Mann Research Group
@mannresearch.bsky.social
Research group for Dr. Michael E. Mann at the University of Pennsylvania
For more information: https://web.sas.upenn.edu/mannresearchgroup/
For more information: https://web.sas.upenn.edu/mannresearchgroup/
Pinned
The 2025 Atlantic Hurricane Season: University of Pennsylvania Forecast is now live!
🧵 1/5 🌧️🌀 | @michaelemann.bsky.social
🧵 1/5 🌧️🌀 | @michaelemann.bsky.social
🚨 Key highlights from the new publication by @mackenzieweaver.bsky.social, @andrajgarner.bsky.social, @dhrubasamanta.bsky.social, @michaelemann.bsky.social and Benjamin Horton
🔗 Article Link: www.nature.com/articles/s43...
#TropicalCyclones #CoastalHazards #ClimateChange
🔗 Article Link: www.nature.com/articles/s43...
#TropicalCyclones #CoastalHazards #ClimateChange
Insights
⬆️Genesis shifting northward across seasons
📈Winter monsoon genesis could more than double; summer up to 50%
🏝️Landfall patterns evolving Philippines in winter/spring, mainland SE Asia in summer/autumn
🌡️Humidity & wind shear increasingly influence summer/autumn genesis
@penncssm.bsky.social
⬆️Genesis shifting northward across seasons
📈Winter monsoon genesis could more than double; summer up to 50%
🏝️Landfall patterns evolving Philippines in winter/spring, mainland SE Asia in summer/autumn
🌡️Humidity & wind shear increasingly influence summer/autumn genesis
@penncssm.bsky.social
November 5, 2025 at 5:55 PM
🚨 Key highlights from the new publication by @mackenzieweaver.bsky.social, @andrajgarner.bsky.social, @dhrubasamanta.bsky.social, @michaelemann.bsky.social and Benjamin Horton
🔗 Article Link: www.nature.com/articles/s43...
#TropicalCyclones #CoastalHazards #ClimateChange
🔗 Article Link: www.nature.com/articles/s43...
#TropicalCyclones #CoastalHazards #ClimateChange
Reposted by Mann Research Group
🚨New paper alert! 🚨
Delighted to share that our new research led by Kenzie Weaver, exploring seasonal variations in tropical cyclone genesis and landfall for Southeast Asia, has been published today in @natureportfolio.nature.com Communications Earth and Environment!
share.google/D1LoDNSgmhs1...
Delighted to share that our new research led by Kenzie Weaver, exploring seasonal variations in tropical cyclone genesis and landfall for Southeast Asia, has been published today in @natureportfolio.nature.com Communications Earth and Environment!
share.google/D1LoDNSgmhs1...
Seasonal variations of tropical cyclone genesis and landfall patterns impacting Southeast Asia in a warmer climate - Communications Earth & Environment
In Southeast Asia, tropical cyclone genesis is projected to shift northward with more seasonal activity and altered landfall patterns, according to analysis of seasonal-scale tropical cyclone genesis ...
share.google
November 3, 2025 at 4:15 PM
🚨New paper alert! 🚨
Delighted to share that our new research led by Kenzie Weaver, exploring seasonal variations in tropical cyclone genesis and landfall for Southeast Asia, has been published today in @natureportfolio.nature.com Communications Earth and Environment!
share.google/D1LoDNSgmhs1...
Delighted to share that our new research led by Kenzie Weaver, exploring seasonal variations in tropical cyclone genesis and landfall for Southeast Asia, has been published today in @natureportfolio.nature.com Communications Earth and Environment!
share.google/D1LoDNSgmhs1...
Reposted by Mann Research Group
🌏 New study in @commsearth.nature.com!
Led by Kenzie Weaver, our team explores how tropical cyclone genesis and landfall patterns in Southeast Asia are shifting seasonally under future warming.
www.nature.com/articles/s43...
