Next Article in Journal
Calving Fronts of Antarctica: Mapping and Classification
Next Article in Special Issue
Illuminating the Capabilities of the Suomi National Polar-Orbiting Partnership (NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) Day/Night Band
Previous Article in Journal
Semi-Automatic Registration of Airborne and Terrestrial Laser Scanning Data Using Building Corner Matching with Boundaries as Reliability Check
Previous Article in Special Issue
Progress towards an Autonomous Field Deployable Diode-Laser-Based Differential Absorption Lidar (DIAL) for Profiling Water Vapor in the Lower Troposphere
Remote Sens. 2013, 5(12), 6284-6304; doi:10.3390/rs5126284

A New Laser Based Approach for Measuring Atmospheric Greenhouse Gases

1,* , 1
1 Exelis Geospatial Systems, 1919 Cook Rd., Fort Wayne, IN 46818, USA 2 Atmospheric and Environmental Research, Lexington, MA 02421, USA
* Author to whom correspondence should be addressed.
Received: 23 September 2013 / Revised: 12 November 2013 / Accepted: 18 November 2013 / Published: 25 November 2013
(This article belongs to the Special Issue Optical Remote Sensing of the Atmosphere)
View Full-Text   |   Download PDF [1570 KB, uploaded 19 June 2014]   |   Browse Figures


In 2012, we developed a proof-of-concept system for a new open-path laser absorption spectrometer concept for measuring atmospheric CO2. The measurement approach utilizes high-reliability all-fiber-based, continuous-wave laser technology, along with a unique all-digital lock-in amplifier method that, together, enables simultaneous transmission and reception of multiple fixed wavelengths of light. This new technique, which utilizes very little transmitted energy relative to conventional lidar systems, provides high signal-to-noise (SNR) measurements, even in the presence of a large background signal. This proof-of-concept system, tested in both a laboratory environment and a limited number of field experiments over path lengths of 680 m and 1,600 m, demonstrated SNR values >1,000 for received signals of ~18 picoWatts averaged over 60 s. A SNR of 1,000 is equivalent to a measurement precision of ±0.001 or ~0.4 ppmv. The measurement method is expected to provide new capability for automated monitoring of greenhouse gas at fixed sites, such as carbon sequestration facilities, volcanoes, the short- and long-term assessment of urban plumes, and other similar applications. In addition, this concept enables active measurements of column amounts from a geosynchronous orbit for a network of ground-based receivers/stations that would complement other current and planned space-based measurement capabilities.
Keywords: lidar; greenhouse gas; laser absorption spectroscopy lidar; greenhouse gas; laser absorption spectroscopy
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
MDPI and ACS Style

Dobler, J.; Braun, M.; Blume, N.; Zaccheo, T.S. A New Laser Based Approach for Measuring Atmospheric Greenhouse Gases. Remote Sens. 2013, 5, 6284-6304.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here


Cited By

[Return to top]
Remote Sens. EISSN 2072-4292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert