The Halocarbons and other Atmospheric Trace Species (HATS) group of
designed and built instruments since 1991 for implementation on aircraft
and/or balloon platforms. Each instrument is a multi-channel gas
chromatograph (GC) that measures halogenated trace gases (e.g., chlorofluorocarbons and halons)
and other important atmospheric tracers. All of the HATS airborne instruments
make measurements using gas chromatography with electron capture and/or mass selective detectors
The data obtained from these instruments permit studies of chemistry
and transport in the upper atmosphere. Ongoing efforts at supplementing and packaging
these measurements for public distribution are described on a separate
HATS Airborne Data page.
Airborne Instruments and years of operation
ACATS-II - two channel GC for ER-2 platform (1989-1992)
- four channel GC for ER-2 platform (1993-2000)
- three channel GC for high-altitude balloons and WB-57 platforms (1995-2004)
- six channel GC with ECDs and a mass selective detector (MSD) for WB-57,
DC-8, and Gulfstream-V aircraft (2000-Current)
- two channel GC with ozone and water vapor instruments for Altair UAS, Gulfstream-V,
Global Hawk, DC-8, and ER-2 aircraft (2004-Current)
These links will take you to the UCAR website for more information.
Elkins, J.W., D.W. Fahey, J.M. Gilligan, G.S. Dutton,
T.J. Baring, C.M.Volk, R.E. Dunn, R.C. Myers, S.A. Montzka, P.R. Wamsley,
A.H. Hayden, J.H. Butler, T.M. Thompson, T.H. Swanson, E.J. Dlugokencky,
P.C. Novelli, D.F. Hurst, J.M. Lobert, S.J. Ciciora, R.J. McLaughlin,
T. L. Thompson, R.H. Winkler, P.J. Fraser, L.P. Steele, and M.P. Lucarelli.
Airborne gas chromatograph for in situ measurements of long-lived species
in the upper troposphere and lower stratosphere. Geophys. Res.
Lett.23(4), 347-350, 1996.
Hurst, D.F., G.S. Dutton, P.A. Romashkin, J.W. Elkins,
R.L. Herman, E.J. Moyer, D.C. Scott, R.D. May, C.R. Webster, J. Grecu,
M. Loewenstein, and J.R. Podolske, Comparison of in situ N2O and CH4
measurements in the upper troposphere and lower stratosphere during
STRAT and POLARIS, J. Geophys. Res., 105 (D15), 2000.
Hurst, D.F., P.A. Romashkin, J.W. Elkins, E.A. Oberländer,
N.F. Elansky, I.B. Belikov, I.G. Granberg, G.S. Golitsyn, A.M. Grisenko,
C.A.M. Brenninkmeijer, and P.J. Crutzen, Emissions of ozone-depleting
substances in Russia during 2001, J. Geophys.
Res., 109, D14303, doi:10.1029/2004JD004633,
Hurst, D.F., J.C. Lin, P.A. Romashkin, B.C. Daube,
C. Gerbig, D.M. Matross, S.C. Wofsy, B.D. Hall, and J.W. Elkins, Continuing
global significance of emissions of Montreal Protocol-restricted halocarbons
in the USA and Canada, J. Geophys. Res., 111, D15302, doi:10.1029/2005JD006785,
Moore, F.L., J.W. Elkins, E.A. Ray, G.S. Dutton, R.E.
Dunn, D.W. Fahey, R.J. McLaughlin, T.L. Thompson, P.A. Romashkin, D.F.
Hurst, and P.R. Wamsley, Balloon-borne in situ gas chromatograph for
measurements in the troposphere and stratosphere, J. Geophys. Res.,
108(D5), doi: 10.1029/2001JD000891, 2003.
Ray, E. A., F. L. Moore, J. W. Elkins, D. F. Hurst,
P. A. Romashkin, G. S. Dutton, and D. W. Fahey (2002), Descent and
mixing in the 1999-2000 northern polar vortex inferred from in situ
tracer measurements, J. Geophys. Res., 107(D20), 8285, doi:10.1029/2001JD000961.
Schauffler, S.M., E.L. Atlas, S.G. Donnelly, A. Andrews,
S.A. Montzka, J.W. Elkins, D.F. Hurst, P.A. Romashkin, G.S. Dutton,
V. Stroud, Chlorine budget and partitioning during SOLVE, J. Geophys.
Res. 108(D5), doi:10.1029/2001JD002040, 2002.