@michaelemann.bsky.social @andrajgarner.bsky.social @NTUSingapore
Led by Kenzie Weaver, our team explores how tropical cyclone genesis and landfall patterns in Southeast Asia are shifting seasonally under future warming.
www.nature.com/articles/s43...
@michaelemann.bsky.social @andrajgarner.bsky.social @NTUSingapore
Seasonal variations of tropical cyclone genesis and landfall patterns impacting Southeast Asia in a warmer climate - Communications Earth & Environment
In Southeast Asia, tropical cyclone genesis is projected to shift northward with more seasonal activity and altered landfall patterns, according to analysis of seasonal-scale tropical cyclone genesis ...
www.nature.com
November 4, 2025 at 3:31 AM
🌏 New study in @commsearth.nature.com!
Led by Kenzie Weaver, our team explores how tropical cyclone genesis and landfall patterns in Southeast Asia are shifting seasonally under future warming.
www.nature.com/articles/s43...
@michaelemann.bsky.social @andrajgarner.bsky.social @NTUSingapore
Led by Kenzie Weaver, our team explores how tropical cyclone genesis and landfall patterns in Southeast Asia are shifting seasonally under future warming.
www.nature.com/articles/s43...
@michaelemann.bsky.social @andrajgarner.bsky.social @NTUSingapore
🚨 New Publication in @commsearth.nature.com
This new study led by MRG grad student @mackenzieweaver.bsky.social explores tropical cyclone genesis and landfall patterns in warming climates to understand seasonal storm patterns and impacts in Southeast Asia
Article: doi.org/10.1038/s432...
This new study led by MRG grad student @mackenzieweaver.bsky.social explores tropical cyclone genesis and landfall patterns in warming climates to understand seasonal storm patterns and impacts in Southeast Asia
Article: doi.org/10.1038/s432...
Seasonal variations of tropical cyclone genesis and landfall patterns impacting Southeast Asia in a warmer climate - Communications Earth & Environment
In Southeast Asia, tropical cyclone genesis is projected to shift northward with more seasonal activity and altered landfall patterns, according to analysis of seasonal-scale tropical cyclone genesis ...
doi.org
November 4, 2025 at 3:13 PM
🚨 New Publication in @commsearth.nature.com
This new study led by MRG grad student @mackenzieweaver.bsky.social explores tropical cyclone genesis and landfall patterns in warming climates to understand seasonal storm patterns and impacts in Southeast Asia
Article: doi.org/10.1038/s432...
This new study led by MRG grad student @mackenzieweaver.bsky.social explores tropical cyclone genesis and landfall patterns in warming climates to understand seasonal storm patterns and impacts in Southeast Asia
Article: doi.org/10.1038/s432...
Reposted by Mann Research Group
"Seasonal variations of tropical cyclone genesis and landfall patterns impacting Southeast Asia in a warmer climate" | New article in @nature.com Communications Earth & Environment, led by my graduate student @mackenzieweaver.bsky.social: www.nature.com/articles/s43...
Seasonal variations of tropical cyclone genesis and landfall patterns impacting Southeast Asia in a warmer climate - Communications Earth & Environment
In Southeast Asia, tropical cyclone genesis is projected to shift northward with more seasonal activity and altered landfall patterns, according to analysis of seasonal-scale tropical cyclone genesis ...
www.nature.com
November 3, 2025 at 4:39 PM
"Seasonal variations of tropical cyclone genesis and landfall patterns impacting Southeast Asia in a warmer climate" | New article in @nature.com Communications Earth & Environment, led by my graduate student @mackenzieweaver.bsky.social: www.nature.com/articles/s43...
We're excited to join Dr. Kate Staley, Dr. Beth Mark and @penncssm.bsky.social today for an open and supportive conversation to share our thoughts and feelings about climate change!
@michaelemann.bsky.social | #upenn #penncssm #climatechange #climateanxiety
@michaelemann.bsky.social | #upenn #penncssm #climatechange #climateanxiety
Climate Cafe | Join Dr. Kate Staley & Dr. Beth Mark on 10/14 @ 12pm in Hayden Hall to share your feelings and experiences in this uncertain time of human-caused warming.
