Tim Bartholomaus
@timbartholomaus.bsky.social
Glaciologist at the University of Idaho; supporter of Wrangell Mountains Center
Committed to enabling actionable projections of sea level rise for adaptation planning
http://tbartholomaus.org/
Committed to enabling actionable projections of sea level rise for adaptation planning
http://tbartholomaus.org/
A local journalist reached out to ask about regional glacier change- one of the first places I checked was maps.theia-land.fr, a really super, interactive resource, hidden within Hugonnet et al., 2021, www.nature.com/articles/s41....
June 5, 2025 at 5:40 PM
A local journalist reached out to ask about regional glacier change- one of the first places I checked was maps.theia-land.fr, a really super, interactive resource, hidden within Hugonnet et al., 2021, www.nature.com/articles/s41....
Yes- absolutely. The GCM development you reference is one of the models I have for success. See the slide below from a few years ago, in which I argue it's time to move ice sheet modeling from a passion project based in a "buddy's garage" to a professional endeavor at an NCAR-like facility
December 15, 2024 at 6:54 PM
Yes- absolutely. The GCM development you reference is one of the models I have for success. See the slide below from a few years ago, in which I argue it's time to move ice sheet modeling from a passion project based in a "buddy's garage" to a professional endeavor at an NCAR-like facility
Cool perspectives in the Hot Topics in Climate Policy at #AGU24. Neat to think about how best to affect change and communicate science.
December 12, 2024 at 8:19 PM
Cool perspectives in the Hot Topics in Climate Policy at #AGU24. Neat to think about how best to affect change and communicate science.
Super great tool now online, shared by Denis Felikson, to make it easy to compare ice sheet model output with observations of ice sheet change. #AGU24
Will be very useful for the validation and increased confidence in the next round of projections of ice sheet change
Will be very useful for the validation and increased confidence in the next round of projections of ice sheet change
December 11, 2024 at 9:45 PM
Super great tool now online, shared by Denis Felikson, to make it easy to compare ice sheet model output with observations of ice sheet change. #AGU24
Will be very useful for the validation and increased confidence in the next round of projections of ice sheet change
Will be very useful for the validation and increased confidence in the next round of projections of ice sheet change
Here's the punchline for #AGU24:
"A singular, critical mission deserves mission-focused staff"
Backup and justification at my talk tomorrow afternoon:
3 pm Tuesday
SY23F-05 The massive unmet need for applied ice sheet modeling
in Capitol/Congress of Marriott Marquis (below ground Meeting Level 4)
"A singular, critical mission deserves mission-focused staff"
Backup and justification at my talk tomorrow afternoon:
3 pm Tuesday
SY23F-05 The massive unmet need for applied ice sheet modeling
in Capitol/Congress of Marriott Marquis (below ground Meeting Level 4)
December 9, 2024 at 6:22 PM
Here's the punchline for #AGU24:
"A singular, critical mission deserves mission-focused staff"
Backup and justification at my talk tomorrow afternoon:
3 pm Tuesday
SY23F-05 The massive unmet need for applied ice sheet modeling
in Capitol/Congress of Marriott Marquis (below ground Meeting Level 4)
"A singular, critical mission deserves mission-focused staff"
Backup and justification at my talk tomorrow afternoon:
3 pm Tuesday
SY23F-05 The massive unmet need for applied ice sheet modeling
in Capitol/Congress of Marriott Marquis (below ground Meeting Level 4)
Found those spots.
Shorelines are about 600 ft above the elevation of Great Salt Lake today, which would place Salt Lake City under 400-500 ft of water
Shorelines are about 600 ft above the elevation of Great Salt Lake today, which would place Salt Lake City under 400-500 ft of water
December 8, 2024 at 1:03 AM
Found those spots.
Shorelines are about 600 ft above the elevation of Great Salt Lake today, which would place Salt Lake City under 400-500 ft of water
Shorelines are about 600 ft above the elevation of Great Salt Lake today, which would place Salt Lake City under 400-500 ft of water
I'm really excited about my #AGU24 presentation- my first in the Science and Society focus group.
It reflects my growing enthusiasm for creating systematic change in the way that glaciology can meet the needs of people living on coasts.
It reflects my growing enthusiasm for creating systematic change in the way that glaciology can meet the needs of people living on coasts.
December 8, 2024 at 12:00 AM
I'm really excited about my #AGU24 presentation- my first in the Science and Society focus group.
It reflects my growing enthusiasm for creating systematic change in the way that glaciology can meet the needs of people living on coasts.
It reflects my growing enthusiasm for creating systematic change in the way that glaciology can meet the needs of people living on coasts.
