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Tamlin Pavelsky

@globalhydro.bsky.social
1.1K followers 532 following 30 posts

Professor at UNC, hydrology lead for NASA SWOT mission. Water, climate, remote sensing. Alaskan. he/him. uncglobalhydrology.org

PostsRepliesMedia
Reposted by Tamlin Pavelsky
Helena Garcia @hmgarciaaa.bsky.social · 14/07/2025
Check out our new paper in Earth’s Future! We mapped 78 flood events in eastern NC from 1996-2020 and found flooding (& repeat flooding) is more common than we previously thought. Paper: agupubs.onlinelibrary.wiley.com/doi/10.1029/... Data (NC-FLDEX): dataverse.unc.edu/dataset.xhtm...
agupubs.onlinelibrary.wiley.com
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Tamlin Pavelsky @globalhydro.bsky.social · 15/07/2025
Check out this amazing opportunity to work with a rising star!
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Bill McKibben @billmckibben.bsky.social · 09/07/2025
Among all the big bad things happening on our planet, there's one Big Good Thing, the sudden, startling rise of solar energy. It changes the power dynamic, in every sense of the word 'power.' www.newyorker.com/news/annals-...
newyorker.com
4.6 Billion Years On, the Sun Is Having a Moment
In the past two years, without much notice, solar power has begun to truly transform the world’s energy system.
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Ben Lockwood, PhD @benlockwood.bsky.social · 18/06/2025
Looking at my to-do list and sobbing while I click accept on another manuscript review invitation
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Tamlin Pavelsky @globalhydro.bsky.social · 18/06/2025
Me this morning reading an MS thesis from my lab. Reading good grad student work is SUCH a joy.
media.tenor.com
a man with a beard and long blonde hair is holding a sword in a forest .
ALT: a man with a beard and long blonde hair is holding a sword in a forest .
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George H. Allen @geoallen.bsky.social · 19/05/2025
Hydrologists! Ever heard of a Spatial Hydrograph? Our new paper in @agu.org GRL shows that the SWOT satellite can capture spatial flow waves propagating down rivers—something previously only only observable at river gauges: doi.org/10.1029/2024... #SWOT #hydrology #RemoteSensing #EarthObservation
Example of how the Surface Water and Ocean Topography (SWOT) satellite's water surface elevation measurements can be used to record flow wave propagation over space and generate a “spatial hydrograph.”
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UNC Institute for the Environment @unc-ie.bsky.social · 14/05/2025
🌎 A champion for environment and sustainability, @unc-ie.bsky.social director and @uncchapelhill.bsky.social chief sustainability officer @mpiehler.bsky.social was recently named Cary C. Boshamer Distinguished Professor. Read more about Piehler's deep Carolina roots and distinguished career.
ie.unc.edu
A champion for environment and sustainability, Piehler named Cary C. Boshamer Distinguished Professor  - UNC Institute for the Environment
Piehler is a renowned leader in coastal environmental science.
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Jacquelyn Gill @jacquelyngill.bsky.social · 14/05/2025
The American public is broadly supportive of maintaining federal science and medical research funding, and against punishing universities by taking their funding away, according to a new poll:
apnorc.org
Few support punitive funding cuts to colleges and universities - AP-NORC
Most of the public believes that colleges and universities make significant contributions to scientific and technological advancement and think their federal research funding should be maintained.
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Tamlin Pavelsky @globalhydro.bsky.social · 12/05/2025
Are water levels in wetlands important to you? @kica22.bsky.social's new paper in GRL shows that the SWOT satellite can measure water surface elevations in the Everglades with a mean absolute error of 6.7 cm. Check it out! agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Scientific figuring with three panels. Left panel shows a map of the Everglades in Florida overlaid with data from the SWOT mission. It shows very detailed water level data throughout the everglades. The second panel, in the upper right, is a scatterplot showing in situ gauge water level against SWOT water level. It shows a mean absolute error of 6.7 cm, a correlation coefficient of 0.996, and a mean bias of 6.8 cm. The third figure, a scatterplot in the lower right, shows that by averaging 30 or more SWOT pixels, high accuracy is possible.
