42 1010 Talbot, Robert and Dibb, Jack University of New Hampshire DC-8 Atmospheric Aerosol Chemical Composition SUCCESS 1 1 1996 5 12 1996 8 30 0 Midpoint of sampling interval in elapsed seconds from 00Z on takeoff date. 9 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 99999 99999 99999 99999 99999 99999 99999 99999 99999 Nitrate (NO3); pptv Sulfate (SO4); pptv Chloride (Cl); pptv Oxalate (C2O4); pptv Ammonium (NH4); pptv Potassium (K); pptv Sodium (Na); pptv Calcium (Ca); pptv Magnesium (Mg); pptv 2 1.0 1.0 99999 99999 Start Time; seconds Stop Time; seconds 0 14 Species mixing ratios are reported in parts per trillion by volume. Mixing ratio below limit of detection indicated as 88888. Start and stop times (in Universal Time) for individual samples are reported in seconds of the day (1 day = 86400 sec.). Average uncertainties in mixing ratios are as follows: NO3 20%, SO4 13%, Cl 30%, C2O4 10%, NH4 15%, K 20%, Na 35%, Ca 15%, Mg 10%. Please note that it is not possible to use these data on time scales shorter than reported here. The most useful and appropriate method of comparing the UNH aerosol data to other SUCCESS data is to average the higher resolution measurements over the reported aerosol sampling time intervals. Direct questions about these data to R. Talbot or J. Dibb at: Institute for the Study of Earth, Oceans and Space, Morse Hall, University of New Hampshire, Durham, NH 03824. e-mail: rwt@christa.unh.edu or jed@unh.edu 73815 73440 74190 44.0 46.7 10.6 88888 80.0 14.2 5.2 66.2 7.2 76770 76140 77400 8.0 25.6 88888 88888 53.3 88888 88888 3.7 2.6 78540 77820 79260 20.4 75.5 48.5 88888 14.3 3.7 7.9 88888 1.4 80055 79680 80430 10.0 11.5 1.9 88888 5.7 88888 88888 6.7 1.7 81180 80550 81810 3.7 13.3 88888 88888 11.2 88888 88888 55.6 0.8 82980 82290 83670 88888 23.0 3.0 88888 29.5 88888 88888 88888 0.6 84225 83790 84660 88888 20.8 88888 88888 24.4 88888 88888 5.4 2.9