005), Elevated mercury measured in snow and frost flowers near Arctic sea ice leads, Geophys. Res. Lett., 32, L04502.

Domine, F., A. S. Taillandier, W. R. Simpson, and K. Severin (2005), Specific surface area, density and microstructure of frost flowers, Geophys. Res. Lett., 32, L13502.

Phillips, G. J., and W. R. Simpson (2005), Verification of snowpack radiation transfer models using actinometry, J. Geophys. Res., 110. D08306.

Flowers, B. A., M. E. Angerhofer, W. R. Simpson, T. Nakayama, and Y. Matsumi (2005), Nitrate radical quantum yield from peroxyacetyl nitrate photolysis, J. Phys. Chem. A, 109, 2552-2558.

James D. Ayers, Randy L. Apodaca, William R. Simpson, and Douglas S. Baer (2005), Off-Axis Cavity Ring-Down Spectroscopy: Application to Atmospheric Nitrate Radical Detection, Applied Optics, 44, 7239-7242.

W. R. Simpson, Continuous wave cavity ring-down spectroscopy applied to in-situ detection of dinitrogen pentoxide (N2O5), Rev. Sci. Inst., 74, 7, 3442-3452 (2003). DOI: 10.1063/1.1578705.

Simpson, W.R., M.D. King, H.J. Beine, R.E. Honrath, and M.C. Peterson, Atmospheric photolysis rates during the Polar Sunrise Experiment ALERT2000 Field Campaign, Atmos. Env., 36 (15-16) 2471-2480 (2002). The original published article contained a typo that was corrected in the literature.

Simpson, W.R., M.D. King, H.J. Beine, R.E. Honrath, and X. Zhou, Radiation-transfer modeling of snow pack photochemical processes during ALERT2000., Atmos. Env., 36 (15-16), 2663-2670 (2002).

Zhou, X., H.J. Beine, R.E. Honrath, J.D. Fuentes, W.R. Simpson, P.B. Shepson, and J.W. Bottenheim, Snowpack Photochemical Production of HONO: a Major Source of OH in the Arctic Boundary Layer in Spring Time, Geophys. Res. Lett., 28(21), 4087-4090, 2001.

Harald J. Beine, Richard E. Honrath, Florant Domine, William R. Simpson, Martin D. King, Jose D. Fuentes, NOx during background and ozone depletion periods at Alert: Fluxes above the snow surface, J. Geophys. Res. 107 (D21), 4584-4596 (2002).

Amanda M. Grannas, Paul B. Shepson, Christofe Gimbaud, Ann Louise Sumner, Mary Albert, William Simpson, Florant Domine, Hacine Boudries, Jan Bottenheim, Harald J. Beine, Richard E. Honrath, Zianliang Zhou, A study of carbonyl compounds and photochemistry in the Arctic atmospheric boundary layer, Atmos. Env. 36 (15-16), 2733-2742 (2002).

K. Seki, Y. Kasai, Y. Murayama, M. Kohei, T. Itable, F. J. Murcray, W. R. Simpson, and S. A. Lloyd, Trace gas observations with Poker Flat FTIR, J. Communication Res. Lab. 49 (2), 191-200 (2002).

King, M.D., and W.R. Simpson, The extinction of UV radiation in Arctic snow at Alert, Canada (82°N), J. Geophys. Res., 106 (D12), 12499-12508 (2001).

Jaffe, D., T. Anderson, D. Covert, B. Trost, J. Danielson, W. Simpson, D. Blake, J. Harris, and D. Streets, Observations of ozone and related species in the Northeast Pacific during the PHOBEA campaigns: 1. Ground based observations at Cheeka Peak, J. Geophys. Res., 105 (D7), 7449-7461 (2001).

Michelsen, H.A., and W.R. Simpson, Relating state-dependent cross sections to non-Arrhenius behavior for the Cl + CH4 reaction, J. Phys. Chem. A., 105, 1476-1488 (2000).

Lloyd, S., W.H. Swartz, T. Kusterer, D. Anderson, C.T. McElroy, C. Midwinter, R. Hall, K. Nassim, D. Jaffe, W. Simpson, J. Danielson, D. Griffin, B. Johnson, D. Quincy, S. Oltmans, P. Newman, R. McPeters, G. Labow, L. Moy, C. Seftor, and G. Toon, Total ozone observations and trend at Fairbanks during POLARIS, J. Geophys. Res., 104 (D21), 26767-26778 (1999).

Zhao, X., C. Tengroth, R. Chen, W. R. Simpson, T. G. Spiro, Time-resolved Raman spectroscopy with a tunable ultraviolet kilohertz nanosecond laser, J. Raman Spectroscopy, 30, 773-776 (1999).

Jaffe, D., T. Anderson, D. Covert, R. Kotchenruther, B. Trost, J. Danielson, W. Simpson, T. Berntsen, S. Karlsdottir, D. Blake, J. Harris, and G. Carmichael, Transport of Asian air pollution to North America, Geophys. Res. Lett, 26 (6),711-714 (1999).

