49,1001
Stephens, Britton
National Center for Atmospheric Research
Medusa Whole Air Flask Sampler
ATom
1,1
2018,5,14,2018,11,27
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
19
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: R1
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
37045,38054,38021,1,170,541,762,854,2736,770,-618.64,24.51,-621.16,405.78,-99999,-99999,-99999
38062,38511,38478,2,170,541,814,855,2720,769,-625.91,13.66,-625.55,405.89,-99999,-99999,-99999
38518,39181,39148,3,170,541,811,850,2708,764,-634.09,11.57,-99999,406.89,-99999,-99999,-99999
39187,41429,41396,4,170,541,800,837,2657,752,-623.73,18.07,-624.54,405.9,-99999,-99999,-99999
41435,41876,41843,5,170,541,797,836,2652,753,-631.66,12.62,-631.03,406.45,-99999,-99999,-99999
41882,42991,42958,6,170,541,800,845,2709,760,-635.78,17.06,-636.33,407.24,-99999,-99999,-99999
42998,43651,43618,7,170,541,803,843,2703,761,-645.3,3.97,-99999,407.65,-99999,-99999,-99999
43998,45826,45793,8,170,541,758,833,2654,756,-629.48,16.91,-629.99,406.96,-99999,-99999,-99999
45832,46261,46228,9,170,541,797,836,2681,759,-636.84,13.28,-636.38,407.07,-99999,-99999,-99999
46267,46752,46719,10,170,541,800,835,2715,755,-636.1,4.67,-633.36,406.72,-99999,-99999,-99999
46758,47849,47816,11,170,541,804,838,2700,762,-649.49,-12.48,-99999,408.28,-99999,-99999,-99999
47856,48503,48470,12,170,541,801,835,2701,756,-648.99,3.84,-646.03,408.1,-99999,-99999,-99999
48510,48885,48852,13,170,541,804,836,2694,757,-643.72,13,-643.19,408.05,-99999,-99999,-99999
48891,49674,49641,14,170,541,799,834,2662,761,-661.52,1.27,-657.88,409.75,-99999,-99999,-99999
49680,50041,50008,15,170,541,798,849,2669,772,-659.86,4.93,-657.19,409.59,-99999,-99999,-99999
50047,50561,50528,16,170,541,799,836,2695,756,-632.81,6.73,-630.62,406.92,-99999,-99999,-99999
50572,52261,52228,17,170,541,800,838,2688,734,-654.77,-0.05,-99999,409.42,-99999,-99999,-99999
52272,53316,53283,18,170,541,800,875,2657,778,-685.22,-22.98,-675.15,412.11,-99999,-99999,-99999
53327,53716,53682,19,170,541,803,864,2642,745,-669.98,6.97,-667.85,411.15,-99999,-99999,-99999
53727,54271,54238,20,170,541,799,859,2680,733,-651.05,12.3,-650.33,408.95,-99999,-99999,-99999
54282,54889,54856,21,170,541,805,857,2672,713,-655.65,-3.08,-99999,409.18,-99999,-99999,-99999
54900,55521,55479,22,140,621,801,812,2132,730,-655.14,-19.85,-99999,408.46,-99999,-99999,-99999
55532,56381,56339,23,140,621,790,810,2129,730,-656.42,-7.92,-99999,409.12,-99999,-99999,-99999
56394,57863,57830,24,170,541,781,838,2663,728,-675.15,7.4,-673.13,411.78,-99999,-99999,-99999
57874,58835,58802,25,170,541,797,843,2676,715,-655.32,-7.53,-649.34,408.88,-99999,-99999,-99999
58846,60755,60722,26,170,541,799,846,2691,733,-657.09,0.86,-653.34,409.88,-99999,-99999,-99999
60766,61306,61273,27,170,541,799,837,2662,729,-672.67,12.2,-671.93,412.1,-99999,-99999,-99999
61317,61665,61632,28,170,541,798,832,2705,723,-665.37,10.38,-664.14,411.11,-99999,-99999,-99999
61676,64536,64503,29,170,540,798,838,2674,669,-668.18,-4.31,-99999,411.25,-99999,-99999,-99999
64547,66619,66586,30,170,541,803,834,2638,727,-678.44,5.03,-675.8,412.02,-99999,-99999,-99999
66630,69259,69212,31,80,720,798,757,946,744,-654.65,-1.8,-99999,409.57,-99999,-99999,-99999
69270,69996,69955,32,170,541,768,861,2600,693,-675.83,17.65,-676.53,411.99,-99999,-99999,-99999