Michael Sigmond
@michaelsigmond.bsky.social
Climate scientist, CCCma, Environment and Climate Change Canada
Reposted by Michael Sigmond
The ensemble mean from today's IFS subseasonal run almost predicts the earliest major sudden stratospheric warming on record 😮
Will be interesting to see if this signal progresses as it is just on the cusp of typical SSW prediction lead-times – daily runs of 101 members can still vary a fair bit
Will be interesting to see if this signal progresses as it is just on the cusp of typical SSW prediction lead-times – daily runs of 101 members can still vary a fair bit
November 12, 2025 at 8:32 PM
The ensemble mean from today's IFS subseasonal run almost predicts the earliest major sudden stratospheric warming on record 😮
Will be interesting to see if this signal progresses as it is just on the cusp of typical SSW prediction lead-times – daily runs of 101 members can still vary a fair bit
Will be interesting to see if this signal progresses as it is just on the cusp of typical SSW prediction lead-times – daily runs of 101 members can still vary a fair bit
Reposted by Michael Sigmond
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...
Our experts discuss this in our most recent Polar Vortex Blog: www.climate.gov/news-feature...
January 21, 2025 at 9:34 PM
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...
Our experts discuss this in our most recent Polar Vortex Blog: www.climate.gov/news-feature...
Reposted by Michael Sigmond
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!)
#StormDarragh visible in the surface image below; going to different pressure levels will help you see the jet stream.
(Thanks @cambecc.bsky.social!)
December 6, 2024 at 11:43 AM
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!)
#StormDarragh visible in the surface image below; going to different pressure levels will help you see the jet stream.
(Thanks @cambecc.bsky.social!)
Reposted by Michael Sigmond
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
Here is why 2024 is virtually certain be the warmest year on record and first one above 1.5°C 👇
Reposted by Michael Sigmond
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
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
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
Please do suggest anyone I've missed – quite hard to keep up with everyone on here now!
go.bsky.app/MxwzdEi