Andri Gunnarsson
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andrigun.bsky.social
Andri Gunnarsson
@andrigun.bsky.social
Glaciers, seasonal snow, snow-ice albedo and field work among other things. Chairman of the Icelandic Glaciology Society. Hydrological research at Landsvirkjun.
The mass balance season has started. First up was Langjökull with 28 smb points, 1 met station and 3 GPS stations. Extremly nice weather. Winter snow seems to be close to normal this spring. Up next is Vatnajökull.
April 24, 2025 at 10:00 PM
Reposted by Andri Gunnarsson
Dust is a relevant but variable contributor to snow darkening & snowmelt *every year* in the headwaters of the Great Salt Lake.
The latest Snow HydRO lab research, led by PhD student Otto Lang, fills a critical gap by quantifying spatial & temporal patterns of dust on snow.

doi.org/10.1029/2024...
Two Decades of Dust Radiative Forcing on Snow Cover Across the Great Salt Lake Basin
Spatiotemporal patterns in dust on snow impacts were assessed over the MODIS record (2001–2023) in the Great Salt Lake Basin (GSLB) Dust deposition darkened snow every year, and the magnitude of ...
agupubs.onlinelibrary.wiley.com
February 19, 2025 at 5:54 PM
Reposted by Andri Gunnarsson
A look at how #Arctic sea ice responded to the recent southerly flow of excessive heat and moisture. This same event resulted in the sudden anomalous temperature spike around the North Pole...

Data is from the 3-km AWI SIC-LEADS algorithm using AMSR2 satellite.
February 9, 2025 at 4:21 PM
Reposted by Andri Gunnarsson
📊 🌡️ The January 2025 edition of the #CopernicusClimate multi-system seasonal forecast is now available.

You can find data, plots and highlights of the forecast here: climate.copernicus.eu/seasonal-for...

#C3S
January 11, 2025 at 9:37 AM
Reposted by Andri Gunnarsson
New study revisits climate impacts of an #AMOC slowdown 🌍🌊. Freshwater hosing experiments reveal the Irminger Basin as the most sensitive site, causing the largest AMOC weakening.
www.science.org/doi/10.1126/...
Revisiting climate impacts of an AMOC slowdown: dependence on freshwater locations in the North Atlantic
Freshwater input location strongly influences AMOC slowdown, with the Irminger basin having the greatest effect.
www.science.org
December 22, 2024 at 9:29 PM
Reposted by Andri Gunnarsson
Some thoughts on the use of AI/ML in climate modeling...

@realclimate.org

¡AI Caramba! www.realclimate.org/index.php/ar...
¡AI Caramba!
Rapid progress in the use of machine learning for weather and climate models is evident almost everywhere, but can we distinguish between real advances and vaporware? First off, let's define some...
www.realclimate.org
December 28, 2024 at 7:36 PM
Reposted by Andri Gunnarsson
Simulated reconstruction of December #Arctic sea ice thickness since 1901. Large interannual variability, but watch what happens in recent years...

Information about this data: doi.org/10.1175/JCLI.... Data set only available through 2010.
December 28, 2024 at 11:10 PM
First post on Bluesky, lets see how it goes.

In 2023–2024, Iceland’s major glaciers—Vatnajökull, Hofsjökull, Langjökull, Mýrdalsjökull, and Tröllaskagi—were measured for mass balance. Over 100 points collected for the main glaciers.
December 23, 2024 at 8:06 PM