50,1001 Stephens, Britton National Center for Atmospheric Research Medusa Whole Air Flask Sampler ATom 1,1 2016,8,23,2017,7,7 0 Start_UTC, seconds 16 1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0 -99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999 Stop_UTC, seconds Mean_UTC, seconds position, integer upstream_pressure, torr downstream_pressure, torr bypass_pressure, torr sample_pressure, torr flow, L/min flask_pressure, torr O2_N2, per meg Ar_N2, per meg O2_N2_corr, per meg CO2, ppm d13C_CO2, per mil d18O_CO2, per mil D14C_CO2, per mil 0 20 PI_CONTACT_INFO: stephens@ucar.edu PLATFORM: NASA DC-8 aircraft LOCATION: DC-8 location data available at http://espoarchive.nasa.gov/archive/fileinfo/MMS-FlightPath_DC8_20160712.ict ASSOCIATED_DATA: See http://espoarchive.nasa.gov/archive/browse/atom UNCERTAINTY: N/A INSTRUMENT_INFO: N/A DATA_INFO: N/A DM_CONTACT_INFO: stephens@ucar.edu PROJECT_INFO: N/A ULOD_FLAG: -7777 ULOD_VALUE: N/A LLOD_FLAG: -8888 LLOD_VALUE: N/A STIPULATIONS_ON_USE: Until made public, only the ATom science team is allowed to use this data, per the ATom data protocol. OTHER_COMMENTS: Data are start and stop times for individual flask samples taken with Medusa. The Mean_UTC variable is the representative time of each sample as calculated with an averaging kernel. See Bent 2014 (PhD thesis, UCSD) for details. All pressure variables are measured in situ during sampling except for flask_pressure, which is the final pressure of the flask measured during analysis. In each flask the O2/N2 ratio and the Ar/N2 ratio are measured. When necessary a altitude-dependent fractionation correction is applied (O2_N2_corr). CO2 is extracted after CO2 and O2/N2 content analysis for later isotope analysis: d13-CO2, d18O-CO2, and radiocarbon (D14C). REVISION: R2 R2: updated R1: updated R0: final data. Start_UTC,Stop_UTC,Mean_UTC,position,upstream_pressure,downstream_pressure,bypass_pressure,sample_pressure,flow,flask_pressure,O2_N2,Ar_N2,O2_N2_corr,CO2,d13C_CO2,d18O_CO2,D14C_CO2 52022,57412,57365,23,200,481,627,794,2542,704,-624.09,27.12,-627.3,407.2,-99999,-99999,-99999 57734,57997,57963,24,200,481,739,797,2580,724,-595.02,36.13,-600.62,401.5,-99999,-99999,-99999 58085,60776,60739,25,200,481,732,793,2536,721,-645.17,28.8,-648.83,409.24,-99999,-99999,-99999 60840,61480,61446,26,200,481,744,801,2597,729,-604.69,47.26,-613.25,402.51,-99999,-99999,-99999 61433,63601,61437,27,200,481,744,800,2573,735,-99999,-99999,-99999,-99999,-99999,-99999,-99999 63875,64591,64436,28,60,730,743,692,533,735,-579.49,86.12,-598.35,402.68,-99999,-99999,-99999 64690,66916,66744,29,60,730,734,688,516,732,-572.98,119.52,-600.7,403.43,-99999,-99999,-99999 66992,67786,67621,30,60,730,742,688,514,731,-568.24,118.52,-595.7,402.7,-99999,-99999,-99999 67859,69846,69783,31,200,481,734,789,2470,719,-594.31,33.2,-599.14,401.54,-99999,-99999,-99999 69917,70568,70532,32,200,481,739,806,2468,727,-618.28,18.73,-619.27,404.43,-99999,-99999,-99999