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/https://bsky.app/profile/tchakraborty.bsky.socialhttps://bsky.app/profile/tchakraborty.bsky.social/post/3mrhvtecem222Next week will be my first time attending the @ecologicalsociety.bsky.social Annual Meeting. I will be giving an invited talk on 'Remote Sensing of Fine-Scale Vegetation for Optimized Urban Heat Mitigation'. I am not anything close to an ecologist; so looking forward to stepping out of my bubble.25 Jul 2026 12:51 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mrhvtecem222https://bsky.app/profile/tchakraborty.bsky.social/post/3mr3evxpdbc2z#EarlyCareer Researchers Committee, International Association for #Urban #Climate is organizing a webinar to bring together insights from previous Alexander von Humboldt Postdoctoral Fellowship awardees in our field. Learn about the application process + practical tips. Register: lnkd.in/gw9UnsPS20 Jul 2026 13:16 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mr3evxpdbc2zhttps://bsky.app/profile/tchakraborty.bsky.social/post/3mqz476ozq22nThere has been an explosion in #urbanheat monitoring using low-cost meteorological sensors. In our paper (https://doi.org/10.1175/BAMS-D-25-0222.1) in Bulletin of @ametsoc.org, we empirically show why we need to be careful about large biases in such sensors; & provide guidelines for their effective deployment.19 Jul 2026 15:35 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mqz476ozq22nhttps://bsky.app/profile/tchakraborty.bsky.social/post/3mqc7treagc2jIf you are working on representation of #urban processes & dynamics in #models (process-based &/or #AI/ML), including model #development, #benchmarking, & #validation, consider submitting your abstract to our urban modeling session at #AGU26. Submit here: https://agu.confex.com/agu/agu26/prelim.cgi/Session/280093 @agu.org10 Jul 2026 13:09 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mqc7treagc2jhttps://bsky.app/profile/tchakraborty.bsky.social/post/3mpwjm4pqus2j#Gemini is having an identity crisis.05 Jul 2026 21:32 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mpwjm4pqus2jhttps://bsky.app/profile/tchakraborty.bsky.social/post/3moq2nlafwk2rNo, I do not. I know how to write (for now).20 Jun 2026 14:23 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3moq2nlafwk2rhttps://bsky.app/profile/tchakraborty.bsky.social/post/3mn3o67tjo22pIn our just published #openaccess paper (https://doi.org/10.1038/s41467-026-73716-7) in @natcomms.nature.com, we introduce U-HAT, a high-resolution #urban-resolving #airtemperature (AT) dataset that can more accurately capture the unique spatiotemporal patterns of AT over #cities. [1/n]30 May 2026 18:21 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mn3o67tjo22phttps://bsky.app/profile/tchakraborty.bsky.social/post/3mmejor6mzc24The Early Career Committee of International Association for Urban Climate was formed to strengthen #earlycareer representation within #urbanclimate community. To #earlycareer folks in this domain, please fill out this survey (forms.gle/hjpPiMVbi6pdF8QW9) so we understand how best to support you. https://forms.gle/hjpPiMVbi6pdF8QW921 May 2026 13:30 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mmejor6mzc24https://bsky.app/profile/tchakraborty.bsky.social/post/3mm2hsqbmvc2iWill be in Austin next week. First, I will present ongoing work on 10 m #global #satellite detection of #urban #flooding at HydroML. Then, on Friday, I will give a seminar at UT Austin on better capturing the spatial variability of #urban #microclimate in process-based & #machinelearning models.17 May 2026 13:30 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mm2hsqbmvc2ihttps://bsky.app/profile/tchakraborty.bsky.social/post/3mly7fy57mk2tIn our just published #openaccess paper in @natcomms.nature.com (lnkd.in/g5wRBXwU), we provide a comprehensive #global assessment of how background #climate & #urban #morphology jointly shape the #UrbanHeatIsland effect across 2,213 cities, & how these interactions may evolve in the future. 1/n16 May 2026 15:54 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mly7fy57mk2thttps://bsky.app/profile/tchakraborty.bsky.social/post/3mlhnabrzr224The existence of 𝘕𝘢𝘵𝘶𝘳𝘦 𝘊𝘪𝘵𝘪𝘦𝘴 is both a 𝗴𝗼𝗼𝗱 and a 𝗯𝗮𝗱 thing because it shows that the discipline has matured enough that funding intended for doing science can now be systematically siphoned off by Springer Nature to host branded PDFs on their website.10 May 2026 01:46 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mlhnabrzr224https://bsky.app/profile/tchakraborty.bsky.social/post/3ml6plrtbis2iIn our recently published paper in @natcomms.nature.com (lnkd.in/gDyWxM7U), we provide a comprehensive #global assessment of how #urban #trees mitigate the #airtemperature (AT) #UrbanHeatIsland (UHI) effect, and how they stack up against future #climatechange related #warming. [1/n]06 May 2026 12:34 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3ml6plrtbis2ihttps://bsky.app/profile/tchakraborty.bsky.social/post/3mjszwsg3b22xHeading to East Coast this week; first to give a seminar at the Yale Center for Geospatial Solutions on #satellite monitoring of #global #urban areas, then to Princeton to talk about better capturing spatial variability of urban #microclimate in both process-based & #machinelearning models.19 Apr 2026 03:42 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mjszwsg3b22xhttps://bsky.app/profile/tchakraborty.bsky.social/post/3mjhcfmdvq22wEvery day, I hit the nail on the head. At least that's what my good friend, #Gemini 3.1 Pro, tells me.14 Apr 2026 11:42 