49,1001
Stephens, Britton
National Center for Atmospheric Research
Medusa Whole Air Flask Sampler
ATom
1,1
2017,2,5,2017,11,20
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
73153,74480,74448,1,-99999,3252,170,531,-99999,732,-604.46,14.25,-604.26,403.44,730,778,-99999
74487,75206,75179,2,-99999,3244,170,531,-99999,729,-604.9,6.29,-602.59,403.19,801.5,778.6,-99999
75212,76449,76422,3,-99999,3194,170,531,-99999,718,-609.95,-7.38,-604.01,403.3,799.4,765.2,-99999
76455,77915,77887,4,-99999,3064,170,531,-99999,706,-592.42,-0.51,-588.31,402.42,792.5,745.6,-99999
77921,78413,78384,5,-99999,3059,170,531,-99999,705,-585.07,5.88,-582.65,401.69,777.7,745.5,-99999
78419,79136,79108,6,-99999,3198,170,531,-99999,718,-600.04,-5.85,-594.51,402.17,777.3,762.1,-99999
79143,80111,80083,7,-99999,3205,170,531,-99999,712,-595.2,-14.11,-587.48,399.06,792.4,754,-99999
80117,81208,81180,8,-99999,3152,170,531,-99999,709,-602.11,-17.85,-593.4,402.17,789.4,744.4,-99999
81214,81864,81836,9,-99999,3102,170,531,-99999,708,-595.14,-8.29,-588.96,402.38,784.9,739.2,-99999
81871,82512,82484,10,-99999,3241,170,531,-99999,713,-99999,-99999,-99999,-99999,785.2,752.8,-99999
82518,83538,83511,11,-99999,3059,162,531,-99999,708,-609.59,-36.76,-595.86,402.16,791.4,737.1,-99999
83545,84966,84938,12,-99999,3155,170,531,-99999,711,-596.8,-2.87,-592.06,402.18,775.8,741.2,-99999
84972,85460,85432,13,-99999,3118,170,531,-99999,713,-570.27,9.77,-568.88,400.39,785.1,740.1,-99999
85466,85897,85869,14,-99999,3216,170,531,-99999,717,-596.65,-8.48,-590.42,401.53,780.5,750.7,-99999
85904,87449,87422,15,-99999,3220,168,531,-99999,733,-599.09,-28.43,-587.57,401.6,794.4,764.4,-99999
87455,88631,88603,16,-99999,3272,170,531,-99999,723,-599.8,-8.66,-593.52,401.84,789.9,754.1,-99999
88642,89279,89251,17,-99999,3169,170,531,-99999,728,-600.34,-0.13,-596.33,401.9,799.4,778.3,-99999
89290,89842,89814,18,-99999,3133,170,531,-99999,756,-570.53,8.34,-568.76,401.99,797.7,811.6,-99999
89853,90776,90748,19,-99999,3224,170,531,-99999,743,-601.73,-16.82,-593.29,401.99,798.5,818.7,-99999
90787,92359,92325,20,-99999,2566,141,610,-99999,733,-599.09,-6.48,-593.39,402.19,799.8,770.5,-99999
92370,93137,93109,21,-99999,3190,170,531,-99999,-99999,-99999,-99999,-99999,-99999,788.2,796.8,-99999
93148,93694,93666,22,-99999,3166,170,531,-99999,727,-576.78,8.83,-575.14,401.17,803.9,795.5,-99999
93705,94316,94289,23,-99999,3255,170,531,-99999,728,-600.15,-9.48,-593.66,402.51,798.5,799.8,-99999
94327,95360,95325,24,-99999,2566,140,610,-99999,750,-99999,-99999,-99999,-99999,802,760.3,-99999
95371,96424,96393,25,-99999,3217,170,531,-99999,727,-562.85,16.57,-563.27,400.41,788.9,788.9,-99999
96435,97019,96991,26,-99999,3186,170,531,-99999,726,-570.88,24.84,-573.68,400.6,805.2,785.2,-99999
97030,97319,97292,27,-99999,3216,170,531,-99999,725,-574.91,17.16,-575.48,400.85,801.6,786.5,-99999
97330,97652,97625,28,-99999,3242,170,531,-99999,731,-588.75,20.29,-590.15,401.68,805.3,793.6,-99999
97663,98907,98872,29,-99999,2535,140,610,-99999,728,-603.08,-29.05,-595.09,401.74,799.1,754.5,-99999
100541,101744,101698,30,-99999,1808,110,670,-99999,729,-614.23,-17.15,-605.74,402.89,692.4,724.7,-99999
101755,103248,103199,31,-99999,1796,110,670,-99999,733,-617.97,-6.71,-612.21,404.42,761.3,726.8,-99999
103259,104162,104112,32,-99999,1778,110,670,-99999,737,-598.92,11.77,-598.06,402.69,767,729.5,-99999