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Whole Air Sampler ATom meeting Department of Chemistry UCI Donald R
Whole Air Sampler ATom meeting Department of Chemistry UCI Donald R. Blake Nicola J. Blake (no relation) Isobel Simpson Simone Meinardi Barbara Barletta
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DC-8 projects have we flown this decade
TRACE-P 2001 INTEX-A 2004 INTEX-B 2006 TC ARCTAS 2008 SARP 2009, 2010, 2011, 2013, 2014, 2015 DC SEAC4RS 2013
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Window mount inlet/outlet
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Snakes loaded and the “other” Dr. Blake
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Rowland-Blake Lab Analytical Capabilities
Trace gas analysis Gas Chromatography (GC) Flame Ionization Detection (FID) Electron Capture Detection (ECD) Mass Spectrometric Detection (MSD) Sensitive, speciated VOC detection Identification and quantification of >100 VOCs LOD Accuracy Precision NMHCs 3 ppt % % Halos 10 ppq % % Alkyl-NO ppq % % DMS 1 ppt % % OCS 10 ppt % % UC-Irvine laboratory
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Gases quantified by WAS (not including oxygenates)
Alkanes 1. Methane 2. Ethane 3. Propane 4. i-Butane 5. n-Butane 6. i-Pentane 7. n-Pentane 8. n-Hexane 9. n-Heptane 10. n-Octane 11. n-Nonane 12. n-Decane 13. 2,2-Dimethylbutane 14. 2,3-Dimethylbutane 15. 2-Methylpentane 16. 3-Methylpentane 17. 2-Methylhexane 18. 3-Methylhexane 19. 2,3-Dimethylpentane 20. 2,2,4-Trimethylpentane 21. 2,3,4-Trimethylpentane 22. 2-Methylheptane 23. 3-Methylheptane Alkynes 24. Ethyne 25. Propyne Alkenes 26. Ethene 27. Propene 28. 1-Butene 29. i-Butene 30. cis-2-Butene 31. trans-2-Butene 32. 1,3-Butadiene 32. 1-Pentene 34. cis-2-Pentene 35. trans-2-Pentene 36. 2-Methyl-1-Butene 37. 2-Methyl-2-Butene 38. 3-Methyl-1-Butene 39. 2-Methyl-1-Pentene 40. 4-Methyl-1-Pentene 41. Isoprene 42. α-Pinene 43. β-Pinene Alkyl Nitrates 44. MeONO2 45. EtONO2 46. i-PrONO2 47. n-PrONO2 48. 2-BuONO2 49. 2-PeONO2 50. 3-PeONO2 51. 3-Methyl-2-BuONO2 Aromatics 52. Benzene 53. Toluene 54. Ethylbenzene 55. m-Xylene 56. o-Xylene 57. p-Xylene 58. Styrene 59. i-Propylbenzene 60. n-Propylbenzene 61. 2-Ethyltoluene 62. 3-Ethyltoluene 63. 4-Ethyltoluene 64. 1,2,3-Trimethylbenzene 65. 1,2,4-Trimethylbenzene 66. 1,3,5-Trimethylbenzene Cycloalkanes/-enes 67. Cyclopentane 68. Methylcyclopentane 69. Cyclohexane 70. Methylcyclohexane 71. Cyclopentene Sulfur Species 72. OCS 73. DMS 74. CS2 75. DMDS Halocarbons 76. CFC-11 77. CFC-12 78. CFC-113 79. CFC-114 80. CCl4 81. CH3CCl3 82. HCFC-22 83. HCFC-124 84. HCFC-141b 85. HCFC-142b 86. HFC-134a 87. HFC-152a 88. H-1211 89. H-1301 90. H-2402 91. CH3Cl 92. CH3Br 93. CH3I 94. CH2Cl2 95. CHCl3 96. CHBr3 97. C2Cl4 98. C2HCl3 99. CHBrCl2 100. CHBr2Cl 101. CH2Br2 102. Ethylchloride 103. 1,2-DCE
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This is how we roll 7 snakes loaded in our two racks (24 cans per snake) We will fill ~7 snakes per flight We will need to carry 14 snakes in cargo We will need ~1 hour to swap empty for filled snakes after each flight No prelim data available for weeks (but we get final data archived on or ahead of time) We can fill samples in ~10 seconds at low altitude We can fill samples in ~100 seconds at high altitude We can adjust our inlet valve to adjust sampling time to correspond to others (TOGA, PANTHER, etc.) We can fill on schedule or cued in by in situ instruments (or just holler)
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Possible additional measurements of WAS air after UCI analysis
Kristie Boering (UCB) N2O (δ15Nbulk, δ15Nα, δ15Nβ, and δ18O) Laurence Yeung (Rice) oxygen isotopes (18O18O) Amy Townsend-Small (U. of Cincinnati) methane isotopes δ13C and δD Suggestions?
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SARP 2011 missed approach into LAX (altitude in ft
SARP 2011 missed approach into LAX (altitude in ft.) vs fractional day (UTC)
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SARP 2011 missed approach into LAX ethane (ppt) vs fractional day (UTC)
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SARP 2011 missed approach into LAX methane (ppb) vs fractional day (UTC)
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SARP 2011 missed approach into LAX ethane (ppt) vs methane (ppb)
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