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Posts by Hemant Khatri

Four polar stereographic maps showing Arctic near-surface air temperature anomalies for the month of March in 1986-1995, 1996-2005, 2006-2015, and 2016-2025. Most all areas are observing long-term warming, which is largest at the edges of the Arctic Ocean on the Atlantic and Pacific facing marginal seas.

Four polar stereographic maps showing Arctic near-surface air temperature anomalies for the month of March in 1986-1995, 1996-2005, 2006-2015, and 2016-2025. Most all areas are observing long-term warming, which is largest at the edges of the Arctic Ocean on the Atlantic and Pacific facing marginal seas.

Changes in March temperatures in the #Arctic by decade... (now updated through 2025 data)

Data from @copernicusecmwf.bsky.social ERA5 reanalysis.

3 weeks ago 69 26 1 0
3 weeks ago 0 0 0 0

It’s astounding and encouraging that the Met Office put out these long scientific explanations of how our world works. We need more science in the world like this. 👏

1 month ago 111 27 2 0

Ocean scienceseeting 2026 over. ✌️
Brain: 🧠🔥
Feet: 🦶😫

Already looking forward to OSM28.
#OSM26

1 month ago 0 0 0 0

Are you at ocean sciences meeting? Wanna hear about ocean memory and its role in climate variability?

Check out my talk at 11 am on 26th Feb in CC42B: Global Teleconnections session in Alsh-SEC.

Would love your take on ocean memory! Come by if you can make it.

#OSM26

@ricwilli.bsky.social

1 month ago 1 2 0 0

Are you at ocean sciences meeting? Wanna hear about ocean memory and its role in climate variability?

Check out my talk at 11 am on 26th Feb in CC42B: Global Teleconnections session in Alsh-SEC.

Would love your take on ocean memory! Come by if you can make it.

#OSM26

@ricwilli.bsky.social

1 month ago 1 2 0 0
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Great talk by Prof. Eleanor Frajka-Williamson @eleanorfrajka.bsky.social on the history of AMOC research! Fascinating to see how decades of observations have evolved our understanding of the Atlantic meridional overturning circulation and its role in our climate system.

#OSM26

1 month ago 9 1 0 0
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Historically, the U.S. has funded almost 50% of global ocean observation programs. However, amidst shifting geopolitics and rising global uncertainty, it remains to be seen whether other nations will step up to fill the funding gap.

#OSM26

1 month ago 5 1 0 0
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Got ocean science you’re excited about?Want to support 🌊community programs? Looking for editors and reviewers who care? @jgroceans.bsky.social

2 months ago 20 6 0 0
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Contrasting Fast and Slow Ocean Thermal, Carbon and Nutrient Responses to the North Atlantic Oscillation Ocean thermal, carbon and nutrient states respond to the North Atlantic Oscillation on fast and slow timescales, lasting up to a decade Thermal variability is driven by anomalous surface winds an...

Excited to share our new publication in GRL

We examine how a seasonal North Atlantic Oscillation affects the thermal and biogeochemical states in the North Atlantic Ocean for many years.

agupubs.onlinelibrary.wiley.com/doi/10.1029/...
@agu.org @ricliv.bsky.social

4 months ago 4 0 0 0
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COP30 overpromised, underdelivered, empowered distractions, backtracked on issues and once again gave big oil and big ag a free pass.

Unfortunately, the suspicions of climate scientists (here in Brazil and abroad) were confirmed again.

4 months ago 7200 1587 215 88

Science fraud is on the rise, facilitated by for-profit, open-access journals (Richardson et al, 2025, PNAS). These same journals are accelerating author and reviewer burnout by profiting from quantity while neglecting quality. Choose society journals where reputation and community are everything!

5 months ago 11 5 0 0
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For the first time, climate models show the 1.5°C goal is dead Governments have failed to limit global warming. What comes next?

New data modelling suggests that the world is on track to warm by 2°C and 3°C even if countries met every near-term climate pledge and hit their targets for net-zero CO₂ emissions

5 months ago 19 11 2 3
Green line graph time series of average sea surface temperature anomalies for each September from 1850 through 2025 for only the midlatitude region of the North Pacific Ocean. There is large interannual variability, but an overall long-term increasing trend. Anomalies are computed relative to a 1981-2010 baseline. 2025 is a record high.

