Sign in

Aditya Sengupta

@adisen99.bsky.social
359 followers 378 following 17 posts

Graduate Researcher @UniversityofMelbourne studying climate variability, climate and weather extremes and climate dynamics. 🧪 🔭

PostsRepliesMedia
Reposted by Aditya Sengupta
Andrew King (he/him) @andrewkingclimate.bsky.social · 28/09/2026
With @sclark.bsky.social @adisen99.bsky.social Pardeep Pall @meinshausen.bsky.social Ruchit Kulkarni and Boying Lyu @21stcenturyweather.bsky.social @unimelb.edu.au
031
Reposted by Aditya Sengupta
Zack Labe @zacklabe.com · 23/09/2026
Wednesday El Niño update - Unsurprisingly, sea surface temperatures still remain record warm across the central Pacific. But when discussing headlines like the “strongest” El Niño, it’s an oversimplification to ignore the role of long-term tropical warming (from climate change). Data: OISSTv2.1 🌊
Line graph time series of daily sea surface temperature anomalies in the Nino3.4 region. Years are shown from 1982 to 2025 in shades of blue to light yellow, and 2026 is shown in red. Climatologically, the largest anomalies are during the boreal winter in terms of magnitude. Data is from OISSTv2.1. Map of September 21, 2026 average sea surface temperature anomalies in the ENSO monitoring regions. Data is from NOAA OISSTv2.1 with anomalies relative to a 1991-2020 baseline.Graphic showing the 4-week change in sea surface temperature anomalies across the tropical eastern Pacific Ocean from August 22, 2026 to September 21, 2026. Data is from NOAA OISSTv2.1
111044
Aditya Sengupta @adisen99.bsky.social · 01/09/2026
🌊 An exceptional El Niño is forecast to peak in late 2026. New preprint with @andrewkingclimate.bsky.social and @climatefreund.bsky.social: how unusual would it be, and how much has climate change contributed? Currently under review, and comments/feedback are welcome: doi.org/10.31223/X54...
doi.org
Climate change has intensified exceptional El Niño events like the 2026/27 forecast
052
Aditya Sengupta @adisen99.bsky.social · 17/07/2026
In our new preprint, members of 'Fresh Eyes on CMIP' led by @flossie-brown.bsky.social and @sabinebischof.bsky.social synthesise key systematic biases across the Earth System in @wcrp-cmip.org CMIP models across different generations. egusphere.copernicus.org/preprints/20...
egusphere.copernicus.org
Fresh Eyes on CMIP Model Biases: Diagnosing Biases Across CMIP Generations and Implications for CMIP7
Abstract. The Coupled Model Intercomparison Project (CMIP) simulates standardized experiments spanning historical, future, and hypothetical conditions, to better understand the Earth system's evolutio...
052
Reposted by Aditya Sengupta
Yuxin Wang (she/her) @yuxinwang.bsky.social · 25/04/2026
Yes that’s us! Check our latest ENSO forecast here 👉 uhslc.soest.hawaii.edu/research/ENS...
uhslc.soest.hawaii.edu
ENSO Forecast: Wyrtki-CSLIM
1145
Aditya Sengupta @adisen99.bsky.social · 01/03/2026
New analysis by @ember-energy.org showcases the transition from fossil fuel to clean energy being fast tracked in India compared to China and the Global North. This transition in the developing world will play a big role in determining our GHG emissions pathway in the 21st century.
Source: IEA, IIASA, Ember analysis • This is a ternary chart showing the relative contribution of three aggregated energy carriers – fossil, bio & other, and electrons – that sum to total final energy. 'Bio & other' refers to biomass and other energy such as heat.
141
Reposted by Aditya Sengupta
Andrew B. Watkins @windjunky.bsky.social · 09/02/2026
La Nina + neg IOD = cold Australia, right? Not anymore. Just released: "2025 was Australia's 4th warmest year since national temperature records began in 1910. For Australia as a whole, the national annual average temperature was 1.23 °C above the 1961–1990 average" www.bom.gov.au/climate/curr...
1127
Reposted by Aditya Sengupta
Richard Allan @rpallanuk.bsky.social · 03/02/2026
2 new papers by Cooper, Armour & co use past climates, from the Last Glacial Maximum 21,000 yrs ago & the Pliocene 2.6-5.3 million yrs ago, to infer that the planet will warm about 3 degrees C for a doubling of CO2 as a best estimate for present day. doi.org/10.1126/scia... doi.org/10.1073/pnas...
doi.org
Last Glacial Maximum pattern effects reduce climate sensitivity estimates
Ice sheet–driven temperature patterns amplified glacial cooling, implying less future warming than previously estimated.
