49,1001
Stephens, Britton
National Center for Atmospheric Research
Medusa Whole Air Flask Sampler
ATom
1,1
2016,8,15,2017,6,9
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
37778,38005,37897,1,7,482,454,421,94,729,-99999,-99999,-99999,-99999,-99999,-99999,-99999
38011,40025,39915,2,70,720,461,688,704,748,-574.05,150.75,-99999,402.04,-99999,-99999,-99999
40031,40573,40452,3,70,720,746,688,687,748,-595.47,106.7,-99999,401.75,-99999,-99999,-99999
40580,41431,41396,4,200,481,749,753,2573,731,-628.66,29.84,-99999,401.55,-99999,-99999,-99999
41437,41791,41757,5,200,481,783,757,2591,741,-615.73,54.99,-99999,401.44,-99999,-99999,-99999
41797,42818,42728,6,90,700,780,695,978,753,-601.76,47.26,-99999,401.87,-99999,-99999,-99999
42824,43792,43700,7,90,700,748,693,968,746,-605.38,36.28,-99999,401.97,-99999,-99999,-99999
43798,44816,44781,8,200,481,753,747,2559,727,-626.99,31.79,-99999,401.78,-99999,-99999,-99999
44823,45199,45165,9,200,481,778,752,2584,735,-614.16,54.62,-99999,401.47,-99999,-99999,-99999
45206,50031,49933,10,80,710,780,685,817,740,-601.07,58.18,-99999,402.47,-99999,-99999,-99999
50037,51657,51548,11,80,710,745,687,820,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999
51663,52665,52627,12,200,481,752,749,2582,732,-616.84,36.98,-99999,400.99,-99999,-99999,-99999
52671,53031,52997,13,200,481,781,755,2596,735,-601.07,68.16,-99999,402.04,-99999,-99999,-99999
53038,55052,54965,14,80,710,777,690,849,739,-613.59,-7.45,-99999,403.21,-99999,-99999,-99999
55059,56825,56718,15,80,710,746,688,823,736,-611.6,31.46,-99999,403.01,-99999,-99999,-99999
56830,57856,57821,16,200,481,749,746,2528,722,-615.79,38.56,-99999,401.46,-99999,-99999,-99999
57867,58221,58187,17,200,481,788,791,2591,720,-606.08,43.84,-99999,401.87,-99999,-99999,-99999
58232,60208,60137,18,70,720,796,690,709,731,-588.33,61.55,-99999,402.67,-99999,-99999,-99999
60219,60760,60640,19,70,720,752,691,690,728,-602.59,39.88,-99999,402.93,-99999,-99999,-99999
60771,61726,61690,20,200,481,749,799,2508,714,-605.77,33.3,-99999,403,-99999,-99999,-99999
61737,62227,62192,21,200,481,788,797,2534,721,-613.71,36.38,-99999,403.31,-99999,-99999,-99999
62238,62530,62496,22,200,481,791,802,2587,725,-606.45,43.7,-99999,403.07,-99999,-99999,-99999
62541,64444,64349,23,80,710,800,696,866,728,-580.49,75.17,-99999,401.78,-99999,-99999,-99999
64455,64951,64892,24,169,561,749,758,2067,715,-586.97,53.72,-99999,401.44,-99999,-99999,-99999
64962,65460,65417,25,170,561,771,757,2074,713,-601.86,56.64,-99999,403.21,-99999,-99999,-99999
65471,66196,66132,26,80,710,769,694,837,725,-601.4,14.26,-99999,401.67,-99999,-99999,-99999
66207,67130,67024,27,80,710,747,695,843,724,-600.62,19.1,-99999,401.83,-99999,-99999,-99999
67141,67619,67518,28,80,710,746,694,839,723,-595.21,34.4,-99999,402.23,-99999,-99999,-99999
67630,68336,68297,29,200,481,747,782,2529,706,-617.8,21.54,-99999,403.15,-99999,-99999,-99999
68347,68544,68510,30,200,481,786,794,2574,715,-609.6,33.1,-99999,403.4,-99999,-99999,-99999
68555,69966,69843,31,70,720,792,692,709,723,-587.56,80.62,-99999,402.91,-99999,-99999,-99999
69977,70486,70416,32,186,507,746,806,2349,733,-598.71,40.94,-99999,401.43,-99999,-99999,-99999