With glaciers worldwide in retreat, you don't typically see moraine building. But at Yahtse Glacier, during my PhD project, we got a great look at the process responsible for so many critical reconstructions of glacier change and paleoclimate.
Enjoy! ⚒️🧪
Enjoy! ⚒️🧪
December 6, 2024 at 12:14 AM
With glaciers worldwide in retreat, you don't typically see moraine building. But at Yahtse Glacier, during my PhD project, we got a great look at the process responsible for so many critical reconstructions of glacier change and paleoclimate.
Enjoy! ⚒️🧪
Enjoy! ⚒️🧪
The @uidaho.bsky.social College of Grad Studies reminds me that Yoram Terleth won third place, state-wide, in the 3 Minute Thesis competition last year!
Yoram, a PhD student working with me, will present his latest next week in a Thurs am talk in glacier hydrology and a Wed pm poster in enviro seis
Yoram, a PhD student working with me, will present his latest next week in a Thurs am talk in glacier hydrology and a Wed pm poster in enviro seis
December 5, 2024 at 11:49 PM
The @uidaho.bsky.social College of Grad Studies reminds me that Yoram Terleth won third place, state-wide, in the 3 Minute Thesis competition last year!
Yoram, a PhD student working with me, will present his latest next week in a Thurs am talk in glacier hydrology and a Wed pm poster in enviro seis
Yoram, a PhD student working with me, will present his latest next week in a Thurs am talk in glacier hydrology and a Wed pm poster in enviro seis
Woot! Just had a paper accepted to GRL that I think is going to make a splash. 🤠
Relatively niche model, developed for small set of glaciers, actually can simply explain variations in glacier flow near-universally.
I'm excited! Nice job Yoram Terleth, in colab with @glacierdoc.bsky.social
Relatively niche model, developed for small set of glaciers, actually can simply explain variations in glacier flow near-universally.
I'm excited! Nice job Yoram Terleth, in colab with @glacierdoc.bsky.social
November 26, 2024 at 11:10 PM
Woot! Just had a paper accepted to GRL that I think is going to make a splash. 🤠
Relatively niche model, developed for small set of glaciers, actually can simply explain variations in glacier flow near-universally.
I'm excited! Nice job Yoram Terleth, in colab with @glacierdoc.bsky.social
Relatively niche model, developed for small set of glaciers, actually can simply explain variations in glacier flow near-universally.
I'm excited! Nice job Yoram Terleth, in colab with @glacierdoc.bsky.social
Nice to see @uidaho.bsky.social represented in the windows of the @umichlaw.bsky.social library.
[Sorry for taking pictures, UM Law! It was too beautiful in there!]
[Sorry for taking pictures, UM Law! It was too beautiful in there!]
November 26, 2024 at 10:41 PM
Nice to see @uidaho.bsky.social represented in the windows of the @umichlaw.bsky.social library.
[Sorry for taking pictures, UM Law! It was too beautiful in there!]
[Sorry for taking pictures, UM Law! It was too beautiful in there!]
Congratulations to Verenis Lucas on the excellent defense of her MS thesis yesterday! Well done!
And thanks to @glacierdoc.bsky.social, many colleagues at the USGS Benchmark Glacier program, committee members, and @uidaho-ess.bsky.social for making it possible.
And thanks to @glacierdoc.bsky.social, many colleagues at the USGS Benchmark Glacier program, committee members, and @uidaho-ess.bsky.social for making it possible.
November 13, 2024 at 5:39 PM
Congratulations to Verenis Lucas on the excellent defense of her MS thesis yesterday! Well done!
And thanks to @glacierdoc.bsky.social, many colleagues at the USGS Benchmark Glacier program, committee members, and @uidaho-ess.bsky.social for making it possible.
And thanks to @glacierdoc.bsky.social, many colleagues at the USGS Benchmark Glacier program, committee members, and @uidaho-ess.bsky.social for making it possible.
However, only in hindsight did I realize I should not have been so surprised about the clear sorting of glaciers into calving styles. For example, if ice shelves also calved via serac collapse or slab capsize, then no ship's captain would ever get close, like in this photo (credit NPI)
November 6, 2024 at 8:26 PM
However, only in hindsight did I realize I should not have been so surprised about the clear sorting of glaciers into calving styles. For example, if ice shelves also calved via serac collapse or slab capsize, then no ship's captain would ever get close, like in this photo (credit NPI)
Instead, nearly all glaciers we looked at seem to have a characteristic, dominant style of calving, and these calving styles are persistent for years (although they do certainly have the potential to change).
Calving is either through very frequent events smaller than 200 m (serac collapse), ...
