Abstract

A need exists to express and visualize complex theories of climate change, particularly to nonspecialists. Policy decisions are now being debated and implemented that involve speculation on climate changes over thousands of years, such as those changes associated with the astronomical climate theory advanced by Yugoslavian astronomer Milutin Milankovitch. However, past methods for visualizing the insolation changes linked to the changes in Earth's orbital characteristics (eccentricity, obliquity, and precession) are not easily interpretable by non-specialists and the general public. A new algorithm that displays Quaternary radiation variations in a multi-color format on a sphere provides an efficient alternative to existing graphical methods. The visual image of a color-coded sphere, as opposed to a line plot, invokes an immediate conceptual relationship between insolation and global climatic changes. We found this new method is particularly beneficial for explaining variations in Milankovitch orbital the...

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