1. 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

2. 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

3. Window mount inlet/outlet

4. Snakes loaded and the “other” Dr. Blake

5. 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

6. 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

7. 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)

8. 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?

9. SARP 2011 missed approach into LAX (altitude in ft
SARP 2011 missed approach into LAX (altitude in ft.) vs fractional day (UTC)

10. SARP 2011 missed approach into LAX ethane (ppt) vs fractional day (UTC)

11. SARP 2011 missed approach into LAX methane (ppb) vs fractional day (UTC)

12. SARP 2011 missed approach into LAX ethane (ppt) vs methane (ppb)