Does anyone know of a source of processed LIDAR data that shows heights/elevations of the understory and of the tree-tops at around 1 meter horizontal resolution? I'm also looking for density maps1 for the understory (ideally 0 to 2 meters AGL). So far I've only been able to find bare earth DEMs for the area I'm working in (New York State, USA).
Here's the data I've found so far:
- New York State LIDAR point clouds
- New York State LIDAR-derived bare-earth 1m DEMs
- LIDAR point clouds (United States) (search for Elevation Source Data (3DEP) - Lidar, IfSAR)
1 e.g. returns per square meter less than 2 meters above ground level
Something like this (B & C) is what I'm looking for: Credit: EROS Fire Science Team, Earth Resources Observation and Science Center. Public domain. https://www.usgs.gov/media/images/understory-eros-lidar