Anoop S. Mahajan | Lightnews

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Jul 4

India has conducted research in the Southern Ocean for two decades now, thanks to NCPOR and MOES India. This year, we went down there again. Check out this article by Sahana Gosh in Nature India talking about some highlights.
www.nature.com/articles/d44...

India’s Antarctic quest makes valuable contributions to global research

Shrinking ice unlocks research opportunities, and new risks, as scientists study carbon removal, biodiversity shifts and cloud formation in the Southern Ocean

www.nature.com

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Jun 7

Some coverage on our recent article on climatic changes in seawater DMS concentrations and emissions to the atmosphere.

openthemagazine.com/feature/how-...

How a Marine Molecule Could Cool the Planet - Open The Magazine

The ocean’s chemistry is subtly shifting in response to a warming planet. One of the clearest signals comes in the form of dimethyl sulphide (DMS), a compound released by phytoplankton into the atmosp...

openthemagazine.com

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Jun 3

This suggests that DMS will play an increasingly important role as a sulfur source as further air quality measures reduce anthropogenic emissions of sulfur compounds. It will offset some of the global warming.

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Jun 3

We used an ML algorithm to solve this. It increases our confidence in predicting future changes in DMS emissions and addresses the current uncertainty in climate-DMS feedback impacts in the IPCC AR6. We show that seawater DMS will decrease, but the sea-air emissions will increase.

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Jun 3

Dimethyl sulfide is an important gas that is emitted from the oceans to the atmosphere. It is a major source of cloud condensation nuclei and helps cool the planet. But current models have a problem. They do not agree whether it will increase or decrease with climate change.

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Jun 3

Check out our latest work led by my PhD student Sankirna Joge: Climate warming increases global oceanic dimethyl sulfide emissions.
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

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Apr 7

Thankfully, we had an excellent team that worked hard to gather data on several oceanic, atmospheric, and sediment biogeochemistry parameters and made the experience enjoyable. Thank you to the MOES and NCPOR for ensuring that India continues to do cutting-edge research in the Southern Ocean.

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Apr 7

I spent the last two months at sea as a part of the 12th Indian Scientific Expedition to the Southern Ocean. It was an honour to act as the Chief Scientist and lead this expedition, which was challenging but a great learning experience.

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Feb 8

The 12th Indian Scientific Expedition to the Southern Ocean team reached Mauritius. Today we'll check our home for the next two months.
I'll be posting some updates on the expedition but here's a video by Rakesh Rao on behalf of NCPOR from one of our earlier trips
youtu.be/IfcXX4msZDQ?...

Into the Southern Ocean

YouTube video by NCPOR, Goa Vasco

youtu.be

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Feb 7

After a break in January, CATCH is back. Back again.

CATCH Science @catchscience.bsky.social · Feb 5

📣 Please mark the date and time for the next CATCH seminar given by Alli Moon (University of Washington) on February 2025 (Wednesday) at 18:00 UTC / 10:00 PST. Zoom link will follow here: www.catchscience.org/seminar-series #CATCHscience

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Feb 5

Doesn't this question the open access model? If APCs run journals, there is incentive to publish more. Quality suffers.

CATCH Science @catchscience.bsky.social · Feb 5

📣 Please mark the date and time for the next CATCH seminar given by Alli Moon (University of Washington) on February 2025 (Wednesday) at 18:00 UTC / 10:00 PST. Zoom link will follow here: www.catchscience.org/seminar-series #CATCHscience

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Feb 1

We did a study on mercury cycling in the stratosphere, which has now been covered in this easy-to-understand article by Sahana Ghosh in @nature.com India. The atmospheric chemistry of mercury is super interesting! www.nature.com/articles/d44...

Mercury pollution driven by stratospheric forces

Heavy metal movement to worsen under increased climate change

www.nature.com

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Jan 9

Check out our latest paper in Science Advances which shows that almost half of the deposited mercury is chemically processed in the stratosphere. This has major implications for the Minamata Convention.
www.science.org/doi/10.1126/...

