TC (Tirthankar Chakraborty)'s Avatar

TC (Tirthankar Chakraborty)

@tchakraborty.bsky.social

Earth Scientist @ Pacific Northwest National Lab; previously Yale (PhD '21); more previously IIT Kanpur (M.Tech '15) | urban climate | aerosols | remote sensing | heat stress | Google Earth Engine | geospatial | machine learning | https://tc25.github.io/

4,728 Followers  |  768 Following  |  204 Posts  |  Joined: 02.09.2023  |  2.2209

Latest posts by tchakraborty.bsky.social on Bluesky

I have promised 12 people that I will do 24 things by this weekend.

I am hoping to finish 2 of those things soon. πŸ‘€

29.09.2025 01:57 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Will be in Austin next week for the Artificial Intelligence and Digital Twins for Earth Systems workshop (aidt4es.usacm.org).

Looking forward to trying some Texas-style brisketπŸ˜…; & yes, also presenting on several past/ongoing studies on applications of #machinelearning for #urban #microclimate.

20.09.2025 18:09 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thanks, Matt!

11.09.2025 15:31 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thanks, Adam!

11.09.2025 15:31 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

This is a huge honor and I cannot overstate the tremendous amount of support I have received for this award and in other ways at the lab. I am also incredibly indebted to my nominator and my internal and external recommendation letter writers.

09.09.2025 13:13 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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I am flabbergasted once again; this time on being one of the recipients of the Ronald L. Brodzinski Award for Early Career Exceptional Achievement, one of the Laboratory Director’s Awards for Science and Engineering Achievement at the Pacific Northwest National Laboratory.

09.09.2025 13:13 β€” πŸ‘ 13    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0
LinkedIn This link will take you to a page that’s not on LinkedIn

University of Massachusetts Lowell is looking for a #postdoctoral research associate to implement #system #dynamics modeling to assess #decarbonization pathways, integrate #extremeweather scenarios and #energyresilience, and engage stakeholders in exploring energy futures for #Massachusetts.

04.09.2025 14:21 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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🌍 The #ERL Focus Issue on Human–Earth System Interactions under Climate Change is now complete!

Explore research on how human activities interact with Earth system processes, plus a closing editorial from the Guest Editors:
πŸ”— iopscience.iop.org/collections/...
#ClimateChange #OpenAccess

01.09.2025 11:01 β€” πŸ‘ 4    πŸ” 3    πŸ’¬ 2    πŸ“Œ 0
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The EPA cited my paper in their argument against the endangerment finding today. However, their point is completely backwards: my paper actually supports the EPA's 2009 range of 1.8C to 4C warming by 2100. www.nature.com/artic...

29.07.2025 21:03 β€” πŸ‘ 713    πŸ” 283    πŸ’¬ 18    πŸ“Œ 24
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I am co-chairing a couple of sessions at #AMS26.

'Mapping and Modeling Urban Environments Exposures and Corresponding Health Impacts': lnkd.in/g55YHZ-C

'Weather-human-energy dynamics in urban areas': lnkd.in/gMmaGbUb

You can submit to all sessions through: lnkd.in/g_KWM5tu

Deadline: 14 August

01.08.2025 16:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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I keep complaining about people submitting their abstracts too close to the deadline; and here I am...

#AGU25

@agu.org

29.07.2025 21:34 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Perfect.

@agu.org

27.07.2025 06:07 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

It's the last weekend before the #AGU25 #abstract submission #deadline, which means it is finally time to submit your abstracts and crash their website.

If you are working on #urban-scale processes, consider submitting to our sessions (links below).

1. lnkd.in/gXXtKvtb

2. lnkd.in/gWuN2Yw6

27.07.2025 04:09 β€” πŸ‘ 1    πŸ” 1    πŸ’¬ 0    πŸ“Œ 1
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If you are working on #urban modeling across #scales (#process-based to #hybrid to #machinelearning models), including development, benchmarking, and implementation, please submit to our #AGU25 session on this topic: lnkd.in/gTpTrw-9

The deadline is July 30th.

19.07.2025 23:13 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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17th Conference on Environment and Health The 106th AMS Annual Meeting will take place from 25 to 26 January, 2026 in Houston, Texas.

🚨Call for Abstracts! Submit to the 17th AMS Conference on Environment & Health at #AMS2026 by Aug 14, 2026 πŸ—“οΈ
See the list of topic sessions and joint sessions 🌑️🌍 πŸŽ“ Student awards available! Feel free to reach out for more info! annual.ametsoc.org/2026/program...
@ametsoc.org

16.07.2025 18:32 β€” πŸ‘ 8    πŸ” 5    πŸ’¬ 1    πŸ“Œ 0
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PhD Intern - Urban Dynamics in Earth System Models in Multiple Locations | Pacific Northwest National Laboratory PNNL is hiring a PhD Intern - Urban Dynamics in Earth System Models in Multiple Locations. Review all of the job details and apply today!

