Charles Powell
@cpowell.bsky.social
PDRA @ ICCS, DAMTP, University of Cambridge
Bye-Fellow @ Emmanuel College
More details: https://cwp.io
Bye-Fellow @ Emmanuel College
More details: https://cwp.io
Reposted by Charles Powell
The June issue of @rmets.org Weather is online now! This is a Special Issue, with contributions from prize winners at last year’s Early Career and Student Conference.
Plus, all the main articles in this issue are fully Open Access ✅
Check it out now: rmets.onlinelibrary.wiley.com/toc/14778696...
Plus, all the main articles in this issue are fully Open Access ✅
Check it out now: rmets.onlinelibrary.wiley.com/toc/14778696...
June 3, 2025 at 3:42 PM
The June issue of @rmets.org Weather is online now! This is a Special Issue, with contributions from prize winners at last year’s Early Career and Student Conference.
Plus, all the main articles in this issue are fully Open Access ✅
Check it out now: rmets.onlinelibrary.wiley.com/toc/14778696...
Plus, all the main articles in this issue are fully Open Access ✅
Check it out now: rmets.onlinelibrary.wiley.com/toc/14778696...
May 19, 2025 at 1:05 PM
Reposted by Charles Powell
Not the answer but it’s a start github.com/rmkenv/disas...
GitHub - rmkenv/disaster-data-replicator: Data pipeline for replicating NOAA's Billion-Dollar Disasters Database using NWS and FEMA APIs
Data pipeline for replicating NOAA's Billion-Dollar Disasters Database using NWS and FEMA APIs - rmkenv/disaster-data-replicator
github.com
May 8, 2025 at 9:27 PM
Not the answer but it’s a start github.com/rmkenv/disas...
Reposted by Charles Powell
The cloud has got its hat on today
April 21, 2025 at 2:29 PM
The cloud has got its hat on today
Neat clouds from Bern, Switzerland. Lenticular (ish) and KH (ish).
April 3, 2025 at 10:03 AM
Neat clouds from Bern, Switzerland. Lenticular (ish) and KH (ish).
Successful eclipse viewing with the Mark I Colander
March 29, 2025 at 11:08 AM
Successful eclipse viewing with the Mark I Colander
Science in action
Entertaining chalkboard writing (in the male toilets…) at the QSQ stratosphere workshop in Cambridge this week 🤓
March 26, 2025 at 5:58 PM
Science in action
Reposted by Charles Powell
Undular bore clouds move over the Gulf south of Texas.
March 25, 2025 at 7:30 PM
Undular bore clouds move over the Gulf south of Texas.
Reposted by Charles Powell
Can climate models reproduce observed trends?
The answer can be challenging. Our new review paper in Science Advances led by Isla Simpson and Tiffany Shaw @drshaw.bsky.social discusses challenges and ways forward in confronting climate models and observations.
www.science.org/doi/10.1126/...
The answer can be challenging. Our new review paper in Science Advances led by Isla Simpson and Tiffany Shaw @drshaw.bsky.social discusses challenges and ways forward in confronting climate models and observations.
www.science.org/doi/10.1126/...
March 13, 2025 at 8:48 AM
Can climate models reproduce observed trends?
The answer can be challenging. Our new review paper in Science Advances led by Isla Simpson and Tiffany Shaw @drshaw.bsky.social discusses challenges and ways forward in confronting climate models and observations.
www.science.org/doi/10.1126/...
The answer can be challenging. Our new review paper in Science Advances led by Isla Simpson and Tiffany Shaw @drshaw.bsky.social discusses challenges and ways forward in confronting climate models and observations.
www.science.org/doi/10.1126/...
Reposted by Charles Powell
Happy that our (@iccscambridge.bsky.social) JOSS paper on FTorch has been accepted and is now out. This is a really neat library, smoothly enabling coupling of ML models developed in PyTorch into Fortran code, now being used in various climate models (+ other scientific domains too). Well done team!
