Li, G.; Zhang, H.; Chen, S.; Qiu, J.; Wang, X. Assessing the impact of urban development on net primary productivity during 2000–2010 in Taihu Basin. Environ. Earth Sci. 2016, 75, 1266. [ Google Scholar] [ CrossRef] Iceland’s weather is milder in autumn and spring (if still very unpredictable), meaning less chance of cloud cover, although note that the window of opportunity for northern lights hunting is smaller due to the increased daylight hours.

Baumann, M.; Kuemmerle, T.; Elbakidze, M.; Ozdogan, M.; Radeloff, V.C.; Keuler, N.S.; Prishchepov, A.V.; Kruhlov, I.; Hostert, P. Patterns and drivers of post-socialist farmland abandonment in Western Ukraine. Land Use Policy 2011, 28, 552–562. [ Google Scholar] [ CrossRef] Sutton, P.; Roberts, D.; Elvidge, C.; Baugh, K. Census from Heaven: An estimate of the global human population using night-time satellite imagery. Int. J. Remote Sens. 2001, 22, 3061–3076. [ Google Scholar] [ CrossRef] Animated and color-changing lights — multiple settings allow a variety of colors and twinkling effects. The northern lights appear whenever there’s solar activity, but we can only spot them when it’s dark. Therefore northern lights tours only run in the winter months as the longer nights make the aurora borealis easier to spot. AbuZayd, K.; Sullivan, D.J.; Akram, S.M.; Roy, S. The Syrian Humanitarian Crisis: What Is to Be Done? Middle East Policy 2015, 22, 1–29. [ Google Scholar] [ CrossRef]January and February are bitterly cold in the Arctic regions, which can mean clearer skies. So for those determined to catch the northern lights, this is a good time to visit. Aurora activity is always unpredictable until very close to the date, but one of the advantages of going during this time of year is the opportunity to do snow-based activities such as skiing and dogsledding. November and December give long, dark winter nights that create a perfect opportunity to see the northern lights. In the Arctic Circle, there may be significant amounts of snowfall around this time of year, which inevitably means some periods of cloud cover. Skiing in Finnish Lapland (Alamy) When is the solar maximum?

Li, X.; Liu, S.; Jendryke, M.; Li, D.; Wu, C. Night-Time Light Dynamics during the Iraqi Civil War. Remote Sens. 2018, 10, 858. [ Google Scholar] [ CrossRef]Choosing the perfect Christmas lights will look a little different for everybody. There’s a large variety of colors and styles, and everyone has individual tastes. So there is no straight answer to when you can see the northern lights in Iceland since it isn’t just dependent on the season or month but also the meteorological and solar conditions. Iceland’s Northern Lights Season