Table 1.

Cooling rates for measured atmospheric profiles

p	z	T(p)a = 2010/01	2011/09	2011/09	2015/03	2016/01
		C(p)b = 2010/01	2011/09	2015/03	2015/03	2016/01
(mbar)	(km)	(K per day)	(K per day)	(K per day)	(K per day)	(K per day)
0.01	382	0.75	1.6	3.3	1.2	2.4
0.10	268	0.50	0.50	0.55	0.11	0.34
1.00	175	0.17	0.06	0.07	0.04	0.06

Cooling rates calculated at the 0.01, 0.1 and 1 mbar pressure levels, where p is the pressure and z is the corresponding altitude. No high spectral resolution limb data were available for the south pole between 2011 and 2015, but using the 2015 composition profile with the 2011 temperature profile shows that extreme trace gas enrichment significantly increases the mesospheric cooling rate at 0.01 mbar

^aIndicates year for the temperature profile T(p)

^bIndicates year for the composition profile C(p)