39, 1001 Brune, William; Thames, Alexander; Miller, David; Brosius, Alexandra Penn State University ATHOS - Airborne Tropospheric Hydrogen Oxides Sensor ATom 1, 1 2018, 05, 06, 2018, 11, 28 0 Start_UTC, seconds, seconds since UTC midnight on day of takeoff 3 1, 1, 1 -9999.000, -9999.000, -9999.000 Stop_UTC, seconds, seconds since UTC midnight on day of takeoff Mid_UTC, seconds, seconds since UTC midnight on day of takeoff OHInterference_ATHOS, pptv, OH interference in pptv 0 22 PI_CONTACT_INFO: Address: 503 Walker Building, University Park, PA 16802; email: whb2@psu.edu 814-865-3286 PLATFORM: NASA - DC-8 Aircraft - sampling underneath aircraft forward cargo bay LOCATION: ATom IV: Science Flight #6 -- CHC - PUQ ASSOCIATED_DATA: N/A INSTRUMENT_INFO: OH from Laser Induced Fluorescence; OH interference from chemical removal. DATA_INFO: Units are pptv for OH interference. UNCERTAINTY: HOx absolute accuracy ~+/- 32% (actually a multiplicative factor of 1/1.32 to 1.32), 2 sigma confidence. ULOD_FLAG: -7777 ULOD_VALUE: N/A LLOD_FLAG: -8888 LLOD_VALUE: N/A DM_CONTACT_INFO: William H. Brune, Penn State, whb2@psu.edu; 814-865-3286 PROJECT_INFO: NSF/NASA ATom Mission. 2016 - 2018; Multiple Locations STIPULATIONS_ON_USE: No restrictions. Contact PI or DM with any questions. OTHER_COMMENTS: Final Data. OH interference signals from individual 20 or 30 second periods have been averaged together for 150 seconds. - This averaging compensates for the noise introduced because OH and OH interference measurements are done sequentially, - and the OH interference signal is the residual of the chemical removal of ambient OH. - Small variations in ambient OH measurements yield large (~1*10^6 cm^-3) variations in individual 20 or 30 second measurements. REVISION: R1 R1: Final Data (see OTHER_COMMENTS) R0: Final Data (see OTHER_COMMENTS) Start_UTC, Stop_UTC, Mid_UTC, OHInterference_ATHOS 73315, 73464, 73390, 0.021 73466, 73615, 73541, -0.013 73616, 73765, 73691, 0.001 73766, 73915, 73841, -0.013 73916, 74065, 73991, 0.013 74066, 74215, 74141, -0.002 74216, 74365, 74291, 0.003 74367, 74516, 74442, 0.016 74517, 74666, 74592, -0.010 74667, 74816, 74742, -0.002 74952, 75101, 75027, -0.001 75276, 75425, 75351, -0.018 75426, 75575, 75501, -9999.000 75847, 75996, 75922, 0.020 75997, 76146, 76072, -0.001 76147, 76296, 76222, 0.026 76298, 76447, 76373, 0.017 76448, 76597, 76523, 0.004 76598, 76747, 76673, 0.000 76748, 76897, 76823, 0.008 76898, 77047, 76973, 0.016 77049, 77198, 77124, 0.020 77199, 77348, 77274, 0.003 77349, 77498, 77424, -0.020 77499, 77648, 77574, -0.013 77649, 77798, 77724, 0.009 77800, 77949, 77875, 0.012 77950, 78099, 78025, -9999.000 78100, 78249, 78175, -9999.000 78250, 78399, 78325, -9999.000 78400, 78549, 78475, 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