Carlos Calvo-Sancho
@ccalvosa.bsky.social
PhD | Researcher focus on tropical meteorology and severe weather
☈ Severe Weather @Supercelulas ☈
carlos.calvo.sancho@uva.es
https://ccalvosa.github.io/
☈ Severe Weather @Supercelulas ☈
carlos.calvo.sancho@uva.es
https://ccalvosa.github.io/
Estos últimos días estoy leyendo mucho que el tren de borrascas es debido una mayor meandrización del jet. Sin embargo, no creo que esa sea una de las causas ya que el jet en nuestra zona está completamente zonal. El único meandro notable es al W de Norte América. Habrá que investigarlo...
February 5, 2026 at 8:50 AM
Estos últimos días estoy leyendo mucho que el tren de borrascas es debido una mayor meandrización del jet. Sin embargo, no creo que esa sea una de las causas ya que el jet en nuestra zona está completamente zonal. El único meandro notable es al W de Norte América. Habrá que investigarlo...
Reposted by Carlos Calvo-Sancho
The hydrological situation across a large part of the Iberian Peninsula is alarming, to say the least, and conditions are set to worsen as several powerful atmospheric rivers are forecast; major flooding cannot be ruled out.
February 2, 2026 at 3:46 PM
The hydrological situation across a large part of the Iberian Peninsula is alarming, to say the least, and conditions are set to worsen as several powerful atmospheric rivers are forecast; major flooding cannot be ruled out.
🌀 New in npj Climate and Atmospheric Science: Our study links climate warming to stronger environments for North Atlantic Tropical Transitions. We find a significant Northeastward expansion of these conditions, increasing potential risks for Europe.
📖 doi.org/10.1038/s416...
📖 doi.org/10.1038/s416...
January 12, 2026 at 3:37 PM
🌀 New in npj Climate and Atmospheric Science: Our study links climate warming to stronger environments for North Atlantic Tropical Transitions. We find a significant Northeastward expansion of these conditions, increasing potential risks for Europe.
📖 doi.org/10.1038/s416...
📖 doi.org/10.1038/s416...
Reposted by Carlos Calvo-Sancho
⚒️ Article: The frequency of very large hail events increased most in Europe and decreased most in South America between 1950 and 2023
@essl-ecss.bsky.social
www.nature.com/articles/s41...
@essl-ecss.bsky.social
www.nature.com/articles/s41...
Contrasting trends in very large hail events and related economic losses across the globe - Nature Geoscience
The frequency of very large hail events between 1950 and 2023 increased most in Europe and decreased most in South America because of variations in atmospheric humidity and instability, according to a...
www.nature.com
December 29, 2025 at 4:00 PM
⚒️ Article: The frequency of very large hail events increased most in Europe and decreased most in South America between 1950 and 2023
@essl-ecss.bsky.social
www.nature.com/articles/s41...
@essl-ecss.bsky.social
www.nature.com/articles/s41...
Reposted by Carlos Calvo-Sancho
Just in - "According to @climatecentral.org, 2025 ranks as the third-highest year (after 2023 and 2024) for billion-dollar weather and climate disasters..."
+ Interactive graphics/data: www.climatecentral.org/climate-serv...
+ Climate Matters article: www.climatecentral.org/climate-matt...
+ Interactive graphics/data: www.climatecentral.org/climate-serv...
+ Climate Matters article: www.climatecentral.org/climate-matt...
January 8, 2026 at 1:59 PM
Just in - "According to @climatecentral.org, 2025 ranks as the third-highest year (after 2023 and 2024) for billion-dollar weather and climate disasters..."
+ Interactive graphics/data: www.climatecentral.org/climate-serv...
+ Climate Matters article: www.climatecentral.org/climate-matt...
+ Interactive graphics/data: www.climatecentral.org/climate-serv...
+ Climate Matters article: www.climatecentral.org/climate-matt...
Reposted by Carlos Calvo-Sancho
The administration of US President Donald Trump intends to dismantle the National Center for Atmospheric Research (NCAR), a world-leading Earth-science centre in Boulder, Colorado.
go.nature.com/4pjzUqB
go.nature.com/4pjzUqB
Trump team plans to break up ‘global mothership’ of climate science
Much of the National Center for Atmospheric Research’s non-climate portfolio will be dispersed, the White House says.
go.nature.com
December 17, 2025 at 7:51 PM
The administration of US President Donald Trump intends to dismantle the National Center for Atmospheric Research (NCAR), a world-leading Earth-science centre in Boulder, Colorado.