Space is limited so you must register to attend: www.eventbrite.com/e/climate-ca...
🧵 2/4 | @michaelemann.bsky.social
Space is limited so you must register to attend: www.eventbrite.com/e/climate-ca...
🧵 2/4 | @michaelemann.bsky.social
October 14, 2025 at 2:44 PM
We're excited to join Dr. Kate Staley, Dr. Beth Mark and @penncssm.bsky.social today for an open and supportive conversation to share our thoughts and feelings about climate change!
@michaelemann.bsky.social | #upenn #penncssm #climatechange #climateanxiety
@michaelemann.bsky.social | #upenn #penncssm #climatechange #climateanxiety
Thank you to everyone who came out to support the amazing student presentations in the 1.5* min lecture series! It was great to hear from MRG student Chris Larson on the loss of the Greenland ice sheet and @penncssm.bsky.social student Nat Glasgow on linguistic injustice in climate communication
October 13, 2025 at 7:11 PM
Thank you to everyone who came out to support the amazing student presentations in the 1.5* min lecture series! It was great to hear from MRG student Chris Larson on the loss of the Greenland ice sheet and @penncssm.bsky.social student Nat Glasgow on linguistic injustice in climate communication
Reposted by Mann Research Group
Seems relevant today...
"Strongest nor’easters getting stronger" | Brief piece on our recent @pnas.org article in @upenn.edu's #PennToday: penntoday.upenn.edu/news/penn-sa...
Strongest nor’easters getting stronger | Penn Today
Research from Professor Michael Mann and Ph.D. students Annabelle Horton and Mackenzie Weaver shows that as the worst of these East Coast winter storms intensify, so does their destructive potential—a...
penntoday.upenn.edu
October 12, 2025 at 8:24 PM
Seems relevant today...
Happy Climate Week at Penn! We are kicking the week off strong with a 1.5* min lecture from MRG grad student Chris Larson today under the Climate Week Tent @ 12pm. See you all there rain or shine!
@michaelemann.bsky.social | #climateweek 🌎🌧️
climateweek.provost.upenn.edu/event/15-min...
@michaelemann.bsky.social | #climateweek 🌎🌧️
climateweek.provost.upenn.edu/event/15-min...
1.5* Minute Student Climate Lectures | Climate Week
Join us Monday, October 13, for the 1.5* Minute Student Climate Lectures, inspired by the School of Arts & Sciences 1.5* Minute Climate Lecture series.
climateweek.provost.upenn.edu
October 13, 2025 at 1:00 PM
Happy Climate Week at Penn! We are kicking the week off strong with a 1.5* min lecture from MRG grad student Chris Larson today under the Climate Week Tent @ 12pm. See you all there rain or shine!
@michaelemann.bsky.social | #climateweek 🌎🌧️
climateweek.provost.upenn.edu/event/15-min...
@michaelemann.bsky.social | #climateweek 🌎🌧️
climateweek.provost.upenn.edu/event/15-min...
Reposted by Mann Research Group
"Penn’s sixth annual Climate Week to highlight global ‘climate hotspots’ with over 50 events" by Norah Findley for the @dailypenn.bsky.social: www.thedp.com/article/2025...
#PennClimateWeek
#PennClimateWeek
Penn’s sixth annual Climate Week to highlight global ‘climate hotspots’ with over 50 events
Many of the events are organized in partnership with various schools and organizations across Penn, mirroring the collaborative strategy outlined in the new Climate and Sustainability Action Plan.
www.thedp.com
October 13, 2025 at 2:40 AM
"Penn’s sixth annual Climate Week to highlight global ‘climate hotspots’ with over 50 events" by Norah Findley for the @dailypenn.bsky.social: www.thedp.com/article/2025...
#PennClimateWeek
#PennClimateWeek
Reposted by Mann Research Group
The start of #PennClimateWeek is just days away and we're excited to share all of our upcoming events!