Role of the stratosphere in the global mercury cycle

The stratosphere facilitates the processing and global dispersion of mercury from polluted source regions to remote environments.

www.science.org

Australian Antarctic Program Partnership @antarctic.bsky.social · Jan 5

TikTok and #Antarctic tourism
www.abc.net.au/news/2025-01...

The TikTok effect on Antarctica

Follow the latest news headlines from Australia's most trusted source. Read in-depth expert analysis and watch live coverage on ABC News.

www.abc.net.au

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Dec 26

We have got back reviews for your paper. We think you can answer the specific comments but we still plan to reject your paper. Happy holidays.
Between predatory journals and journals which are 'magazines', innovative science suffers.

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Dec 23

What exactly are aerosols made of? Check out our latest paper on observations of aerosol composition at a high-altitude site in India. This paper throws light on the different chemicals in aerosols which affect aerosol CCN activation.
www.sciencedirect.com/science/arti...

Aerosol volatility over a high-altitude site in India: Effect of semi-volatile organics

Sub-micron aerosols primarily comprise of organics, sulfate, nitrate, ammonium, and chloride. Of these, organics have high complexity in their chemica…

www.sciencedirect.com

Brent Toderian @brenttoderian.bsky.social · Dec 18

“It's amazing how pollution has dropped in #Paris in 15 years. @annehidalgo.bsky.social has filled the city with bike-lanes & not only has she reduced pollution by 40% but she’s also been re-elected.”

Trading car space for green space, bike space, kid space…trading pollution for people. Good trade.

Alejandro Cencerrado 7291 @alexbici.bsky.social · Dec 18

Es alucinante cómo ha bajado la contaminación en París en 15 años. Anne Hidalgo lo ha llenado todo de carriles bici y no sólo ha reducido la contaminación en un 40%, sino que ha sido reelegida.

Southern Ocean Observing System (SOOS) @soosocean.bsky.social · Dec 18

And there is more leadership news...

➡️Alessandro Silvano & Xianwei Wang join 𝗔𝗕𝗦 𝗥𝗪𝗚 𝗹𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽: soos.aq/news/new-abs...

➡️ @noopanoop.bsky.social in a new leadership role for 𝗦𝗢𝗜𝗦 𝗥𝗪𝗚: soos.aq/news/new-soi...

➡️Hugo Guímaro as new APECS ECR rep on the CAPS CWG: soos.aq/news/new-cap...

Brent Toderian @brenttoderian.bsky.social · Dec 9

Paris definitely wasn’t always this way. This is very recent. It wasn’t magic. It just took vision and leadership. Your city could choose leadership too.

Great pic via @JBPssx

Long line up of people on bikes waiting for the light to change on a Paris street, in a separated bike-lane.

CATCH Science @catchscience.bsky.social · Dec 5

📣 Upcoming CATCH seminar by Ursula Jongebloed (University of Washington, USA) on January 15th, 2025 at 8 PST (17 CET) on "Sulfate sources and chemistry from the pre-industrial to present day inferred from ice core observations and global model simulations". Zoom link on our website! #CATCHscience

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Nov 30

I have founded and have been hosting Pune Science on Tap, which now has its 35th edition this week. If you are in Pune on the 5th, please drop by. #scienceoutreach

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Nov 28

Our latest paper gives the first estimation of the effect of methanethiol on the global radiative budget. Ocean sulphur is not all about DMS!
Check out this super exciting paper, which changes our understanding on the effect of oceanic sulphur.
www.science.org/doi/10.1126/...

Marine emissions of methanethiol increase aerosol cooling in the Southern Ocean

Methanethiol is a significant contributor to global ocean sulfur emissions and to sulfate aerosol cooling over the Southern Ocean.

www.science.org

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Nov 26

The SOLAS #OSC2024 is finally over. It was a wonderful few days of talking about science, learning new things, planning the future, and having a lot of fun.

Dr. Anoop Sharad Mahajan @noopanoop.bsky.social · Nov 22

An S.O.S. From the Poles to World Leaders at COP29 - this statement will be released today on behalf of scientists who work on the polar regions. www.youtube.com/live/ku8sQ3B...

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