Calving is either through very frequent events smaller than 200 m (serac collapse), ...
November 6, 2024 at 8:17 PM
Instead, nearly all glaciers we looked at seem to have a characteristic, dominant style of calving, and these calving styles are persistent for years (although they do certainly have the potential to change).
Calving is either through very frequent events smaller than 200 m (serac collapse), ...
Calving is either through very frequent events smaller than 200 m (serac collapse), ...
New paper!
The process of iceberg calving in Alaska is different than at the largest glaciers in Greenland, which is different than that in Antarctica. We show that up to 2/3rds of the calved mass in Greenland occurs through small events agupubs.onlinelibrary.wiley.com/doi/10.1029/...
#InOtherNews
The process of iceberg calving in Alaska is different than at the largest glaciers in Greenland, which is different than that in Antarctica. We show that up to 2/3rds of the calved mass in Greenland occurs through small events agupubs.onlinelibrary.wiley.com/doi/10.1029/...
#InOtherNews
November 6, 2024 at 8:08 PM
New paper!
The process of iceberg calving in Alaska is different than at the largest glaciers in Greenland, which is different than that in Antarctica. We show that up to 2/3rds of the calved mass in Greenland occurs through small events agupubs.onlinelibrary.wiley.com/doi/10.1029/...
#InOtherNews
The process of iceberg calving in Alaska is different than at the largest glaciers in Greenland, which is different than that in Antarctica. We show that up to 2/3rds of the calved mass in Greenland occurs through small events agupubs.onlinelibrary.wiley.com/doi/10.1029/...
#InOtherNews
Always nice to see memorials to pioneering seismologists
May 25, 2024 at 2:08 PM
Always nice to see memorials to pioneering seismologists
Highest known geophysical correlation coefficients?!
Check this out:
Weighing the Greenland Ice Sheet, month by month, using only GNSS stations around the margin. Essentially as good as a complicated satellite system, at least in this application.
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Check this out:
Weighing the Greenland Ice Sheet, month by month, using only GNSS stations around the margin. Essentially as good as a complicated satellite system, at least in this application.
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
May 10, 2024 at 5:22 AM
Highest known geophysical correlation coefficients?!
Check this out:
Weighing the Greenland Ice Sheet, month by month, using only GNSS stations around the margin. Essentially as good as a complicated satellite system, at least in this application.
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Check this out:
Weighing the Greenland Ice Sheet, month by month, using only GNSS stations around the margin. Essentially as good as a complicated satellite system, at least in this application.
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
It’s a shame when you can date a photo by the look of the glaciers in it. Amiright, @iamdonovan.bsky.social?
May 9, 2024 at 12:08 AM
It’s a shame when you can date a photo by the look of the glaciers in it. Amiright, @iamdonovan.bsky.social?
From one of the most gorgeous work days I’ve ever had
May 9, 2024 at 12:04 AM
From one of the most gorgeous work days I’ve ever had
Interdisciplinary field study course in Alaska!
There are still a few spots available for this undergrad-focused 7-week summer course. It's life changing, truly.
Curriculum explores geophysical, ecological and cultural landscape processes in a gorgeous location. wrangellmountainsfieldstudies.org
There are still a few spots available for this undergrad-focused 7-week summer course. It's life changing, truly.
Curriculum explores geophysical, ecological and cultural landscape processes in a gorgeous location. wrangellmountainsfieldstudies.org
May 2, 2024 at 7:39 PM
Interdisciplinary field study course in Alaska!
There are still a few spots available for this undergrad-focused 7-week summer course. It's life changing, truly.
Curriculum explores geophysical, ecological and cultural landscape processes in a gorgeous location. wrangellmountainsfieldstudies.org
There are still a few spots available for this undergrad-focused 7-week summer course. It's life changing, truly.
Curriculum explores geophysical, ecological and cultural landscape processes in a gorgeous location. wrangellmountainsfieldstudies.org
We show that water flow through and beneath the glacier during the mid-surge Winter is MUCH more similar to quiescent summer conditions, than during quiescent winter.
Even when the surface is cold and blanketed in snow, there is a lot of high-pressure water still moving around below the ice
Even when the surface is cold and blanketed in snow, there is a lot of high-pressure water still moving around below the ice
April 29, 2024 at 8:27 PM
We show that water flow through and beneath the glacier during the mid-surge Winter is MUCH more similar to quiescent summer conditions, than during quiescent winter.
Even when the surface is cold and blanketed in snow, there is a lot of high-pressure water still moving around below the ice
Even when the surface is cold and blanketed in snow, there is a lot of high-pressure water still moving around below the ice