Working Paper（19-008E）The Earth Climate System as the Coupled Oscillators under the Quasi-Periodical Forcing from the Space

Earth temperature changes with greenhouse gas (1), but there are other variations that are caused by Earth's internal system such as El Niño (2), as well as by effects from space such as fluctuation of the Solar intensity (3). Existing studies have considered either factors (1) and (2), or factors (1) and (3), but none have considered all three together. This paper presents a hypothesis that attempts to integrate all these factors.

Section 2 explains (1), section 3 explains (3) and section 4 deals with (2). Section 5 introduces a simple quantitative model, and section 6 attempts a qualitative synthesis of factors (1)-(3).