49,1001
Stephens, Britton
National Center for Atmospheric Research
Medusa Whole Air Flask Sampler
ATom
1,1
2018,5,3,2018,11,27
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
74622,75714,75682,1,170,541,758,829,2787,777,-609.57,24.13,-611.99,404.69,-99999,-99999,-99999
75721,77382,77350,2,170,541,817,841,2776,775,-622.4,14.25,-99999,405.94,-99999,-99999,-99999
77389,78033,78001,3,170,541,813,840,2778,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999
78039,78823,78791,4,170,541,809,835,2740,766,-613.31,19.47,-614.5,404.54,-99999,-99999,-99999
78829,79283,79251,5,170,541,808,841,2753,767,-617.92,17.85,-618.68,405.11,-99999,-99999,-99999
79428,80660,80628,6,170,541,769,836,2739,768,-626.15,7.35,-99999,405.76,-99999,-99999,-99999
80666,81859,81827,7,170,541,783,831,2726,764,-608.52,27.18,-611.75,404.2,-99999,-99999,-99999
81866,82287,82254,8,170,541,802,832,2728,765,-610.34,17.8,-611.08,404.22,-99999,-99999,-99999
82293,82730,82698,9,170,541,805,834,2747,766,-615.01,2.34,-611.65,404.76,-99999,-99999,-99999
82736,84297,84257,10,140,620,799,798,2176,758,-628.06,0.66,-99999,405.94,-99999,-99999,-99999
84304,85246,85213,11,170,540,792,826,2749,762,-614.46,5.3,-611.89,404.64,-99999,-99999,-99999
85252,85903,85871,12,170,541,802,823,2735,762,-613.26,12.05,-612.48,404.15,-99999,-99999,-99999
85910,86567,86535,13,170,541,810,824,2730,763,-616.59,15.68,-616.77,405.04,-99999,-99999,-99999
86573,87707,87673,14,157,541,804,796,2507,744,-626.33,10.62,-99999,405.72,-99999,-99999,-99999
87713,88954,88919,15,170,541,769,835,2724,780,-618.67,11.62,-617.77,405.09,-99999,-99999,-99999
88961,89811,89778,16,170,541,810,818,2722,761,-610.11,23.22,-612.29,404.21,-99999,-99999,-99999
89821,90370,90338,17,170,541,810,827,2708,736,-624.63,15.12,-624.66,405.78,-99999,-99999,-99999
90381,91728,91686,18,140,621,802,826,2116,778,-621.5,-1.64,-99999,405.2,-99999,-99999,-99999
91739,92898,92864,19,170,541,795,863,2704,755,-611.13,22.19,-613.04,404.8,-99999,-99999,-99999
92909,93466,93433,20,170,541,810,851,2702,740,-613.73,24.74,-616.31,404.28,-99999,-99999,-99999
93477,94968,94935,21,170,541,807,851,2715,741,-615.82,16.06,-99999,404.79,-99999,-99999,-99999
94979,95227,95195,22,170,541,808,840,2733,732,-615.19,16.95,-615.71,404.88,-99999,-99999,-99999
95238,95789,95757,23,170,541,808,833,2739,731,-608.5,15.81,-608.71,404.38,-99999,-99999,-99999
95800,96415,96382,24,170,541,813,837,2722,742,-613.2,25.17,-615.9,403.94,-99999,-99999,-99999
96426,96927,96894,25,170,541,810,837,2709,740,-613.5,28.53,-617.09,404.68,-99999,-99999,-99999
96938,97611,97527,26,80,720,807,753,1004,750,-617.79,13.26,-99999,405.02,-99999,-99999,-99999
97622,98583,98494,27,80,720,767,749,1000,749,-623.88,-4.6,-99999,405.04,-99999,-99999,-99999
98594,100926,100868,28,170,540,764,815,2706,724,-620.74,4.24,-617.89,405.26,-99999,-99999,-99999
100937,101844,101811,29,170,541,808,832,2706,741,-603.95,29.23,-607.72,402.99,-99999,-99999,-99999
101855,102027,101995,30,170,541,807,834,2719,736,-608.68,14.08,-608.44,404.24,-99999,-99999,-99999
102038,102799,102766,31,170,541,804,845,2721,743,-615.51,15.37,-615.61,404.97,-99999,-99999,-99999
102810,103070,103037,32,170,541,808,862,2718,751,-618.08,13.19,-617.6,405.13,-99999,-99999,-99999