James W. Hannigan, Project Scientist III, National Center for Atmospheric Research, Boulder ,CO
M.Sc. in Atmospheric Physics, October, 1991, University of Denver, Denver, CO
Current work uses infrared solar absorption spectroscopy from ground-based and airborne Fourier transform interferometers to determine abundances of terrestial atmospheric gases. Includes building instrumentation, making observations, data acquisition and analysis code development and data analysis.
Participated in field programs both ground-based and aboard NASA and NCAR aircraft (since 1991: AASE2, SLATT, SESAME, ACCENT, TOPSE, SOLVE, MIRAGE, PAVE). Measured spectra have resulted in studies of latitudinal and seasonal distributions of important constituents (eg. HCl, HDO, H2O, HF, HNO3, ClONO2) and measurements have also been included in numerous satellite validation efforts.
Lead in building, deploying and maintaining a ground-based FTIR system in Thule, Greenland and re-establishment of the system at MLO HI as part of the international NDACC program. These provide data on long-term trends of greenhouse gases and their effects on climate change and polar O3 chemistry. Is a significant component in satellite validation programs for HIRDLS, MLS, ACE, MIPAS and SCIAMACHY.
2005 elected co-Chair of the Infrared Working Group of the NDACC, re-elected in 2008, 2011, Member of the NDACC Steering Committee. Member SPARC/IGACO/IOC O3 profile Assessment Committee.
Principle Investigator: “Ground based infrared observations from Mauna Loa, Hawaii and Thule Greenland in support of the Network for the Detection of Atmospheric Composition Change (NDACC)” NASA Project, 2009-2012
Co-Investigator: “Airborne Measurements of Upper Troposphere/Lower Stratosphere Column Amounts Using Infrared Fourier Transform Spectroscopy to Validate EOS Aura Remote Sensors”, NASA PAVE airborne campaign, 2004-2005
Published over 40 journal articles and book chapters,
Intense Arctic Ozone Depletion in the Spring of 2011, J. W. Hannigan, R. L. Batchelor and M.T. Coffey, (2012) ARCTIC, VOL. 65, NO. 3 (SEPTEMBER 2012) P. 339 – 343
Analysis of ozone and nitric acid in spring and summer Arctic pollution using aircraft, ground-based, satellite observations and MOZART-4 model: source attribution and partitioning, C. Wespes, L. Emmons, D. P. Edwards, J. Hannigan, D. Hurtmans, M. Saunois, P.-F. Coheur, C. Clerbaux, M. T. Coffey, R. Batchelor, R. Lindenmaier, K. Strong, A. J. Weinheimer, J. B. Nowak, T. B. Ryerson, J. D. Crounse, and P. O. Wennberg, Atmos. Chem. Phys. Discuss., 12, 237-259, doi:10.5194/acp-12-237-2012, 2012 www.atmos-chem-phys-discuss.net/11/23707/2011/
Semi-Autonomous NDACC FTS Observation System for Remote Sensing of Stratospheric and Tropospheric Gases, J. W. Hannigan, M. T. Coffey and A. Goldman, J. Atm. and Oceanic Tech, 2009, in press.
Importance of secondary sources in the atmospheric budgets of formic and acetic acids, Paulot, F., Wunch, D., Crounse, J. D., Toon, G. C., Millet, D. B., DeCarlo, P. F., Vigouroux, C., Deutscher, N. M., González Abad, G., Notholt, J., Warneke, T., Hannigan, J. W., Warneke, C., de Gouw, J. A., Dunlea, E. J., De Mazière, M., Griffith, D. W. T., Bernath, P., Jimenez, J. L., and Wennberg, P. O., Atmos. Chem. Phys. Discuss., 10, 24435-24497, doi:10.5194/acpd-10-24435-2010, 2010.
Airborne Fourier transform spectrometer (FTS) observations in support of EOS Aura validation, Coffey, M. T., J.W. Hannigan, A. Goldman, D. E. Kinnison, J. C. Gille, J. Barnett, L. Froidevaux, A. Lambert, M. L. Santee, N. J. Livesey, B. M. Fisher, S. S. Kulawik, and R. Beer (2008), Airborne Fourier transform spectrometer (FTS) observations in support of EOS Aura validation, J. Geophys. Res., doi:10.1029/2007JD008833