Joanna Haigh, a solar physicist at Imperial College London, has spent a fair bit of research time investigating mechanisms that could potentially amplify solar changes into meaningful temperature variations on human timescales on Earth.

BBC: Solar predictions bring heat and light

While the anticipated crowd for Monday's events is expected to be about half of those who gathered four years ago, the temperature will be a bit higher than in 2009 when the high hovered around the freezing mark.

CNN: Obama officially begins 2nd term on Sunday

While the anticipated crowd for Monday's events is expected to be about half the size of the one that gathered four years ago, the temperature will be a bit higher than in 2009, when the high hovered around the freezing mark.

CNN: Obama sworn in to second term