🧵 1/4
@michaelemann.bsky.social | @upenn.edu | #climatecomms
climateweek.provost.upenn.edu
🧵 1/4
@michaelemann.bsky.social | @upenn.edu | #climatecomms
climateweek.provost.upenn.edu
Climate Week Home | Climate Week
climateweek.provost.upenn.edu
October 8, 2025 at 7:49 PM
The start of #PennClimateWeek is just days away and we're excited to share all of our upcoming events!
🧵 1/4
@michaelemann.bsky.social | @upenn.edu | #climatecomms
climateweek.provost.upenn.edu
🧵 1/4
@michaelemann.bsky.social | @upenn.edu | #climatecomms
climateweek.provost.upenn.edu
Welcome to @upenn.edu Class of 2029! 🔴🔵
Want to learn more about the defining challenge of our time?
Consider taking EESC 2300: Global Climate Change with @michaelemann.bsky.social. This course introduces processes impacting global climate and highlights changes in future climate projections.
Want to learn more about the defining challenge of our time?
Consider taking EESC 2300: Global Climate Change with @michaelemann.bsky.social. This course introduces processes impacting global climate and highlights changes in future climate projections.
August 25, 2025 at 6:53 PM
Welcome to @upenn.edu Class of 2029! 🔴🔵
Want to learn more about the defining challenge of our time?
Consider taking EESC 2300: Global Climate Change with @michaelemann.bsky.social. This course introduces processes impacting global climate and highlights changes in future climate projections.
Want to learn more about the defining challenge of our time?
Consider taking EESC 2300: Global Climate Change with @michaelemann.bsky.social. This course introduces processes impacting global climate and highlights changes in future climate projections.
Reposted by Mann Research Group
Two articles in @pnas.org by the @mannresearch.bsky.social over the past month demonstrate why *the truth is bad enough*. We don't have to exaggerate the climate crisis to justify urgent and immediate climate action.
apnews.com/article/extr...
insideclimatenews.org/news/1407202...
apnews.com/article/extr...
insideclimatenews.org/news/1407202...
July 15, 2025 at 3:51 PM
Two articles in @pnas.org by the @mannresearch.bsky.social over the past month demonstrate why *the truth is bad enough*. We don't have to exaggerate the climate crisis to justify urgent and immediate climate action.
apnews.com/article/extr...
insideclimatenews.org/news/1407202...
apnews.com/article/extr...
insideclimatenews.org/news/1407202...
Reposted by Mann Research Group
"Strongest Nor’easters Getting Stronger" | Great piece on our new study by Michele Berger for @upenn.edu #OmniaMagazine: omnia.sas.upenn.edu/story/strong...
Strongest Nor easters Getting Stronger
Research from Professor Michael Mann and PhD students Annabelle Horton and Mackenzie Weaver shows that as the worst of these East Coast winter storms intensify, so does their destructive potential—a f...
omnia.sas.upenn.edu
July 14, 2025 at 7:37 PM
"Strongest Nor’easters Getting Stronger" | Great piece on our new study by Michele Berger for @upenn.edu #OmniaMagazine: omnia.sas.upenn.edu/story/strong...
Reposted by Mann Research Group
Important postscript on our recent study: We can confirm now that the recent heat domes over North America & Europe were part of a resonant "wave 7" hemispheric pattern that emerged in mid June, persisting through most recent data [analysis by @xuekeli.bsky.social]
July 1, 2025 at 11:37 PM
Important postscript on our recent study: We can confirm now that the recent heat domes over North America & Europe were part of a resonant "wave 7" hemispheric pattern that emerged in mid June, persisting through most recent data [analysis by @xuekeli.bsky.social]
Reposted by Mann Research Group
Researchers work with the CLIMBER-2 carbon cycle model, which simulates oceanic, atmospheric, ice sheet, and biogeochemical processes, to explore the dynamics of climate transitions and shifts in carbon storage in the Plio-Pleistocene. In PNAS: www.pnas.org/doi/10.1073/...
