There are several of these large-scale circulations in each hemisphere that create several different jet streams. The subtropical jet stream usually drapes across the southern U.S., while the polar ...

How will jet streams shape our weather in a warmer future? Mario PicazoMeteorologist, PhD Published on Aug. 19, 2019, 12:14 PM Updated on Aug. 19, 2019, 12:58 PM ...

In Canada, the polar jet stream is responsible for many of our weather patterns. It is a narrow band of fast-moving air in the upper atmosphere that can help direct our weather systems.

But thanks to waves generated in the upper atmosphere, El Niño can also disrupt the polar vortex. That, in turn, can cause the jet stream to become more wavy, pushing Arctic air further south.

We have been stuck in a pattern dominated by warm temperatures and soupy dew points for several days. Fortunately, this ...

Content continues below This general pattern extends into the northern U.S. as well, but much of the country falls under the influence of the subtropical jet stream during an El Niño winter.

In just over 20 years, the northward shift of the subtropical jet stream — a high-altitude airflow — caused by climate change has reduced primary production in the northwestern Mediterranean ...

In just over 20 years, the northward shift of the subtropical jet stream—a high-altitude airflow—caused by climate change has reduced primary production in the northwestern Mediterranean by ...