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Doug Edmonds @hoosierriver.bsky.social · 23/04/2025
Feeling humbled by this award and wanted to share the story from IU News. Im grateful to my @iuearth.bsky.social colleagues and all the students that have worked with me over the years. news.iu.edu/live/news/45...
news.iu.edu
IU earth scientist’s research into rivers and flooding earns him prestigious Guggenheim Fellowship
Douglas Edmonds, a professor in the Department of Earth and Atmospheric Sciences, was selected for the 100th class of Guggenheim Fellows. He was one of tw...
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George H. Allen @geoallen.bsky.social · 08/04/2025
What a fun paper describing rivers in North and South America that flow into multiple drainage basins. agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
Unusual Drainages of the Americas
We describe nine river bifurcations and bifurcation lakes in North and South America. They at first seem to defy the rules of hydrology These unusual water bodies exhibit bidirectional flow, unre...
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Brian Cardone @cardonebrian.bsky.social · 04/04/2025
🚨🚨Calling all North Carolina voters!! Here is a list of every voter that Jefferson Griffin is trying to disenfranchise, please if you are a NC voter check to see if your name is on here, you have 15 days to cure your ballot to make sure your vote counts. thegriffinlist.com/assets/griff...
thegriffinlist.com
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Tamlin Pavelsky @globalhydro.bsky.social · 19/03/2025
Do you work on lakes globally? Check out what is, to my mind, the most complete global database of lakes (~6M) and associated attributes, newly published in WRR. Also the basis for SWOT lake data. agupubs.onlinelibrary.wiley.com/doi/full/10....
Map of global lake distribution, colored by the number of SWOT overpasses per 21 day cycle. There are many lakes with a high number of SWOT overpasses at high northern latitudes, but there are also tens of thousands to more than a million lakes on every continent. Lakes are graphed by latitude and longitude on the edges of the figure.
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Dr. Samantha Montano @samlmontano.bsky.social · 06/02/2025
This is effectively what led to the 1900 Galveston Hurricane being the most deadly storm in U.S. history. We are so back, i guess. 😩
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Amanda Gay DelVecchia @agdelv.bsky.social · 05/02/2025
Converge freshwater science series! Joining freshwater scientists from across the triangle area to discuss ideas in a safe, collegial atmosphere monthly. Thank you NCSU for hosting the January meeting! And thank you to @ardonlab.bsky.social and other presenters for leading discussions.
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Zeke Hausfather @zekehausfather.com · 15/01/2025
I have a new paper in Dialogues on Climate Change exploring climate outcomes under current policies. I find that we are likely headed toward 2.7C by 2100 (with uncertainties from 1.9C to 3.7C), and that high end emissions scenarios have become much less likely. journals.sagepub.com...
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Gerard Rocher-Ros @grocherros.bsky.social · 14/01/2025
I'm hiring, two fully funded PhD positions! Come work in Umeå in Arctic Sweden, a leading place for high-latitude ecosystem ecology and carbon biogeochemistry
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Hilary McMillan @mcmillanhydro.bsky.social · 14/01/2025
Interested in headwater streams? Headwaters make up 77% of global river networks, but have fewer gauges, less accurate models and lesser protections than large rivers. See our review led by @goldenwater.bsky.social at www.nature.com/articles/s44...
nature.com
Advancing the science of headwater streamflow for global water protection - Nature Water
Despite their substantial contributions to watershed resilience, headwater streams are becoming increasingly imperilled. This Perspective summarizes the status of headwater streamflow information and ...
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Santiago Gassó @sangasso.bsky.social · 09/01/2025
🧪 And this one is on how we talk about and frame some climate concepts to wider audiences (including scientists). Interesting looking read. www.nature.com/articles/s41...
nature.com
‘Tipping points’ confuse and can distract from urgent climate action - Nature Climate Change
The tipping points framing is widely used in climate discussions but receives mixed feedback. This Perspective critiques it for oversimplifying the complexities of natural and social systems and faili...
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Tamlin Pavelsky @globalhydro.bsky.social · 09/01/2025
This is apocalyptic.
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Michael Meyer @mishafredmeyer.bsky.social · 08/01/2025
Do you do #remotesensing of aquatic environments, but you want aquatic surface reflectance data. Well, we processed the entire #Sentinel2 record for #AQUATIC surface reflectance in the Contiguous US. You can now access those data from Amazon Web Services for FREE! registry.opendata.aws/usgs_aqr/
registry.opendata.aws
Sentinel-2 ACOLITE-DSF Aquatic Reflectance for the Conterminous United States - Registry of Open Data on AWS
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Li Li (李黎) @lireactivewater.bsky.social · 03/01/2025
Happy new year! Thrilled to announce Women Advancing River Research (WARR) 2025, featuring inspiring women on water research from around the world. 11 am, US eastern, 3rd Thursday every month. Register: psu.zoom.us/meeting/regi... Recordings 2021- 2024: www.cee.psu.edu/events/women...