June 12, 2025 at 7:22 PM
Researchers work with the CLIMBER-2 carbon cycle model, which simulates oceanic, atmospheric, ice sheet, and biogeochemical processes, to explore the dynamics of climate transitions and shifts in carbon storage in the Plio-Pleistocene. In PNAS: www.pnas.org/doi/10.1073/...
Reposted by Mann Research Group
"Atmospheric Warming & Planetary Wave Amplification" | I discuss our (@xuekeli.bsky.social et al) new article in @pnas.org demonstrating for the first time, an increase in incidence of the stuck & wavy jet stream patterns behind persistent summer weather extremes.
michaelmann.net/atmospheric-...
michaelmann.net/atmospheric-...
Atmospheric Warming and Planetary Wave Amplification | Michael E. Mann
Here’s the press tip from PNAS on our new article demonstrating an increase over the past 70+ years in the occurrence of quasi-resonant amplification (“QRA”) of […]
michaelmann.net
June 17, 2025 at 4:22 PM
"Atmospheric Warming & Planetary Wave Amplification" | I discuss our (@xuekeli.bsky.social et al) new article in @pnas.org demonstrating for the first time, an increase in incidence of the stuck & wavy jet stream patterns behind persistent summer weather extremes.
michaelmann.net/atmospheric-...
michaelmann.net/atmospheric-...
Reposted by Mann Research Group
Ours is the first study to demonstrate an historical increase (by a factor of three!) in the occurrence of atmospheric resonance, which is associated with many of the most devastating and deadly persistent summer weather extremes in recent years (e.g. Pacific Northwest Heat Dome of summer '21) 🧵
"Increased frequency of planetary wave resonance events over the past half-century" | Our new article in @pnas.org by @xuekeli.bsky.social, @michaelfwehner.bsky.social, Shannon Christiansen & yours truly: www.pnas.org/doi/10.1073/...
Increased frequency of planetary wave resonance events over the past half-century | PNAS
We demonstrate a tripling in the frequency of planetary wave resonance events over
the past halfcentury, coinciding with the rise in persistent bor...
www.pnas.org
June 16, 2025 at 8:33 PM
Ours is the first study to demonstrate an historical increase (by a factor of three!) in the occurrence of atmospheric resonance, which is associated with many of the most devastating and deadly persistent summer weather extremes in recent years (e.g. Pacific Northwest Heat Dome of summer '21) 🧵
Reposted by Mann Research Group
"Increased frequency of planetary wave resonance events over the past half-century" | Our new article in @pnas.org by @xuekeli.bsky.social, @michaelfwehner.bsky.social, Shannon Christiansen & yours truly: www.pnas.org/doi/10.1073/...
Increased frequency of planetary wave resonance events over the past half-century | PNAS
We demonstrate a tripling in the frequency of planetary wave resonance events over
the past halfcentury, coinciding with the rise in persistent bor...
www.pnas.org
June 16, 2025 at 8:05 PM
"Increased frequency of planetary wave resonance events over the past half-century" | Our new article in @pnas.org by @xuekeli.bsky.social, @michaelfwehner.bsky.social, Shannon Christiansen & yours truly: www.pnas.org/doi/10.1073/...
Reposted by Mann Research Group
Our (Carrillo et al) new article in #PNAS: "Sensitivity of simulations of Plio–Pleistocene climate with the CLIMBER-2 Earth System Model to details of the global carbon cycle"
www.pnas.org/doi/10.1073/...
🧵
www.pnas.org/doi/10.1073/...
🧵
Sensitivity of simulations of Plio–Pleistocene climate with the CLIMBER-2 Earth System Model to details of the global carbon cycle | PNAS
The Earth system model CLIMBER-2 has been used in past work to successfully reproduce
the glacial/interglacial cycles of the Plio–Pleistocene and t...
www.pnas.org
June 2, 2025 at 8:47 PM
Our (Carrillo et al) new article in #PNAS: "Sensitivity of simulations of Plio–Pleistocene climate with the CLIMBER-2 Earth System Model to details of the global carbon cycle"
www.pnas.org/doi/10.1073/...