Green line graph time series of average sea surface temperature anomalies for each September from 1850 through 2025 for only the midlatitude region of the North Pacific Ocean. There is large interannual variability, but an overall long-term increasing trend. Anomalies are computed relative to a 1981-2010 baseline. 2025 is a record high.

Record warm ocean temperatures continued in September across the North Pacific Ocean, with a number of consequential impacts (including on downstream weather patterns).

This graph shows the average for a band across the midlatitudes for every September from 1854-2025 using @noaa.gov ERSSTv5 data.

6 months ago 218 99 6 14
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Two stories juxtaposed on the BBC website... sigh.

Anyone else spot the irony here?

7 months ago 38 11 0 1
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Science research gets more engagement on Bluesky than X, study finds Bluesky posts referencing scholarly articles ‘find substantially higher levels of interaction’ than on Elon Musk’s platform

I guess I was right to switch to @bsky.app from Twitter.

www.theguardian.com/technology/2...

7 months ago 0 0 0 0
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Deadly Monsoon Rains Force Mass Evacuations in South Asia Heavy monsoon rains have triggered flash floods across Pakistan and India, forcing mass evacuations and causing deaths.

Heavy monsoon rains trigger flash floods across Pakistan and India, forcing mass evacuations and causing deaths.

7 months ago 20 8 0 1
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@metoffice.gov.uk ‘s 'State of the UK Climate' report is out today, with some key findings:

🌊UK sea level is rising faster than the global average
🌡️extremes are becoming the norm
🥇record breaking weather events are becoming more frequent
🔥the last 3 yrs have been in the UK's top 5 warmest on record

9 months ago 22 12 1 2

The Secretary of Commerce's new policy requiring his personal review of all NOAA contracts over $100,000 is directly harming American science. 🧪

How do I know? Because this morning, twelve of America's rising leaders in climate science (including myself) were furloughed.

9 months ago 171 84 4 3
Termination of OAR’s Climate Laboratories and Cooperative Institutes (-$102,292, -204 FTE/ -216 Positions) –NOAA will continue to support high priority ocean and weather research programs in NOS and NWS.

In coordination with the requested terminations for Weather Laboratories and Cooperative Institutes (see OAR-10) and Ocean Laboratories and Cooperative Institutes (see OAR-19), NOAA will close the Atlantic Oceanographic & Meteorological Laboratory (AOML) in Miami, FL; the Air Resources Laboratory (ARL) in College Park, MD, Idaho Falls, ID, and Oak Ridge, TN, as well as a nation-wide network of soil moisture sensors; the Chemical Sciences Laboratory (CSL) in Boulder, CO; the Geophysical Fluid Dynamics Laboratory (GFDL) in Princeton, NJ; the Global Monitoring Laboratory (GML) in Boulder, CO, Utqiaġvik, AK, Mauna Loa, HI, Hilo, HI, Big Island, HI, American Samoa, and the South Pole; the Pacific Marine Environmental Laboratory (PMEL) in Seattle, WA; and the Physical Sciences Laboratory (PSL) in Boulder, CO.

Termination of OAR’s Climate Laboratories and Cooperative Institutes (-$102,292, -204 FTE/ -216 Positions) –NOAA will continue to support high priority ocean and weather research programs in NOS and NWS. In coordination with the requested terminations for Weather Laboratories and Cooperative Institutes (see OAR-10) and Ocean Laboratories and Cooperative Institutes (see OAR-19), NOAA will close the Atlantic Oceanographic & Meteorological Laboratory (AOML) in Miami, FL; the Air Resources Laboratory (ARL) in College Park, MD, Idaho Falls, ID, and Oak Ridge, TN, as well as a nation-wide network of soil moisture sensors; the Chemical Sciences Laboratory (CSL) in Boulder, CO; the Geophysical Fluid Dynamics Laboratory (GFDL) in Princeton, NJ; the Global Monitoring Laboratory (GML) in Boulder, CO, Utqiaġvik, AK, Mauna Loa, HI, Hilo, HI, Big Island, HI, American Samoa, and the South Pole; the Pacific Marine Environmental Laboratory (PMEL) in Seattle, WA; and the Physical Sciences Laboratory (PSL) in Boulder, CO.

