Chris Weijenborg
@chrisweijenborg.bsky.social
Assistant Professor at the University of Wageningen, interested in atmospheric dynamics, extratropical cyclones, moisture transport and the storm tracks.
In a new preprint on a study lead by Rikke Stoffels, we looked at the pathways and moisture sources of these summer cyclones, which received less attention than their winter counterpart. #precipitation #cyclones #moisturesources egusphere.copernicus.org/preprints/20...
Precipitation, Moisture Sources and Transport Pathways associated with Summertime North Atlantic Deep Cyclones
Abstract. Extratropical cyclones are essential for redistributing moisture from lower latitudes to the poles, and are known for their ability to produce (extreme) precipitation. While wintertime extra...
egusphere.copernicus.org
April 27, 2025 at 2:17 PM
In a new preprint on a study lead by Rikke Stoffels, we looked at the pathways and moisture sources of these summer cyclones, which received less attention than their winter counterpart. #precipitation #cyclones #moisturesources egusphere.copernicus.org/preprints/20...
#StormEowyn is off to Norway, but the next one in the train of the same cluster of cyclones is approaching Ireland tomorrow, named #Herminia by the Spanish met service. Looks again a bit more a Shapiro-Keyser type cyclone, though this is less clear as that compared to Eowyn.
January 25, 2025 at 3:00 PM
#StormEowyn is off to Norway, but the next one in the train of the same cluster of cyclones is approaching Ireland tomorrow, named #Herminia by the Spanish met service. Looks again a bit more a Shapiro-Keyser type cyclone, though this is less clear as that compared to Eowyn.
Reposted by Chris Weijenborg
The intensity & structure of #StormÉowyn were certainly conducive to sting-jet descent. This satellite image would be consistent with it, as would be the timing and location of the record gust. However, we can't yet say whether the cold conveyor belt also played a role there 1/2
January 24, 2025 at 10:40 AM
The intensity & structure of #StormÉowyn were certainly conducive to sting-jet descent. This satellite image would be consistent with it, as would be the timing and location of the record gust. However, we can't yet say whether the cold conveyor belt also played a role there 1/2
Reposted by Chris Weijenborg
#StormÉowyn's development continues.
What in most cyclones of this type is at this stage a dry slot, is more of a dry sea within the centre of circulation.
Into it, air is descending from aloft & there's a chance of a 'sting jet' establishing at the cloud hook end (www.rmets.org/metmatters/w...).
What in most cyclones of this type is at this stage a dry slot, is more of a dry sea within the centre of circulation.
Into it, air is descending from aloft & there's a chance of a 'sting jet' establishing at the cloud hook end (www.rmets.org/metmatters/w...).
January 23, 2025 at 9:32 PM
#StormÉowyn's development continues.
What in most cyclones of this type is at this stage a dry slot, is more of a dry sea within the centre of circulation.
Into it, air is descending from aloft & there's a chance of a 'sting jet' establishing at the cloud hook end (www.rmets.org/metmatters/w...).
What in most cyclones of this type is at this stage a dry slot, is more of a dry sea within the centre of circulation.
Into it, air is descending from aloft & there's a chance of a 'sting jet' establishing at the cloud hook end (www.rmets.org/metmatters/w...).
Reposted by Chris Weijenborg
Airmass (theta-w) forecast of ICON-EU for the storm to hit Ireland soon
January 23, 2025 at 8:42 PM
Airmass (theta-w) forecast of ICON-EU for the storm to hit Ireland soon
#StormEowyn is predicted to intensify rapidly until reaching Ireland. Still some spread but most models agree with wind gusts up to 200+ km/hour (Arome as well) at land fall in Ireland, possibly related to a sting jet.
January 23, 2025 at 8:10 PM
#StormEowyn is predicted to intensify rapidly until reaching Ireland. Still some spread but most models agree with wind gusts up to 200+ km/hour (Arome as well) at land fall in Ireland, possibly related to a sting jet.
Very interesting case of cyclone clustering coming up at the end of the week. The atmospheric jet stream already intensified along the east coast of the USA/West Atlantic, which leads to the rapid deeping of
#StormEowyn later this week. Quite often these intense cyclones are warm core cyclones.
#StormEowyn later this week. Quite often these intense cyclones are warm core cyclones.
January 22, 2025 at 3:43 PM
Very interesting case of cyclone clustering coming up at the end of the week. The atmospheric jet stream already intensified along the east coast of the USA/West Atlantic, which leads to the rapid deeping of
#StormEowyn later this week. Quite often these intense cyclones are warm core cyclones.
#StormEowyn later this week. Quite often these intense cyclones are warm core cyclones.
Reposted by Chris Weijenborg
Soms moet je als politicus lege handen accepteren om te voorkomen dat je met te vuile handen achterblijft.
December 13, 2024 at 1:23 PM
Soms moet je als politicus lege handen accepteren om te voorkomen dat je met te vuile handen achterblijft.
Also interesting is the talk of Thomas Batelaan on the (lack) of changes in jet stream waviness in aquaplanet simulations:
vimeo.com/showcase/114...
