49,1001
Stephens, Britton
National Center for Atmospheric Research
Medusa Whole Air Flask Sampler
ATom
1,1
2018,5,9,2018,11,27
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
42614,43174,43142,1,170,541,746,834,2789,781,-605.81,19.05,-606.88,404.24,-99999,-99999,-99999
43181,43903,43871,2,170,541,816,828,2757,784,-599.37,77.81,-616.03,404.94,-99999,-99999,-99999
43911,45421,45389,3,171,541,808,823,2767,777,-616.07,26.18,-99999,404.84,-99999,-99999,-99999
45427,46010,45978,4,170,541,805,814,2751,772,-610.48,21.01,-612.07,404.55,-99999,-99999,-99999
46016,46442,46410,5,170,541,804,821,2743,776,-608.83,40.71,-615.65,404.37,-99999,-99999,-99999
46448,46962,46930,6,170,541,804,797,2752,780,-618.57,44.28,-626.34,404.14,-99999,-99999,-99999
46968,47524,47492,7,170,541,802,792,2757,777,-605.78,51.06,-615.34,404.17,-99999,-99999,-99999
47532,47931,47899,8,170,540,802,792,2742,775,-607.45,33.95,-612.48,404.63,-99999,-99999,-99999
47937,49735,49702,9,163,541,800,766,2599,762,-621.13,-5.26,-99999,404.33,-99999,-99999,-99999
49741,50377,50344,10,170,541,793,808,2730,768,-612.13,26.95,-615.3,404.28,-99999,-99999,-99999
50383,51018,50986,11,170,540,795,816,2734,771,-615,25.76,-617.85,404.15,-99999,-99999,-99999
51024,51777,51745,12,170,540,797,815,2735,768,-610.94,31.15,-615.22,404.05,-99999,-99999,-99999
51785,52474,52442,13,170,540,798,816,2725,767,-615.17,19.41,-616.34,404.31,-99999,-99999,-99999
52480,54690,54654,14,140,621,797,787,2129,770,-622.09,-8.8,-99999,404.52,-99999,-99999,-99999
54696,55503,55467,15,170,541,785,827,2709,786,-613.71,12.83,-613.13,404.15,-99999,-99999,-99999
55509,56323,56290,16,170,541,795,809,2725,766,-611.59,34.95,-616.88,404.07,-99999,-99999,-99999
56334,56820,56788,17,170,541,801,814,2718,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999
56831,57303,57270,18,170,541,804,847,2652,783,-610.41,17.1,-610.97,404.14,-99999,-99999,-99999
57314,58992,58955,19,140,621,802,804,2085,753,-620.11,-7.61,-99999,404.05,-99999,-99999,-99999
60180,61681,61646,20,170,541,747,829,2678,734,-615.06,22.33,-617,403.98,-99999,-99999,-99999
61692,62233,62200,21,170,541,796,813,2674,735,-615.6,14.88,-615.57,404.24,-99999,-99999,-99999
62244,62881,62848,22,169,541,796,795,2652,725,-608.54,36.21,-99999,404.33,-99999,-99999,-99999
62892,64055,64004,23,110,670,791,720,1508,731,-616.97,-8.42,-99999,404.17,-99999,-99999,-99999
64066,65816,65757,24,110,670,767,726,1512,736,-612.23,13.33,-611.79,404.49,-99999,-99999,-99999
65827,66396,66363,25,170,541,766,794,2687,733,-616.13,20.04,-617.47,404.19,-99999,-99999,-99999
66407,66882,66849,26,170,541,800,813,2688,740,-613.17,22.6,-615.19,404.03,-99999,-99999,-99999
66893,67568,67535,27,170,541,801,787,2674,737,-615.27,10.21,-614,404.13,-99999,-99999,-99999
67579,68196,68163,28,169,541,800,782,2662,721,-623.62,-9.97,-99999,404.39,-99999,-99999,-99999
68207,72076,72016,29,110,670,802,718,1489,722,-629.4,-19.25,-99999,404.95,-99999,-99999,-99999
72087,75736,75676,30,110,670,758,727,1500,727,-628.67,-42.05,-99999,404.46,-99999,-99999,-99999
75747,77675,77629,31,170,541,766,824,2679,738,-609.21,16.22,-609.53,404.41,-99999,-99999,-99999
77686,78291,78258,32,170,541,800,833,2682,756,-623.18,14.78,-623.12,404.06,-99999,-99999,-99999