51,1001
Stephens, Britton
National Center for Atmospheric Research
Medusa Whole Air Flask Sampler
ATom
1,1
2016,8,1,2018,11,27
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
21
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: R3
R3: updated 
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
52692,52794,52762,1,170,561,718,747,2150,773,-593.62,62.71,-606.28,403.52,-99999,-99999,-99999
52794,53066,53025,2,170,561,785,749,2144,642,-99999,-99999,-99999,-99999,-99999,-99999,-99999
53370,54330,54217,3,82,704,666,689,896,728,-592.87,25.29,-595.6,403.67,-99999,-99999,-99999
54336,55514,55415,4,80,710,751,693,897,726,-596.79,29.83,-600.72,403.37,-99999,-99999,-99999
55520,60041,59940,5,80,710,747,690,871,723,-584.81,33.17,-589.63,400.53,-99999,-99999,-99999
60047,62317,62213,6,80,710,742,687,853,723,-586.79,22.46,-588.77,399.65,-99999,-99999,-99999
62323,63266,63160,7,80,710,745,684,846,721,-598.97,-41.15,-584.08,400.13,-99999,-99999,-99999
63273,63993,63888,8,80,710,749,683,845,723,-576.39,38.78,-582.7,399.43,-99999,-99999,-99999
63999,64795,64688,9,80,710,747,684,843,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999
64802,66271,66164,10,78,710,749,680,822,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999
66277,70113,70007,11,81,710,742,685,855,727,-551.87,67.95,-565.92,395.88,-8.182,-0.473,-99999
70119,70884,70779,12,80,710,747,684,847,730,-560.36,42.28,-567.6,396.22,-8.192,-0.051,-99999
70891,73087,72982,13,80,710,750,686,861,733,-577.76,9.67,-576.35,400.23,-8.404,0.877,-99999
73093,74046,73993,14,200,481,746,759,2621,734,-554.64,49.58,-563.81,394.59,-8.136,-1.96,-99999
74053,74401,74367,15,200,481,787,770,2608,747,-556.07,36.59,-561.8,395.32,-8.183,-0.847,-99999
74406,74655,74621,16,200,481,784,758,2612,731,-543.39,53.43,-553.58,394.36,-8.248,-2.927,-99999
74666,75727,75693,17,200,481,793,789,2624,719,-560.04,51.97,-569.85,395.46,-8.167,-0.07,-99999
75738,76004,75970,18,200,481,797,822,2597,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999
76015,76321,76287,19,200,481,801,812,2612,731,-542.31,31.08,-546.58,394.14,-8.202,-0.311,-99999
76332,76569,76535,20,200,480,800,807,2625,724,-540.86,33.25,-545.7,394.02,-99999,-99999,-99999
76580,76907,76873,21,200,481,801,804,2636,726,-559.15,52.01,-568.97,394.99,-8.15,-0.167,-99999
76918,77356,77322,22,199,481,792,792,2567,719,-556.82,59.26,-568.56,395.52,-8.147,-0.031,-99999
77367,77980,77922,23,91,700,789,701,1011,732,-581.25,5.09,-99999,400.6,-99999,-99999,-99999
77991,80036,79936,24,80,710,746,690,855,726,-571.18,33.47,-576.08,396.85,-8.205,0.202,-99999
80047,80522,80422,25,80,710,747,689,847,728,-557.45,70.86,-572.27,395.93,-8.351,-0.403,-99999
80533,81421,81383,26,200,481,753,786,2610,725,-546.52,18.31,-547.4,391.21,-99999,-99999,-99999
81432,81650,81620,27,200,481,799,810,2940,760,-99999,-99999,-99999,-99999,-99999,-99999,-99999
81661,82083,82049,28,200,481,799,790,2640,753,-99999,-99999,-99999,-99999,-99999,-99999,-99999
82094,82571,82500,29,80,709,796,694,900,731,-562.38,35.99,-567.95,396.65,-99999,-99999,-99999
82582,85121,85048,30,200,481,748,790,2599,722,-540.37,42.17,-547.58,393,-99999,-99999,-99999
85132,85786,85752,31,200,481,796,797,2596,723,-558.11,55.57,-568.87,395.53,-99999,-99999,-99999
85797,86629,86533,32,80,710,792,697,894,733,-545.69,81.58,-563.35,395.23,-99999,-99999,-99999