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Mike Flannigan @mikeflannigan.bsky.social · 02/01/2025
Congratulations to Weiwei Wang (early career researcher) on her paper in Science out today - 'Canadian forests are more conducive to high-severity fires in recent decades' largely due to increases in fuel aridity. www.science.org/doi/10.1126/...
science.org
Canadian forests are more conducive to high-severity fires in recent decades
Canada has experienced more-intense and longer fire seasons with more-frequent uncontrollable wildfires over the past decades. However, the effect of these changes remains unknown. This study identifi...
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Christa Kelleher @hydrochrista.bsky.social · 02/01/2025
A little bit delayed, but I hear it's picking up over here so sending this out into the world: our Lafayette team including Rachel Hurley (now grad student at WPI), Dave Brandes, and me put out this piece on flashiness across the Mid-Atlantic: onlinelibrary.wiley.com/doi/abs/10.1...
onlinelibrary.wiley.com
Drivers and Buffers of Stream Flashiness in the Mid‐Atlantic United States
In this study, we investigated flashiness across 195 Mid-Atlantic sites, each within one of seven different physiographic regions. Our findings identified several drivers and buffers of flashiness, e...
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Erika Wise @wiseclimate.bsky.social · 02/01/2025
Interested in the Great Plains Low-Level Jet, the Missouri River Basin, flooding, and/or moisture transport? Check out our new paper: agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
The Role of the Great Plains Low‐Level Jet in Moisture Transport, Streamflow, and Flooding in the Missouri River Basin
The Great Plains low-level jet (GPLLJ) has a clear and consistent impact on Missouri River streamflow and peak flows during the warm season GPLLJ is associated with 29%–46% of warm season precipi...
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George H. Allen @geoallen.bsky.social · 31/12/2024
New paper by Dongmei Feng finds an interesting pattern in global streamflow trends through time: increasing streamflow in upstream river reaches and decreasing flow in downstream reaches: www.science.org/doi/full/10....
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Xi Yang| 杨曦 @xiyang.bsky.social · 17/12/2024
I am deeply troubled and shocked by MIT professor Rosalind Picard’s keynote speech at NeurIPS24 that included a racist comment about Chinese students. This type of implicit bias has no place in academia.
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Tamlin Pavelsky @globalhydro.bsky.social · 17/12/2024
This paper is incredible: one year of SWOT data gives us a much better picture of global ocean floor topography than all other data ever collected. And this will only keep getting better with more SWOT data. This one result may justify the cost of launching SWOT. www.science.org/doi/10.1126/...
science.org
Abyssal marine tectonics from the SWOT mission
The global ocean covers 71% of Earth’s surface, yet the seafloor is poorly charted compared with land, the Moon, Mars, and Venus. Traditional ocean mapping uses ship-based soundings and nadir satellit...
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UNC Dept of Earth, Marine & Environmental Sciences @unc-emes.bsky.social · 13/12/2024
Engaging posters ✅ Good conversations ✅ New connections ✅ Second-to-last AGU poster session has been a success! @iarauz.bsky.social
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Mike Dettinger @mdettinger.bsky.social · 13/12/2024
Did NOT see this coming!! Analysis of 2.9M rivers globally finds that, on avg 1984-2018, streamflow increased in headwaters & declined in downstream sections (1.7 times more upstream increases found than declines; ~4 times more downstream declines than increases). www.science.org/doi/abs/10.1...
science.org
More flow upstream and less flow downstream: The changing form and function of global rivers
We mapped daily streamflow from 1984 to 2018 in approximately 2.9 million rivers to assess recent changes to global river systems. We found that river outlets were dominated by significant decreases i...
