Monthly Archives: September 2020

Climate Letter #1767

Two days ago I raised a question about why so much of western US was showing up with a warm temperature anomaly when the Precipitable Water map reading was so low relative to most other places.  Yesterday and today show … Continue reading

Posted in Daily Climate Letters | Comments Off on Climate Letter #1767

Climate Letter #1766

Jennifer Francis is a well-known climate scientist who has authored many popular studies about the effect of jetstream developments on climate conditions in the Northern Hemisphere.  She and two colleagues have published a new report covering concerns created by the … Continue reading

Posted in Daily Climate Letters | Comments Off on Climate Letter #1766

Climate Letter #1765

The temperature anomaly map for the entire globe is full of interesting features and information today. The most troublesome is the upward bump in the numerical average for the entire Northern Hemisphere, +1.1C compared with an average day only three … Continue reading

Posted in Daily Climate Letters | Comments Off on Climate Letter #1765

Climate Letter #1764

Today there is a substantial warn anomaly appearing along and above the northern coast of western Siberia, as shown on the following map, with temperatures from 5 to 10C above normal over a large area. (This is an area where … Continue reading

Posted in Daily Climate Letters | Comments Off on Climate Letter #1764

Climate Letter #1763

Where does high-altitude water vapor come from, and how much is there? I want to pin this information down more accurately than I have in the past, and think I have found the right way to do so. The Weather … Continue reading

Posted in Daily Climate Letters | Comments Off on Climate Letter #1763

Climate Letter #1762

We need to take a closer look at the North American cold anomaly today. It’s hard for me to remember seeing anything comparable in overall size and extreme degree of abnormal cold on these maps outside of Antarctica. The patch … Continue reading

Posted in Daily Climate Letters | Comments Off on Climate Letter #1762

Climate Letter #1761

I just love the new jetstream map. It brings out details that no longer need to be assumed, plus a few new things. We can now see the complete pathways containing these winds, and exactly what causes the winds to … Continue reading

Posted in Daily Climate Letters | Comments Off on Climate Letter #1761

Climate Letter #1760

A big change today in the appearance of the jetstream weather map. The coloration is much bolder and brighter, isobar lines are much more visible, and individual jetstream pathways are given better continuity through improved shading of different wind velocities, … Continue reading

Posted in Daily Climate Letters | Comments Off on Climate Letter #1760

Climate Letter #1759

Today I noticed that almost the entire Australian continent was having a heatwave on the order of 5-7C, which might be worth investigating even though it’s not a thing to worry about with summer still a long way off. This … Continue reading

Posted in Daily Climate Letters | Comments Off on Climate Letter #1759

Climate Letter #1758

There is a coin-shaped cool anomaly just to the north of Kazakhstan today that is interesting because it is so completely sealed off by warm anomalies. We’ll look for whatever may be causing this situation, and see if we can … Continue reading

Posted in Daily Climate Letters | Comments Off on Climate Letter #1758