Just published in JOSS: 'FTorch: a library for coupling PyTorch models to Fortran' https://doi.org/10.21105/joss.07602
March 6, 2025 at 2:31 PM
Happy that our (@iccscambridge.bsky.social) JOSS paper on FTorch has been accepted and is now out. This is a really neat library, smoothly enabling coupling of ML models developed in PyTorch into Fortran code, now being used in various climate models (+ other scientific domains too). Well done team!
The cold tropical tropopause limits water vapour concentrations in air that rises into the lower stratosphere. Strong, deep convection can avoid this constraint, injecting moisture that influences chemistry and radiative balance.
Read our review article in Weather here!
doi.org/10.1002/wea....
Read our review article in Weather here!
doi.org/10.1002/wea....
Moisture transport by convective overshoots in the tropical tropopause layer
Deep convection overshooting the tropical tropopause offers the potential for significant transport of moisture into the tropical tropopause layer (TTL) by avoiding the cold-point temperature constra....
doi.org
March 4, 2025 at 8:36 PM
The cold tropical tropopause limits water vapour concentrations in air that rises into the lower stratosphere. Strong, deep convection can avoid this constraint, injecting moisture that influences chemistry and radiative balance.
Read our review article in Weather here!
doi.org/10.1002/wea....
Read our review article in Weather here!
doi.org/10.1002/wea....
Perfect day for some coaching
January 25, 2025 at 8:09 PM
Perfect day for some coaching
Reposted by Charles Powell
The extreme cyclone headed towards Ireland & the UK is a direct result of the upcoming southern US snowstorm - strong cold air advection into the Gulf of Mexico leads to an intense baroclinic wave developing and rapidly deepening as it traverses the North Atlantic:
January 21, 2025 at 2:03 AM
The extreme cyclone headed towards Ireland & the UK is a direct result of the upcoming southern US snowstorm - strong cold air advection into the Gulf of Mexico leads to an intense baroclinic wave developing and rapidly deepening as it traverses the North Atlantic:
Reposted by Charles Powell
A jet-stream fired up by the current North American coldwave will lead to a phenomenon known as a "Cyclone Family" in the North Atlantic.
Multiple deep low pressure areas develop and take a similar track late January (close to the British Isles)
More info: www.nature.com/articles/s41...
Multiple deep low pressure areas develop and take a similar track late January (close to the British Isles)
More info: www.nature.com/articles/s41...
January 20, 2025 at 9:07 PM
A jet-stream fired up by the current North American coldwave will lead to a phenomenon known as a "Cyclone Family" in the North Atlantic.
Multiple deep low pressure areas develop and take a similar track late January (close to the British Isles)
More info: www.nature.com/articles/s41...
Multiple deep low pressure areas develop and take a similar track late January (close to the British Isles)
More info: www.nature.com/articles/s41...
Reposted by Charles Powell
The potential is there for a very nasty storm for NW Ireland on Friday morning depending on the placement of the depression. UKV is particularly concerning showing gusts in excess of 100 mph (160 km/h) for exposed NW coasts.
January 20, 2025 at 9:18 PM
The potential is there for a very nasty storm for NW Ireland on Friday morning depending on the placement of the depression. UKV is particularly concerning showing gusts in excess of 100 mph (160 km/h) for exposed NW coasts.
Reposted by Charles Powell
ICYMI - 2024 was also the hottest year on record for our oceans. Unfortunately, we now say this every year. 🥹🌊
+ Data: www.ocean.iap.ac.cn
+ Study: doi.org/10.1007/s003...
+ Summary: www.carbonbrief.org/state-of-the...
+ Data: www.ocean.iap.ac.cn
+ Study: doi.org/10.1007/s003...
+ Summary: www.carbonbrief.org/state-of-the...