13112
Reposted by Aditya Sengupta
Daniel Huppmann @danielhuppmann.bsky.social · 03/02/2026
One advantage of transferring the legacy SSP web database to the new #ScenarioServices infrastructure... You can can now query SSP scenarios directly via the #python package #pyam_iamc 🎉 Check out the tutorial at ssp.apps.ece.iiasa.ac.at/documentatio... github.com/iamconsortiu...
github.com
GitHub - IAMconsortium/pyam: Analysis & visualization of energy & climate scenarios
Analysis & visualization of energy & climate scenarios - IAMconsortium/pyam
072
Aditya Sengupta @adisen99.bsky.social · 21/11/2025
With ongoing climate negotiations at COP30 in Brazil, here is a brief primer written by @andrewkingclimate.bsky.social and I on the strides we have made to improve our understanding of Earth's climate and its changes. Now we need ambitious climate policies!!! theconversation.com/what-do-we-k...
theconversation.com
What do we know about climate change? How do we know it? And where are we headed?
Cimate scientists are more certain than ever that humans are changing the climate – but there are signs of hope on the horizon.
050
Reposted by Aditya Sengupta
Andrew King (he/him) @andrewkingclimate.bsky.social · 20/11/2025
In this article @adisen99.bsky.social and I take stock of where the Earth's climate is at and where we're heading. Climate action has never been more critical #COP30 theconversation.com/what-do-we-k...
theconversation.com
What do we know about climate change? How do we know it? And where are we headed?
Cimate scientists are more certain than ever that humans are changing the climate – but there are signs of hope on the horizon.
082
Reposted by Aditya Sengupta
Kim Reid @drkimclimate.bsky.social · 02/09/2025
It was a pleasure to be involved in this. Not a pleasure that it was necessary, but seeing around 80 scientists come together to defend scientific integrity, led brilliantly by Andrew, filled me with pride.
092
Aditya Sengupta @adisen99.bsky.social · 07/06/2025
📑 The first IPCC Assessment report came out in 1990. Prior to 1990, most parts of the world had already seen an increase in regional temperatures. Post 1990, regions with a high Human Development Index have seen the rate of warming increase. agupubs.onlinelibrary.wiley.com/doi/full/10....
The actual temperature change in different regions compared to a counterfactual world if the 1960–1990 warming trend had continued. It is clear that regions with a low HDI have warmed pretty much at the same rate post 1990. An increase in pollution levels in these regions while a decrease in pollution in high HDI regions, owing to the imposition of clean air acts, can explain some of these regional differences
030
Aditya Sengupta @adisen99.bsky.social · 03/06/2025
www.economist.com/interactive/... This very insightful recent article in Economist tackles the topic of the delicate balance in aerosol pollution and GHG induced warming, and this balance is critical in developing regions in South Asia.
economist.com
If India chokes less, it will fry more
Pollution may have shielded it from the worst of global warming. That will change
041
Reposted by Aditya Sengupta
Kim Reid @drkimclimate.bsky.social · 22/05/2025
After the March 2021 floods, which had a similar pattern of unrelenting moist air over the east coast and a cut-off low, we quantified how likely these events may be in the future.
111
Reposted by Aditya Sengupta
Neelima Vallangi @neelima.bsky.social · 11/04/2025
Wrote a short piece for Indian readers who often think reducing air pollution will reduce climate impacts, also featuring @adisen99.bsky.social's paper. Many were shocked, and it started conversations on why India is surprisingly cool with ~0.7 °C of total warming! www.thehindu.com/sci-tech/ene...
thehindu.com
India’s vital efforts to tackle air pollution could worsen warming
Study warns rapid reduction of aerosol emissions without greenhouse gas reduction could expose vulnerable populations to extreme heat.
32814
Reposted by Aditya Sengupta
hydroholgate.bsky.social @hydroholgate.bsky.social · 01/04/2025
Have you wondered what causes Australia's droughts? Why sometimes the expected rainfall just doesn't come? Our newly published review explains! Read the full article here: rdcu.be/eeZHX
rdcu.be
Physical mechanisms of meteorological drought development, intensification and termination: an Australian review
Communications Earth & Environment - Australia experiences meteorological droughts due to insufficient moisture transport and heavy precipitation, which are influenced by climate variability...
031
Reposted by Aditya Sengupta
Andrew B. Watkins @windjunky.bsky.social · 01/04/2025
Fascinating paper by @ccrc.bsky.social “Damage to world GDP in 2100 under SSP5-8.5 increases from ∼11% under models without global weather to ∼40% if global weather is included. Further … welfare-optimal amount of climate changes from ∼2.7C to ∼1.7C.” dx.doi.org/10.1088/1748...
152
Reposted by Aditya Sengupta
Andrew B. Watkins @windjunky.bsky.social · 24/03/2025
Australian coral reefs are currently ranging from 'bleach watch' to 'bleaching and most dying' categories. Be nice to see at least one 'no stress' sight, but hey... www.theguardian.com/environment/...
074
Reposted by Aditya Sengupta
Matt Kertman @mattkertman.bsky.social · 08/03/2025
Scenes from the incredible turnout today at Berkeley's @standupforscience.bsky.social rally. @tedmiguel.bsky.social, @jenniferdoudna.bsky.social, and dozens of researchers, elected officials, and citizens defended science and the jobs, health benefits, and progress it creates for all Americans.
350872
Reposted by Aditya Sengupta
Prof Ian Hall @ianhall.bsky.social · 02/03/2025
Onshore intensification of subtropical western boundary currents in a warming climate Inducing warming that worsens coastal marine heatwaves, reduces the ocean's capacity to absorb CO2, and destabilizes methane hydrates on the sea floor www.nature.com/articles/s41...
nature.com
Onshore intensification of subtropical western boundary currents in a warming climate - Nature Climate Change
Western boundary currents flow along the western edge of subtropical oceans, transporting heat polewards, and are integral in the climate system. Using high-resolution models, this work shows that wes...
0126
Reposted by Aditya Sengupta
Nature @nature.com · 02/03/2025
Science is necessary, but clearly not sufficient, for conveying the climate crisis go.nature.com/3XjoJCU
go.nature.com
How scientists can drive climate action: celebrate nature and promote hope
Nature - After years of storytelling and running classes and festivals, I’ve seen first-hand how a love of nature makes people want to protect it.
111834
Reposted by Aditya Sengupta
Monash CliComm @monashclicomm.bsky.social · 27/02/2025
As extreme weather and the cost of energy dominates the headlines, knowing how to separate fact from fiction is more important than ever. Check out this week’s Changing Climate’s article tackling some of the fishy information out there: bit.ly/changing-climates-articles
011
Reposted by Aditya Sengupta
Sang-Ki Lee @sklee621.bsky.social · 09/02/2025
Ocean has been losing its SST damping capacity (see Figure) since 1982 due to increased stratification, allowing SST anomalies and the associated climate and extreme weather events to attain stronger amplitude and persist longer. 🌊🧪 www.nature.com/articles/s41...
69835
Reposted by Aditya Sengupta
Brandi Robinson @brobinson121.bsky.social · 05/02/2025
Look for the good news when you can. ☀️
021
Reposted by Aditya Sengupta
Andrew King (he/him) @andrewkingclimate.bsky.social · 16/01/2025
If Australia wants to keep pace with other countries (let alone be a leader in science and innovation) then clearly this needs to change. www.abc.net.au/news/2025-01...
abc.net.au
Alex loves doing her PhD, but says she's earning under the minimum wage
Alexandra Paton, who researches how to manage feral cat populations, says her PhD is important for Australia's wildlife but her income is lower than what she earned as a teenager at Macca's.
0112
Aditya Sengupta @adisen99.bsky.social · 13/01/2025
The impact of ENSO on regional rainfall is nonlinear, which can have a severe impact on regional hydroclimate variability. In this new paper with @andrewkingclimate.bsky.social and @drjobrown.bsky.social, we assess CMIP6 models in capturing this nonlinearity - doi.org/10.1029/2024...
Figures describing the nature of the asymmetry of ENSO-rainfall teleconnections in two regions - East Australia and South-East Asia. East Australia experiences a stronger wet response during La Niña compared to the dry response during an El Niño, leading to a wet-type asymmetry. South-East Asia however, the effect is opposite with a stronger dry response during El Niño leading to a dry-type asymmetryRegional and performance of models in capturing the linear nature of ENSO-rainfall teleconnections for a July-June average.Regional and performance of models in capturing the nonlinear asymmetric nature of ENSO-rainfall teleconnections for a July-June average.
1146
Reposted by Aditya Sengupta
Andrew B. Watkins @windjunky.bsky.social · 10/01/2025
As relevant to the current fire situations, this new research highlights that in California *and* eastern Australia, we might swing more often or more intensely,from wet to dry. Such swings produce more dry fuels for fires. Bummer. For both. www.nature.com/articles/s43...
062
Reposted by Aditya Sengupta
Zack Labe @zacklabe.com · 23/12/2024
The ice at Santa's workshop is thinning away... #NorthPole 🎁🧑‍🎄 Check out my blog from November 2022 for more on this graphic: zacklabe.com/blog-archive...
