Table 3. Transport Statistics and Chemical Characteristics of Individual Asian Plumesa



	Background	1 Jul	2 Aug	20 Jul	14 Aug	15 Jul
		Plume A	Plume B				
Minutes sampled		29	33	102	60	17	14
Export mechanismb		convection	WCB	Convection, typhoon	WCB	WCB, typhoon	WCB
Altitude,c km		6.5-11.5	6.5-11.0	7.5-10.5	5-8	8-10	7-10
Transport time,d days		3	5	5-9	8	8-9	9
O3, ppbv	73	88 (81)	106 (81)	110 (89)	93 (77)	83 (80)	73 (66)
CO, ppbv	95	131 (125)	124 (111)	135 (95)	125 (111)	107 (91)	117 (117)
H2O, ppmv	719	371	498	455	596	133	869
Relative humidity, %	49	57	60	55	37	52	69
NOx, pptv	290	140 (48)	160 (42)	270 (166)	410 (193)	420 (100)	390 (84)
PAN, pptv	300	550 (259)	480 (295)	620 (257)	680 (306)	410 (197)	570 (341)
SigmaPNs, pptv	300	430	370	550	530	210	610
HNO3, pptv	250	120 (181)	190 (206)	590 (358)	290 (256)	150 (267)	210 (244)
HNO4, pptv	55	65	65	120	60	40	100
NOy, pptv	880	870 (595)	900 (518)	1590 (772)	1440 (749)	1020 (562)	1260 (648)
SO2, pptv	35	10 (9)	60 (10)	25 (10)	50 (19)	70 (100)	40 (9)
HCN, pptv	290	440	450	430	380	470	350
CH3CN, ppptv	150	160	170	160	160	160	180
CH3OOH, pptv	220	240	170	130	180	140	130
H2O2, pptv	510	1030 (828)	1090 (882)	390 (361)	510 (525)	310 (315)	420 (829)
HCHO, pptv	240	NAe (70)	NAe (70)	130 (134)	200 (216)	320 (50)	280 (223)
C2H6, pptv	720	920 (1063)	840 (1081)	900 (723)	850 (814)	810 (656)	980 (913)
C2H4, pptv	3	5	5	4	6	34	8
C2H2, pptv	80	170	160	170	160	130	120
C3H8, pptv	140	120 (218)	110 (224)	150 (104)	160 (134)	190 (91)	230 (164)
C2H2, pptv	13	30	29	18	27	18	23
Acetone, ppbv	1.46	2.59 (0.80)	1.47 (0.86)	2.05 (0.73)	2.29 (0.95)	1.49 (0.54)	1.47 (1.30)
Methanol, ppbv	1.32	2.60	1.49	2.06	2.22	1.90	3.98
Ethanol, pptv	100	230	60	170	90	210	270
CH4, ppbv	1791	1816	1808	1821	1810	1805	NA
7Be, fCi/m3	500	270	230	630	1262	570	760
NO3-, pptv	30	140	100	40	20	40	20
SO42-, pptv	60	120 (137)	165 (130)	90 (49)	130 (62)	100 (106)	60 (94)
C2O42-, pptv	6	12	15	19	14	8	6
NH4+, pptv	70	170 (376)	210 (356)	110 (190)	140 (157)	110 (186)	70 (190)
Na+, pptv	110	1880	120	40	60	50	170
K+, pptv	30	15	50	15	15	15	60
Mg2+, pptv	7	13	10	14	8	18	4
Ca2+, pptv	22	120	15	20	20	95	15
Fine sulfate aerosol, pptv	80	110	160	40	130	80	70
Model Asian O3, ppbv	6	14	17	6	8	9	3
Model Asian CO, ppbv	14	29	37	26	24	25	20


aModeled trace gas mixing ratios are shown in parentheses. For individual Asian plumes, concentrations of trace gases that are significantly enhanced with respect to background are in bold. Numbers in italics indicate that fewer than 5 measurement points were available.
bExport mechanisms are determined by examining surface weather charts, SLP fields, and model convective diagnostics.
cAltitude range of the plumes sampled by the DC-8 aircraft.
dTransport time is estimated using back trajectories.
eNA, not available.