Monthly Archives: December 2021

Today, just for fun, I am going to present my personal explanation of what caused Wednesday’s extraordinary warm anomaly in the central part of North America. The weather maps are telling me that two separate and distinct atmospheric rivers (ARs) … Continue reading →

One part of the whole story I wrote about yesterday is well-illustrated, but I can’t reproduce the imagery on this website because everything depends on movement.  Is it really true that the total amount of overhead precipitable water (PW) above … Continue reading →

One of my primary objectives in writing these letters is simply to demonstrate what I consider to be a fact, that all of the precipitable water (PW) in the atmosphere generates a greenhouse energy effect, just like the long-life gases … Continue reading →

Something unusual is showing up on the weather maps these days, which I think is worth recording along with a commentary. We are seeing fairly strong jetstream wind activity emerging from both hemispheres on regular pathways that are now out … Continue reading →

Sea level rise is one of the most important impacts of climate change, and I’m sure every reader of these letters has an interest in its future development.  All kinds of widely varied projections have been made for this century, … Continue reading →

Not all atmospheric rivers (ARs) reach altitudes that are home to jetstream winds. These rivers carry high concentrations of precipitable water (PW), just like the others, are wind driven, perhaps in a more thorough way, and their contents can sometimes … Continue reading →

Today I will provide one more illustration of the fact that precipitable water (PW) has a powerful greenhouse energy effect. Every day there are a number of situations going on around the globe that provide the clearest possible evidence behind … Continue reading →

We are investigating the relationship between surface air temperatures over a large body of water and the temperature of the topmost layer of that water body itself–lets identify it as the top centimeter. As a rule these two layers will … Continue reading →

Take a close look at this global temperature chart, starting in 1880. There was a considerable amount of heavy volcanic activity during the first two decades of the 20th century, associated with cooling effects. From the early 1920s we can … Continue reading →

The daily weather maps that I constantly refer to for temperature anomalies have a baseline period of 1979-2000, which is only three decades, using 1990 as the mid-point of the averages. During those three decades we know from the consistently … Continue reading →