49,1001
Stephens, Britton
National Center for Atmospheric Research
Medusa Whole Air Flask Sampler
ATom
1,1
2016,8,22,2017,6,9
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
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 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: R1
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
46473,46721,46688,1,200,481,746,777,2722,769,-559.87,56.51,-99999,396.56,-99999,-99999,-99999
46727,47896,47863,2,200,481,764,771,2635,756,-566.62,96.31,-99999,399.69,-99999,-99999,-99999
47902,48180,48146,3,200,481,769,767,2628,754,-558.09,90.77,-99999,397.17,-99999,-99999,-99999
48188,48986,48952,4,200,481,792,765,2588,744,-533.85,62.73,-99999,392.95,-99999,-99999,-99999
48992,49250,49216,5,200,481,786,769,2619,752,-551.79,63.16,-99999,395.37,-99999,-99999,-99999
49256,51306,51271,6,170,560,790,743,2092,747,-586.79,102.56,-99999,401.96,-99999,-99999,-99999
51312,52764,52680,7,70,720,777,690,701,748,-582.13,58.84,-99999,402.67,-99999,-99999,-99999
52770,53291,53236,8,170,561,747,734,2077,734,-579.41,55.4,-99999,399.48,-99999,-99999,-99999
53298,54165,54129,9,200,481,769,759,2561,739,-557.78,49.64,-99999,396.89,-99999,-99999,-99999
54171,54559,54525,10,200,481,780,759,2598,742,-551.18,99.9,-99999,397.06,-99999,-99999,-99999
54565,56222,56112,11,70,720,785,690,697,745,-558.5,99.07,-99999,401.34,-99999,-99999,-99999
56228,57511,57452,12,198,485,741,753,2537,732,-562.5,43.71,-99999,396.14,-99999,-99999,-99999
57517,58214,58179,13,200,481,779,756,2538,732,-539.04,42.76,-99999,391.95,-99999,-99999,-99999
58221,58813,58779,14,200,481,778,762,2605,736,-562.95,56.16,-99999,396.84,-99999,-99999,-99999
58820,59930,59805,15,64,726,785,690,608,739,-591.05,-15.91,-99999,401.25,-99999,-99999,-99999
59935,61528,61447,16,187,506,748,747,2371,727,-531.06,31.4,-99999,390.73,-99999,-99999,-99999
61539,61820,61786,17,200,481,789,789,2570,721,-557.05,48.52,-99999,396.33,-99999,-99999,-99999
61831,63421,63312,18,70,720,791,690,691,736,-580.57,57.33,-99999,401.55,-99999,-99999,-99999
63432,64046,63921,19,70,720,746,690,672,732,-579.23,54.24,-99999,400.76,-99999,-99999,-99999
64057,65055,65019,20,200,481,748,799,2541,721,-515,35.1,-99999,387.21,-99999,-99999,-99999
65066,65774,65739,21,200,481,795,800,2578,725,-544.7,49.57,-99999,393.89,-99999,-99999,-99999
65785,66600,66566,22,200,481,801,807,2630,731,-578.69,73.71,-99999,400.12,-99999,-99999,-99999