This repository contains Level 0 and Level 1 data products from the campaign to collect terrestrial laser scanning (TLS) data at the NGEE-Tropics intensive research areas with the Pasoh Forest Reserve, Malaysia. Data were collected in collaboration with the Forest Research Institute Malaysia (FRIM).

At Pasoh, NGEE-T maintains two intensive study areas--Site NG and Site B. Focal trees with FloraPulse sensors were scanned in a single scan area for Site NG, and in two scan areas for Site B.

TLS Reporting Format files are based on the UAS Reporting Format, modified to be relevant for TLS data collection and processing. This is a preliminary format that has not been formally approved/integrated as an ESS-DIVE Reporting Format.

Level 0 data consists of raw scan data, and Level 1 data consists of post-processing documentation and exported point clouds:

- Level 0 data are as downloaded from the instrument before post-processing with the propriety software RiSCAN Pro, and the file names/structure are unaltered from the default *.PROJ structure so that users can reprocess data using different settings, if desired. In this structure, there is a folder for each individual scan position (ScanPos###.SCNPOS), which contains the data from the specific scan position (scan data and pose estimation files with GPS/IMU data). The "Voxels1.VPP" folder contains the voxels and planes generated/extracted from the data used for the onboard registration.

- Level 1 data includes documentation of settings used for post-processing and backup files that can be used to restore post-processed scan positions. With scan position backup data, it is possible to re-export data with different filtering or subsampling settings without spending time to re-align all scans, for example.

- Post-processing was completed following the workflow here, from the Q-ForestLab at Ghent University: https://github.com/qforestlab/riscan_registration/tree/main

Acknowledgements: Thanks to Zulkarnaen Muniran, Nur Aidiel Hakimie Mazlizam, Muhamad Khairul Etot, Asmiezal a/l Wong Choy, Hazira Md Hazif, Nurul Noor Fatiha Ahmad, and Muhammad Syamsul Nizam Yaakub (Forest Research Institute Malaysia) for field logistics and support. Thanks to Malcolm Greenlee (Riegl USA) for support regarding the *.PROJ file structure. This research was carried out at Oak Ridge National Laboratory, which is managed by the University of Tennessee-Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S. Department of Energy. KCC, EM, and AZ were supported by the Next Generation Ecosystem Experiments‐Tropics, funded by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research (DE-AC02-05CH11231).