Here, we first present the highlights from each of the applications in Chapters 3–15. Then, we summarize the most outstanding features of the FS method.

Following the introduction and description of the methodology in Chapters 1–2, this book provides a theoretical investigation of the FS method and defines common principles and analytical explorations of the factors and their synergies, Chapter 3. It should be noted that most of the studies employing the FS method did it in the numerical modeling framework, which simply does not allow an analytical investigation of the methodology. Hence, Chapter 3 gives the results of the method application with some basic and simple mathematical functions, which serve as the mathematical basis for investigation of more complicated processes.

Chapter 4 presents a paleoclimate model analysis that allows better understanding of the role of the temperature–albedo feedback, of the greenhouse gases (water vapor and CO2), and of the insolation at the Last Glacial Maximum (LGM). The results are discussed using both the classical feedback analysis and the FS method. This helps to clarify the role the aforementioned factors play in the climate system. In particular, light is being shed on the seeming paradox that winters during mid-Holocene were milder than today in many regions of the Northern Hemisphere although the radiative forcing alone would cause a cooling.

In Chapter 5 we present three examples of factor separation on the medium scale in the atmosphere, often entitled meso-meteorology.