January 18, 2025 at 9:53 PM
ICYMI - 2024 was also the hottest year on record for our oceans. Unfortunately, we now say this every year. 🥹🌊
+ Data: www.ocean.iap.ac.cn
+ Study: doi.org/10.1007/s003...
+ Summary: www.carbonbrief.org/state-of-the...
+ Data: www.ocean.iap.ac.cn
+ Study: doi.org/10.1007/s003...
+ Summary: www.carbonbrief.org/state-of-the...
Finalising some figures of an idealised deep convective cloud top. Reassuring when simulations resemble observations!
January 18, 2025 at 9:37 PM
Finalising some figures of an idealised deep convective cloud top. Reassuring when simulations resemble observations!
Ice crystals are beautiful!
January 11, 2025 at 9:39 PM
Ice crystals are beautiful!
Working with the climate science team at Inigo insurance, I've written a retrospective on the 2024 hurricane season. We look at why forecasts predicted such an active season, why activity died down during the climatological peak, and what we might expect in the future.
Check it out here!
Check it out here!
Hurricane Season 2024 retrospective | Inigo
by Charles Powell (University of Cambridge) and Ruth Petrie (Inigo) Key points Forecasts for the season Coming into the 2024 hurricane season, almost all forecasts pointed towards an above average sea...
inigoinsurance.com
December 5, 2024 at 10:09 AM
Working with the climate science team at Inigo insurance, I've written a retrospective on the 2024 hurricane season. We look at why forecasts predicted such an active season, why activity died down during the climatological peak, and what we might expect in the future.
Check it out here!
Check it out here!
Reposted by Charles Powell
Having had the pleasure to work on this fascinating project with the potential for big impacts across the globe, please do share far and wide with anyone interested in a cutting-edge PhD opportunity in lovely to develop a brand new source of atmospheric observations!
www.exeter.ac.uk/study/fundin...
www.exeter.ac.uk/study/fundin...
Award details | Funding and scholarships for students | University of Exeter
www.exeter.ac.uk
November 25, 2024 at 12:12 PM
Having had the pleasure to work on this fascinating project with the potential for big impacts across the globe, please do share far and wide with anyone interested in a cutting-edge PhD opportunity in lovely to develop a brand new source of atmospheric observations!
www.exeter.ac.uk/study/fundin...
www.exeter.ac.uk/study/fundin...
At this time of year, it’s hard not to go slightly blind when taking cool cloud photos…
November 13, 2024 at 10:52 PM
At this time of year, it’s hard not to go slightly blind when taking cool cloud photos…
My first PhD publication has just been released!
doi.org/10.1017/jfm....
We consider a buoyant plume with a passive tracer penetrating into a stably stratified layer. This idealised flow is representative of many geophysical flows, for example tropical deep convection.
🧵⬇️
doi.org/10.1017/jfm....
We consider a buoyant plume with a passive tracer penetrating into a stably stratified layer. This idealised flow is representative of many geophysical flows, for example tropical deep convection.
🧵⬇️
Diagnosing tracer transport in convective penetration of a stably stratified layer | Journal of Fluid Mechanics | Cambridge Core
Diagnosing tracer transport in convective penetration of a stably stratified layer - Volume 997
doi.org
October 17, 2024 at 12:59 PM
My first PhD publication has just been released!
doi.org/10.1017/jfm....
We consider a buoyant plume with a passive tracer penetrating into a stably stratified layer. This idealised flow is representative of many geophysical flows, for example tropical deep convection.
🧵⬇️
doi.org/10.1017/jfm....
We consider a buoyant plume with a passive tracer penetrating into a stably stratified layer. This idealised flow is representative of many geophysical flows, for example tropical deep convection.
🧵⬇️
Shelf cloud over the Centre for Mathematical Sciences in Cambridge earlier today
September 12, 2024 at 7:25 PM
Shelf cloud over the Centre for Mathematical Sciences in Cambridge earlier today
Hints of mammatus?
September 11, 2024 at 2:09 PM
Hints of mammatus?