Photographer and writer in Alaska. Field notes on landscape, science, and a changing North. Lots of stuff here: http://lwpetersen.com/linkshttps://bsky.app/profile/leepetersen.bsky.socialhttps://bsky.app/profile/leepetersen.bsky.social/post/3mzlgtmt5rs2eAurora takes over the sky, its magenta lower edge from molecular nitrogen emission, over Fairbanks, Alaska, in early February. In my gallery here: https://photos.lwpetersen.com/Portfolio-Images/i-N5fhgMw/A #alaska #auroraborealis #nightsky #northernlights05 Nov 2026 17:55 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mzlgtmt5rs2ehttps://bsky.app/profile/leepetersen.bsky.social/post/3mziwitja2c2cThe crumbling ammonia-leaching plant at the Kennecott copper mine in Wrangell-St. Elias National Park. To the left, the debris-covered Kennicott Glacier and the flanks of Mt. Blackburn (16,390 ft/4,996 m) rise, shrouded in clouds. #alaska #hiking #nationalpark04 Nov 2026 17:57 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mziwitja2c2chttps://bsky.app/profile/leepetersen.bsky.social/post/3mzggxqh3u22oA rainy September day at McHugh Creek off the Seward Highway along Turnagain Arm. Prints and Wall Art: https://photos.lwpetersen.com/Portfolio-Images/i-xDtBtfB/ #alaska #hiking #longexposure03 Nov 2026 18:14 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mzggxqh3u22ohttps://bsky.app/profile/leepetersen.bsky.social/post/3mzdvv4rxn223Glacier cave ice often appears blue because it absorbs longer (red) wavelengths of light. Clear ice looks bluer than bubbly ice because light penetrates farther and filters out more red light. #alaska #glacier #hiking #physics02 Nov 2026 18:03 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mzdvv4rxn223https://bsky.app/profile/leepetersen.bsky.social/post/3mzbuf357mk23A lake star I saw on Ballaine Lake brought me to methane bubbles and Jupiter's moon Europa. My latest article in Field Notes from the North: https://lwpetersen.substack.com/p/methane-bubble-lake-star01 Nov 2026 22:31 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mzbuf357mk23https://bsky.app/profile/leepetersen.bsky.social/post/3mzbezxfqic2cAurora from the Granite Tors Trail in the Chena River State Recreation Area near Fairbanks, Alaska. Taken in late March. More of my aurora photography here: https://photos.lwpetersen.com/Galleries/Alaska-Photos/Aurora-Borealis #alaska #hiking #auroraborealis #northernlights01 Nov 2026 17:56 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mzbezxfqic2chttps://bsky.app/profile/leepetersen.bsky.social/post/3mz6qiy6ynk2uSea otters keeping watch from an iceberg in Columbia Bay near Valdez, Alaska. More of my wildlife photography: https://photos.lwpetersen.com/Galleries/Alaska-Photos/Wildlife #alaska #wildlife #otter #iceberg31 Oct 2026 16:43 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mz6qiy6ynk2uhttps://bsky.app/profile/leepetersen.bsky.social/post/3myzqsmu7rs2pAerial photo of the Loket, a large tributary to the Black Rapids Glacier in the eastern Alaska Range. More about the Black Rapids Glacier: https://www.lwpetersen.com/alaska-information/black-rapids-glacier/ #alaska #glacier #aerial #mountains29 Oct 2026 17:05 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3myzqsmu7rs2phttps://bsky.app/profile/leepetersen.bsky.social/post/3myx4w33aas2xAurora over the Chena River Valley, taken from Angel Rocks to the Chena Hot Springs Trail in mid-March. More in my Aurora Gallery: https://photos.lwpetersen.com/Galleries/Alaska-Photos/Aurora-Borealis #alaska #auroraborealis #hiking #northernlights28 Oct 2026 16:04 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3myx4w33aas2xhttps://bsky.app/profile/leepetersen.bsky.social/post/3myunlir3t22qAurora expanding and crawling across the sky. Fairbanks, Alaska. In my Aurora Borealis Gallery here: https://photos.lwpetersen.com/Galleries/Alaska-Photos/Aurora-Borealis/i-GvvSck8/A #alaska #auroraborealis #northernlights #fairbanks27 Oct 2026 16:24 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3myunlir3t22qhttps://bsky.app/profile/leepetersen.bsky.social/post/3mys42lyy4s27Precarious boulder in front of the Gabriel Icefall on the Gulkana Glacier, Alaska Range. More photos and story on my Field Notes: https://lwpetersen.substack.com/p/snow-glacier-caves-and-bears #alaska #hiking #glacier26 Oct 2026 16:05 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mys42lyy4s27https://bsky.app/profile/leepetersen.bsky.social/post/3myq6pp5jw22qArctic starflower (Lysimachia europaea) at Anchor Point, Alaska, in late June 2026. Info in my Alaska Wildflower Guide: https://www.lwpetersen.com/alaska-wildflowers/lysimachia-europaea-arctic-starflower/ #alaska #wildflowers #bloomscrolling25 Oct 2026 21:48 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3myq6pp5jw22qhttps://bsky.app/profile/leepetersen.bsky.social/post/3mykgom7i722ySeracs stand like mountains of ice in the Gabriel Icefall on the Gulkana Glacier in the Alaska Range. More from the icefall in my Field Notes: lwpetersen.substack.com/p/gulkana-ice #alaska #hiking #glacier23 Oct 2026 14:54 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mykgom7i722yhttps://bsky.app/profile/leepetersen.bsky.social/post/3mub75pw7k22vMy 2027 Alaska Wall Calendar is done and ready for ordering. Check out the stories behind all the photos or order the calendar here: https://lwpetersen.substack.com/p/2027-alaska-wall-calendar #alaska #glacier #wildlife #landscape #hiking30 Aug 2026 01:05 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mub75pw7k22vhttps://bsky.app/profile/leepetersen.bsky.social/post/3myi3sfihfs2qAurora over snow-covered spruce in Fairbanks in January 2015, during a nearly week-long stretch of strong aurora every night. Almost 12 years later, it's still one of my favorite photos. More of my best aurora photos, prints, and wall art are available: https://photos.lwpetersen.com/Galleries/Alaska-Photos/Aurora-Borealis22 Oct 2026 16:34 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3myi3sfihfs2qhttps://bsky.app/profile/leepetersen.bsky.social/post/3myffzpzzyc2aCotton candy sky over a spruce forest in Fairbanks at sunset. #alaska #sunset #borealforest #winter21 Oct 2026 14:59 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3myffzpzzyc2ahttps://bsky.app/profile/leepetersen.bsky.social/post/3myd2e4t44s2xSide view of eightpetal mountain avens, Dryas octopetala, taken in mid-June on Murphy Dome, Fairbanks, Alaska. Info in my Alaska Wildflower Guide: https://www.lwpetersen.com/alaska-wildflowers/mountain-avens-dryas-octopetala/ #alaska #summer #wildflowers #bloomscrolling20 Oct 2026 16:25 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3myd2e4t44s2xhttps://bsky.app/profile/leepetersen.bsky.social/post/3myajcyvnnk2bSouth arm of the Worthington Glacier in the Chugach Mountains, taken at the edge of a pond near the glacier terminus. The top photo was taken in 2011, and the bottom photo in 2018. #alaska #climatechange #glacier19 Oct 2026 16:15 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3myajcyvnnk2bhttps://bsky.app/profile/leepetersen.bsky.social/post/3my75ioqzms2zMethane bubble lake star formation in Ballaine Lake this afternoon. These form when the ice is thin enough and a thin layer of snow sits on top of it, weighing down the ice and putting pressure on the water beneath it.19 Oct 2026 03:11 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3my75ioqzms2zhttps://bsky.app/profile/leepetersen.bsky.social/post/3my6mm7fx2k2aNew series: Field Notes from a Changing Cryosphere Photos and science from Alaska's glaciers: how crevasses, moulins, and ice caves form, how they change, and repeated photos that show it. More soon. Subscribe to support it: