Monthly Archives: August 2020

I want to keep a monthly record of how high-altitude air pressure in the polar regions changes over the course of a year, so here is an update of both images.  The Arctic has already taken on a much more … Continue reading →

Today there is a fine example of the importance of water vapor as an agency of single-day temperature anomalies.  It is happening in the Southern Hemisphere, where both Australia and Antarctica are exhibiting warm ones having considerable strength. We see … Continue reading →

“Single-day temperature anomalies.”  I like this term, and plan to keep using it.  I think it should become part of the scientific vocabulary, because it represents a class of natural phenomena that are very real, very well-defined, and arguably important … Continue reading →

Today I want to pick up from where I left off at the end of yesterday’s letter by asking a question:  “In all of organized climate science, as taught in the universities, is there any such thing as a complete … Continue reading →

Late last week I devoted two letters (CL#1748-9) to analysis of a strong cold anomaly in South America.  It was attributed to a combination of two completely different kinds of activity caused by the presence of a long and powerful … Continue reading →

There is something new to look for now in the Weather Maps. Every day I make a quick check of sea surface temperature anomalies on the maps, paying special attention to average increases in the Northern Hemisphere, which lately have … Continue reading →

We’re going back to that South American cold anomaly today. It has a number of unique features that make it not just extra interesting but also extra difficult to properly explain. Cold anomalies of this size and intensity are very … Continue reading →

Yesterday we looked at the principal physical mechanism that causes the pattern of high altitude air pressure to be configured in the manner observed, keyed to differences in surface air temperatures.  Today I wanted to write about the effect that … Continue reading →

Some comments today on the Weather Map chart that is the most difficult to understand, named “500hPa Geopot. Height (dam)”. Everything about it seems like gibberish, except maybe for a few people who are graduate students or have actual degrees. … Continue reading →

Today I was doing a follow-up study of the big warm anomaly reviewed in yesterday’s letter and learned something of considerable interest that I think is worth writing about. We’ll be using mostly the same images, updated by one day, … Continue reading →