🧵
www.pnas.org/doi/10.1073/...
🧵
🚨 New MRG Publication in @pnas.org: "Sensitivity of simulations of Plio–Pleistocene climate with the CLIMBER-2 Earth System Model to details of the global carbon cycle"
Read it here: www.pnas.org/doi/10.1073/...
@michaelemann.bsky.social | #pathdependence #carboncycle
Read it here: www.pnas.org/doi/10.1073/...
@michaelemann.bsky.social | #pathdependence #carboncycle
June 2, 2025 at 10:05 PM
🚨 New MRG Publication in @pnas.org: "Sensitivity of simulations of Plio–Pleistocene climate with the CLIMBER-2 Earth System Model to details of the global carbon cycle"
Read it here: www.pnas.org/doi/10.1073/...
@michaelemann.bsky.social | #pathdependence #carboncycle
Read it here: www.pnas.org/doi/10.1073/...
@michaelemann.bsky.social | #pathdependence #carboncycle
Reposted by Mann Research Group
"Multidecadal Temperature Variability in the Community Earth System Model Last Millennium Ensemble" | Our new article in @agu.org #GRL, led by Alejandro Fernandez (@a-fernandez.bsky.social): agupubs.onlinelibrary.wiley.com/doi/10.1029/...
May 31, 2025 at 2:49 PM
"Multidecadal Temperature Variability in the Community Earth System Model Last Millennium Ensemble" | Our new article in @agu.org #GRL, led by Alejandro Fernandez (@a-fernandez.bsky.social): agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Mann Research Group
PCSSM Post-doc @asinclair.bsky.social along w/ Dr. Emily Falk, @michaelemann.bsky.social & team have a brand new study in @pnas.org "Behavioral interventions motivate action to address climate change" with important implications for climate solutions messaging: www.pnas.org/doi/10.1073/...
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
www.pnas.org
May 13, 2025 at 5:36 PM
PCSSM Post-doc @asinclair.bsky.social along w/ Dr. Emily Falk, @michaelemann.bsky.social & team have a brand new study in @pnas.org "Behavioral interventions motivate action to address climate change" with important implications for climate solutions messaging: www.pnas.org/doi/10.1073/...
Want to see how well our forecast lines up with others?
Check it out here! And make sure to select 'Named Storms' under the Forecast Metric tab: seasonalhurricanepredictions.org/forecast/sea...
🌧️🌀 | @michaelemann.bsky.social | #Hurricane2025
Check it out here! And make sure to select 'Named Storms' under the Forecast Metric tab: seasonalhurricanepredictions.org/forecast/sea...
🌧️🌀 | @michaelemann.bsky.social | #Hurricane2025
Seasonal Predictions
seasonalhurricanepredictions.org
April 30, 2025 at 1:39 PM
Want to see how well our forecast lines up with others?
Check it out here! And make sure to select 'Named Storms' under the Forecast Metric tab: seasonalhurricanepredictions.org/forecast/sea...
🌧️🌀 | @michaelemann.bsky.social | #Hurricane2025
Check it out here! And make sure to select 'Named Storms' under the Forecast Metric tab: seasonalhurricanepredictions.org/forecast/sea...
🌧️🌀 | @michaelemann.bsky.social | #Hurricane2025
The 2025 Atlantic Hurricane Season: University of Pennsylvania Forecast is now live!
🧵 1/5 🌧️🌀 | @michaelemann.bsky.social
🧵 1/5 🌧️🌀 | @michaelemann.bsky.social
April 29, 2025 at 4:43 PM
The 2025 Atlantic Hurricane Season: University of Pennsylvania Forecast is now live!
🧵 1/5 🌧️🌀 | @michaelemann.bsky.social
🧵 1/5 🌧️🌀 | @michaelemann.bsky.social