42 1010 Talbot, Robert and Dibb, Jack University of New Hampshire DC-8 Atmospheric Aerosol Chemical Composition SUCCESS 1 1 1996 4 15 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 63485 62831 64140 88888 2.0 88888 88888 7.5 88888 88888 88888 88888 65085 64230 65940 88888 1.2 88888 88888 8.6 88888 88888 88888 2.8 66555 66060 67050 88888 2.6 88888 88888 37.3 88888 88888 8.0 8.7 67815 67170 68460 88888 23.1 22.7 88888 13.8 88888 88888 88888 5.4 68880 68610 69150 6.9 13.2 88888 88888 15.8 88888 88888 88888 13.8 69915 69540 70290 88888 88888 88888 88888 2.0 88888 88888 88888 88888