go.nature.com/4pjzUqB
go.nature.com/4pjzUqB
Reposted by Carlos Calvo-Sancho
⚒️ Article: Extreme daily precipitation events over land could increase by 41% by 2100 with an increase in mesoscale moisture convergence
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Future extreme precipitation amplified by intensified mesoscale moisture convergence - Nature Geoscience
Extreme daily precipitation events over land could increase by about 41% by 2100 under a high-emissions scenario with an increase in mesoscale moisture convergence, according to an ensemble of climate...
www.nature.com
November 18, 2025 at 4:30 PM
⚒️ Article: Extreme daily precipitation events over land could increase by 41% by 2100 with an increase in mesoscale moisture convergence
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Carlos Calvo-Sancho
The greatest atmospheric ballet! Large, highly visible snow mesovortices rolling down a convergence band over Lake Michigan on 2024/01/19. Perhaps the most beautiful radar data NEXRAD has ever produced. This is a 14 hour loop showing the ridiculously high number of them that developed sequentially
November 11, 2025 at 1:44 AM
The greatest atmospheric ballet! Large, highly visible snow mesovortices rolling down a convergence band over Lake Michigan on 2024/01/19. Perhaps the most beautiful radar data NEXRAD has ever produced. This is a 14 hour loop showing the ridiculously high number of them that developed sequentially
Este jueves 6 de noviembre a las 16H impartiré un seminario sobre el impacto del cambio climático en el sistema convectivo que provocó las catastróficas inundaciones de Valencia de 2024.
El seminario será en la Facultad de Físicas de la UCM y online:
meet.google.com/ome-bwwy-avf
El seminario será en la Facultad de Físicas de la UCM y online:
meet.google.com/ome-bwwy-avf
November 4, 2025 at 10:33 AM
Este jueves 6 de noviembre a las 16H impartiré un seminario sobre el impacto del cambio climático en el sistema convectivo que provocó las catastróficas inundaciones de Valencia de 2024.
El seminario será en la Facultad de Físicas de la UCM y online:
meet.google.com/ome-bwwy-avf
El seminario será en la Facultad de Físicas de la UCM y online:
meet.google.com/ome-bwwy-avf
Reposted by Carlos Calvo-Sancho
☀️🌧️ Extreme weather events are increasing 🌀🌤
Our new paper discusses the range of extreme weather attribution methods available and how we should be combining them to improve confidence in our attribution statements
with co-authors: @marylouathanase.bsky.social & Shirin Ermis
doi.org/10.1002/wea....
Our new paper discusses the range of extreme weather attribution methods available and how we should be combining them to improve confidence in our attribution statements
with co-authors: @marylouathanase.bsky.social & Shirin Ermis
doi.org/10.1002/wea....
The need for multi‐method extreme event attribution
Over the past 20 years, extreme event attribution has developed rapidly, providing a wide range of methods to attribute weather events – from unconditioned probabilistic to strongly conditioned story...
rmets.onlinelibrary.wiley.com
November 3, 2025 at 9:32 AM
☀️🌧️ Extreme weather events are increasing 🌀🌤
Our new paper discusses the range of extreme weather attribution methods available and how we should be combining them to improve confidence in our attribution statements
with co-authors: @marylouathanase.bsky.social & Shirin Ermis
doi.org/10.1002/wea....
Our new paper discusses the range of extreme weather attribution methods available and how we should be combining them to improve confidence in our attribution statements
with co-authors: @marylouathanase.bsky.social & Shirin Ermis
doi.org/10.1002/wea....
Reposted by Carlos Calvo-Sancho
Alrighty, ready to see something really cool? (and maybe a little nauseating)
The evolution of Hurricane Melissa's mesovortices at peak strength.
The evolution of Hurricane Melissa's mesovortices at peak strength.
October 29, 2025 at 8:10 PM
Alrighty, ready to see something really cool? (and maybe a little nauseating)
The evolution of Hurricane Melissa's mesovortices at peak strength.
The evolution of Hurricane Melissa's mesovortices at peak strength.
