Manny Hernandez
@vientomonzon.bsky.social
Climate Scientist, Geographer, Catastrophe Modeler. Working with all things Nat Cat at Liberty Mutual. Opinions are my own. 🇲🇽🏳️🌈
Reposted by Manny Hernandez
Undergraduate opportunity! 📣 The NSF SOARS program is open for applications! SOARS is an undergrad-grad bridge program focusing on promoting and supporting research, mentoring, and community.
Learn more about eligibility and the app process:
ucar.wd5.myworkdayjobs.com/en-US/UCAR_C...
Learn more about eligibility and the app process:
ucar.wd5.myworkdayjobs.com/en-US/UCAR_C...
2026 NSF SOARS® First-Year Protege
Job Description Summary: UCAR is excited to announce the application opening of the U.S. National Science Foundation (NSF) Significant Opportunities in Atmospheric Research and Science (SOARS) program...
ucar.wd5.myworkdayjobs.com
November 3, 2025 at 8:57 PM
Undergraduate opportunity! 📣 The NSF SOARS program is open for applications! SOARS is an undergrad-grad bridge program focusing on promoting and supporting research, mentoring, and community.
Learn more about eligibility and the app process:
ucar.wd5.myworkdayjobs.com/en-US/UCAR_C...
Learn more about eligibility and the app process:
ucar.wd5.myworkdayjobs.com/en-US/UCAR_C...
Reposted by Manny Hernandez
Inspired by Brian's chart, I investigated how much time North Atlantic named storms spent at hurricane and at major hurricane strength during 1966-2025.
Blue = proportion for "hurricane time" (category 1-5).
Orange = proportion for "major hurricane time" (category 3-5).
More details in alt text!
Blue = proportion for "hurricane time" (category 1-5).
Orange = proportion for "major hurricane time" (category 3-5).
More details in alt text!
October 30, 2025 at 4:31 PM
Inspired by Brian's chart, I investigated how much time North Atlantic named storms spent at hurricane and at major hurricane strength during 1966-2025.
Blue = proportion for "hurricane time" (category 1-5).
Orange = proportion for "major hurricane time" (category 3-5).
More details in alt text!
Blue = proportion for "hurricane time" (category 1-5).
Orange = proportion for "major hurricane time" (category 3-5).
More details in alt text!
Reposted by Manny Hernandez
🚨 Important paper in Nature: "Systematic attribution of heatwaves to the emissions of carbon majors".
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Systematic attribution of heatwaves to the emissions of carbon majors - Nature
Climate change made 213 historical heatwaves reported over 2000–2023 more likely and more intense, to which each of the 180 carbon majors (fossil fuel and cement producers) substantially contributed.
www.nature.com
September 10, 2025 at 5:41 PM
🚨 Important paper in Nature: "Systematic attribution of heatwaves to the emissions of carbon majors".
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Manny Hernandez
🚨📈 Over the last 6 months a series of papers has advanced our understanding of the culpability of fossil fuel firms for climate change impacts. In April, @jsmankin.bsky.social and I showed that economic damages from rising extreme heat can be linked to companies like Exxon and Chevron. rdcu.be/ei0T5
Carbon majors and the scientific case for climate liability
Nature - A transparent and reproducible scientific framework is introduced to formalize how trillions in economic losses are attributable to the extreme heat caused by emissions from fossil fuel...
rdcu.be
September 10, 2025 at 9:16 PM
🚨📈 Over the last 6 months a series of papers has advanced our understanding of the culpability of fossil fuel firms for climate change impacts. In April, @jsmankin.bsky.social and I showed that economic damages from rising extreme heat can be linked to companies like Exxon and Chevron. rdcu.be/ei0T5
Reposted by Manny Hernandez
Temperature data has to occasionally be corrected for measurement biases. This process is guided by the best available science. But, if you insist on using the raw data, guess what? "Raw temperatures actually show more warming"
open.substack.com/pub/theclima...
open.substack.com/pub/theclima...
The raw temperature deal
Temperature records are adjusted for changes in measurement techniques over time, but the net effect on global temperatures is small
open.substack.com
September 8, 2025 at 4:39 PM
Temperature data has to occasionally be corrected for measurement biases. This process is guided by the best available science. But, if you insist on using the raw data, guess what? "Raw temperatures actually show more warming"
open.substack.com/pub/theclima...
open.substack.com/pub/theclima...
Reposted by Manny Hernandez
The US is building a record amount of electricity generation capacity in 2025 to meet rapidly growing demand. And its overwhelmingly clean energy, with a bit of gas. Meanwhile the Trump administration wants to stop permitting of new solar and wind projects.
