It is well agreed upon that the global temperatures are trending upward, and Earth’s climate is impacted by these increasing temperatures. While there are regional differences to the impact of global climate change, there are evident effects globally. Fluctuations in solar energy delivered to Earth is a factor in Earth’s climate and temperature changes. The fluctuations in solar energy are a factor that cannot be changed. However, some of the influences on global climate changes are due to human contribution, which can be changed. The purpose of this paper is to review long-term fluctuations to global temperature change and their relationship and impact to other essential global variables. Some regional projections are used to present a view of effects of these findings. Real data analysis with separation of scales is intensively used to deliver all inferences.