Reposted by Carlos Calvo-Sancho
No olvidéis registraros en las próximas Jornadas JICLIM, que se llevará a cabo en Zaragoza! ¿Nos vemos allí?🎉
📢 II Jornadas de Jóvenes Investigadores del Clima
🗓️ 13-14 nov 2025 · Zaragoza (presencial+online)
Charlas, workshop GEE, coloquio y salida de campo 🏞️
Inscripción gratis hasta el 7/11
🔗 shorturl.at/Jvyns
📩 jiclim@aeclim.org
#Clima #CienciaJoven #AEC
🗓️ 13-14 nov 2025 · Zaragoza (presencial+online)
Charlas, workshop GEE, coloquio y salida de campo 🏞️
Inscripción gratis hasta el 7/11
🔗 shorturl.at/Jvyns
📩 jiclim@aeclim.org
#Clima #CienciaJoven #AEC
October 6, 2025 at 7:48 AM
No olvidéis registraros en las próximas Jornadas JICLIM, que se llevará a cabo en Zaragoza! ¿Nos vemos allí?🎉
Reposted by Carlos Calvo-Sancho
[EN] @remote-nico.bsky.social and I are very happy to share with you our paper just published in Tethys (@acam_cat), titled: "Assessment of tornado damage utilizing Sentinel-2 imagery and orthophoto maps: case studies in the Balearic Islands"
🔗 doi.org/10.3369/teth...
🔗 doi.org/10.3369/teth...
October 6, 2025 at 6:14 AM
[EN] @remote-nico.bsky.social and I are very happy to share with you our paper just published in Tethys (@acam_cat), titled: "Assessment of tornado damage utilizing Sentinel-2 imagery and orthophoto maps: case studies in the Balearic Islands"
🔗 doi.org/10.3369/teth...
🔗 doi.org/10.3369/teth...
Reposted by Carlos Calvo-Sancho
📣ECMWF’s Real-time Catalogue is now open to all, supporting global efforts to improve early warnings and build resilience.
Find out more about what this means and the importance of attribution ➡️ www.ecmwf.int/en/about/med...
Find out more about what this means and the importance of attribution ➡️ www.ecmwf.int/en/about/med...
October 1, 2025 at 12:17 PM
📣ECMWF’s Real-time Catalogue is now open to all, supporting global efforts to improve early warnings and build resilience.
Find out more about what this means and the importance of attribution ➡️ www.ecmwf.int/en/about/med...
Find out more about what this means and the importance of attribution ➡️ www.ecmwf.int/en/about/med...
ECMWF makes its entire Real-time Catalogue open to all www.ecmwf.int/en/about/med...
ECMWF makes its entire Real-time Catalogue open to all
ECMWF has made its Real-time Catalogue open, advancing its open data strategy and supporting global efforts to improve early warnings and build resilience.
www.ecmwf.int
October 1, 2025 at 10:02 AM
ECMWF makes its entire Real-time Catalogue open to all www.ecmwf.int/en/about/med...
Reposted by Carlos Calvo-Sancho
Two years ago today: atmospheric perfection over rural Oklahoma. I'd have believed in gods too if I saw this before knowing what it was. #photography
September 23, 2025 at 7:29 PM
Two years ago today: atmospheric perfection over rural Oklahoma. I'd have believed in gods too if I saw this before knowing what it was. #photography
Reposted by Carlos Calvo-Sancho
When tornadoes, hail & extreme winds threaten communities, earlier warnings mean everything. Our researchers are advancing severe storm forecasting and studies to safeguard communities and assist government agencies, forecasters, and private companies. https://bit.ly/4n0TKGB
September 23, 2025 at 5:49 PM
When tornadoes, hail & extreme winds threaten communities, earlier warnings mean everything. Our researchers are advancing severe storm forecasting and studies to safeguard communities and assist government agencies, forecasters, and private companies. https://bit.ly/4n0TKGB
Reposted by Carlos Calvo-Sancho
Reposted by Carlos Calvo-Sancho
Watch Gabrielle evolve from a lopsided tropical storm to a major hurricane in less than 48 hours.
Circle extends about 600 km from the storm center. Intensity values are interpolated to hourly resolution to match the infrared images, rounded to 5-kt increments in line with NHC precision.
Circle extends about 600 km from the storm center. Intensity values are interpolated to hourly resolution to match the infrared images, rounded to 5-kt increments in line with NHC precision.
September 22, 2025 at 3:32 PM
Watch Gabrielle evolve from a lopsided tropical storm to a major hurricane in less than 48 hours.
Circle extends about 600 km from the storm center. Intensity values are interpolated to hourly resolution to match the infrared images, rounded to 5-kt increments in line with NHC precision.
Circle extends about 600 km from the storm center. Intensity values are interpolated to hourly resolution to match the infrared images, rounded to 5-kt increments in line with NHC precision.
Reposted by Carlos Calvo-Sancho
📢 II Jornadas de Jóvenes Investigadores del Clima
🗓️ 13-14 nov 2025 · Zaragoza (presencial+online)
Charlas, workshop GEE, coloquio y salida de campo 🏞️
Inscripción gratis hasta el 7/11
🔗 shorturl.at/Jvyns
📩 jiclim@aeclim.org
#Clima #CienciaJoven #AEC
🗓️ 13-14 nov 2025 · Zaragoza (presencial+online)
Charlas, workshop GEE, coloquio y salida de campo 🏞️
Inscripción gratis hasta el 7/11
🔗 shorturl.at/Jvyns
📩 jiclim@aeclim.org
#Clima #CienciaJoven #AEC
September 19, 2025 at 7:11 AM
📢 II Jornadas de Jóvenes Investigadores del Clima
🗓️ 13-14 nov 2025 · Zaragoza (presencial+online)
Charlas, workshop GEE, coloquio y salida de campo 🏞️
Inscripción gratis hasta el 7/11
🔗 shorturl.at/Jvyns
📩 jiclim@aeclim.org
#Clima #CienciaJoven #AEC
🗓️ 13-14 nov 2025 · Zaragoza (presencial+online)
Charlas, workshop GEE, coloquio y salida de campo 🏞️
Inscripción gratis hasta el 7/11
🔗 shorturl.at/Jvyns
📩 jiclim@aeclim.org
#Clima #CienciaJoven #AEC
From Tarragona to Firenze: new WMed Derecho?
August 28, 2025 at 9:48 PM
From Tarragona to Firenze: new WMed Derecho?
Hoy es el peor día de la ola de calor en Zaragoza, superando +42ºC. Sin embargo, lo que más destaca son las mínimas: 7 potenciales días seguidos con mínimas +25ºC.
Hasta el año 2023, el Aeropuerto de Zaragoza no había registrado una mínima +25ºC.
Hasta el año 2023, el Aeropuerto de Zaragoza no había registrado una mínima +25ºC.
August 11, 2025 at 10:30 AM
Hoy es el peor día de la ola de calor en Zaragoza, superando +42ºC. Sin embargo, lo que más destaca son las mínimas: 7 potenciales días seguidos con mínimas +25ºC.
Hasta el año 2023, el Aeropuerto de Zaragoza no había registrado una mínima +25ºC.
Hasta el año 2023, el Aeropuerto de Zaragoza no había registrado una mínima +25ºC.
Reposted by Carlos Calvo-Sancho
The heatwave in Sodankylä has now lasted for 26 days.
This is probably not only the longest heatwave in Lapland, but also the longest heatwave ever observed in Finland.
Note that here a heatwave is defined with 3 consecutive days above 90th percentile, which is scientifically robust definition.
This is probably not only the longest heatwave in Lapland, but also the longest heatwave ever observed in Finland.
Note that here a heatwave is defined with 3 consecutive days above 90th percentile, which is scientifically robust definition.
August 5, 2025 at 8:24 AM
The heatwave in Sodankylä has now lasted for 26 days.
This is probably not only the longest heatwave in Lapland, but also the longest heatwave ever observed in Finland.
Note that here a heatwave is defined with 3 consecutive days above 90th percentile, which is scientifically robust definition.
This is probably not only the longest heatwave in Lapland, but also the longest heatwave ever observed in Finland.
Note that here a heatwave is defined with 3 consecutive days above 90th percentile, which is scientifically robust definition.
Reposted by Carlos Calvo-Sancho
Extreme Greenland melting event right now: thawing over 80% of the surface. Seen before only once in the record melt summer 2012.
See more at @polarportal.bsky.social!
See more at @polarportal.bsky.social!
July 21, 2025 at 9:56 AM
Extreme Greenland melting event right now: thawing over 80% of the surface. Seen before only once in the record melt summer 2012.
See more at @polarportal.bsky.social!
See more at @polarportal.bsky.social!
Reposted by Carlos Calvo-Sancho
📣 New paper:
💧💧💧 In July 2021 record breaking rainfall hit western Europe, we use ensemble boosting to explore different plausible storylines. These show it could have rained for longer, or over a larger area, or in a different place. Are we prepared?
doi.org/10.1038/s432...
💧💧💧 In July 2021 record breaking rainfall hit western Europe, we use ensemble boosting to explore different plausible storylines. These show it could have rained for longer, or over a larger area, or in a different place. Are we prepared?
doi.org/10.1038/s432...
July 8, 2025 at 10:06 AM
📣 New paper:
💧💧💧 In July 2021 record breaking rainfall hit western Europe, we use ensemble boosting to explore different plausible storylines. These show it could have rained for longer, or over a larger area, or in a different place. Are we prepared?
doi.org/10.1038/s432...
💧💧💧 In July 2021 record breaking rainfall hit western Europe, we use ensemble boosting to explore different plausible storylines. These show it could have rained for longer, or over a larger area, or in a different place. Are we prepared?
doi.org/10.1038/s432...