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mjhcfmdvq22whttps://bsky.app/profile/tchakraborty.bsky.social/post/3mjajhybses2aThe impacts of #urban areas on #clouds & #precipitation are complicated due to multiple competing pathways. In our new @agu.org paper (https://doi.org/10.1029/2025JD045131), we explore how the #Houston metropolitan area influences summertime cloud formation & #convective storms using both models & observations.11 Apr 2026 19:00 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mjajhybses2ahttps://bsky.app/profile/tchakraborty.bsky.social/post/3miea5ilk5k25It's happening again (already an issue in the #urban #heat literature: arxiv.org/abs/2509.16568). #DataCenters can definitely create #heatislands, but using #satellite data would significantly overestimate the public health implications of it. Also, can we not have news articles on #preprints?31 Mar 2026 12:58 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3miea5ilk5k25https://bsky.app/profile/tchakraborty.bsky.social/post/3mhkls4t2ps2sIt is often claimed that as cities grow, the urban heat island (UHI) effect intensifies. In our recently published paper in PNAS Nexus (lnkd.in/ghZf5WAr), we show that historical #urban #heat dynamics have been far more nuanced.21 Mar 2026 08:17 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mhkls4t2ps2shttps://bsky.app/profile/tchakraborty.bsky.social/post/3mgx6b5wbps26Heading back to my alma mater, @yale.edu, next month! I’m giving a seminar on monitoring #global #urban #environments from space at the Yale Center for Geospatial Solutions on 4/22. Will cover #satellite #remotesensing of #urban #heat, #vegetation, #flooding, & #climate. Details: lnkd.in/ehSzd4RM13 Mar 2026 14:55 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mgx6b5wbps26https://bsky.app/profile/tchakraborty.bsky.social/post/3mgtbyn73f22rThe chapter on 'Extreme Temperatures, Air Quality, and Public Health' of the book 'Climate Change Impacts in Texas' I wrote (with Melissa Allen-Dumas) has now been published. Link to chapter: lnkd.in/gKdf2iVN #extremeheat #climatechange #airquality #publichealth12 Mar 2026 01:51 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mgtbyn73f22rhttps://bsky.app/profile/tchakraborty.bsky.social/post/3mg4lzcmn422gIn 2022 (back when #Twitter was still a thing), I had made this #meme about the state of #urban #climate #research based on an #xkcd comic. With all the recent changes in the #publication and #funding spaces due to the #AI + #machinelearning hype cycle, here is an updated version.03 Mar 2026 01:19 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mg4lzcmn422ghttps://bsky.app/profile/tchakraborty.bsky.social/post/3mdnv3m4x6k2rYour random forest model does not need a name.30 Jan 2026 18:01 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mdnv3m4x6k2rhttps://bsky.app/profile/tchakraborty.bsky.social/post/3mbz6ycnyg22aA summary of recent key developments for #km-scale #urban-resolving #Earth system modeling is the feature article of this quarter's International Association for #Urban Climate newsletter: lnkd.in/gY7fDycp Related, a report (lnkd.in/gs3j4Mjs) I led that provides more details on these developments.09 Jan 2026 19:07 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3mbz6ycnyg22ahttps://bsky.app/profile/tchakraborty.bsky.social/post/3m7lasz6hqc2o📢 Check out our just published paper (https://authors.elsevier.com/c/1mF0A9C~Iu7o0T) in @cp-oneearth.bsky.social on present to future county-wise sociodemographic disparities in #moistheat ( #heatindex ) for different @ipcc.bsky.social scenarios for the #UnitedStates.09 Dec 2025 19:12 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3m7lasz6hqc2ohttps://bsky.app/profile/tchakraborty.bsky.social/post/3m6llc46jz22aHave been getting a bunch of emails about Springer Nature's Discover XYZ journals over the last couple of months. Seems like MDPI/Frontiers got hold of a tuxedo. It's so over for #academicpublishing.27 Nov 2025 04:54 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3m6llc46jz22ahttps://bsky.app/profile/tchakraborty.bsky.social/post/3m5z6gbi3fs2sIf you are attending IGARSS 2026, please consider submitting your abstracts to the #Community Contributed Theme focusing on monitoring #global #urban areas from #space we are organizing. The submission deadline is Jan 10th: https://2026.ieeeigarss.org/Papers/Submission.asp And yes, our theme number is 42. :D19 Nov 2025 21:16 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3m5z6gbi3fs2shttps://bsky.app/profile/tchakraborty.bsky.social/post/3m4xwdsyvq22fMy citation collection has apparently crossed 5000, which is definitely a number.06 Nov 2025 15:54 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3m4xwdsyvq22fhttps://bsky.app/profile/tchakraborty.bsky.social/post/3m3mv7qqydk2kSomething strange is going on with @microsoft.com #Teams for the last few days, where it keeps flagging completely correct words. Unhelpful and distracting. I am sensing some #AI shenanigans.20 Oct 2025 13:09 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3m3mv7qqydk2khttps://bsky.app/profile/tchakraborty.bsky.social/post/3lzwvuea3zc2qI have promised 12 people that I will do 24 things by this weekend. I am hoping to finish 2 of those things soon. 👀29 Sep 2025 01:57 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3lzwvuea3zc2qhttps://bsky.app/profile/tchakraborty.bsky.social/post/3lzbxyhwfjc2wWill 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 brisket😅; & yes, also presenting on several past/ongoing studies on applications of #machinelearning for #urban #microclimate.20 Sep 2025 18:09 +0000at://did:plc:7emfm7iddtd346j5ppjwxeip/app.bsky.feed.post/3lzbxyhwfjc2w