Michael Sigmond
LightNews LightNews
michaelsigmond.bsky.social
Michael Sigmond
@michaelsigmond.bsky.social
580 followers 46 following 1 posts
Climate scientist, CCCma, Environment and Climate Change Canada
Posts Replies Media Videos
michaelsigmond.bsky.social
www.linkedin.com/pulse/005-hi...
005 | The Hidden Cost of Cleaner Air? Earth System Warming
📘 Summary of: "Reduced Aerosol Pollution Diminished Cloud Reflectivity Over the North Atlantic and Northeast Pacific" by Knut von Salzen, Ayodeji Akingunola, Jason N. S.
www.linkedin.com
November 6, 2025 at 9:05 PM
Reposted by Michael Sigmond
climate.noaa.gov
Is the polar vortex responsible for the current cold snap over much of the U.S.?

Our experts discuss this in our most recent Polar Vortex Blog: www.climate.gov/news-feature...
The forecasted structure of the tropospheric jet stream (yellow) and several levels of the stratospheric polar vortex from the lower stratosphere to the upper stratosphere in the NOAA GFS model for 17 January 2025 (initialized on 16 January 2025).
January 21, 2025 at 9:34 PM
Reposted by Michael Sigmond
pjyng.bsky.social
A reminder that earth.nullschool.net is a great resource for visualising the weather now.

#StormDarragh visible in the surface image below; going to different pressure levels will help you see the jet stream.

(Thanks @cambecc.bsky.social!)
Image of mean sea-level pressure and 1000 hPa winds centred on the UK, from earth.nullschool.net
December 6, 2024 at 11:43 AM
Reposted by Michael Sigmond
copernicusecmwf.bsky.social
Here is why 2024 is virtually certain be the warmest year on record and first one above 1.5°C 👇
November 8, 2024 at 7:58 AM
Reposted by Michael Sigmond
simonleewx.com
I've made a starter pack of people who work on the stratosphere/middle atmosphere and/or often post about the stratosphere, including forecasts of the polar vortex.

Please do suggest anyone I've missed – quite hard to keep up with everyone on here now!

go.bsky.app/MxwzdEi
December 4, 2024 at 7:00 PM