37 1010 Talbot, Robert and Dibb, Jack University of New Hampshire Acidic Trace Gases SONEX 1 1 1997 10 28 1998 03 02 0 Midpoint of sampling interval in elapsed seconds from 00 Universal Time on takeoff date. 6 1.0 1.0 1.0 1.0 1.0 1.0 99999 99999 99999 99999 99999 99999 Nitric Acid (HNO3) Mixing Ratio (pptv) Nitric Acid Limit of Detection (pptv) Formic Acid (HCOOH) Mixing Ratio (pptv) Formic Acid Limit of Detection (pptv) Acetic Acid (CH3COOH) Mixing Ratio (pptv) Acetic Acid Limit of Detection (pptv) 2 1.0 1.0 99999 99999 Start Time (seconds) Stop Time (seconds) 0 12 Species mixing ratios are reported in parts per trillion by volume (pptv). Species mixing ratio below stated limit of detection is indicated by 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: HNO3 (< 30 pptv +/- 35%; 30 - 100 pptv +/- 25%; >100 pptv +/- 20%); HCOOH (<100 pptv +/- 30% ;>100 pptv +/- 20%; CH3COOH (<100 pptv +/- 35%, >100 pptv +/- 20%). Absolute accuracy of pptv values is unknown, but we believe it to be +/- 10 - 20%. 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: robert.talbot@unh.edu or jack.dibb@unh.edu 46664 46475 46853 64 99999 60 99999 88888 19 47040 46854 47225 62 99999 90 99999 88888 21 47420 47226 47613 65 99999 71 99999 34 99999 47806 47614 47998 67 99999 96 99999 88888 19 48120 47999 48242 194 99999 88888 23 88888 32 48344 48243 48445 412 99999 69 99999 88888 38 48537 48446 48627 384 99999 73 99999 88888 41 48733 48628 48837 295 99999 96 99999 88888 53 48898 48838 48957 230 99999 56 99999 88888 42 49048 48958 49138 212 99999 54 99999 33 99999 49231 49139 49322 251 99999 33 99999 88888 42 49414 49323 49505 206 99999 49 99999 29 99999 49597 49506 49687 153 99999 46 99999 88888 42 49777 49687 49867 134 99999 34 99999 22 99999 50001 49868 50134 00 99999 51 99999 88888 27 50269 50135 50402 81 99999 38 99999 88888 27 50538 50403 50673 60 99999 53 99999 88888 27 50809 50674 50945 71 99999 49 99999 88888 27 51936 51845 52027 246 99999 72 99999 88888 42 52116 52028 52203 265 99999 56 99999 88888 42 52293 52204 52382 243 99999 88 99999 80 99999 52473 52383 52563 220 99999 83 99999 64 99999 52652 52564 52740 198 99999 84 99999 88888 42 52829 52741 52917 222 99999 90 99999 88888 42 53008 52918 53097 193 99999 44 99999 88888 42 53213 53098 53327 115 99999 42 99999 88888 33 53462 53328 53595 110 99999 29 99999 88888 27 53754 53596 53911 90 99999 26 99999 28 99999 54070 53912 54227 48 99999 22 99999 88888 22 54392 54228 54556 62 99999 15 99999 31 99999 54732 54557 54906 49 99999 21 99999 21 99999 55064 54907 55221 68 99999 24 99999 55 99999 55381 55222 55539 85 99999 33 99999 88888 23 55677 55540 55813 48 99999 29 99999 88888 27 57208 57093 57322 127 99999 75 99999 30 99999 57440 57323 57557 105 99999 55 99999 22 99999 57692 57558 57826 79 99999 79 99999 39 99999 57970 57827 58112 153 99999 45 99999 23 99999 58246 58113 58379 131 99999 56 99999 88888 27 58514 58380 58648 190 99999 34 99999 88888 27 58765 58649 58881 120 99999 22 99999 88888 32 58995 58882 59107 292 99999 40 99999 88888 33 59223 59108 59337 353 99999 88888 22 88888 31 59451 59338 59564 264 99999 88888 23 88888 33 59683 59565 59800 272 99999 16 99999 88888 31 59936 59801 60070 276 99999 21 99999 88888 27 60192 60071 60313 140 99999 35 99999 88888 33 60471 60314 60627 59 99999 20 99999 88888 27 60787 60628 60946 64 99999 27 99999 88888 27 61105 60947 61262 47 99999 26 99999 88888 27 61422 61263 61582 29 99999 31 99999 88888 27 61740 61583 61897 39 99999 25 99999 88888 27 62057 61898 62215 23 99999 28 99999 88888 26 62402 62216 62588 18 99999 30 99999 88888 23 62745 62589 62901 21 99999 28 99999 88888 25 63037 62902 63172 85 99999 44 99999 88888 27 63316 63173 63458 57 99999 25 99999 88888 23 63575 63459 63690 80 99999 28 99999 88888 27 63823 63691 63956 75 99999 88888 17 88888 24 64093 63957 64229 101 99999 19 99999 88888 23 64349 64230 64468 98 99999 30 99999 88888 27 64586 64469 64702 92 99999 20 99999 88888 27 64834 64703 64965 93 99999 25 99999 88888 24 65087 64966 65207 94 99999 88888 19 88888 27 65328 65208 65447 93 99999 19 99999 88888 27 65566 65448 65684 63 99999 23 99999 88888 27 65805 65685 65924 65 99999 88888 19 88888 27 66045 65925 66165 58 99999 22 99999 88888 27 66325 66166 66483 61 99999 23 99999 88888 20 66630 66484 66776 76 99999 36 99999 88888 27 66886 66777 66995 106 99999 90 99999 64 99999 67103 66996 67210 106 99999 72 99999 94 99999 67318 67211 67424 130 99999 90 99999 77 99999 67543 67425 67660 119 99999 67 99999 75 99999 67768 67661 67874 118 99999 60 99999 74 99999 67981 67875 68087 109 99999 50 99999 67 99999 68196 68088 68304 115 99999 64 99999 83 99999 68418 68305 68531 114 99999 44 99999 32 99999 68646 68532 68760 117 99999 50 99999 47 99999