ACD | NCAR | UCAR
Rick Shetter | Barry Lefer | Sam Hall | Pat Carmichael | Edward Riedel
2004 INTEX-A | Greenland 2004/2003 | 2002 TRACE-P | 2002 PEMT-A/PEMT-B | 1999 SOLVE-1 | subglobal2 link | subglobal2 link
Samuel Hall

Job Title
Associate Scientist II
NCAR (National Center for Atmospheric Research)
ACD (Atmospheric Chemistry Division)
ARIM (Atmospheric Radiation Investigation and Measurements)

Contact Information
email: halls@ucar.edu
address: 1850 Table Mesa Dr, Boulder, CO 80305
phone: 303-497-1899
fax: 303-497-1411
office: ML 019D
lab: 063, 070

Education
B.S., Physics, University of Pennsylvania
M.S., Physical Oceanography, University of Rhode Island

Research, Activities and Interests
Atmospheric Radiation and Measurements
Basic Chemical Instrumentation (CO2, CO, fast and slow ozone, TDL water vapor)
Data acquisition, control and analysis software development (LabVIEW, C, C++, FORTRAN, Matlab)

Recent publications
J.A. Thornton, P.J. Wooldridge, R.C. Cohen1, M. Martinez, H. Harder, W.H. Brune, E.J. Williams, F.C. Fehsenfeld, S.R. Hall, R.E. Shetter, B.P. Wert, A. Fried, Observations of Ozone Production Rates as a Function of NOx Abundances and HOx Production Rates in the Nashville Urban Plume, 2002, in press
Lefer, B. L., S. R. Hall, L. Cinquini, and R. E. Shetter, Photolysis frequency measurements at the South Pole during ISCAT-98, Geophysical Research Letters, 28, 3637-3640, 2001
Lefer, B., S. R. Hall, L. Cinquini, J. D. Barrick, J. H. Crawford, and R. E. Shetter, A comparison of spectroradiometer and filter radiometer NO2 photlysis frequency measurements during PEM-Tropics B, 2001, in press
Mauldin, R. L., III; Eisele, F. L.; Tanner, D. J.; Kosciuch, E.; Shetter, R.; Lefer, B.; Hall, S. R.; Nowak, J. B.; Buhr, M.; Chen, G.; Wang, P.; Davis, D. , Measurements of OH, H2SO4, and MSA at the South Pole during ISCAT, Geophys. Res. Lett. Vol. 28, No. 19, p. 3629, 2001
"Hofzumahaus, A., B.L. Lefer, P.S. Monk, S.R. Hall, A. Kylling, B. Mayer, R.E. Shetter, W. Junkermann, A. Bais, J.G. Calvert, C.A. Cantrell, S. Madronich, G. D. Edwards, A. Kraus, M. Muller, B. Bohn, R. Schmitt, P. Johnston, R. McKenzie, G.J. Frost, E. Griffioen, M. Krol, T. Martin, G. Pfister, E.P. Roth, A. Ruggaber, W.H. Swartz, S.A. Lloyd, M. VanWeele, Photolysis Frequency of O[3] to O(^1D): Measurements and modeling during the International Photolysis Frequency Measurement and Modeling Intercomparison (IPMMI)J. Geophys. Res., Vol. 109, No. D8, D08S90, 10.1029/2003JD004333"
"Lefer, B.L., R.E. Shetter, S.R. Hall, J.H. Crawford and J.R. Olson, Impact of Clouds and Aerosols on Photolysis Frequencies and Photochemistry during TRACE-P, 1. Analysis Using Radiative Transfer and Photochemical Box Models, J. Geophys. Res., 108(D21) 8821, doi: 10.1029/2002JD003171, 2003."
"Cantrell, C.A., G.D. Edwards, S. Stephens, R.L. Mauldin, M. Zondlo, E. Kosciuch, F.L. Eisele, R.E. Shetter, B.L. Lefer, S.R. Hall, F. Flocke, A. Weinheimer A. Fried, E. Apel, Y. Kondo, D.R. Blake, N. Blake, I. Simpson, A. Bandy, D. Thornton, B. Heikes, H. Singh, W.H. Brune, H. Harder, M. Martinez-Harder, D. J. Jacob, M.A. Avery, J.D. Barrick, G.W. Sachse, J.R. Olsen, J.H. Crawford and A D. Clarke, Peroxy Radical Behavior during the Transport and Chemical Evolution over the Pacific (TRACE-P) campaign, as Measured Aboard the NASA P-3B Aircraft, J. Geophys. Res., 108(D20) 8797, doi: 10.1029/2003JD003674, 2003."
"Martinez, M., H. Harder, T.A. Kovacs, J. B. Simpas, J. Bassis, R. Lesher, W.H. Brune, G.J. Frost, E.J. Williams, C.A. Stroud, B.T. Jobson3, J.M. Roberts, S.R. Hall, R.E. Shetter, B. Wert, A. Fried, B. Alicke, J. Stutz, V.L. Young, A.B. White, R.J. Zamora, OH and HO2 concentrations, sources and loss rates during the Southern Oxidants Study in Nashville, TN, summer 1999, J. Geophys. Res., 108(D19) 4617, doi: 10.1029/2003JD003551R, 2003."
