Monthly Archives: September 2020

Portrait of a stream of water vapor flowing at high altitude. This is one that is renewed practically every day via massive emissions from trees in the Amazon rainforest. Note that part of the broad basin area is probably on … Continue reading →

Wherever there is water there is evaporation.  That’s even true for frozen water, except that it’s then called sublimation.  I believe it is correct to say that the warmer the temperature of the water is the faster the rate of … Continue reading →

What would happen if the Arctic Ocean were to lose all of its sea ice?  The trend in that direction is certainly underway, and for a quick update of relevant data you are invited to visit this site: https://ads.nipr.ac.jp/vishop/#/extent/&time=2019-04-01%2000:00:00. The … Continue reading →

What is meant by the expression, “high-altitude water vapor”? I use these words in almost every climate letterday as if they formed a real term having a special and well-accepted definition. In fact the term itself is real, having a … Continue reading →

Today we’ll go back to the high Arctic region on the Asiatic side, where a strong anomaly of up to 10C has moved into the Arctic Ocean, stretching all the way to the North Pole.  This is a different structure … Continue reading →

There is a rather large warm anomaly today covering most of North Africa, Europe and Arabia plus a piece of western Asia. It deserves a close look, more because of its size than its strength, which for the most part … Continue reading →

Every temperature anomaly has a story to tell. Something had to cause the anomaly to happen, and that cause is most likely itself an anomaly, behind which there are more causes and anomalies, etc., etc. In the case of a … Continue reading →

Some interesting things to point out on today’s weather maps. I’ll start by simply updating the high-altitude air pressure map that is ready to be seen at the top of Friday’s letter. The big bulge in the green zone to … Continue reading →

Re the strong fundamental relationship between high-altitude air pressure configuration, the global distribution of precipitable water and actual surface air temperatures.  The most solid indicators of that relationship are set up on a day like today, made possible only because … Continue reading →

Today I want to leave a record of some things I see going on in the northeast Pacific Ocean area.  We’ll start with an image from the PWat map, where the focus will be on a pair of streams emerging … Continue reading →