Year: 2025
Type: report
Abstract: There is a critical need for the ability to detect, quantify, and attribute sources and sinks of greenhouse gases (GHGs) with high temporal and spatial resolution. Current methods are typically based on continuously operating near-surface point sensors or intermittent aerial/satellite observations. Dual optical frequency comb spectroscopy (“dual-comb spectroscopy”; DCS) is a laser-based technique that can bridge this sensing gap by providing high-precision, high-accuracy, and high-temporal-resolution detection and quantification of trace gases over kilometer-length scales, connecting local and regional observations. A single DCS system can also provide spatial resolution for source/sink attribution with the addition of a few minor optical elements, enabling cross-validation of other observations (e.g., Total Carbon Column Observing Network [TCCON], Orbiting Carbon Observatory [OCO-2/3], Greenhouse Gases Observing Satellite [GOSAT-1/2][).
DOI: 10.2172/2572302
Authors: Peter Schwindt, Allie Christensen, Ian Coddington, Kevin Cossel, Dennis De Smet, Darielle Dexheimer, Roger Ding, James Kasic, Casey Longbottom, Brent Peterson, Carlos Ruiz, Junji Urayama, Aaron Van Tassle
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
SDG: Climate action
Open Access status: gold
OpenAlex ID: W4412970563