Table 1 from Boering et al., Geophys. Res. Lett, 2004: NASA ER-2 Measurements

Flight Date	Altitude (km)^a	Latitude^b	Potential Temp (K)	N2O (ppb)^c	d^17OCO2 ‰	d^18OCO2 ‰	D^17OCO2 ‰
970426	19.1	72.2	502	154	25.13	41.52	3.71
	19.2	75.6	503	187	23.70	40.27	2.92
	19.2	79.0	506	249	22.28	40.15	1.56
	19.2	82.5	505	205	22.93	39.78	2.40
	19.2	86.1	502	128	24.31	39.14	4.11
	19.1	88.7	501	97	26.19	40.76	5.16
	15.6	89.0	421	217	23.46	40.74	2.44
	17.7	87.4	463	141	26.28	42.71	4.24
	19.6	84.5	513	131	25.31	40.41	4.45
970506	16.8	78.2	461	263	22.28	40.63	1.32
	19.4	74.2	513	198	23.92	41.03	2.75
970509	19.4	64.5	505	218	23.71	41.40	2.35
970511	13.7	62.9	388	292	20.58	38.57	0.68
	11.3	64.3	357	303	21.11	39.78	0.58
970626	18.6	75.5	488	195	22.86	39.05	2.71
	16.4	75.9	441	237	21.74	38.54	1.86
	18.9	73.7	493	170	23.78	39.51	3.40
	18.4	57.4	472	223	23.15	40.84	2.08
970629	19.7	54.5	500	220	23.05	40.38	2.21
	20.5	48.4	505	239	23.06	41.03	1.89
	20.8	60.4	527	104	28.20	43.75	5.63
970630	14.5	63.7	394	296	19.24	36.43	0.44
	18.6	66.5	480	260	22.31	40.67	1.32
	20.6	64.1	524	82	28.61	43.57	6.13
970707	19.3	78.6	506	211	23.66	41.16	2.43
	19.4	81.6	504	205	23.37	40.34	2.55
	19.2	89.6	497	195	24.62	41.83	3.04
970710	15.8	64.0	421	274	21.83	40.38	1.00
	20.0	65.9	514	210	22.93	40.05	2.26

^a Average range: 0.08±0.08 km (max=0.27, typical<0.05)

^b Range: 0.01 to 0.44^o

^c Average range: 3.7±3.9 ppbv

ACKNOWLEDGMENTS:

This material is based upon work supported by the National Science Foundation under Grant No. 0096504. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.