August 21, 2025 at 3:22 PM
The US is building a record amount of electricity generation capacity in 2025 to meet rapidly growing demand. And its overwhelmingly clean energy, with a bit of gas. Meanwhile the Trump administration wants to stop permitting of new solar and wind projects.
Reposted by Manny Hernandez
This is devastating, and part of a larger move to entirely push science out of NASA's mission. It is horrific betrayal of so much work, not to mention the fact that it violates NASA's charter.
NASA’s acting chief calls for the end of Earth science at the space agency arstechnica.com/space/2025/0...
NASA’s acting chief calls for the end of Earth science at the space agency
NASA’s charter clearly states the agency should study planet Earth, however.
arstechnica.com
August 15, 2025 at 9:29 PM
This is devastating, and part of a larger move to entirely push science out of NASA's mission. It is horrific betrayal of so much work, not to mention the fact that it violates NASA's charter.
Reposted by Manny Hernandez
The recent DOE climate science report misrepresents the work of many researchers. Carbon Brief asked those cited to review the parts of the report where their work was used, and we collectively found 100+ misleading or false statements: interactive.carbonbr...
August 14, 2025 at 4:40 PM
The recent DOE climate science report misrepresents the work of many researchers. Carbon Brief asked those cited to review the parts of the report where their work was used, and we collectively found 100+ misleading or false statements: interactive.carbonbr...
Reposted by Manny Hernandez
Now that it's August, let's see where July ended up this year! SSTs were above 26°C across much of the Atlantic, though not all regions were anomalously warm.
A z-score reveals how many standard deviations the value is from the mean. Both anomalies & z-scores are computed from the 1991-2020 period.
A z-score reveals how many standard deviations the value is from the mean. Both anomalies & z-scores are computed from the 1991-2020 period.
August 8, 2025 at 9:46 PM
Now that it's August, let's see where July ended up this year! SSTs were above 26°C across much of the Atlantic, though not all regions were anomalously warm.
A z-score reveals how many standard deviations the value is from the mean. Both anomalies & z-scores are computed from the 1991-2020 period.
A z-score reveals how many standard deviations the value is from the mean. Both anomalies & z-scores are computed from the 1991-2020 period.
Reposted by Manny Hernandez
On The Climate Brink, Zeke Hausfather explains how the recent DOE climate report, written by climate contrarians, misrepresents his work.
www.theclimatebrink....
www.theclimatebrink....
How the DOE and EPA used and misused my research
Elevating contrarian views while burying the actual science
www.theclimatebrink.com
August 3, 2025 at 12:53 AM
On The Climate Brink, Zeke Hausfather explains how the recent DOE climate report, written by climate contrarians, misrepresents his work.
www.theclimatebrink....
www.theclimatebrink....
Reposted by Manny Hernandez
Some people are mis-using IPCC Table 12.12 to falsely claim that the latest IPCC assessment is that most types of extreme weather have not increased. Thread to explain why they're wrong.
November 1, 2024 at 9:50 AM
Some people are mis-using IPCC Table 12.12 to falsely claim that the latest IPCC assessment is that most types of extreme weather have not increased. Thread to explain why they're wrong.
Reposted by Manny Hernandez
“Wildfires driven by climate change contribute to as many as thousands of annual deaths and billions of dollars in economic costs from wildfire smoke in the United States, according to a new study.”
Smoke from climate-fueled wildfires contributed to thousands of US deaths over 15 years, study says
A new study out in the journal Nature Communications Earth & Environment finds that wildfires fueled by climate change are linked to as many as thousands of annual deaths and billions of dollars i...
apnews.com
August 4, 2025 at 9:26 PM
“Wildfires driven by climate change contribute to as many as thousands of annual deaths and billions of dollars in economic costs from wildfire smoke in the United States, according to a new study.”
Reposted by Manny Hernandez
AI in the DOE report? This ref (p29) is fake:
Lee, S., Byrne, M. P., Loikith, P. C., & O’Dell, C. W. (2024). Zonal contrasts of the tropical Pacific climate predicted by a global constraint. Climate Dynamics, 62(1–2), 229–246. doi:10.1007/s00382-023-06741-7
www.realclimate.org/index.php/ar...
Lee, S., Byrne, M. P., Loikith, P. C., & O’Dell, C. W. (2024). Zonal contrasts of the tropical Pacific climate predicted by a global constraint. Climate Dynamics, 62(1–2), 229–246. doi:10.1007/s00382-023-06741-7
www.realclimate.org/index.php/ar...
RealClimate: The Endangerment of the Endangerment Finding?
