27 1001 Weinheimer, A. J.; Walega, J. G.; Ridley, B. A. National Center for Atmospheric Research DC-8 in situ NO2, NO, NOy, O3 AASE II 1 1 1992 03 18 1993 07 14 60.0 Time (seconds past 0 UT of flight day in line 7) 1 1.0 99999.9 NO2 (pptv) 0 12 For the 4 channels of the instrument (one reported in this file), counts are accumulated and recorded over common 2-second intervals. O3 and NOy are reduced and reported to the archive for these 2-second intervals. The time archived is the start time of the 2-second interval. NO and NO2 are reduced at 2 seconds, then averaged and reported for 1-minute intervals. For these, the archived time (an even minute) is the center time of the 1-minute averaging interval. At typical altitudes, the residence time of air in the inlet system, prior to actual sampling, is 0.1 to 0.3 seconds, except for the NO2 channel which imposes an additional 4-5 seconds residence time. The NO2 data have been shifted an even 4 seconds to accommodate this. UT(sec) NO2(pptv) 16860 99999.9 16920 99999.9 16980 99999.9 17040 99999.9 17100 99999.9 17160 99999.9 17220 99999.9 17280 99999.9 17340 99999.9 17400 99999.9 17460 99999.9 17520 99999.9 17580 99999.9 17640 99999.9 17700 99999.9 17760 99999.9 17820 99999.9 17880 99999.9 17940 99999.9 18000 99999.9 18060 99999.9 18120 99999.9 18180 99999.9 18240 99999.9 18300 99999.9 18360 99999.9 18420 99999.9 18480 99999.9 18540 99999.9 18600 99999.9 18660 99999.9 18720 99999.9 18780 99999.9 18840 99999.9 18900 99999.9 18960 99999.9 19020 99999.9 19080 99999.9 19140 99999.9 19200 99999.9 19260 99999.9 19320 99999.9 19380 99999.9 19440 99999.9 19500 99999.9 19560 99999.9 19620 99999.9 19680 99999.9 19740 99999.9 19800 99999.9 19860 85.2 19920 83.4 19980 99999.9 20040 99999.9 20100 99999.9 20160 99999.9 20220 99999.9 20280 99999.9 20340 99999.9 20400 99999.9 20460 99999.9 20520 99999.9 20580 64.7 20640 71.9 20700 64.3 20760 47.1 20820 65.8 20880 44.2 20940 82.2 21000 70.6 21060 81.2 21120 81.8 21180 69.0 21240 62.1 21300 77.0 21360 68.6 21420 68.1 21480 41.4 21540 36.3 21600 59.9 21660 58.6 21720 58.7 21780 99999.9 21840 99999.9 21900 99999.9 21960 99999.9 22020 78.1 22080 81.2 22140 85.8 22200 99999.9 22260 99999.9 22320 99999.9 22380 85.2 22440 99999.9 22500 99999.9 22560 99999.9 22620 99999.9 22680 99999.9 22740 99999.9 22800 99999.9 22860 99999.9 22920 99999.9 22980 99999.9 23040 99999.9 23100 99999.9 23160 99999.9 23220 99999.9 23280 94.9 23340 85.1 23400 78.7 23460 76.4 23520 99999.9 23580 99999.9 23640 99999.9 23700 99999.9 23760 99999.9 23820 99999.9 23880 99999.9 23940 99999.9 24000 99999.9 24060 99999.9 24120 64.7 24180 55.6 24240 45.5 24300 53.1 24360 61.4 24420 62.3 24480 62.1 24540 71.1 24600 