Frank Flocke

General Information

ACD - TIIMES
Scientist III
UTLS

Contact Information:
PO Box 3000, Boulder, CO 80307-3000
Office: FL0-1140
Telephone: 303-497-1457
Email: ffl@ucar.edu
Home Page - Vita

Research Focus FY08:

Community Airborne Research Instrumentation Group (CARI)

The CARI group maintains, develops and deploys a number of aircraft trace gas instruments, including instrumentation which can be requested via the NSF/LAOF process, NSF/NCAR GV (HIAPER) instruments (two of those are part of the HAIS suite), and other atmospheric chemistry instruments. These instruments are:

CO	Two vacuum fluorescence instruments (Aerolaser, one certified for GV)
CO2	Two infrared absorption carbon dioxide instruments (Li-Cor, one certified for GV)
H2O	Two TDL infrared absorption open-path water vapor instruments (MayComm Instruments, one certified for GV)
Fast-O3	NO chemiluminescence instrument (home built and certified for GV - HAIS)
NO/NOy	Compact 2-channel chemiluminescence instrument / photolytic conversion /gold catalytic conversion (home built and certified for GV)
NOx/NOy/O3	4-channel chemiluminescence instrument / photolytic conversion /gold catalytic conversion (home built for various aircraft, not certified for GV)
PANs	Thermal dissociation Chemical Ionization Mass Spectrometer (built in collaboration with Georgia Tech)
VOC	TOGA fast GC-MS instrument measuring a variety of VOC (alkanes, alkenes, oxygeneates, aromatics, and others, about 40 compounds total) on a 2-min time scale (home built for GV - HAIS)

The group expects to take responsibility for one or more of the HAIS instruments after they have been delivered to EOL. One of these instruments is the CIMS instrument, developed and built by GA Tech, which will measure HNO3, HNO4, and SO2.

Field Experiments and instrument preparation/improvements

CARI participated in four major aircraft field experiments and an international laboratory study in the last year. The Pacific Sulfur Experiment (PASE) in Sept/Oct 2007 (funded by NSF), the Ice in Clouds Experiment (ICE-L) in November/December 2007 (funded by NSF), the Stratosphere-Troposphere Analyses of Regional Transport 2008 (START-08) mission in April/June of 2008 (funded by NSF), the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) mission in March/April and June/July 2008 (funded by NASA and NSF) and the VAMOS Ocean-Cloud-Atmosphere-Land Study – Regional Experiment (VOCALS-REx) experiment in October/November 2008 using the C-130 (funded by NSF). In October of 2007, CARI participated in the international water vapor intercomparison (AquaVit) in Germany (funded by the German BMBF and the EU with a contribution from NSF).

Two of these missions (ARCTAS and START08) were multi-intensive missions which spanned the entire spring and summer of 2008. In addition, the START08 payload had never been flown before. Due to this heavy field load, CARI had to focus most of it’s efforts on post-mission instrument testing and data QA/QD which is still ongoing. All missions went well and complete data sets were collected. We expect to meet all deadlines for data submission later this fall and early next year. In addition, CARI is preparing a number of instruments for the OASIS field mission, which will start in February of 2009. ...more

Scientific Talks FY08:

• Reactive nitrogen chemistry in Mexico City outflow (San Francisco, CA December 2007)
• Atmos. Chem. Workgroup Summary (Boulder, CO October 2007)
• Graduate Research Advisor & Masters Thesis Committee: Dennis Kreamer (Fachhochschule Darmstadt, Germany)
• Graduate Research Advisor & Masters Thesis Committee: Matthias Bogar (Fachhochschule Darmstadt, Germany)
• Graduate Research Advisor & Masters Thesis Committee: Marcel Foeckler (Fachhochschule Juelich, Germany)

Publications FY08:

Atlas, E., J. De Gouw, F. Flocke, A. Fried, J. Holloway, A. Neuman, J. Nowak, J. Peischl, D. Richter, T. Ryerson, M. Trainer, J. G. Walega, C. Warneke, P. Weibring, W. Zheng, 2008: Rapid and Efficient Production of Ozone over Houston, October 6, 2006: A Case Study. , Austin, TX, US.

Heald, C. L., A. H. Goldstein, J. D. Allan, A. C. Aiken, E. C. Apel, E. L. Atlas, A. K. Baker, T. S. Bates, A. J. Beyersdorf, D. R. Blake, T. Campos, H. Coe, J. D. Crounse, P. F. DeCarlo, J. A. de Gouw, E. J. Dunlea, F. Flocke, A. Fried, P. Goldan, R. J. Griffin, S. C. Herndon, J. S. Holloway, R. Holzinger, J. L. Jimenez, W. Junkermann, W. C. Kuster, A. C. Lewis, S. Meinardi, D. B. Millet, T. Onasch, A. Polidori, P. K. Quinn, D. D. Riemer, J. M. Roberts, D. Salcedo, B. Sive, A. L. Swanson, R. Talbot, C. Warneke, R. J. Weber, P. Weibring, P. O. Wennberg, D. R. Worsnop, A. E. Wittig, R. Zhang, J. Zheng, W. Zheng, 2008: Total observed organic carbon (TOOC) in the atmosphere: a synthesis of North American observations. Atmos. Chem. Phys., 8, 2007-2025.

Eisele, F., D. D. Davis, D. Helmig, S. J. Oltmans, W. Neff, G. Huey, D. Tanner, G. Chen, J. Crawford, R. Arimoto, M. Buhr, L. Mauldin, M. Hutterli, J. Dibb, D. Blake, S. B. Brooks, B. Johnson, J. M. Roberts, Y. Wang, D. Tan, F. Flocke, 2008: Antarctic Tropodpheric Chemistry Investigation (ANTCI) 2003 overview. Atmos. Environ., 42, 2749-2761.

Shon, Z. H., S. Madronich, S.-K. Song, F. M. Flocke, D. J. Knapp, R. S. Anderson, R. E. Shetter, C. A. Cantrell, S. R. Hall, 2008: Characteristics of the NO-NO2-O3 system in different chemical regimes during the MIRAGE-Mex field campaign. Atmos. Chem. Phys. Discuss., 8, 2275-2309.

Wolfe, G. M., J. A. Thornton, V. F. McNeill, D. A. Jaffe, D. Reidmiller, D. Chand, J. Smith, P. Swartzendruber, F. Flocke, W. Zheng, 2008: Influence of trans-Pacific pollution transport on acyl peroxy nitrate abundances and speciation at Mount Bachelor Observatory during INTEX-B. Atmos. Chem. Phys., 7, 5309-5325.