I am looking to hire (careers.pnnl.gov/jobs/10733?l...) a PhD #intern to work on representing #urban expansion in the Earth system models. One goal after implementing this capability would be to examine the impact of different projections of urban land on #weather extremes & #climate.

Please share.

17.06.2025 23:35 β€” πŸ‘ 5    πŸ” 8    πŸ’¬ 0    πŸ“Œ 0
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🚨In our new paper (doi.org/10.1016/S254... in @thelancetplanet.bsky.social, we develop the Healthy Urban Design Index (HUDI) to gauge the performance of 917 cities in 4 key domains in #Europe using #opensource data.

We hope the HUDI can be a starting point for informing #sustainable #urban design.

12.06.2025 11:19 β€” πŸ‘ 7    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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I had been guest editing a focus issue on 'Human-Earth System Interactions under Climate Change' for Environmental Research Letters with several of my colleagues.

Here (doi.org/10.1088/1748...) is the closing editorial on this issue, which details the insights gained from these studies.

06.06.2025 22:26 β€” πŸ‘ 3    πŸ” 2    πŸ’¬ 0    πŸ“Œ 0

Older #BlueSky thread on key results of the study: bsky.app/profile/tcha...

01.06.2025 19:31 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Article (www.pnnl.gov/publications...) on a few recent papers I have contributed to, particularly our @natgeosci.nature.com paper (doi.org/10.1038/s415...) on the impact of #agricultural #irrigation in the #UnitedStates on #urban #heatstress.

Love the schematic PNNL's comms team made for this.

01.06.2025 19:31 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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U-Surf: a global 1 km spatially continuous urban surface property dataset for kilometer-scale urban-resolving Earth system modeling Abstract. High-resolution urban climate modeling has faced substantial challenges due to the absence of a globally consistent, spatially continuous, and accurate dataset to represent the spatial heter...

Read more here: doi.org/10.5194/essd...

27.05.2025 13:27 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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In our recent paper in @copernicusecmwf.bsky.social Earth System Science Data, we develop #U-Surf, a global 1 km facet-level #urban property dataset.

U-Surf is structurally consistent with the urban canyon assumption in process-based #models & addresses a longstanding data gap in these models.

27.05.2025 13:26 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 1    πŸ“Œ 0
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A summary of the results of our recent Nature Communications paper (doi.org/10.1038/s414...) is the feature article of this quarter's International Association for Urban Climate newsletter.

Also read the newsletter for other recent news on #urban #climate #science: urban-climate.org/wp-content/u...

20.05.2025 20:31 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The #climate pledge is dying in the U.S., but at least I have been getting a good view of its namesake arena + the #Seattle skyline. 🀷

05.05.2025 19:55 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Our recent @agu.org @eos.org article on our past and ongoing efforts at the Pacific Northwest National Laboratory to train #Earth scientists on applications of #AI and #machinelearning approaches to address real-world #research problems in the #geosciences.

30.04.2025 13:34 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Crowdsourced air temperatures contrast satellite measures of the urban heat island and its mechanisms Satellites overestimate urban heat islands.

This presentation is on Friday and covers results from a few studies, including doi.org/10.1126/scia..., doi.org/10.1029/2022..., doi.org/10.1088/1748..., and doi.org/10.1016/j.uc....

27.04.2025 15:13 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I was also invited to give a talk in the "Nature based Solutions to address growing risk of Urban Heat Islands interacting with Climate Change" session. For that, I will be complaining about using #satellite-derived land surface #temperature to estimate the #cooling benefits of urban #vegetation.

27.04.2025 15:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
LinkedIn This link will take you to a page that’s not on LinkedIn

First, tomorrow (if I can wake up on time), I will be giving an overview of our last year's study (doi.org/10.1016/j.on...) examining the impact of #urban evolution (urban growth + changes in urban properties over time) on #continental to #regional-scale #warming.

27.04.2025 15:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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I am attending #EGU25 virtually this year.

I have a couple of presentations:

27.04.2025 15:12 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 1

πŸ“’ In our recently published paper in Nature #Climate Change, we show that, when we consider the entire #annual cycle, the protective effects of the #urban #heat island during the coldest periods exceed (by over 4 times) the adverse effects during the warmest periods for most non-tropical #cities.

23.04.2025 01:33 β€” πŸ‘ 8    πŸ” 5    πŸ’¬ 1    πŸ“Œ 1

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