Michael Shahin
@laserglaciers.bsky.social
Postdoctoral researcher at UPenn | Glaciologist | Open source enthusiast | he/him
Next IGS Global Seminar: Danielle Grau (University at Buffalo) Antarctic Meltwater Alters Future Projections of Climate and Sea Level & Sunme Zhao (Stanford University) Two perspectives on small-scale topographic effects on Antarctic subglacial hydrology More info at www.igsoc.org/event/grau-a...
IGS Global Seminar: Danielle Grau & Sunme Zhao | October 7
Topic: Antarctic Meltwater Alters Future Projections of Climate and Sea Level Speaker: Danielle Grau Institution: University at Buffalo Topic: Two
igsoc.org
Excited that our new paper is out @pnas.org! We show that the observed increase in variability of yearly Greenland ice melt over recent decades is not evidence of ice sheet destabilization. Story in 🧵 www.pnas.org/doi/10.1073/...
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
pnas.org
If you've ever wondered what would happen if a response to a review was filled with really bad puns and references to Star Wars, I’ve got you covered. I just hope the reviewers rise to the occasion because I think we can do something really special here.
Brief communication: Nye was right!
Abstract. Despite decades of study, predicting crevasses penetration depths remains controversial. Nye provided one of the earliest estimates of crevasse penetration depths. Recently, a new theory, ca...
egusphere.copernicus.org
The press release for our recent JGR: Earth Surface paper. A nice description about our project and the laser scanners
University of Pennsylvania@upenn.edu · 11mo agoFor nearly a decade, @PennSAS glaciologist Leigh Stearns and collaborators have aimed a laser scanning system at Greenland’s Helheim Glacier. Their survey is reframing the understanding of how ice loss contributes to sea-level rise. Read More: https://bit.ly/47WIqGh
We have a new paper out! Work with @leighstearns.bsky.social, @laserglaciers.bsky.social, and Sid Shankar studying the potential of new ICEYE SAR satellite imagery to study the dynamic behaviour of ice mélange around the margins of the Greenland Ice Sheet. Read more here: tinyurl.com/mtc94juu
🚨 New Publication 🚨 I’m excited to share our new paper out in @jgrearthsurface.bsky.social! Read more about calving mechanisms at Helheim Glacier from two autonomous terrestrial laser scanners (ATLAS) results here doi.org/10.1029/2024...
Calving Mechanisms Inferred From Observations of Surface Depressions at Helheim Glacier, Greenland
Surface depressions on Helheim Glacier appear at a consistent location on the lee side of a subglacial ridge and have increased in frequency Observed calving episodes, regardless of calving style...
doi.org
Greenland's fjords are the gateways via which the ice sheet interacts with the open ocean. A large fraction of all the ice calved from the ice sheet melts within these regions. Kinne et al., explore how all this melt affects fjord circulation 🌊 🐻❄️ agupubs.onlinelibrary.wiley.com/doi/10.1029/...
This comes on top of the quiet discontinuation of the NSF OPP program earlier this year. We are going to lose so many talented early career scientists as a result of these short-sighted decisions.
Everyone needs to understand that dismantling NSF will have devastating long term consequences in our competitiveness and innovation in science, technology and beyond. 1/
Exclusive: NSF faces radical shake-up as officials abolish its 37 divisions
Changes seen as a response to presidential directives on what research to fund
science.org
news.stanford.edu/stories/2025... NASA Earth data + AI enable us to infer the constitutive models critical for ice dynamics. AI is useful, but no data = no discovery. Below is an example of the training data: a velocity map showing the dynamics of the Antarctic Ice Sheet. Source: #NASA.
AI reveals insights into the flow of Antarctic ice
Stanford research focused on the large-scale movements of the Antarctic ice sheet could help improve predictions about how the continent will change in the future.
news.stanford.edu
Yao Lai@chingyaolai.bsky.social · 2y agoFinally published @science.org: Can AI help yield new insights from vast amounts of Earth data? We use large-scale data and neural nets to find the constitutive laws of glacial ice, which differ from commonly assumed forms in conventional models. #ScienceResearch www.science.org/doi/10.1126/...
what a great paper! This really complicates seasonal tidewater glacier variability, which is already complicated 😵💫
Nature Geoscience@natgeosci.nature.com · 2y agoArticle: Winter subglacial meltwater detected in a Greenland Fjord @icymatters.bsky.social www.nature.com/articles/s41...
A lot of our academic colleagues go to work at NSF for a couple of years as a rotator. In the programs that have funded me, rotators have been essential to keeping those divisions going. It's hard to see how these firings won't severely diminish NSF.
WIRED@wired.com · 2y agoFirings at the NSF included permanent employees who had already completed their one-year probationary period, as well as at-will workers.
Aurora Roth and others have drafted a community letter affirming US researcher support for Greenland's self-governance and autonomy. Please consider reading and signing the letter (please use personal email if vulnerable to retaliation!) docs.google.com/forms/d/e/1F...
Letter from US Researchers in Support of Greenland's Self-Governance and Autonomy
As researchers who work in and with Kalaallit Nunaat - Greenland, we strongly condemn President Trump’s attempts to purchase Greenland on behalf of the United States. We advocate for greater U.S. inve...
docs.google.com