Lmst

A poster from 2021 showing the approach I was leading in the Norwegian Nansen Legacy project - merging geophysical data collection (skied/walked surveys, point measurements) with small scale remote sensing (drone orthophotos). Connecting dots, painting in knowledge gaps.

...more in the alt text.

I'm open for consulting / permanent work on leading, teaching or doing similar things!

#ArcticFieldWork #researchLeadership #Geophysics #dronemapping #posterDesign #climate #snowscience #fedihireme

A conference poster titled "drones, probes and sleds". The left side is an aerial orthophotograph of an arctic sea ice floe with blue lines and white text overlaid. The blue line is a path surveyed on ski using a snow probe and towed electromagnetic induction sounder. A small inset photo at the bottom right (blue background) shows this process in action.

The blue line's shade and width represents combined ice + snow thickness (darker / narrower is thinner, broader/lighter is thicker).

Toward the bottom of the map some melt ponds are segmented using an OBIA approach.

The research icebreaker FF Kronprins Haakon is shown at the very bottom of the map.

On the right is a lot of text, and two plots showing distribution of snow and ice thickness along the blue line in the map. This is how the data are normally presented, so the aim is to directly contrast with the map - which (imo) gives critical information about *where* snow and ice distributions are structured and related in space.

A small inset photo (white background) shows the small drone used, launching at a different site in wind and blowing snow.

The poster is available here: https://doi.org/10.6084/m9.figshare.25853479

RE: https://mastodon.social/@theperpetuallycurious8/115730365088285838

✨ Ever wonder why fresh snow sparkles in sunlight? Individual crystal facets act as tiny mirrors. When light hits at just the right angle, these flat surfaces create specular reflection: brilliant pinpoints distinct from snow's overall whiteness. Old snow loses this sparkle as crystals round through sintering, trading mirrors for curves.

↓ The full journey through snow's optics

#SnowScience #Winter #Nature #Snow #Optics #Physics #TPC8

Snowwflake close up. These are flakes with quite a little history of melting, refreeze and later faceting. Faceting is a fascinating prossess during which the ice crystal grows by vapor deposition. This occurs in the snowpack when the air outside is well below zero for many days ina row. As a result we start to identify faces and planes on the crystals. Here the snowflakes were finally starting to round again due to a vanishing temperature gradient inside the snowpack. Also interesting to observe the air bubbles trapped inside the crystals. Not common. But most interestingly, none of the original snowflakes that fall from the sky remain. All have been going theough complete reorganization, we call snow metamorphisms.

#snow #snowscience #snowflake #macro #crystals #iphone #chartreuse #coldeporte #isere #grenoble

Black and white macro photo of snowflakes

A simple rain-to-snow ratio reveals the magic, science, and joy within winter weather. #SnowScience #WinterFacts #WeatherWonder #NatureInFocus #RainToSnow #ColdSeasonMagic
https://medium.com/@mohindroo.sanjay66/s-when-rain-turns-to-snow-why-one-inch-of-rain-can-become-10-15-inches-of-snow-1be2dda72fe3

Some fun memories. In Norway I spent a bunch of time poking around mountains on Kvaløya, practicing my snowcraft, exploring with friends and speaking with the mountains on some solo missions.

I sure miss it. And I'm so grateful I got to go there. Life has been pretty bittersweet in the few years since - however, it's always something I'll remember...

#snowscience #skiMountains #timelineCleanse #internationalMountainDay

A snowy mountain ridge in moonlight. This is Skittentinden (the dirty mountain)

Snow crystals on a grid. These are rounded grains, a good sign that the snow is bonding together. You can almost see the original snowflake structure in some of the crystals.

A mountain range in blue twilight, during the polar night. A skier is ascending a slope in the foreground

"Here, we map where snow meets the forest by computing the proportion of snowfall over forest. We used a global climate reanalysis and satellite tree cover data to derive the fraction of snowfall over forests at 0.1° resolution."

Work by University of #Utah based Cluster member McKenzie Skiles is cited in this #OpenAccess article recently published by Geophysical Research Letters.

📖🔗: https://bit.ly/3H6D8Nw

#science #research #CriticalZone #SnowScience

❄️ ICYMI: Watch Noah Molotch explain how remote sensing technology is helping forecast water availability in the Rocky Mountains. Nicely edited short video by @VOANews https://buff.ly/3w9nrzF

#SnowHydrology #SnowScience #RemoteSensing #hydrology

I've recently been interested in taking my (AST1) Avalanche Skills Training course. I've been an avid skier my whole life and want to better understand terrain, forecasting conditions, and planning for being in the backcountry.

I'm currently getting setup for touring and would like to take this course in spring 2024. Any fellow skiers have any tips, or interested in doing this with me?

#skiBC #skiing #snowscience

Innovative method measures snow grain size from #UAVs: enhancing Earth's energy budget analysis.

Add "Snow Grain Size Retrieval Algorithm Effectiveness using UAV-borne High-Resolution #Hyperspectral Observations" to your last trip through today's #AGU23 early poster sessions.

🔗🗓️ https://bit.ly/agu23121505

#CriticalZone #RemoteSensing #SnowScience

Snow Grain Size Retrieval Algorithm Effectiveness using UAV-borne High- Resolution Hyperspectral Observations

Very early season conditions here in Tahoe. Found some faceting snow in a burn hole from the Caldor fire. #crevassehoar #surfacehoar #snow #laketahoe #SnowScience #CaldorFire #california #mountains

Snow on the ground growing into a faceted form.

Cluster member Otto Lang is one of the instructors in this 2024 field school.

Details and apply: https://bit.ly/3RC6sP9

#EnvironmentalScience #Fieldwork #SnowScience #hydrology #CriticalZone

Overnight a heavy wet snow fell on top of these still drive shafts for the Nubes lift at Cerro Catedral. When they turned on the lift and the shafts began to spin, the snow stuck to the rotating shafts for at least an hour of operation before sliding off. #snow #skilift #nubes #cerrocatedral #bariloche #argentina #ski #snowboard #snownerd #SnowScience #plasticity

@kendracask Thank you for sharing these amazing photos from the field. #CriticalZone #SnowScience #ScienceCommunication

When there's so much #snow that it's getting difficult to even measure it.

Cluster member McKenzie Skiles speaks to KSL TV 5 about this season's precipitation in #Utah.

#CriticalZone #EnvironmentalScience #SnowScience

https://ksltv.com/534937/utahs-record-snow-is-so-deep-it-buried-measuring-equipment/

I have a question for the #SnowScience #AvalancheResearch community:

I'm looking for small lightweight and preferably cheap #SnowDensity samplers- that can be taken along by volunteers on lightweight expeditions.

The kind that are a cylinder with a spring scale for example.

Where would you get these from in Europe? Google is failing me...

Thanks in advance!

Great crew for the Shasta Mountain Guides Level 1 avalanche class this weekend. We found deep snow and interesting conditions on the mountain.
#MtShasta #snow #volcano #redfir #snowscience #california #avalancheterrain #backcountry

Backcountry skiers discussing slope angle.

Back home in Tahoe and finished instructing a Level 2 avalanche class with a strong crew. High danger on the last day made for interesting observations like this small slide we intentionally triggered on an innocuous test slope. #backcountry #laketahoe #mtrose #nevada #snow #avalanche #SnowScience #skiing #splitboarding

Backcountry skiers examine a small avalanche on a test slope.

Key insight from the #SnowScience course at the weekend:

> Focus on soft, coarse grained layers, especially when just above or below a harder fine grained layer, and between 20-85 cm from the surface.

Was complimented on the orderness of this profile. #SnowScience #skiing

#snowscience

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