HR: 1340h
AN: A13C-0940    [Abstracts]
TI: A Summary of the ICARTT Measurement Comparison Between the NASA DC-8 and FAAM BAe-146
AU: * Reeves, C
EM: c.reeves@uea.ac.uk
AF: University of East Anglia, School of Environmental Sciences, Norwich, NR4 7TJ United Kingdom
AU: Chen, G
EM: gao.chen-1@nasa.gov
AF: NASA Langley Research Center, Chemistry and Dynamics Branch, Hampton, VA 23681-0001 United States
AU: Arnold, S
EM: sra@env.leeds.ac.uk
AF: University of Leeds, Institute of Atmospheric Science, Environment Building, School of Earch and Environment, Leeds, LS2 9TJ United Kingdom
AU: Ryerson, T
EM: Thomas.B.Ryerson@noaa.gov
AF: NOAA, Aeronomy Laboratory, 325 Broadway, Boulder, CO 80305 United States
AU: Brune, W
EM: brune@meteo.psu.edu
AF: Penn State University, Department of Meteorology, 503 Walker Building, , University Park, PA 16802-5013 United States
AB: One of the objectives of the ICARTT (International Consortium on Atmospheric Research on Transport and Transformation) experiment during the summer of 2004 was to examine the transformation of pollutants as they were transported across the North Atlantic. To enable this, measurements were made on several platforms across the North Atlantic, and at times it was attempted to resample air previously encountered by an upstream platform (Lagrangian experiment). To treat all the data collected on the different platforms as a single database and in particular to interpret the Lagrangian measurements it is essential to know how measurements on each platform compare. To facilitate this, a number of comparisons were made between pairs of platforms to create a chain of comparisons across all platforms. The comparison between the measurements on the NASA DC-8 and the FAAM BAe-146 was one such comparison and provides links to the NOAA WP-3D and DLR Falcon. The comparison flight between the NASA DC-8 and the FAAM BAe-146 was carried out on July 28, 2004, following a coordinated plan devised by both INTEX and ITOP science teams. The aircraft rendezvoused west of the Azores (~ 38° North, ~ 38° West) and both planes flew in wing-tip to wing-tip formation for approximately 70 minutes, performing level runs at 22,000 ft, 12,000 ft and 1,000 ft in cloud free air. This allowed both aircraft to sample the same air masses and compare the common measurements quantitatively over an altitude range of 21,000 ft. The species presented here include O3, CO, C2H6, C2H4, C2H2, benzene, toluene, CH2O, acetone, CH3OH, peroxide, total particle concentration, particulate sulfate, nitrate and meteorological parameters, i.e., pressure, ambient temperature, and dew point temperature.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: Fall Meeting 2005