RealClimate: The EPA, along with the "Climate Working Group" (CWG) of usual suspects (plus Judith Curry and Ross McKitrick) at DOE, have just put out a document for public comment their attempt to res...
www.realclimate.org
August 1, 2025 at 7:07 PM
AI in the DOE report? This ref (p29) is fake:
Lee, S., Byrne, M. P., Loikith, P. C., & O’Dell, C. W. (2024). Zonal contrasts of the tropical Pacific climate predicted by a global constraint. Climate Dynamics, 62(1–2), 229–246. doi:10.1007/s00382-023-06741-7
www.realclimate.org/index.php/ar...
Lee, S., Byrne, M. P., Loikith, P. C., & O’Dell, C. W. (2024). Zonal contrasts of the tropical Pacific climate predicted by a global constraint. Climate Dynamics, 62(1–2), 229–246. doi:10.1007/s00382-023-06741-7
www.realclimate.org/index.php/ar...
Reposted by Manny Hernandez
This is like firing all the carpenters because you’ve got a shiny new hammer. It’s a tool. And one that currently is as likely to bonk you in the head vs. hit the nail.
"In mid-2024, a study of 2,500 workers found that 77 percent reported decreased productivity and even higher workloads when using AI. Just under 40 percent of workers reported increased workloads caused explicitly by AI's sloppy mistakes."
Nvidia CEO Says He Has Plans to Either Change or Eliminate Every Single Person's Job With AI
Wall Street was bristling earlier this month as Nvidia, the "chip" monopoly behind the AI boom, hit a record market value of $3.92 trillion, just eclipsing Apple's record of $3.915 trillion set last D...
finance.yahoo.com
July 22, 2025 at 9:43 PM
This is like firing all the carpenters because you’ve got a shiny new hammer. It’s a tool. And one that currently is as likely to bonk you in the head vs. hit the nail.
Reposted by Manny Hernandez
The Senate Approps Committee approved the "CJS" budget bill yesterday that would provide funding for NOAA, NASA and NSF. I did a semi-deep dive this morning, and talked about how the administration seems to be saying "whatever" to Congress re: the budget. More here:
substack.com/@balancedwea...
substack.com/@balancedwea...
Senate budget bill clear rebuke to administration plans to gut science
Meanwhile, OPM head says "whatever"
substack.com
July 18, 2025 at 3:58 PM
The Senate Approps Committee approved the "CJS" budget bill yesterday that would provide funding for NOAA, NASA and NSF. I did a semi-deep dive this morning, and talked about how the administration seems to be saying "whatever" to Congress re: the budget. More here:
substack.com/@balancedwea...
substack.com/@balancedwea...
Reposted by Manny Hernandez
The North American Monsoon (NAM) has been inconsistent this summer over N AZ: on-again, off-again, but mostly off. Nonetheless, I did get a chance to shoot some lightning in Sedona, AZ, the other day.
#azwx #weather #lightning
#azwx #weather #lightning
July 18, 2025 at 6:05 PM
The North American Monsoon (NAM) has been inconsistent this summer over N AZ: on-again, off-again, but mostly off. Nonetheless, I did get a chance to shoot some lightning in Sedona, AZ, the other day.
#azwx #weather #lightning
#azwx #weather #lightning
Reposted by Manny Hernandez
Really like this combination of rainfall info and hydrologic context (geology, wildfire burn scars, impervious surface) ⚒️🧪
🎁 There’s a Flash Flood Season, and This Is It www.nytimes.com/interactive/...
🎁 There’s a Flash Flood Season, and This Is It www.nytimes.com/interactive/...
Here's Why There's So Much Flash Flooding in the U.S. Right Now (Gift Article)
July’s hot temperatures and moist air are the perfect ingredients for rain.
www.nytimes.com
July 17, 2025 at 6:17 PM
Really like this combination of rainfall info and hydrologic context (geology, wildfire burn scars, impervious surface) ⚒️🧪
🎁 There’s a Flash Flood Season, and This Is It www.nytimes.com/interactive/...
🎁 There’s a Flash Flood Season, and This Is It www.nytimes.com/interactive/...
Reposted by Manny Hernandez
To illustrate just how much of the United States is uninsured against flood risk, take note of this statistic:
Just 25 counties (nearly all of them coastal) account for 50% (!!!) of all active NFIP policies.
Just 25 counties (nearly all of them coastal) account for 50% (!!!) of all active NFIP policies.
July 17, 2025 at 9:14 PM
To illustrate just how much of the United States is uninsured against flood risk, take note of this statistic:
Just 25 counties (nearly all of them coastal) account for 50% (!!!) of all active NFIP policies.
