Category Archives: Daily Climate Letters

This is a followup on the ideas presented in yesterday’s letter. We are focused on why the “blue zone” on the high-altitude air pressure map is structured as we see it each day. This is interesting because of real-world implications—a … Continue reading →

Yesterday’s letter described the processes behind the formation of hot and cold temperature anomalies on a daily basis. These anomalies have more volatility in the Arctic than anywhere else on the globe. They are created by the highly irregular distribution … Continue reading →

Every day we have been looking at peculiar mixtures of hot and cold temperature anomalies over North America. Every following day there is a whole new set of anomalies, many of them tied to new locations. The ratio of hot … Continue reading →

We are embarked on a daily analysis of why the Arctic is warming much faster than the rest of the world—about four times as fast according to a recent study in Nature.  Our baseline period, 1979-2000, is fairly short, making … Continue reading →

What’s happened to Arctic amplification (AA)? Eight days ago the Arctic temperature average was +4.0C degrees, today a bare 0.2C. This puts it below the global average for a change, instead of up to seven times greater: The Arctic region … Continue reading →

What a world of difference one week can make! Last Sunday I happened to notice how extremely warm the Arctic anomaly was, and figured it deserved a special climate letter. This is what I saw: Now, one week later, the … Continue reading →

Abbreviated climate letters will be posted on weekends from now on while daily changes in Arctic temperature anomalies are being investigated. These original image collections could prove to have value as archives. As described in recent letters, the Arctic’s air … Continue reading →

Out of curiosity, I have been doing more research on temperature trend comparisons. Is Arctic amplification (AA) actually adding to the overall results for the Northern Hemisphere? If so, would this not be speeding up the overall results for the … Continue reading →

We are now engaged in a daily analysis of Arctic Amplification (AA), with the special intent of investigating the role of precipitable water (PW) as a principal cause of any unusual warming.  Everything is illustrated with imagery provided by Today’s … Continue reading →

The Climate Letter is now devoted to investigating one of the possible sources of Arctic Amplification (AA). This is a unique opportunity for me to contribute something of value to science, which makes the project a personal priority. I want … Continue reading →