50,1001 Stephens, Britton National Center for Atmospheric Research Medusa Whole Air Flask Sampler ATom 1,1 2017,1,26,2018,11,27 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 O2N2_MED, per meg ArN2_MED, per meg O2N2star_MED, per meg CO2_MED, ppm co2c13_MED, ppt co2o18_MED, ppt co2c14_MED, ppt 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 an altitude-dependent fractionation correction is applied (O2N2corr_MED). Note that the CO2 mole fraction is reported on the Scripps Institution of Oceanography O2 Program CO2 Scale. CO2 is extracted after CO2 and O2/N2 content analysis for later isotope analysis: d13-CO2 (co2c13_MED), d18O-CO2 (co2o18_MED), and radiocarbon (co2c14_MED). 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,O2N2_MED,ArN2_MED,O2N2star_MED,CO2_MED,co2c13_MED,co2o18_MED,co2c14_MED 61663,62530,62505,1,170,531,775,770,3408,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999 62537,63692,63666,2,170,531,811,764,3320,749,-626.9,-5.24,-621.53,405.82,-8.644,0.704,-99999 63698,69374,69341,3,140,610,792,723,2517,733,-623.14,-3.27,-618.29,405.32,-8.618,1.016,-99999 69380,72676,72641,4,140,610,778,724,2511,732,-624.59,-1.07,-620.33,405.35,-8.649,0.892,-99999 72682,77837,77802,5,140,610,777,725,2506,718,-612.68,-4.6,-607.48,404.05,-8.524,1.068,-99999 77843,78389,78359,6,170,531,771,745,3182,728,-611.36,9.94,-610.02,404.19,-8.551,1.033,-99999 78396,78846,78818,7,170,531,785,734,3140,718,-606.38,9.25,-604.85,404.44,-8.574,0.993,-99999 78852,79471,79443,8,170,531,778,733,3122,725,-624.32,-9.63,-617.79,405.01,-8.602,1.032,-99999 79477,79811,79783,9,170,531,780,740,3145,725,-602.6,27.29,-605.86,404.52,-8.571,0.966,-99999 79817,79996,79969,10,170,531,783,748,3244,733,-604.32,20.42,-605.76,403.89,-8.608,1.148,-99999 80002,80254,80227,11,170,531,792,758,3256,740,-605.74,11.76,-604.88,404.04,-8.501,1.226,-99999 80261,81541,81507,12,140,610,791,730,2562,735,-612.47,3.84,-609.51,404.62,-8.607,0.919,-99999 81547,81934,81904,13,170,531,783,751,3224,731,-606.75,5.56,-604.25,404.07,-8.557,1.118,-99999 81940,82427,82399,14,170,531,788,739,3150,723,-610.76,18.64,-611.73,404.88,-8.61,0.927,-99999 82434,83166,83138,15,170,531,786,748,3132,731,-608.33,20.25,-609.72,404.75,-8.587,0.933,-99999 83172,83565,83537,16,170,531,784,742,3158,720,-612.5,22.03,-614.36,405.19,-8.603,0.874,-99999 83576,84201,84174,17,170,531,803,793,3225,717,-614.16,8.5,-612.44,405.03,-8.603,0.875,-99999 84212,85411,85365,18,110,670,796,740,1897,754,-621.73,6.7,-619.53,405.49,-8.618,0.633,-99999 85422,86362,86330,19,170,531,776,807,3161,740,-617.74,11.23,-616.74,406.06,-8.643,0.783,-99999 86373,86529,86502,20,170,531,800,794,3106,722,-632.42,16.25,-632.75,406.68,-99999,-99999,-99999 86540,87031,87003,21,170,531,791,788,3104,726,-639.48,18.49,-640.41,407.18,-8.763,0.524,-99999 87042,87183,87156,22,170,531,796,789,3109,730,-632.94,32.87,-637.68,407.31,-8.886,0.398,-99999 87194,87389,87361,23,170,531,790,784,3119,726,-617.74,13.62,-617.37,405.61,-8.701,0.574,-99999 87400,89312,89267,24,110,670,799,732,1881,737,-606.33,0.75,-602.55,403.97,-8.596,1.252,-99999 89323,90299,90267,25,170,531,773,783,3144,725,-623.8,9.97,-622.47,406,-8.664,0.194,-99999 90310,90485,90457,26,170,531,795,780,3127,725,-651.93,12.67,-651.31,408.3,-8.866,0.249,-99999 90496,90967,90939,27,170,531,791,775,3125,723,-654.34,15.22,-654.4,408.8,-8.834,0.268,-99999 90978,91174,91146,28,170,531,793,786,3165,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999 91185,92433,92406,29,170,531,800,792,3219,726,-622.29,3.59,-619.26,405.46,-8.644,0.766,-99999 92444,93601,93573,30,170,531,805,781,3140,722,-658.63,6.79,-656.45,408.98,-99999,-99999,-99999 93612,93807,93779,31,170,531,794,794,3158,732,-653.86,10.56,-652.68,408.35,-8.866,0.137,-99999 93818,95482,95436,32,109,670,798,738,1858,716,-617.92,-11.51,-611.75,404.11,-8.566,0.854,-99999