NASA SVS The Polar Jet Stream
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![](https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003864/jet_stream_print_res.jpg)
Meandering around the planet like a rollicking roller coaster in the sky, the Northern Hemisphere's polar jet stream is a fast-moving belt of westerly winds that traverses the lower layers of the atmosphere. The jet is created by the convergence of cold air masses descending from the Arctic and rising warm air from the tropics. Deep troughs and steep ridges emerge as the denser cold air sinks and deflects warm air regions north, giving the jet stream its wavy appearance. This pattern propagates across the mid-latitudes of North America, Europe and Asia, as pockets of cold air sporadically creep down from the Arctic - creating contrasting waves and flows that accelerate eastward due to Earth's rotation. Running from June 10 to July 8 of 1988, the visualization below uses weather and climate observations from NASA's MERRA dataset to model nearly a month of the jet stream's whirling journey over North America.
![](https://nasaviz.gsfc.nasa.gov/vis/a000000/a004400/a004469/newsun.00000_print.jpg)
NASA SVS
![](https://svs.gsfc.nasa.gov/vis/a010000/a010900/a010902/COVER_1024x576.jpg)
NASA SVS The Polar Jet Stream
![](https://svs.gsfc.nasa.gov/vis/a000000/a004100/a004171/jetstream_uk.0030.jpg)
SVS: European Jet Stream
![](https://nasaviz.gsfc.nasa.gov/vis/a000000/a005000/a005064/antarctic_sea_ice_w_dates.2024001_print.jpg)
NASA SVS
![](https://nasaviz.gsfc.nasa.gov/vis/a000000/a004600/a004601/JupiterQQOPreviewGlobal.jpg)
NASA SVS
![](https://svs.gsfc.nasa.gov/vis/a010000/a010900/a010902/STILL3_1024x576.jpg)
NASA SVS Aerial Superhighway
![](https://svs.gsfc.nasa.gov/vis/a000000/a004900/a004960/atmos_rivers_narrated_4k.00090_print.jpg)
NASA SVS
![](https://svs.gsfc.nasa.gov/vis/a010000/a014500/a014510/14510_VAPOR_WIDE_PRINT.jpg)
NASA SVS
![](https://svs.gsfc.nasa.gov/vis/a000000/a003800/a003864/jetstream.mp4.hwshow.thumb.png)
jetstream.mp4.hwshow.thumb.png
![](https://c8.alamy.com/comp/KRMRFH/this-is-the-nasa-visualization-explorer-the-coolest-way-to-get-stories-KRMRFH.jpg)
This is the NASA Visualization Explorer, the coolest way to get stories about advanced space-based research delivered right to your iPad. A direct connection to NASA's extraordinary fleet of research spacecraft, this
The Jet Stream National Oceanic and Atmospheric Administration
Jet Streams - Its formation and its affects on Weather
ESA - There's a jet stream in our core
File:Jet Stream.jpg - Wikimedia Commons
Jet Stream Gets Fish in Hot Water – Woods Hole Oceanographic Institution
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