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Mirela G. Tulbure, PhD @mirelagtulbure.bsky.social · 11/12/2024
Chao Wang and @globalhydro.bsky.social assessed the usefulness of X-band #Capella #SAR data for #flood mapping Capella data is useful for mapping floods in Salt marshes but is challenged in urban environments #AGU24
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Irene Garousi-Nejad @igarousi.bsky.social · 11/12/2024
Today at #AGU24, we'll share SWOTViz, a web-based tool that simplifies accessing and working with hydrology data from #NASA Surface Water and Ocean Topography mission (SWOT), making these datasets more accessible to researchers and the public worldwide. 10:40-11:50 am, e-Lightening, Theater 2
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UNC Dept of Earth, Marine & Environmental Sciences @unc-emes.bsky.social · 10/12/2024
We have three EMES posters today between the morning and evening sessions! Check out the breadth of work our postdocs, recent alums, and graduate students are doing in Hall B-C!
Department of Earth, Marine and Environmental Sciences
Poster Presentations
Tuesday, December 9
8:30 - 12:20
Surrogate Modeling and Constrained Optimization to Improve Estimates Snow Water Equivalent: A Comparison of Linear and Non-Linear Methods to Merge Regional Climate Model Estimates and Remote Sensing Observations (C21E-0406)
Jack Dechow
Postdoc
13:40 - 17:30
Community Science Increases Access to Water and Air Quality Data in Coastal North Carolina, USA (A23H-2066)
Dr. Haley Plaas
PhD ‘23
13:40 - 17:30
Transient incision recorded in river profiles in the Blue Mountains: landscape response to differential uplift  
(EP23B-1313)
Muhammad Sadiq
Graduate Student
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UNC Dept of Earth, Marine & Environmental Sciences @unc-emes.bsky.social · 10/12/2024
Day 2 of #AGU24 kicks off with a morning all about the #SWOT_satellite! Graduate student Kica Solomon will present at 9:35 am as part of the Surface Water and Ocean Topography satellite oral sessions, co-convened by Dr. Tamlin Pavelsky. @kica22.bsky.social @globalhydro.bsky.social @agu.org
Department of Earth, Marine and Environmental Sciences
Oral Presentations
Tuesday, December 9
8:30 - 11:50          145A
The Surface Water and Ocean Topography (SWOT) Mission: New Frontiers in Hydrology I & II Oral (H21G & H22G)
Co-convened by Dr. Tamlin Pavelsky
Professor
9:35 am          145A
SWOT Water Surface Elevation Accuracy in Herbaceous & Shrub-dominated Wetlands of Florida’s Everglades (H21G-05)
Solomon Kica
Graduate Student
14:10 - 15:40          145A
The Surface Water and Ocean Topography (SWOT) Mission: New Frontiers in Hydrology III Oral (H23V)
Co-convened by Dr. Tamlin Pavelsky
Professor
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Danyka Byrnes @danykabyrnes.bsky.social · 08/12/2024
Looking forward to a week at #AGU24 catching up on a year’s worth of science and catching up with some of my favourite scientists! Check out what we’ve got going on this week in the GLOWS lab! 🌾💧🌳🐄
Global water sustainability and eco hydrology lab at AGU

Monday
Juliane Mai
H14E-05 (Invited)
16:41 - 16:51 in Room 145 B

Tuesday
Nandita Basu GC21I-01 (Invited)
8:30 - 10:30, elightining theater 3
Nettie Wallace H31X-0905A
08:30 - 12:20, Poster Hall
Nitin Singh B31K-1425
8:30 - 12:20, Poster Hall
Kim Van Meter OS33F-06 (Invited)
15:25 - 15:40, 146 A
Nandita Basu
H44H-02
16:10 - 16:20, 143 A-C

Wednesday
Nandita Basu H31AA-0684
08:30 - 12:20, Poster Hall

Thursday
Fred Cheng H41V-0839
8:30 - 12:20, Poster Hall
Nandita Basu
H12E-02
10:30 - 10:40 in Room 103 A-B

Friday
Garima Lakhanpal GC51U-0252
8:30-12:00, Poster Hall
Danyka Byrnes GC53M-05 (Invited)
15:00 - 15:10, Salon C
Juliane Mai H54B-07
17:00 - 17:10, 145 B
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Tamlin Pavelsky @globalhydro.bsky.social · 08/12/2024
Good morning DC! Excited for #AGU24
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Kaighin McColl @kaighin.bsky.social · 03/12/2024
New paper: painting neighborhoods white is one way to offset warming from climate change. But, we show that doing this perversely causes temperatures to INCREASE in surrounding neighborhoods, due to unintended impacts on rainfall. This increases heat inequality. doi.org/10.1029/2024...