What a tragedy this is even being proposed on paper... 💔

NOAA FY2026 Congressional Justification: www.noaa.gov/sites/defaul...

9 months ago 365 154 28 32
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Excellent post by @dinahvp.bsky.social‬ on the plan to devastate NOAA research, with quotes from @franklinjamesl.bsky.social @wxmanms1.bsky.social. "Only a small fraction of NOAA Research would remain and be transferred to the NWS, including portions of the weather, tornado and technology research."

9 months ago 29 15 2 0
Screenshot from NSIDC that says: "Dear Colleague:

The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) learned yesterday that the Department of Defense (DoD) will stop processing and delivering the Special Sensor Microwave Imager/Sounder (SSMIS) data no later than 30 June 2025. The SSMIS data are used as input for the following NSIDC DAAC-produced data sets, which will therefore stop processing no later than 30 June 2025:"

Screenshot from NSIDC that says: "Dear Colleague: The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) learned yesterday that the Department of Defense (DoD) will stop processing and delivering the Special Sensor Microwave Imager/Sounder (SSMIS) data no later than 30 June 2025. The SSMIS data are used as input for the following NSIDC DAAC-produced data sets, which will therefore stop processing no later than 30 June 2025:"

Awful. More horrible science news

"The NASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) learned yesterday that the Department of Defense (DoD) will stop processing & delivering the Special Sensor Microwave Imager/Sounder (SSMIS) data no later than 30 June 2025."

9 months ago 740 396 22 65
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National Science Foundation Staff Booted From Headquarters - Eos Staff at the National Science Foundation (NSF) were notified on 25 June that the agency’s office space, located in Alexandria, Va., will be taken over by Department of Housing and Urban Development (H...

I know there’s a lot of news right now but this is really crazy. They’re booting the National Science Foundation out of its newish building with no plans for where 1800 people are going to go.

9 months ago 526 239 26 27

Great initiative by Bill Gates. The global economic uncertainty and wars are hitting poor countries the most. Hope this initiative would provide the required investment.

10 months ago 1 0 0 0

Excited to share new research in the Journal of Geophysical Research:Oceans with @andyhogg.bsky.social, @navidcy.bsky.social, Ryan Holmes, and @hemant-khatri.bsky.social on how the North Atlantic Oscillation impacts the basin's subtropical and subpolar gyres: doi.org/10.1029/2024... 🌊

10 months ago 9 5 0 0
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Trump Administration Halts Harvard’s Ability to Enroll International Students

Trump just revoked the ability for foreign students to enroll at Harvard. Every foreign student, which is in the thousands, enrolled for next year at Harvard will not be able to continue studying if this isn't challenged in court.

www.nytimes.com/2025/05/22/u...

10 months ago 1345 459 74 103
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Updated Climate Visuals

(1) Warming stripes for atmosphere and ocean
(2) Climate indicators (adding land humidity for 2024)
(3) UK climate indicators (adding some 2024 data)

ed-hawkins.github.io/climate-visu...

11 months ago 125 53 5 1
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Exclusive: NSF faces radical shake-up as officials abolish its 37 divisions Changes seen as a response to presidential directives on what research to fund

RIP American science: NSF faces radical shake-up as officials abolish its 37 divisions, layoff staff, and terminate more funded grants.

11 months ago 286 127 15 17
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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 companies, whi...

Interesting study showing economic losses due to emissions by individual fossil fuel companies.

Such studies aimed at quantifying economic losses and emissions by individual sectors, companies and countries are needed to determine accountability for global warming.

www.nature.com/articles/s41...

11 months ago 1 0 0 0
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White House Proposal Could Gut Climate Modeling the World Depends On Potential funding cuts for NOAA and its research partners threaten irreparable harm not only to climate research but to American safety, competitiveness, and national security.

"The possible elimination of the lab, called GFDL, in concert with potential cuts to other NOAA operations, threatens irreparable harm not only to global understanding of climate change and long-range scenarios for the planet but to the country’s safety, competitiveness and national security."

11 months ago 257 101 5 15
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