49,1001
Stephens, Britton
National Center for Atmospheric Research
Medusa Whole Air Flask Sampler
ATom
1,1
2018,4,24,2018,11,27
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
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 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: R1
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
51744,53307,53275,1,170,541,712,802,2766,763,-679.32,18.82,-680.33,412.1,-99999,-99999,-99999
53314,53900,53868,2,170,541,813,819,2748,767,-669.98,13.2,-669.5,412.48,-99999,-99999,-99999
54112,56351,56318,3,170,541,764,810,2718,753,-661.13,-1.35,-99999,410.5,-99999,-99999,-99999
56357,59401,59368,4,170,541,799,542,2711,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999
59407,62521,62482,5,140,621,796,535,2142,750,-656.4,-10.05,-99999,409.22,-99999,-99999,-99999
62527,65503,65461,6,140,621,790,547,2132,752,-659.3,-13.43,-99999,409.7,-99999,-99999,-99999
65509,67981,67926,7,110,670,794,508,1552,743,-656.12,0.85,-99999,409.34,-99999,-99999,-99999
67989,68622,68584,8,170,541,772,564,2731,754,-643.39,14.32,-643.21,408.84,-99999,-99999,-99999
68628,69142,69110,9,170,541,800,558,2722,755,-651.64,12.42,-650.96,409.59,-99999,-99999,-99999
69148,69660,69627,10,170,541,800,569,2717,752,-644.81,12.91,-644.26,409.52,-99999,-99999,-99999
69666,70016,69983,11,170,541,799,578,2727,760,-639.96,9.53,-638.51,408.25,-99999,-99999,-99999
70022,70589,70557,12,170,541,806,572,2746,759,-99999,-99999,-99999,-99999,-99999,-99999,-99999
70597,71764,71710,13,110,670,805,500,1585,748,-655.1,-3.3,-99999,409.53,-99999,-99999,-99999
71770,72541,72500,14,170,540,777,566,2743,763,-643.84,14.84,-643.8,408.91,-99999,-99999,-99999
72547,73007,72975,15,170,541,804,579,2719,775,-674.6,-22.55,-664.64,410.7,-99999,-99999,-99999
73013,73506,73474,16,170,541,803,582,2724,754,-669.41,6.89,-667.26,411.47,-99999,-99999,-99999
73517,74009,73976,17,170,541,809,576,2729,732,-648.48,15.24,-648.54,409.29,-99999,-99999,-99999
74020,74414,74381,18,170,541,808,611,2698,784,-655.62,-13.39,-648.09,409.24,-99999,-99999,-99999
74425,75716,75672,19,110,670,811,507,1572,737,-656.43,5.06,-99999,409.49,-99999,-99999,-99999
75727,76358,76320,20,170,541,776,599,2706,733,-650.96,26.74,-654.07,409.61,-99999,-99999,-99999
76369,76580,76548,21,170,541,807,591,2712,733,-655.63,2.51,-652.32,410.03,-99999,-99999,-99999
76591,77206,77173,22,170,541,808,583,2716,724,-683.65,11.4,-682.7,412.15,-99999,-99999,-99999
77217,77471,77439,23,170,541,809,574,2743,726,-660.36,20.39,-661.79,410.9,-99999,-99999,-99999
77482,78664,78624,24,140,621,811,556,2158,736,-654.38,23.76,-99999,409.89,-99999,-99999,-99999
78675,79430,79389,25,140,621,798,558,2156,736,-655.53,12.7,-99999,409.73,-99999,-99999,-99999
79441,79933,79899,26,170,541,796,610,2716,740,-653.68,17.8,-654.42,410.48,-99999,-99999,-99999
79944,80311,80278,27,170,541,809,601,2709,736,-659.82,27.79,-663.21,410.78,-99999,-99999,-99999
80322,81032,81000,28,170,541,805,597,2734,723,-685.89,16.31,-686.24,412.56,-99999,-99999,-99999
81043,81320,81288,29,170,541,809,608,2737,730,-652.02,21.24,-653.68,409.99,-99999,-99999,-99999
81331,83856,83795,30,80,720,804,500,1032,738,-646,7.31,-99999,408.3,-99999,-99999,-99999
83867,85236,85148,31,80,720,766,512,1011,736,-651.05,6.14,-99999,409.05,-99999,-99999,-99999
85247,86287,86248,32,170,541,768,639,2690,744,-665.99,12.67,-665.37,411.19,-99999,-99999,-99999