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Trinish Chatterjee

@trinish-chatterjee.bsky.social

29 followers 136 following 8 posts

Climate Researcher-In-Training | PhD Candidate at Columbia University | Former Electrical Engineer | Community Advocate

Posts Replies Media

Trinish Chatterjee @trinish-chatterjee.bsky.social · 04/05/2026

7/7 Huge thanks to my incredible co-authors Danielle Touma, Adam Sobel, and my advisor Radley Horton — your guidance made this possible. Paper is open access, check it out!

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Trinish Chatterjee @trinish-chatterjee.bsky.social · 04/05/2026

6/7 Why does this matter? Larger EP footprints = greater risk of simultaneous flooding across watersheds, overwhelmed emergency response, larger single-event economic losses, and potential insurer insolvency from a high volume of claims all at once.

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Trinish Chatterjee @trinish-chatterjee.bsky.social · 04/05/2026

6/7 Additionally, in the eastern US, large-area events are becoming significantly more frequent. We find that this is probably a function of the previously-reported trends in increasing overall extreme precipitation intensities in these regions.

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Trinish Chatterjee @trinish-chatterjee.bsky.social · 04/05/2026

5/7 Small-area EP events are declining in frequency everywhere in the US. EP is concentrating into fewer days per year -- but on those days, the affected area is getting larger.

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Trinish Chatterjee @trinish-chatterjee.bsky.social · 04/05/2026

4/7 In our study, we found that EP event sizes follow a logarithmic distribution. The largest ~20% of events account for nearly 80% of all EP area in the US. And those big events? They're also more intense on average. A double threat. ⚡

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Trinish Chatterjee @trinish-chatterjee.bsky.social · 04/05/2026

3/7 For example: non-spatial methods suggest EP frequency is only increasing in the eastern US. But spatially-aware analysis reveals EP is actually decreasing in frequency across a much wider swath of the country, including the west and south. That's a sign change!

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Trinish Chatterjee @trinish-chatterjee.bsky.social · 04/05/2026

2/7 Most EP research focuses on rainfall intensity at single locations. We asked: how *large* are these events, and how is that changing? Turns out, looking at spatial scale gives you a very different -- but more complete -- picture.

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Trinish Chatterjee @trinish-chatterjee.bsky.social · 04/05/2026

1/7 🎉 Excited to share our new paper, out now in Geophysical Research Letters! We looked at something underexplored in the extremes literature: the spatial footprint of extreme precipitation (EP) events across the US over the last ~45 years. agupubs.onlinelibrary.wiley.com/doi/10.1029/...

agupubs.onlinelibrary.wiley.com

Climatology and Trends in Spatial Scales of Extreme Precipitation Over Land in the Contiguous US

The distribution of US daily extreme precipitation spatial size is logarithmic, and large-area events dominate trends and climatology Large-area extreme precipitation events tend to be more inten...

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Reposted by Trinish Chatterjee

Tacoma Mark 🇺🇦 @tacoma-mark.bsky.social · 10/12/2025

Silt & muddy water from the Puyallup River flowing in the Thea Foss Waterway in downtown Tacoma this evening with the tides. Round two of this bad atmospheric river is about to begin. Big flooding on local rivers including the Puyallup. #wawx #tacoma #pnw #downtowntacoma #fosswaterway #puyallupriver

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Reposted by Trinish Chatterjee

Meteorologist Dan Smith @dansmithweather.bsky.social · 11/12/2025

Major flooding is underway in parts of the Pacific Northwest. An "atmospheric river" (moisture plume) continues to dig a few states inland, with water rescues and evacuations in Washington -- and reports of collapsed bridges in Idaho/Montana. #PNW #flood #weather

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Reposted by Trinish Chatterjee

🦌 The Deer Whisperer 🦌 @thedeerwhisperer.bsky.social · 12/12/2025

👀 After all the rain and flooding we've already had here in the PNW, this is what's coming on the heels of it on Monday.

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