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Tamlin Pavelsky @globalhydro.bsky.social · 04/12/2024
Going to the #AGU24 Fall Meeting? Interested in new results from the SWOT satellite over oceans, rivers, lakes, and wetlands? We have you covered! here's a cheat sheet for SWOT-specific sessions, plus other presentations. Thanks to UNC grad student Marissa Hughes for putting this together. 🧪
Listing of SWOT-specific sessions at the American Geophysical Union Fall MeetingPart 1 of presentations about the SWOT Satellite at the 2024 AGU Fall MeetingPart 2 of presentations about the SWOT Satellite Mission at the 2024 AGU Fall Meeting
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Zoltán Sylvester @zzsylvester.bsky.social · 01/11/2024
‘segmenteverygrain’ is now ready to handle large images and lots of grains github.com/zsylvester/s...
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Ricochet Media @ricochetmedia.bsky.social · 04/10/2024
Feds withheld report showing contaminated water in Fort Chipewyan, say local leaders — A 2017 report found toxins above legal limits at 33 of 35 test sites, but local communities were never notified. ricochet.media/indigenous/f... #cdnpoli #Indigenous #landback
ricochet.media
Feds withheld report showing contaminated water in Fort Chipewyan, say local leaders
A 2017 report found toxins above legal limits at 33 of 35 test sites, but local communities were never notified
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Tamlin Pavelsky @globalhydro.bsky.social · 28/06/2024
I know this is not the most important topic today, but I meant to spend the day editing grad student papers. Instead, I've spent most of it reformatting documents for NSF, which I'd just reformatted last year. What is the total cost of federal agencies constantly changing required document formats?
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Tamlin Pavelsky @globalhydro.bsky.social · 26/01/2024
When you get the first major piece of writing from a relatively new graduate student, you brace yourself for anything, and then. . . it's great! <just imagine the gif>
Jeremiah Johnson nodding gif
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Tamlin Pavelsky @globalhydro.bsky.social · 03/01/2024
I'm excited to nerd out about microphysics schemes in WRF!
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Jacob Wenegrat @roguewave.bsky.social · 27/11/2023
🌊🌊🌊 TT position in Physical Oceanography 🌊🌊🌊🌊 Our department, AOSC at the University of Maryland College Park, is looking to hire an assist. professor in physical oceanography working on large-scale problems in climate, air-sea interaction, and... Please repost! ejobs.umd.edu/postings/114...
ejobs.umd.edu
Assistant Professor
The Department of Atmospheric and Oceanic Science at the University of Maryland (UMD) invites applications for a tenure-track position at the Assistant Professor level. We seek candidates with experti...
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Tamlin Pavelsky @globalhydro.bsky.social · 19/12/2023
Sunrise on the Padma in Bangladesh. A hydrologist's dream.
Tamlin in a lifejacket with the river behind.Sunrise on the Padma, boats in the foreground.
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Ryan Webb @webbhydrology.bsky.social · 12/12/2023
I am here at AGU with a limited number of HOAR (Hydrologist Of Alpine Regions) hats available. I can also mail you one if I run out of them here at AGU. $15 each.
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Tamlin Pavelsky @globalhydro.bsky.social · 11/12/2023
Grades: submitted. Next time I have to grade anything it will be 2025.
Andy in the rain after escaping from Shawshank Prison.
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Dr Georgy Falster @raindrop-herder.bsky.social · 06/12/2023
Recently in Nature Geoscience, a culmination of NINEish years of work by 40+ people, led by the indefatigable @otherrock.bsky.social Iso2k is the source of & inspiration for some of my best science & also the source of some of my favourite science people so it is WILDLY exciting to see this out
nature.com
Globally coherent water cycle response to temperature change during the past two millennia - Nature ...
Global temperature fluctuations during the last 2,000 years caused consistent changes in ocean evaporation and atmospheric moisture condensation processes, reflected in coherent water isotope signals ...
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Chris Hackney @drchrishackney.bsky.social · 05/12/2023
A little sneak peak of next week's #AGU23 poster I'll be presenting #SandRisk #SandMining ⛏️ 🌎 🛰️
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Ethan White @ethanwhite.weecology.org · 01/12/2023
We were just informed that due to a new Florida law we are no longer allowed to accept grad students or postdocs from a number of "countries of concern" including China. I've benefited from many interactions with amazing Chinese students & postdocs in my career. This is a huge loss for everyone.
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