49,1001
Stephens, Britton
National Center for Atmospheric Research
Medusa Whole Air Flask Sampler
ATom
1,1
2017,2,21,2017,11,20
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
63628,65186,65159,1,-99999,3275,170,531,-99999,752,-675.87,16.66,-676.31,410.24,766,837.6,-99999
65192,65630,65603,2,-99999,3278,170,531,-99999,752,-650.45,9.52,-649,408,791.8,842.1,-99999
65636,66974,66940,3,-99999,2540,140,610,-99999,742,-621.01,-12.32,-614.42,404.3,790.8,808.5,-99999
66981,67497,67469,4,-99999,3229,170,531,-99999,739,-667.79,10.23,-666.52,410.33,775,834.4,-99999
67503,67843,67816,5,-99999,3187,170,531,-99999,737,-680.61,2.19,-677.21,410.94,784.2,830.1,-99999
67849,68344,68316,6,-99999,3164,170,531,-99999,737,-682.43,5.26,-679.85,410.69,782.1,826.9,-99999
68350,68869,68841,7,-99999,3228,170,531,-99999,739,-663.22,12.97,-662.68,409.6,776.3,828,-99999
68875,69555,69528,8,-99999,3258,170,531,-99999,742,-674.56,6.78,-672.38,409.41,784.1,833,-99999
69561,70387,70352,9,-99999,2536,140,610,-99999,744,-618.84,-13.75,-613.19,403.4,784.4,807.1,-99999
70395,70752,70723,10,-99999,3242,170,531,-99999,742,-659.66,-1.4,-655.31,408.74,776.9,829.2,-99999
70758,71344,71316,11,-99999,3182,170,531,-99999,741,-681.25,14.55,-681.13,410.93,782.2,825.1,-99999
71350,71815,71787,12,-99999,3182,170,531,-99999,737,-686.41,13.98,-686.14,411.06,780.8,823.5,-99999
71821,72105,72077,13,-99999,3205,170,531,-99999,742,-675.15,10.73,-674.02,410.12,781.2,830.1,-99999
72111,72650,72623,14,-99999,3244,170,531,-99999,742,-654.82,0.87,-651.07,408.04,783.7,833.4,-99999
72658,73531,73496,15,-99999,2536,140,610,-99999,749,-649.94,-4.75,-644.7,407.18,789.5,814,-99999
73537,73966,73938,16,-99999,3243,170,531,-99999,740,-666.75,4.64,-664,408.69,773.3,831.6,-99999
73977,74265,74238,17,-99999,3204,170,531,-99999,737,-679.68,5.96,-677.28,410.38,795.6,858.1,-99999
74276,74803,74775,18,-99999,3165,170,531,-99999,773,-675.07,10.57,-673.89,409.86,799.5,888.3,-99999
74814,74994,74967,19,-99999,3187,170,531,-99999,747,-672.74,12.63,-672.11,409.55,795.4,881.6,-99999
75005,75214,75187,20,-99999,3221,170,531,-99999,739,-669.59,7.31,-667.55,409.53,795.8,882.1,-99999
75225,75422,75395,21,-99999,3229,170,531,-99999,740,-652.25,16.19,-652.57,408.45,795.7,878.6,-99999
75433,76416,76389,22,-99999,3253,170,531,-99999,742,-601.56,-14.84,-597.18,401.67,791.4,881.9,-99999
76427,76832,76805,23,-99999,3225,170,531,-99999,737,-664.81,5.34,-662.25,409.19,798.3,872.1,-99999
76843,77174,77147,24,-99999,3192,170,531,-99999,733,-666.88,12.07,-666.1,409.7,799.1,862.2,-99999
77185,77643,77615,25,-99999,3188,170,531,-99999,733,-669.3,11.12,-668.27,409.78,791.6,860.7,-99999
77654,77892,77864,26,-99999,3202,170,531,-99999,739,-672.67,10.65,-671.52,409.89,794.6,865.6,-99999
77903,78189,78162,27,-99999,3238,170,531,-99999,736,-673.16,13.92,-672.87,409.86,796,866.2,-99999
78200,78508,78481,28,-99999,3250,170,531,-99999,745,-630.83,-30.11,-620.77,403.65,798.1,862.5,-99999
78519,79292,79247,29,-99999,1812,110,670,-99999,725,-597.44,-32.57,-592.43,400.88,792.9,796.8,-99999
79303,80641,80592,30,-99999,1796,110,670,-99999,735,-598.59,-22.83,-595.7,401.23,763.8,797.3,-99999
80652,82195,82145,31,-99999,1783,110,670,-99999,735,-608.3,-9.11,-605.48,402.6,763.9,800.7,-99999
82206,84722,84678,32,-99999,3158,170,531,-99999,713,-658.99,22.44,-660.96,408.52,763.4,888.7,-99999