80.6 24660 88.0 24720 97.9 24780 105.6 24840 118.3 24900 108.7 24960 104.2 25020 117.0 25080 124.6 25140 123.4 25200 126.5 25260 109.4 25320 99999.9 25380 99999.9 25440 99999.9 25500 99999.9 25560 99999.9 25620 99999.9 25680 99999.9 25740 99999.9 25800 99999.9 25860 99999.9 25920 84.9 25980 99.8 26040 91.4 26100 84.4 26160 73.1 26220 82.4 26280 71.8 26340 90.1 26400 84.9 26460 85.7 26520 88.8 26580 83.3 26640 80.4 26700 97.6 26760 140.8 26820 106.2 26880 98.0 26940 96.7 27000 89.4 27060 73.1 27120 99999.9 27180 99999.9 27240 99999.9 27300 99999.9 27360 99999.9 27420 99999.9 27480 99999.9 27540 99999.9 27600 99999.9 27660 99999.9 27720 99999.9 27780 99999.9 27840 99999.9 27900 99999.9 27960 99999.9 28020 99999.9 28080 99999.9 28140 99999.9 28200 99999.9 28260 99999.9 28320 99999.9 28380 99999.9 28440 99999.9 28500 72.5 28560 66.8 28620 71.8 28680 62.8 28740 64.8 28800 37.2 28860 26.4 28920 30.2 28980 10.4 29040 33.1 29100 23.0 29160 26.3 29220 24.6 29280 23.9 29340 21.3 29400 8.3 29460 29.1 29520 28.2 29580 29.3 29640 8.6 29700 99999.9 29760 99999.9 29820 99999.9 29880 99999.9 29940 99999.9 30000 99999.9 30060 99999.9 30120 99999.9 30180 99999.9 30240 99999.9 30300 50.7 30360 39.9 30420 35.4 30480 47.7 30540 38.5 30600 31.3 30660 27.8 30720 19.4 30780 29.6 30840 33.0 30900 36.9 30960 37.0 31020 35.1 31080 28.0 31140 32.1 31200 30.3 31260 29.0 31320 27.5 31380 49.9 31440 51.4 31500 34.8 31560 50.0 31620 50.6 31680 56.7 31740 51.4 31800 40.4 31860 41.5 31920 37.0 31980 45.3 32040 99999.9 32100 99999.9 32160 99999.9 32220 38.0 32280 99999.9 32340 99999.9 32400 99999.9 32460 99999.9 32520 99999.9 32580 99999.9 32640 99999.9 32700 99999.9 32760 99999.9 32820 99999.9 32880 99999.9 32940 99999.9 33000 99999.9 33060 99999.9 33120 99999.9 33180 99999.9 33240 99999.9 33300 38.1 33360 48.4 33420 38.0 33480 33.7 33540 18.1 33600 43.8 33660 24.4 33720 28.1 33780 37.1 33840 19.8 33900 27.1 33960 38.6 34020 32.5 34080 38.0 34140 38.8 34200 37.5 34260 29.3 34320 35.4 34380 28.3 34440 39.1 34500 99999.9 34560 99999.9 34620 99999.9 34680 99999.9 34740 99999.9 34800 99999.9 34860 99999.9 34920 99999.9 34980 99999.9 35040 99999.9 35100 45.1 35160 47.8 35220 33.2 35280 43.6 35340 47.4 35400 41.2 35460 51.0 35520 49.5 35580 65.0 35640 87.6 35700 78.0 35760 71.8 35820 72.2 35880 73.1 35940 69.1 36000 79.9 36060 73.8 36120 69.4 36180 89.3 36240 66.2 36300 99999.9 36360 99999.9 36420 99999.9 36480 99999.9 36540 99999.9 36600 99999.9 36660 99999.9 36720 99999.9 36780 99999.9 36840 99999.9 36900 99999.9 36960 99999.9 37020 99999.9 37080 99999.9 37140 99999.9 37200 99999.9 37260 99999.9 37320 99999.9 37380 99999.9 37440 99999.9 37500 99999.9 37560 99999.9 37620 99999.9 37680 99.4 