King, M.D., E.M. Dick, and W.R. Simpson, A new method for the atmospheric detection of the nitrate radical (NO3), Atmos. Env., 34,683-686 (1999).

Schulz, K.J., and W.R. Simpson, Frequency-matched cavity ring-down spectroscopy, Chem. Phys. Lett., 297, 523-529, (1998).

Lloyd, S., W.H. Swartz, T. Kusterer, D. Anderson, C.T. McElroy, C. Midwinter, R. Hall, K. Nassim, D. Jaffe, W. Simpson, J. Danielson, D. Griffin, B. Johnson, D. Quincy, S. Oltmans, P. Newman, R. McPeters, G. Labow, L. Moy, C. Seftor, and G. Toon, Total ozone observations and trend at Fairbanks during POLARIS, J. Geophys. Res., in press, (1999).

Zhao, X., C. Tengroth, R. Chen, W. R. Simpson, T. G. Spiro, Time-resolved Raman spectroscopy with a tunable ultraviolet kilohertz nanosecond laser, J. Raman Spectroscopy, in press, (1999).

Jaffe, D., T. Anderson, D. Covert, R. Kotchenruther, B. Trost, J. Danielson, W. Simpson, T. Berntsen, S. Karlsdottir, D. Blake, J. Harris, and G. Carmichael, Transport of Asian air pollution to North America, Geophys. Res. Lett., 26 (6), 711-714, (1999).

A. J. Orr-Ewing, W. R. Simpson, T. P. Rakitzis, S. A. Kandel, R. N. Zare, Scattering-Angle Resolved Product Rotational Alignment for the Reaction of Cl with Vibrationally Excited Methane, J. Chem. Phys., 5961-5971 (1997).

W. R. Simpson, T. P. Rakitzis, S. A. Kandel, T. Lev-On, R. N. Zare, Picturing the transition-state region and understanding vibrational enhancement in the Cl+CH4 -> HCl+CH3 reaction, J. Phys. Chem. , 100, 7938-7947 (1996).

W. R. Simpson, T. P. Rakitzis, S. A. Kandel, A. J. Orr-Ewing, R. N. Zare, Reaction of Cl with vibrationally excited CH4 and CHD3: State-to-state differential cross sections and steric effects for the HCl product, J. Chem. Phys. 103, 7313-7335 (1995).

W. R. Simpson, A. J. Orr-Ewing, S. A. Kandel, T. P. Rakitzis, R. N. Zare, Core extraction for measuring state-to-state differential cross sections of bimolecular reactions, J. Chem. Phys. 103, 7299-7312 (1995).

A. J. Orr-Ewing, W. R. Simpson, T. P. Rakitzis, R. N. Zare, Preparing reagents: time dependence of HCl(v=1,J) alignment following pulsed infrared excitation, Isr. J. Chem. 34, 95 (1994).

W. R. Simpson, A. J. Orr-Ewing, R. N. Zare, State-to-state differential cross sections for the reaction Cl(2P3/2) + CH4(v3=1,J=1) -> HCl(v’=1,J’) + CH3, Chem. Phys. Lett. 212, 163-171 (1993).

N. E. Shafer, A. J. Orr-Ewing, W. R. Simpson, H. Xu, R. N. Zare, State-to-state differential cross sections from photoinitiated bulb reactions, Chem. Phys. Lett 212, 155-162 (1993).

W. R. Simpson, A. J. Orr-Ewing, R. N. Zare, State-to-state dynamics and doubly differential cross sections for the reaction of chlorine with CH4(v3=1,J), Ed. C.-Y. Ng, Laser techniques for state-selected and state-to-state chemistry, Los Angeles, CA (SPIE: Bellingham, WA, 1993).

M. J. Bronikowski, W. R. Simpson, R. N. Zare, Effect of reagent vibration on the H + HOD reaction: an example of bond-specific chemistry, J. Phys. Chem. 97, 2194-2203 (1993).

M. J. Bronikowski, W. R. Simpson, R. N. Zare, Comparison of reagent stretch vs. bend excitation in the H + D2O reaction: an example of mode-selective chemistry, J. Phys. Chem. 97, 2204-2208 (1993).

M. J. Bronikowski, W. R. Simpson, B. Girard, R. N. Zare, Bond specific chemistry: OD:OH product ratios for the reactions H + HOD(100) and H + HOD(001), J. Chem. Phys. 95, 8647-8648 (1991).

T. A. Stephenson, et al., Laser induced fluorescence of jet cooled IBr:B3P0+ - X 1S+ excitation spectra, J. Phys. Chem. 93, 2310 (1989).

W. R. Simpson, T. A. Stephenson, Spectroscopy and A state dynamics of the NeIBr vdW complex, J. Chem. Phys. 90, 3171 (1989).