Tag Archives: pacific storms

Typhoon Neoguri Image

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Despite the fact that Typhoon Neoguri shares a name with a well-known brand of packaged ramen, it certainly is no joking matter, as you can see from the impressive satellite image captured recently. Although the storm has weakened from a Category 4 Super Typhoon, it is still a powerful Category 3 storm currently churning up the East China Sea.

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This storm is bad news for Japan, especially the large populations living on the southernmost home island of Kyushu. Forecasters believe Neoguri will continue to weaken rapidly under the influence of increasing wind shear, but it is still set to make landfall on Kyushu some time Thursday as a Category 1 storm. The mountainous terrain of Kyushu will likely provide orographic enhancement for the rain bands coming off of Neoguri (the upslope side of the mountains facing Neoguri’s onslaught will have the tendency of squeezing out precipitation from the rain bands).

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Increased Pollution in Asia = Stronger Pacific Storms

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pollution in china
Buildings in Lianyungang, China, are shrouded in smog on December 8, 2013. Aerosol pollution from Asia is likely leading to stronger cyclones in the Pacific, more precipitation, and warming temperatures at the North Pole. – National Geographic

A recently published study a by a Texas A&M team led by professor of atmospheric sciences Renyi Zhang points to a possible link between increased air pollution from Asian sources and stronger Pacific storms. There are implications for global climate, including impacts on El Niño. Stronger Pacific storms would lead to increased precipitation in places like the Pacific Northwest.

At its most basic level, the theory behind this study is a fundamental to atmospheric science and is well understood. Water vapor that makes up clouds first need condensation nuclei, such as salt, dust, or in this case, pollutants in order to coalesce around and form clouds. An increase in the number of available condensation nuclei should in theory lead to more robust cloud growth, which allows for more energy to be released into the atmosphere through the latent heat of condensation. This in turn will allow for stronger convective clouds, thunderstorms, and cyclonic storms.