Climate Letter #355

Weakness in Brazil’s current wet season. The 2014-15 rainy season in Brazil is now 2/3 completed, and again falling below norm as it did last year, only worse. This post includes a sharp graph from NOAA that shows geographically how the two years rank. The post also includes a discussion of the situation by Robert Fanney, and some further links. I think of the Amazon rain forest as one of the three most important climate zones on the planet, based on far-reaching effects, along with the two polar zones. All three have shown marked deterioration during the course of the one-half degree global warming phase that began in 1975.  The next half degree sets the stage for disaster.

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A review of the global water shortage problem. Sao Paulo provides just a taste of what is on the way, as water conservation is sure to become a subject of attention and anxiety almost everywhere. Some usages of water will be viewed as absolutely necessary, others not so much, and those differences are likely to become a guide for conservation policies. Along that vein, you may want to keep in mind that production and consumption of fossil fuels, and nuclear as well, require vast amounts of fresh water to accomplish in many situations; solar and wind energy are exactly the opposite. There is data available on this subject that should already be getting more widespread exposure in general support of the latter.
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Progress in artificial photosynthesis. Caltech scientists believe they have overcome one of the roadblocks. Their goal is find an easy way to produce hydrogen by using sunlight to split water molecules.  The fuel cell industry is ready and waiting.
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New method of accounting for national carbon emissions. International agreements tend to involve wrangling over issues of responsibility. This is one way to assign responsibility more fairly than present methods, and might be useful. Note that the U.S. is one country that has burnished its emissions image by outsourcing dirty production.
Carl

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