37740 92.8 37800 82.4 37860 90.2 37920 107.1 37980 96.1 38040 72.9 38100 84.4 38160 86.5 38220 83.5 38280 74.2 38340 82.5 38400 76.2 38460 82.1 38520 82.5 38580 73.7 38640 77.0 38700 62.9 38760 77.1 38820 75.8 38880 99999.9 38940 99999.9 39000 99999.9 39060 99999.9 39120 99999.9 39180 99999.9 39240 99999.9 39300 99999.9 39360 99999.9 39420 99999.9 39480 65.9 39540 73.9 39600 72.1 39660 72.0 39720 94.1 39780 66.3 39840 70.3 39900 80.0 39960 92.1 40020 87.5 40080 99.3 40140 95.2 40200 78.8 40260 102.3 40320 86.1 40380 92.8 40440 85.9 40500 98.5 40560 79.4 40620 76.2 40680 99999.9 40740 99999.9 40800 99999.9 40860 99999.9 40920 99999.9 40980 99999.9 41040 99999.9 41100 99999.9 41160 99999.9 41220 99999.9 41280 66.5 41340 77.1 41400 90.2 41460 59.9 41520 64.6 41580 70.6 41640 53.5 41700 63.7 41760 59.4 41820 58.3 41880 48.6 41940 56.8 42000 60.6 42060 62.6 42120 63.9 42180 55.9 42240 56.8 42300 64.1 42360 71.2 42420 60.6 42480 99999.9 42540 99999.9 42600 99999.9 42660 59.1 42720 99999.9 42780 99999.9 42840 99999.9 42900 99999.9 42960 99999.9 43020 99999.9 43080 99999.9 43140 99999.9 43200 99999.9 43260 99999.9 43320 99999.9 43380 99999.9 43440 99999.9 43500 99999.9 43560 99999.9 43620 99999.9 43680 99999.9 43740 70.1 43800 82.6 43860 67.0 43920 93.5 43980 79.7 44040 81.3 44100 70.1 44160 74.1 44220 79.0 44280 64.5 44340 85.0 44400 85.2 44460 79.5 44520 66.3 44580 96.2 44640 49.0 44700 52.7 44760 57.2 44820 105.1 44880 86.3 44940 99999.9 45000 99999.9 45060 99999.9 45120 99999.9 45180 99999.9 45240 99999.9 45300 99999.9 45360 99999.9 45420 99999.9 45480 99999.9 45540 77.9 45600 63.4 45660 40.3 45720 32.7 45780 64.3 45840 61.4 45900 71.4 45960 68.6 46020 85.2 46080 46.1 46140 61.2 46200 59.5 46260 61.5 46320 70.1 46380 72.8 46440 50.5 46500 71.9 46560 61.0 46620 40.2 46680 48.2 46740 99999.9 46800 99999.9 46860 99999.9 46920 99999.9 46980 99999.9 47040 99999.9 47100 99999.9 47160 99999.9 47220 99999.9 47280 99999.9 47340 99999.9 47400 99999.9 47460 99999.9 47520 99999.9 47580 99999.9 47640 99999.9 47700 99999.9 47760 99999.9 47820 99999.9 47880 99999.9 47940 99999.9 48000 99999.9 48060 99999.9 48120 54.7 48180 46.9 48240 75.8 48300 66.9 48360 89.7 48420 86.3 48480 94.6 48540 78.0 48600 93.2 48660 64.0 48720 52.4 48780 56.2 48840 45.4 48900 51.3 48960 56.8 49020 99999.9 49080 99999.9 49140 99999.9 49200 99999.9 49260 99999.9 49320 99999.9 49380 62.9 49440 53.9 49500 58.7 49560 46.8 49620 46.3 49680 64.1 49740 65.3 49800 48.8 49860 44.2 49920 29.8 49980 31.3 50040 29.5 50100 34.3 50160 99999.9 50220 99999.9 50280 99999.9 50340 99999.9 50400 99999.9 50460 99999.9 50520 34.6 50580 36.0 50640 38.3 50700 53.3 50760 86.3 50820 45.6 50880 31.2 50940 53.7 51000 99999.9