"Bais, A., S. Madronich, J. Crawford, S. R. Hall, B. Mayer, M. VanWeele, J. Lenoble, J. G. Calvert, C. A. Cantrell, R. E. Shetter, A. Hofzumahaus, P. Koepke, P. S. Monks, G. Frost, R. McKenzie, N. Krotkov, A. Kylling, W. H. Swartz, S. Lloyd, G. Pfister, T.J. Martin, E.-P. Roeth, E. Griffioen, A. Ruggaber, M. Krol, A. Kraus, G.D. Edwards, M. Mueller, B.L. Lefer, P. Johnston, H. Schwander, D. Flittner, B.G. Gardiner, J. Barrick and R. Schmitt, International Photolysis Frequency Measurement and Model Intercomparison (IPMMI): Spectral Actinic Solar Flux Measurements and Modeling, J. Geophys. Res., 108(D16), 8543, doi:10.1029/2002JD002891, 2003."
"Karl, T., T. Jobson, W.C. Kuster, E. Williams, J. Stutz, R. Shetter, S.R. Hall, P. Goldan, F. Fehsenfeld and W. Lindinger, Use of proton-transfer-reaction mass spectrometry to characterize volatile organic compound sources at the La Porte super site during the Texas Air Quality Study 2000, J. Geophys. Res., 108(D16), 4508, doi:10.1029/2002JD003333, 2003."
"Shetter, R.E., W. Junkermann, W. H. Swartz, G. J. Frost, J. H. Crawford, B. L. Lefer, J. D. Barrick, S. R. Hall, A. Hofzumahaus, A. Bais, J. G. Calvert, C. A. Cantrell, S. Madronich, M. Müller, A. Kraus, P. S. Monks, G. D. Edwards, R. McKenzie, P. Johnston, R. Schmitt, E. Griffioen, M. Krol1, A. Kylling, R. R. Dickerson, S. A. Lloyd, T. Martin, B. Gardiner, B. Mayer, G. Pfister, E. P. Röth, P. Koepke, A. Ruggaber, H. Schwander and M. van Weele, Photolysis Frequency of NO2: Measurement and Modeling during the International Photolysis Frequency Measurement and Modeling Intercomparison (IPMMI), J. Geophys. Res., 108(D16), 8544, doi: 10.109/2002JD002932, 2003."
"Geyer, A., B. Alicke, R. Ackermann, E. Williams, S.R. Hall, R.E. Shetter, T. Jobson, M. Martinez-Harder, W.H. Brune, L. Stockburger and J. Stutz, Direct observations of daytime NO3: Implications for urban boundary layer chemistryJ. Geophys. Res., 108(D12), 4368, 10.1029/2002JD002967, 2003."
"Shetter, R.E., L. Cinquini, B.L. Lefer, S.R. Hall and S. Madronich, Comparison of airborne measured and calculated spectral actinic flux and derived photolysis frequencies during the PEM Tropics B mission, J. Geophys. Res., 108(D2), 8234, doi:10.1029/2001JD001320, 2003."
"Cantrell, C.A., L. Mauldin, M. Zondlo, F. Eisele, E. Kosciuch, R. Shetter, B. Lefer, S. Hall, T. Campos, B. Ridley, J. Walega, A. Fried, B. Wert, F. Flocke, A. Weinheimer, J. Hannigan, M. Coffey, E. Atlas, S. Stephens, B. Heikes, J. Snow, D. Blake, N. Blake, A. Katzenstein, J. Lopez, E. V. Browell, J. Dibb, E. Scheuer, G. Seid and R. Talbot, Steady State Free Radical Budgets and Ozone Photochemistry During TOPSE, J. Geophys. Res., 108(D4), 8361, doi:10.1029/2002JD002198, 2003."
"Thornton, J.A., P.J. Wooldridge, R.C. Cohen, M. Martinez, H. Harder, W.H. Brune, E.J. Williams, J.M. Roberts, F.C. Fehsenfeld, S.R. Hall, R.E. Shetter, B.P. Wert and A. Fried, Ozone production rates as a function of NOx abundances and HOx production rates in the Nashville urban plume, J. Geophys. Res., 107(D12), 10.1029/2001JD000932, 2002."
"Lefer, B.L., S.R. Hall, L. Cinquini, and R.E. Shetter, J.D. Barrick and J.H. Crawford, Comparison of airborne NO2 photolysis frequency measurements during PEM-Tropics B, J. Geophys. Res., 106(D3), 32645-32656, 2001."
"Lefer, B.L., S.R. Hall, L. Cinquini and R.E. Shetter, Photolysis frequency measurements at the South Pole during ISCAT-98, Geophysical Research Letters, 28, 19, 3637-3640, 2001."
"Mauldin III, R.L., F. L. Eisele, D.J. Tanner, E. Kosciuch, R. Shetter, B. Lefer, S.R. Hall, J.B. Nowak, M. Buhr, G. Chen, P. Wang and D. Davis, Measurements of OH, H2SO4, and MSA, at the South Pole during ISCAT, Geophysical Research Letters, 28, 19, 3629-3632, 2001."


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