Just 25 counties (nearly all of them coastal) account for 50% (!!!) of all active NFIP policies.
Reposted by Manny Hernandez
for those who missed the CLIVAR climate risk webinar, it's now online. great talks by @kellyhereid.bsky.social, @climatefran.bsky.social, and Zong-Liang Yang.
youtu.be/sktn8mu98UQ?...
youtu.be/sktn8mu98UQ?...
Usable Climate Risk Science: Webinar One
YouTube video by US CLIVAR
youtu.be
July 17, 2025 at 6:45 PM
for those who missed the CLIVAR climate risk webinar, it's now online. great talks by @kellyhereid.bsky.social, @climatefran.bsky.social, and Zong-Liang Yang.
youtu.be/sktn8mu98UQ?...
youtu.be/sktn8mu98UQ?...
I guess now we know why they were targeting islands occupied by only penguins…
In places like Antarctica, small things can make a difference. Scientists are finding that penguin waste is helping form clouds, which could be offsetting the effects of climate change.
Penguins in Antarctica could actually be helping cool the climate… with their poop
In places like Antarctica, small things can make a difference. Scientists are finding that penguin waste is helping form clouds, which could be offsetting the effects of climate change.
n.pr
June 9, 2025 at 1:39 AM
I guess now we know why they were targeting islands occupied by only penguins…
Reposted by Manny Hernandez
Repealing the inflation reduction act clean energy policies will make your electricity bills higher, while climate change makes your neighborhood hotter.
Americans can expect to pay more to stay cool this summer thanks to forecasts for above-average temperatures across the country and higher natural-gas prices
Americans’ Electric Bills Are Headed Higher With the Temperatures
Forecasts for a hotter-than-normal summer and more expensive natural gas mean pricier power.
buff.ly
June 8, 2025 at 11:32 PM
Repealing the inflation reduction act clean energy policies will make your electricity bills higher, while climate change makes your neighborhood hotter.
Reposted by Manny Hernandez
Looks like we finally have an explanation for why the Atlantic (and, by extension, the Earth) was so warm of 2023. From Matt England et al.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Drivers of the extreme North Atlantic marine heatwave during 2023 - Nature
Atmospheric reanalyses combined with ocean observations and model simulations show that the extreme 2023 North Atlantic heatwave was primarily driven by anomalously weak winds leading to strongly shoa...
www.nature.com
June 4, 2025 at 6:55 PM
Looks like we finally have an explanation for why the Atlantic (and, by extension, the Earth) was so warm of 2023. From Matt England et al.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Manny Hernandez
Still more climate and catastrophe research positions in insurance:
May 28, 2025 at 6:27 PM
Still more climate and catastrophe research positions in insurance:
Reposted by Manny Hernandez
Federal weather & climate science is under threat. Starting TODAY at 3:00 PM ET, join a coalition of scientists--including AMS leaders--for a 100-hour livestream. Learn what federal science does for you, ask questions, and help build awareness to "Save Our Forecasts": wclivestream.com
May 28, 2025 at 12:58 PM
Federal weather & climate science is under threat. Starting TODAY at 3:00 PM ET, join a coalition of scientists--including AMS leaders--for a 100-hour livestream. Learn what federal science does for you, ask questions, and help build awareness to "Save Our Forecasts": wclivestream.com
Reposted by Manny Hernandez
📺STARTING SOON on @wclivestream.bsky.social's 💯-hour Weather & Climate Livestream:
📣 Join our own Bernadette Woods Placky at 7:15pm ET for a discussion about why (& how!) “Communication is a solution” to climate change.
🎥 Watch LIVE ▶️ www.youtube.com/watch?v=CcWR...
📣 Join our own Bernadette Woods Placky at 7:15pm ET for a discussion about why (& how!) “Communication is a solution” to climate change.
🎥 Watch LIVE ▶️ www.youtube.com/watch?v=CcWR...
Live from NASA GISS, kicking-off the Weather and Climate 100-hour livestream
YouTube video by The Weather & Climate Livestream
www.youtube.com
May 28, 2025 at 11:00 PM
📺STARTING SOON on @wclivestream.bsky.social's 💯-hour Weather & Climate Livestream:
📣 Join our own Bernadette Woods Placky at 7:15pm ET for a discussion about why (& how!) “Communication is a solution” to climate change.
🎥 Watch LIVE ▶️ www.youtube.com/watch?v=CcWR...
📣 Join our own Bernadette Woods Placky at 7:15pm ET for a discussion about why (& how!) “Communication is a solution” to climate change.
🎥 Watch LIVE ▶️ www.youtube.com/watch?v=CcWR...