22 1001 Viggiano, A 781-377-4208, Ballenthin, J -3755, Hunton, D -4057, Miller, T -5031 Air Force Research Laboratory, AFRL/VSBP, 29 Randolph Rd, Hanscom AFB, MA 01731 Sulfuric Acid Concentrations from Chemical Ionization Mass Spectrometer (CIMS) SOLVE Campaign, Hekla Plume Intercept, February 28, 2000. 1 1 2000 02 27 2000 07 31 0 Elapsed Time in UT Seconds from 0 hours on day of flight 1 1 9999 H2SO4 concentration (pptv) 1 Dryden - to - Kiruna Transit Flight 6 Final data. Concentrations are based on post-flight lab calibrations. Contact us for details. Similar data are available for some later Hekla plume crossings. Data are unaveraged point measurements taken at the time listed. Negative concentrations result from background subtraction and small signal counting statistics. UT(sec) H2SO4_ppt 104426 8 104452 23 104478 -2 104506 8 104532 -1 104586 8 104612 17 104666 7 104692 -1 104720 16 104746 8 104772 -1 104800 -1 104826 8 104880 0 104906 6 104960 256 104986 341 105014 179 105040 224 105066 410 105094 102 105120 339 105146 53 105174 93 105200 51 105254 76 105280 169 105334 80 105360 58 105388 14 105414 10 105440 7 105468 25 105494 16