My broad research interests span the field of lidar remote sensing. I like to take a systems level approach to create instruments and methods that can provide advanced scientific measurements. Topics of interest: lidar hardware development and theory, optical detection theory, greenhouse gas sensing, atmospheric radiative transfer, platform integration, geolocation, observing system simulation experiment development, forward model development, retrieval development, etc.
Current Projects
High Altitude Lidar Observatory (HALO)
NASA Langley Research Center’s modular and multi-function airborne lidar developed to measure atmospheric water vapor and methane mixing ratios and aerosol/cloud/ocean optical properties using the DIAL and HSRL techniques, respectively. The HALO instrument also serves as a testbed for new and innovative technology solutions, allowing for rapid installation and deployment for aircraft evaluation.
Atmospheric Boundary-Layer Lidar PathfindEr (ABLE)
Technology advancement and measurement simulation development for a space borne water vapor and methane DIAL instrument. This project is funded under the NASA Earth Science Technology Office’s Instrument Incubator Program.
Lidar Methodology for Methane Measurements
A brief description on how to use lidar to measure atmospheric methane and what capabilities currently exist within NASA is forthcoming.
Publications
A full list of my publication history can be found on my google scholar page.
Select Publications
“High resolution photon time-tagging lidar for atmospheric point cloud generation”
https://doi.org/10.1364/OE.26.026030
“Sensitivity Analysis of Space-Based Water Vapor Differential Absorption Lidar at 823 nm”
https://doi.org/10.3389/frsen.2024.1404877
“Evaluation of the High Altitude Lidar Observatory Methane Retrievals During the Summer 2019 ACT-America Campaign”
https://doi.org/10.5194/amt-15-4623-2022
“Differential absorption lidar measurements of water vapor by the High Altitude Lidar Observatory (HALO): retrieval framework and first results”
https://doi.org/10.5194/amt-15-605-2022
Co-Editor on the Optical Society of America’s Joint Feature Issue with Journal of the Optical Society of America A and Journal of the Optical Society of America B: Light Detection and Ranging (Lidar)
“Nonlinear target count rate estimation in single-photon lidar due to first photon bias”
https://doi.org/10.1364/OL.44.001249
rorybartongrimley.com 