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Debunking the Solar-Cycle/North Atlantic Winter Weather Connection

A new Nature Geoscience study from Applied Physics and Applied Mathematics (APAM) and Lamont Doherty researchers has upended a commonly accepted theory that variations in the energy emitted by the sun affect weather patterns in the North Atlantic and the likelihood of storms and floods over Europe. The North Atlantic Oscillation (NAO) is considered a key driver of winter weather patterns over the northern hemisphere. A positive NAO is linked with more windstorms, and mild and wet winters in Europe. A negative NAO indicates snowy and cold winters in Europe.

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Non-chemisorbed gold–sulfur binding prevails in self-assembled monolayers

Research from Professor Latha Venaktaraman's group was recently published in the artcile, "Non-chemisorbed gold–sulfur binding prevails in self-assembled monolayers," in Nature Chemistry. Improved mechanistic understanding will help answer the question of how predominantly chemisorbed sulfur-gold SAMs can be reliably formed under ambient conditions, if at all. This will help focus efforts to identify new linker groups, and/or preparation methods, that facilitate the construction of more stable SAMs with increased electronic transparency and stability. The effect of surface pre-treatments on the molecule-substrate bonding of gold-thiol SAMs is likely also a rich area of further study/reinterpretation.

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Tippett: Is climate change making U.S. tornadoes worse?

“Whether this is climate change or not, what all the studies have shown is that this particular part of the U.S. has been having more tornado activity and more tornado outbreaks than it has had in decades before,” said Mike Tippett, a Columbia University applied mathematician who studies the climate. Photo by REUTERS/Elijah Nouvelage

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