Andrew Sanchez Meador

Terrestrial lidar scanning provides efficient measurements of fire-caused crown scorch in longleaf pine by Jeffery B. Cannon, Nicole E. Zampieri, Andrew W. Whelan, Timothy M. Shearman, Andrew J. Sánchez Meador & J. Morgan Varner at Fire Ecology! Give it a read... link.springer.com/article/10.1...

My baby...

https://news.nau.edu/twig/

From data gaps to actionable insight — TWIG tracks wildfire treatments coast to coast.
news.nau.edu/twig/

I just grabbed the tiles that overlapped NAU property... plus I don't want to see how high the solar potential is in my back yards now that my neighbor to the west removed like 6 trees!

VOSTOK - The Voxel Octree Solar Toolkit VOSTOK is a command-line tool to compute a detailed model of incoming solar radiation distribution on a patch of land, including structures like bu...

Quick little run last night on a 37sq km area in Flagstaff using vostokR (my R wrapper for VOSTOK - doi.org/10.11588/dat...). I've got most* of the kinks worked, made it 2.5x faster, and it now works with lidR!!!! It's almost ready for release.

Looking for some shade on NAU's campus or in downtown Flagstaff? I got you covered...

Just out: A new geodatabase of fuel treatments across federal lands—published in Scientific Data.

Whether you’re mapping change or assessing risk, TWIG shows when and where treatments happened.

Grateful to be part of a team!

Paper - www.nature.com/articles/s41...
TWIG - reshapewildfire.org/twig

low severity surface fire burning through a ponderosa pine forest

The Turkeyfeather Fire in the Gila Wilderness, NM has burned as a low-severity fire over about 24,000 acres (so far). This is a continuation of a fire regime that existed for millennia before the 20th century. This 🧵reviews the fire history of the Gila, as my colleagues and I have studied it. 1/18

🔥 New study: 85% of remaining #LongleafPine habitat faces tropical storm-force winds every 6 years. We explore how #storms, #fire, insects, and salvage logging interact to shape resilience—and what managers can do about it. bit.ly/44QK3Uk Led by @nzampieri.bsky.social

Light patterns align with successful Quercus and Carya regeneration but reveal continued challenges in managing dry-mesic southern Appalachian upland hardwood forests Field experiments of gap-based silviculture have provided inconsistent evidence that these approaches are effective in regenerating shade midtolerant oaks (Quercus spp.) and hickories (Carya spp.) in ...

Light patterns align with successful Quercus and Carya regeneration but reveal continued challenges in managing dry-mesic southern Appalachian upland hardwood forests cdnsciencepub.com/doi/10.1139/...

Handheld lidar sensors can accurately measure aboveground biomass - Atkins - 2025 - Ecosphere - Wiley Online Library esajournals.onlinelibrary.wiley.com/doi/10.1002/...

Happy to see this one out too!

Eigenfeature‐enhanced deep learning: advancing tree species classification in mixed conifer forests with lidar Workflow for tree species classification using lidar data. Steps include preprocessing (normalization, noise removal, CHM creation), tree segmentation, eigenfeature extraction, and 2D CNN training/va...

Eigenfeature‐enhanced deep learning: advancing tree species classification in mixed conifer forests with lidar - Blackburn - Remote Sensing in Ecology and Conservation - Wiley Online Library zslpublications.onlinelibrary.wiley.com/doi/10.1002/...

Happy to see this out!

Got to get out and do a little PJ scanning today.

Implemented a solution for a MS student's project, so when I find time to get back to it I'll likely try and get it packaged.

Finally got the first version of my R code/wrapper working that calculates solar potential in watt hours per square meter and day, summed by pixel using vostok - github.com/3dgeo-heidel...

The allusive search for "age" from lidar continues....

Spent the morning prepping some visuals using #lidR ands #spanner - github.com/bi0m3trics/s...