50,1001
Stephens, Britton
National Center for Atmospheric Research
Medusa Whole Air Flask Sampler
ATom
1,1
2016,8,6,2017,7,7
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
20
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: R2
R2: updated 
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
65484,65958,65722,1,208,401,761,1858,6,745,-99999,-99999,-99999,-99999,-99999,-99999,-99999
65965,66871,66809,2,90,700,927,707,1024,734,-99999,-99999,-99999,-99999,-99999,-99999,-99999
66877,67903,67815,3,90,700,759,705,1004,739,-99999,-99999,-99999,-99999,-99999,-99999,-99999
67909,68336,68249,4,90,700,755,703,993,714,-601.88,46.21,-610.16,403.39,-99999,-99999,-99999
68342,69072,69037,5,200,481,758,767,2541,716,-593.93,10.13,-592.64,401.29,-99999,-99999,-99999
69079,69476,69442,6,200,481,780,776,2638,725,-604.6,44.45,-612.41,403.27,-99999,-99999,-99999
69483,71051,70977,7,90,700,788,703,1011,721,-606.2,30.9,-610.42,403.1,-99999,-99999,-99999
71057,71621,71533,8,90,700,758,702,1004,725,-651.13,47.49,-659.75,403.29,-99999,-99999,-99999
71627,72521,72481,9,200,481,756,762,2564,713,-598.19,35.99,-603.76,402.28,-99999,-99999,-99999
72527,72895,72861,10,200,481,778,768,2630,719,-619.06,33.08,-623.86,403.23,-99999,-99999,-99999
72902,74491,72912,11,200,447,768,862,-99999,720,-606.15,37.73,-612.18,403.04,-99999,-99999,-99999
74497,75371,75281,12,90,700,757,700,992,715,-602.04,46.3,-610.34,403.37,-99999,-99999,-99999
75377,76054,76019,13,200,481,753,764,2569,715,-608.28,29.87,-612.22,402.98,-99999,-99999,-99999
76060,76532,76497,14,200,481,777,770,2614,722,-617.72,32,-622.23,403.21,-99999,-99999,-99999
76538,77915,77832,15,88,700,784,700,991,716,-599.85,61.41,-612.16,403.45,-99999,-99999,-99999
77921,78593,78504,16,90,700,755,701,1006,728,-99999,-99999,-99999,-99999,-99999,-99999,-99999
78604,79617,79526,17,90,700,755,699,975,716,-606.32,32.46,-610.95,403.23,-99999,-99999,-99999
79628,80069,80034,18,200,481,753,829,2572,764,-607.03,43.72,-614.65,403.35,-99999,-99999,-99999
80080,81792,81692,19,70,720,813,697,732,722,-597.46,42.12,-604.65,403.48,-99999,-99999,-99999
81803,82446,82327,20,70,720,752,696,720,723,-593.57,54.14,-603.95,403.3,-99999,-99999,-99999
82457,83344,83302,21,200,481,749,798,2539,709,-622.79,39.63,-629.32,403.46,-99999,-99999,-99999
83355,83866,83832,22,200,481,783,808,2621,720,-604.93,41.91,-612.07,403.37,-99999,-99999,-99999
83877,84151,84117,23,200,481,791,800,2608,712,-601.31,54.51,-611.79,403.1,-99999,-99999,-99999
84162,84754,84720,24,200,481,786,796,2591,712,-605.61,20.51,-607.07,403.4,-99999,-99999,-99999
84765,85256,85222,25,200,481,787,804,2651,748,-99999,-99999,-99999,-99999,-99999,-99999,-99999
85267,85741,85707,26,200,481,791,796,2597,714,-627.86,33.48,-632.76,403.48,-99999,-99999,-99999
85752,87094,87060,27,200,481,786,796,2613,-99999,-99999,-99999,-99999,-99999,-99999,-99999,-99999
87105,88719,88598,28,70,720,781,696,731,720,-600.91,40.39,-607.64,403.61,-99999,-99999,-99999
88730,90391,90353,29,200,481,749,787,2547,703,-612.76,30.23,-616.8,403.08,-99999,-99999,-99999
90402,92265,92156,30,50,730,781,684,456,717,-590.65,60.31,-602.67,403.5,-99999,-99999,-99999
92276,93721,93680,31,200,481,742,796,2538,712,-609.45,24.44,-611.95,402.98,-99999,-99999,-99999
93732,94325,94290,32,200,481,784,827,2593,740,-600.78,43.28,-608.28,403.11,-99999,-99999,-99999