Bill Randel

General Information

ACD - TIIMES
ACD Division Director
UTLS

Contact Information:
PO Box 3000, Boulder, CO 80307-3000
Office: FL0-2030
Telephone: 303-497-1439
Email: randel@ucar.edu
Home Page - Vita

Research Focus FY08:

I am the Division Director of the Atmospheric Chemistry Division (ACD) at NCAR. My personal research interests include dynamic variability and transport in the atmosphere, and understanding the variability of trace constituents using satellite observations.

More recent work has focused on behavior of the global tropopause. I have been a lead author for the World Meteorological Organization (WMO) - United Nations Environment Programme (UNEP) Assessments of stratospheric ozone and temperature trends, Intergovernmental Panel on Climate Change (IPCC) Assessments of Climate Change, and I am actively involved with a number of Stratospheric Processes And their Role in Climate (SPARC) activities.

I am currently on the Steering Group for the Network for the Detection of Atmospheric Composition Change (NDACC), and help lead the Upper Troposphere - Lower Stratosphere (UTLS) initiative at NCAR.

 

Community Service FY08:

• Associate Editor: Journal of Atmospheric Sciences
• Project Lead: World Climate Research Program / Stratospheric Processes and their Role in Climate (WCRP/SPARC)
• Thesis Committee: Rei Ueyama, Universityof Washington
• Thesis Committee: Kevin Grise, Colorado State University
• Editors Award, Geophysical Research Letters, AGU

Scientific Talks FY08:

• Seasonal to decadal variability of tropical stratospheric ozone observed with SHADOZ (San Francisco, CA USA, 12/2007)
• Comparisons between FTIR measurements and global model simulations (Kona, HI USA, 12/2007)
• The Asian monsoon anticyclone and chronic pollution near the tropopause (Boulder, CO USA, 06/2008)
• Using ACE hydrocarbons to constrain UTLS transport (Annecy, FRA, 09/2008)

Publications FY08:

Anthes, R. A., P. A. Bernhardt, Y. Chen, L. Cucurull, K. F. Dymond, D. Ector, S. B. Healy, S.-P. Ho, D. C. Hunt, Y.-H. Kuo, H. Liu, K. W. Manning, C. McCormick, T. K. Meehan, W. J. Randel, C. Rocken, W. S. Schreiner, S. V. Sokolovskiy, S. Syndergaard, D. C. Thompson, K. E. Trenberth, T.-K. Wee, N. L. Yen, Z. Zeng, 2008: The COSMIC/FORMOSAT-3 Mission: Early Results. Bull. Amer. Meteor. Soc., 89, 313-333, doi: 10.1175/BAMS-89-3-313.

Park, M., W. J. Randel, L. K. Emmons, P. F. Bernath, K. A. Walker, C. D. Boone, 2008: Chemical isolation in the Asian monsoon anticyclone observed in Atmospheric Chemistry Experiment (ACE-FTS) data. Atmos. Chem. Phys., 8, 757-764.

Zeng, Z., W. Randel, S. Sokolovskiy, C. Deser, Y.-H. Kuo, M. Hagan, J. Du, W. Ward, 2008: Detection of migrating diurnal tide in the tropical upper troposphere and lower stratosphere using the Challenging Minisatellite Payload radio occultation data. J. Geophys. Res., 113, D03102, doi: 10.1029/2007JD008725.

Seidel, D. J., Q. Fu, W. J. Randel, T. J. Reichler, 2008: Widening of the tropical belt in a changing climate. Nature Geosci, 1, 21-24.

Shine, K. P., J. J. Barnett, W. J. Randel, 2008: Temperature trends derived from Stratospheric Sounding Unit radiances: The effect of increasing CO2 on the weighting function. Geophys. Res. Lett., 35, L02710, doi: 10.1029/2007GL032218.

Randel, W. J., M. Park, F. Wu, N. Livesey, 2007: A large annual cycle in ozone above the tropical tropopause linked to the Brewer Dobson circulation. J. Atmos. Sci., 64, 4479-4488, doi: 10.1175/2007JAS2409.1.

Randel, W. J., F. Wu, P. Forster, 2007: The Extratropical Tropopause Inversion Layer: Global Observations with GPS Data, and a Radiative Forcing Mechanism. J. Atmos. Sci., 64, 4489-4496, doi: 10.1175/2007JAS2412.1.

Seidel, D. J., W. J. Randel, 2007: Recent widening of the tropical belt: Evidence from tropopause observations. J. Geophys. Res., 112, D20113, doi: 10.1029/2007JD008861.

Kinnison, D. E., G. P. Brasseur, S. Walters, R. R. Garcia, D. R. Marsh, F. Sassi, V. L. Harvey, C. E. Randall, L. Emmons, J.-F. Lamarque, P. Hess, J. J. Orlando, X. X. Tie, W. Randel, L. L. Pan, A. Gettelman, C. Granier, T. Diehl, U. Niemeier, A. J. Simmons, 2007: Sensitivity of chemical tracers to meteorological parameters in the MOZART-3 chemical transport model. J. Geophys. Res., 112, D20302, doi: 10.1029/2006JD007879.