https://lwpetersen.substack.com/p/field-notes-from-a-changing-cryosphere #alaska #climatechange18 Oct 2026 22:08 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3my6mm7fx2k2ahttps://bsky.app/profile/leepetersen.bsky.social/post/3my5xxe5sxs2sSphagnum Brownie (Hypholoma elongatum), taken in early September in Fairbanks, Alaska. More fungi from this fall: https://lwpetersen.substack.com/p/barely-taller-than-the-moss #alaska #macro #mushroom #fungi18 Oct 2026 15:59 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3my5xxe5sxs2shttps://bsky.app/profile/leepetersen.bsky.social/post/3my3mx7jves2zA lone gull on a blue and white iceberg drifting in Columbia Bay, near Valdez, Alaska. In my Glaciers and Icebergs Gallery: https://photos.lwpetersen.com/Galleries/Alaska-Photos/Glaciers #alaska #blueice #iceberg #valdez17 Oct 2026 17:36 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3my3mx7jves2zhttps://bsky.app/profile/leepetersen.bsky.social/post/3mxwhvcym6c2nBlue ice exposed in fresh snow where a meltwater stream has cut a deep channel into the Gulkana Glacier. Phelan Creek, originating at the Gulkana terminus, trails off in the distance. Story and photos in my Field Notes: https://lwpetersen.substack.com/p/snow-glacier-caves-and-bears #alaska #hiking #glacier15 Oct 2026 16:23 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mxwhvcym6c2nhttps://bsky.app/profile/leepetersen.bsky.social/post/3mxujdkf2h226Aurora, blue glacier ice, the first wildflowers after breakup. My 2027 Alaska wall calendar is out now! Every calendar sold goes directly into what I create, from vehicle costs to website hosting, and keeps the writing and photography coming to you. https://lwpetersen.substack.com/p/2027-alaska-wall-calendar14 Oct 2026 21:43 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mxujdkf2h226https://bsky.app/profile/leepetersen.bsky.social/post/3mxu4wit6b22hAurora in the moonlight in early February in Fairbanks, Alaska. https://photos.lwpetersen.com/Galleries/Alaska-Photos/Aurora-Borealis #alaska #fairbanks #auroraborealis14 Oct 2026 18:01 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mxu4wit6b22hhttps://bsky.app/profile/leepetersen.bsky.social/post/3mxrdohzjqk2nRidges and mountains over College Glacier in the eastern Alaska Range. Trip story and photos in my Field Notes: https://lwpetersen.substack.com/p/weekend-in-the-deltas #alaska #glacier #hiking13 Oct 2026 15:24 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mxrdohzjqk2nhttps://bsky.app/profile/leepetersen.bsky.social/post/3mxowbpnndc2dSunset over Cook Inlet from Anchor Point, Alaska, in June. Mt. Iliamna on the left. More photos and story from the trip on my Field Notes: https://lwpetersen.substack.com/p/homer-sunsets-eagles-and-flowers #alaska #sunset #beach12 Oct 2026 16:19 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mxowbpnndc2dhttps://bsky.app/profile/leepetersen.bsky.social/post/3mxmgcye7uk2xAurora reflecting over Ballaine Lake in Fairbanks, Alaska, in late September. Sixteen years of shooting the northern lights in my Aurora Gallery: https://photos.lwpetersen.com/Galleries/Alaska-Photos/Aurora-Borealis #alaska #auroraborealis #northernlights #reflection11 Oct 2026 16:28 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mxmgcye7uk2xhttps://bsky.app/profile/leepetersen.bsky.social/post/3mxhbojm2bk2iSunlight hitting the aspen leaves. Taken in mid-September in Fairbanks. photos.lwpetersen.com #alaska #fall #fallcolors09 Oct 2026 15:22 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mxhbojm2bk2ihttps://bsky.app/profile/leepetersen.bsky.social/post/3mxcfw46eec22Aurora corona over the Goldstream Valley in Fairbanks, taken in January. https://photos.lwpetersen.com/Galleries/Alaska-Photos/Aurora-Borealis #alaska #auroraborealis #northernlights #fairbanks07 Oct 2026 16:54 +0000at://did:plc:deoucodogz7vcbtceb7xwqlc/app.bsky.feed.post/3mxcfw46eec22