115749
Reposted by Aditya Sengupta
UNSW Climate Change Research Centre @ccrc.bsky.social · 18/12/2024
New paper @natclimchange.bsky.social finds that humid heat during the 2024 Hajj pilgrimage neared human tolerance limits. Analysis (by the Lethal Humidity Council, including CCRC’s Steven Sherwood and Katrin Meissner @katrinmeissner.bsky.social) warns further warming would threaten more people.
nature.com
Humid heat exceeds human tolerance limits and causes mass mortality - Nature Climate Change
The hottest boreal summer on record has driven widespread humid heat mortality across every continent of the Northern Hemisphere. With critical physiological limits to human heat tolerance drawing eve...
1226
Reposted by Aditya Sengupta
Ailie Gallant @ailiegallant.bsky.social · 02/12/2024
We always think of heatwaves as causing unbearable conditions for us, but did you know they happen in the ocean too? They're happening more and are becoming hotter, impacting everywhere from Tassie to Queensland. Read more in the latest brief from the Centre of Excellence for Climate Extremes.
climateextremes.org.au
Marine Heatwaves - The ARC Centre of Excellence for Climate Extremes
Efforts to curtail global warming by reducing greenhouse gas emissions should remain a priority so that the risks of marine heatwaves can be reduced.
072
Aditya Sengupta @adisen99.bsky.social · 29/11/2024
The rate at which our planet warms matters. It is not just that rate of warming has direct impacts on heat stress and heat related mortality in vulnerable areas of the world, but it also affects Adaptation and Mitigation measure tackling climate change. climateextremes.org.au/is-the-clima...
climateextremes.org.au
Is the Climate Changing Faster than Expected? - The ARC Centre of Excellence for Climate Extremes
The evidence is clear: the impacts of global warming are increasing, and to reduce them, we require a deep and rapid cut in greenhouse gas emissions.
040
Reposted by Aditya Sengupta
Tim Raupach @timraupach.com · 28/11/2024
Is the climate changing faster than expected? An excellent briefing note from the ARC Centre of Excellence for Climate Extremes looks at this question. climateextremes.org.au/is-the-clima...
climateextremes.org.au
Is the Climate Changing Faster than Expected? - The ARC Centre of Excellence for Climate Extremes
The evidence is clear: the impacts of global warming are increasing, and to reduce them, we require a deep and rapid cut in greenhouse gas emissions.
3229
Reposted by Aditya Sengupta
Kai Kornhuber @kornhuber.bsky.social · 26/11/2024
'Global emergence of regional heatwave hotspots outpaces climate model simulations' our new paper in @pnas.org with S. Bartusek, R. Seager. J. Schellnhuber and M. Ting investigating the tail behaviour of extreme heatwave trends. @iiasa.ac.at @columbiaclimate.bsky.social @lamontearth.bsky.social
15356148
Reposted by Aditya Sengupta
EOst* @etiost.bsky.social · 27/11/2024
🆕A new climate oscillation may develop in the Arctic Ocean due to sea-ice melting. Air-sea feedbacks in the ice-free Arctic could trigger periodic warm-cold temperature cycles, resembling El Niño and La Niña in the tropical Pacific.🌏 www.nature.com/articles/s41...
nature.com
‘Arctic Niño’ might emerge in an ice-free world - Nature Climate Change
A novel type of climate oscillation might emerge in the Arctic Ocean owing to sea-ice melting. The air–sea coupling feedbacks occurring in the ice-free Arctic Ocean would trigger periodic warm–cold te...
042
Aditya Sengupta @adisen99.bsky.social · 25/11/2024
In our recent GRL study- doi.org/10.1029/2024... - with @andrewkingclimate.bsky.social and Rob Ryan, we analysed global and regional accelerated warming. But, is an acceleration rate on the order of 0.001 degC/decade**2 really significant? The supplementary text contains the answer and it is - YES!!
3418
Reposted by Aditya Sengupta
Andrew King (he/him) @andrewkingclimate.bsky.social · 24/11/2024
New paper led by @adisen99.bsky.social shows how accelerating global warming has been associated with local warming acceleration experienced by some people but not everyone agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
Inequity in Population Exposure to Accelerated Warming
The globe and most locations have experienced acceleration of warming over the last century Regions which imposed clean air acts in the late twentieth century have experienced a greater increase ...
34414
Reposted by Aditya Sengupta
umsonst.bsky.social @umsonst.bsky.social · 19/11/2024
Another striking example of how we disturb the equilibrium of the systems components Arctic sea ice had a dampening effect on El Ninos and La NInas. Now as it vanishes less sea ice is thought to support the formation of stronger El Ninos and La NInas... #climate #uöäü1feedbacks #uöäü1ENSO
science.org
Arctic sea ice–air interactions weaken El Niño–Southern Oscillation
Interactions between Arctic sea ice and the atmosphere can dampen ENSO amplitude in the tropics.
011