Monthly Archives: April 2015

Climate Letter #381

Growing prospect of a new record for global temperatures in 2015. The first three months have been reported as the hottest on record for that period, and the latest twelve months as well. What would seal the deal for all … Continue reading

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Climate Letter #380

An essay about two extreme episodes in Earth’s climate history. Both of the events have been covered recently in my letters. The essay puts them in perspective, relative to our current CO2 event, and also fills in some interesting details … Continue reading

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Climate Letter #379

Climate history: New details related to the “snowball earth” theory. These raise the possibility that truly super-cold conditions existed at the equator, similar to interior Antarctica today. No subject in Earth’s ancient climate history has more fascination than this one, the … Continue reading

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Climate Letter #378

More commentary on the warming of surface waters in the Northeastern Pacific, in an area referred to as “the blob.” Because it doesn’t want to go away, and has such profound effects, this phenomenon now ranks very near the top of … Continue reading

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Climate Letter #377

El Nino update. There are a growing number of forecasts that a much stronger El Nino pattern will emerge later this year. This is how Robert Fanney, who is a good student of this subject, describes the prospect, including helpful images. … Continue reading

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Climate Letter #376

Monthly CO2 report for March. About 2ppm over last year, which is a quite normal number these days, but the steady upward march in the air’s level continues. (It will only stop rising when emissions fall to zero.) There are … Continue reading

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Climate Letter #375

The declining trend of EROI (Energy Return on Investment.) This report is based on the concept of how much energy is required to find, produce and deliver the energy that is finally used to advantage. For fossil fuels the trend … Continue reading

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Climate Letter #374

What it will take to hold global warming below 2C. For this review the answer is expressed in terms of the quantity of known fossil fuel reserves that must be left in the ground, remaining unburned. A regional breakdown is … Continue reading

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Climate Letter #373

The outlook for mountain glaciers. In a word, bleak, as the rapid pace of melting continues. A new report is out, based on a new modeling technique, which brings the whole story up to date. One big item is the possibility of … Continue reading

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Climate Letter #372

Potential spike in temperatures foreseen. That is the opinion of Kevin Trenberth, a highly respected and generally conservative climatologist. His argument centers around observed movement of an index that measures the Pacific Decadal Oscillation (PDO), which is displayed on a chart in … Continue reading

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