This resource provides bulk downloads of point cloud data from datasets hosted by OpenTopography. It is designed for advanced users seeking to download large amounts of data quickly and who have the bandwidth, expertise, and software necessary to manage the gigabytes of data available. We expect that users accessing bulk data have the ability to automate downloads from the command line via tools such as wget, curl, or a download manager such as DownThemAll
Each dataset directory contains all of the point cloud data for a given data collection and are typically organized into tiles (e.g., 1 km2 tiles) and provided in the lossless LASZip format for download efficiency. When possible, a README file in the directory describes the dataset organization and other important information. Metadata for all datasets can be accessed via the OpenTopography Metadata page and users should consult the collection survey report for additional information on data organization, file naming conventions, coordinate systems, etc.
By accessing data via OpenTopography you agree to acknowledge OpenTopography and the dataset source as specified in the dataset metadata and on OpenTopography's data acknowledgement page in publications, presentations, and other materials produced using these data.
The National Center for Airborne Laser Mapping (NCALM) conducted a leaf-on survey of the Calhoun Critical Zone Observatory (CCZO) area on July 30, 2014 (hyperspectral imaging) and August 5-6, 2014 (LiDAR). The LiDAR survey was funded by NSF award EAR-1339015; the Calhoun CZO is funded by NSF award EAR-1331846 (P.I. Daniel deB. Richter).
Hyperspectral imaging data were also collected over the study area and are available via the following links:
By accessing data via OpenTopography you agree to acknowledge OpenTopography and the dataset source in publications, presentations, and other materials produced using these data: