Table 1.

IceBridge ATM flight information. Note that all calculated quantitates (rows 3–13) are based on the permissible sea ice sections, as described in Section 3. The ice type classification is also described in more detail in Section 3 (rows 11–13).

Year	2009	2010	2011	2012	2013	2014
Start date (day/month)	31/03	23/03	16/03	14/03	20/03	12/03
End date (day/month)	25/04	21/04	15/04	10/04	25/04	28/04
ATM scan frequency (kHz)	5	5	3	3	3	3
ATM off-nadir scan angle (°)	15	23	15	15	15	15
Mean plane altitude (m)	480	446	464	480	472	476
Mean plane velocity (ms−1)	127	148	129	125	128	128
Along-track coverage (km)	8,762	14,505	10,080	24,625	18,092	21,028
Total ATM swath area (km2)	2,216	5,043	2,432	6,284	4,614	5,232
Mean ATM swath width (m)	253	348	241	255	255	249
Mean ATM pts per section	39,000	33,300	23,300	24,400	23,700	23,800
Mean shot spacing (m)	1.44	1.78	1.62	1.83	1.77	1.72
Mean P(99%) shot spacing (m)	3.08	3.84	3.38	3.93	3.78	3.65
Ice type coverage, All (FY/MY, %)	(23/56)	(11/80)	(7/83)	(33/59)	(35/52)	(14/79)
Ice type coverage, BC (FY/MY, %)	(55/22)	(41/42)	(50/28)	(74/18)	(68/18)	(31/61)
Ice type coverage, CA (FY/MY, %)	(4/73)	(2/90)	(2/90)	(7/86)	(3/87)	(1/94)