Also available as paper at GRL:
agupubs.onlinelibrary.wiley.com/doi/full/10....
vimeo.com/showcase/114...
Also available as paper at GRL:
agupubs.onlinelibrary.wiley.com/doi/full/10....
The Response of Extreme Jet Stream Waviness on Large-Scale Spatial Warming on an Aquaplanet - Thomas J. Batelaan - UP3.2
This talk was given at the EMS Annual Meeting 2024 in Barcelona during the Session UP3.2 - Mid-latitude atmospheric teleconnection dynamics. …
vimeo.com
November 29, 2024 at 9:51 AM
Also interesting is the talk of Thomas Batelaan on the (lack) of changes in jet stream waviness in aquaplanet simulations:
vimeo.com/showcase/114...
Also available as paper at GRL:
agupubs.onlinelibrary.wiley.com/doi/full/10....
vimeo.com/showcase/114...
Also available as paper at GRL:
agupubs.onlinelibrary.wiley.com/doi/full/10....
I gave a presentation on this at the EMS in Barcelona last September, all the talks are now available online, this is the link to mine:
vimeo.com/showcase/114.... This talk includes also some thoughts on the relation to storm track biases and future changes which is not in the preprint.
vimeo.com/showcase/114.... This talk includes also some thoughts on the relation to storm track biases and future changes which is not in the preprint.
November 29, 2024 at 9:39 AM
I gave a presentation on this at the EMS in Barcelona last September, all the talks are now available online, this is the link to mine:
vimeo.com/showcase/114.... This talk includes also some thoughts on the relation to storm track biases and future changes which is not in the preprint.
vimeo.com/showcase/114.... This talk includes also some thoughts on the relation to storm track biases and future changes which is not in the preprint.
Cyclone Conall is affecting the northern part of the Netherlands tonight, but it seems that next week will be stormy and wet as well #cycloneclustering #conall:
wxcharts.com/gifs/N8XGova...
wxcharts.com/gifs/N8XGova...
November 27, 2024 at 2:08 PM
Cyclone Conall is affecting the northern part of the Netherlands tonight, but it seems that next week will be stormy and wet as well #cycloneclustering #conall:
wxcharts.com/gifs/N8XGova...
wxcharts.com/gifs/N8XGova...
Reposted by Chris Weijenborg
Recently we launched Journal of the European Meteorological Society, and the now the first papers are online! Till the end of the year all papers that are submitted will receive a 100% APC waiver, so take benefit of the opportunity!
Learn more at: www.sciencedirect.com/journal/jour...
Learn more at: www.sciencedirect.com/journal/jour...
LinkedIn
This link will take you to a page that’s not on LinkedIn
lnkd.in
November 25, 2024 at 6:10 PM
Recently we launched Journal of the European Meteorological Society, and the now the first papers are online! Till the end of the year all papers that are submitted will receive a 100% APC waiver, so take benefit of the opportunity!
Learn more at: www.sciencedirect.com/journal/jour...
Learn more at: www.sciencedirect.com/journal/jour...
Reposted by Chris Weijenborg
NEW POSITION: PhD Research Fellow in climate dynamics at the University of Bergen and the Bjerknes Centre for Climate Research. The position is for a fixed-term period of 3 years with the possibility of a 4th year with career-promoting work. Deadline: 1st January 2025🌊🧪
A good opportunity for a first post. Come work with us!
🌊 The University of Bergen is offering a PhD position in Climate Dynamics! 🌊
📅 Deadline: 1st January 2025
#PhD #ClimateScience #Oceanography #NorthAtlantic
More information: www.jobbnorge.no/en/available...
📅 Deadline: 1st January 2025
#PhD #ClimateScience #Oceanography #NorthAtlantic
More information: www.jobbnorge.no/en/available...
November 25, 2024 at 9:18 AM
NEW POSITION: PhD Research Fellow in climate dynamics at the University of Bergen and the Bjerknes Centre for Climate Research. The position is for a fixed-term period of 3 years with the possibility of a 4th year with career-promoting work. Deadline: 1st January 2025🌊🧪
Ik kan er zelf vanwege onderwijs er niet bij zijn maar ik ben hier volledig mee eens en hoop op een hoge opkomst!
Ik hoop dat vandaag honderden collega's op het Malieveld staan om een eind te maken aan de #eppocalyps.
Jongeren verdienen een toekomst en goed onderwijs is de beste manier om daarvoor te zorgen. En investeren in onderwijs levert nog geld op ook. #winwin
Jongeren verdienen een toekomst en goed onderwijs is de beste manier om daarvoor te zorgen. En investeren in onderwijs levert nog geld op ook. #winwin
November 25, 2024 at 10:28 AM
Ik kan er zelf vanwege onderwijs er niet bij zijn maar ik ben hier volledig mee eens en hoop op een hoge opkomst!
Reposted by Chris Weijenborg
An ERA5 animation showing the unprecedented November 2024 Typhoon outbreak in the Western Pacific Ocean.
Just incredible.
Just incredible.
