|
Time series
|
Year range
|
b1number/year
|
b2number/Lyα
|
b
3
|
Lag (years)
|
|---|
|
Moscow relative NLC number
|
1990 to 2013
|
−0.001 ± 0.009
|
−0.15 ± 0.10
|
1.1 ± 0.5
|
0
|
|
Moscow relative NLC brightness
|
1990 to 2013
|
−0.040 ± 0.241
|
−3.48 ± 2.52
|
23.7 ± 12.4
|
0
|
|
Lithuanian relative NLC number
|
1992 to 2013
|
0.216 ± 0.317
|
−5.27 ± 3.15
|
50.3 ± 15.0
|
1
|
|
Canadian relative NLC number
|
1990 to 2013
|
0.048 ± 0.310
|
0.66 ± 3.13
|
10.9 ± 15.5
|
2
|
|
PMC frequency
|
1990 to 2013
|
−0.030 ± 0.035
|
−0.68 ± 0.36
|
5.0 ± 1.8
|
0
|
|
PMC albedo
|
1990 to 2013
|
−0.009 ± 0.031
|
−0.13 ± 0.28
|
5.9 ± 1.5
|
2
|
- The table contains the results of ground-based NLC observations and of the space-borne PMC measurements at 50 to 64°N (the latter are consistent with DeLand and Thomas (2014) and are provided by M. DeLand). Lag equal to 0 means that the NLC/PMC cycle is exactly in the anti-correlation with the solar cycle, while positive lag means that the maximum of NLC/PMC is delayed with respect to minimum of Ly alpha flux.