November 21, 2024 at 7:23 PM
An ERA5 animation showing the unprecedented November 2024 Typhoon outbreak in the Western Pacific Ocean.
Just incredible.
Just incredible.
This week we discussed the shallow water equations and geostrophic adjustment in the dynamics class. Though it is very abstract, I think the final insight that geostrophic balance is reached is very satisfying:
November 22, 2024 at 2:30 PM
This week we discussed the shallow water equations and geostrophic adjustment in the dynamics class. Though it is very abstract, I think the final insight that geostrophic balance is reached is very satisfying:
Reposted by Chris Weijenborg
If you were wondering where to show your newest research results on severe storms next year: ESSL & KNMI are proud to announce the 12th ECSS, which will take place in Utrecht, Netherlands between 17 and 21 November 2025. Looking forward to seeing you there!
November 21, 2024 at 11:05 PM
If you were wondering where to show your newest research results on severe storms next year: ESSL & KNMI are proud to announce the 12th ECSS, which will take place in Utrecht, Netherlands between 17 and 21 November 2025. Looking forward to seeing you there!
Reposted by Chris Weijenborg
Registration open for on-line participation at a great Earth's Observation workshop w. hamds-on.Topics: EO data acquisition, processing, vis & classification using #julialang, by MIT, Harvard, NASA-JPL, UTAustin, @esaclimate.bsky.social, Max-Planck Institute, @eumetsat.bsky.social , Oxford Uni.🎢🌎🛰️🌊
JuliaEO25
JuliaEO25 - Global Workshop on Earth Observation With Julia
aircentre.github.io
November 21, 2024 at 10:15 AM
Registration open for on-line participation at a great Earth's Observation workshop w. hamds-on.Topics: EO data acquisition, processing, vis & classification using #julialang, by MIT, Harvard, NASA-JPL, UTAustin, @esaclimate.bsky.social, Max-Planck Institute, @eumetsat.bsky.social , Oxford Uni.🎢🌎🛰️🌊
Rapid deepening of cyclone Bert from 987 hPa to 939 hPa in just 1.5 days, will affect mainly Northern UK, meanwhile very mild air is advected to the north.
November 21, 2024 at 6:37 PM
Rapid deepening of cyclone Bert from 987 hPa to 939 hPa in just 1.5 days, will affect mainly Northern UK, meanwhile very mild air is advected to the north.
Reposted by Chris Weijenborg
Hi Bluesky, I've come over here to share our #EGU25 session. Are you researching weather and climate hazards? Submit an abstract to tell us about it! @tamarahappe.bsky.social @eunicelo.bsky.social @kornhuber.bsky.social
November 20, 2024 at 4:39 PM
Hi Bluesky, I've come over here to share our #EGU25 session. Are you researching weather and climate hazards? Submit an abstract to tell us about it! @tamarahappe.bsky.social @eunicelo.bsky.social @kornhuber.bsky.social
Reposted by Chris Weijenborg
#StormBert incoming this #weekend
From snow and ice towards wind and rain..
www.metoffice.gov.uk/about-us/new...
From snow and ice towards wind and rain..
www.metoffice.gov.uk/about-us/new...
Storm Bert named
A deep area of low pressure, which will bring impacts to large parts of the UK on Saturday and Sunday, has been named.
www.metoffice.gov.uk
November 21, 2024 at 11:38 AM
#StormBert incoming this #weekend
From snow and ice towards wind and rain..
www.metoffice.gov.uk/about-us/new...
From snow and ice towards wind and rain..
www.metoffice.gov.uk/about-us/new...
New preprint on the detection of two types of (serial) cyclone clustering in WCD: egusphere.copernicus.org/preprints/20...
Detection and global climatology of two types of cyclone clustering
Abstract. Cyclone clustering, the swift succession of multiple extratropical cyclones during a short period of time, is often associated with weather extremes and characterised by a strong atmospheric...
egusphere.copernicus.org
November 21, 2024 at 12:51 PM
New preprint on the detection of two types of (serial) cyclone clustering in WCD: egusphere.copernicus.org/preprints/20...
Reposted by Chris Weijenborg
A tongue of warm air for the next few days 📈🌡🤗
September 16, 2024 at 2:49 PM
A tongue of warm air for the next few days 📈🌡🤗
Reposted by Chris Weijenborg
Deadline 23 Sept: We are hiring a postdoc to work on extreme temperatures in a changing climate (broad scope). Please share and mention to colleagues who might be interested!
🚨Postdoc on extreme temperatures and climate change🚨
Part of a wider project using theory, simulations + obs to advance understanding of extreme temperatures in a changing climate. Application deadline 23 Sept, details ⬇️
www.vacancies.st-andrews.ac.uk/Vacancies/W/...
Part of a wider project using theory, simulations + obs to advance understanding of extreme temperatures in a changing climate. Application deadline 23 Sept, details ⬇️
www.vacancies.st-andrews.ac.uk/Vacancies/W/...
September 16, 2024 at 9:07 AM
Deadline 23 Sept: We are hiring a postdoc to work on extreme temperatures in a changing climate (broad scope). Please share and mention to colleagues who might be interested!