Atmospheric CO2 measurements with a 2 μm airborne laser absorption spectrometer employing coherent detection
- PMID: 21556111
- DOI: 10.1364/AO.50.002098
Atmospheric CO2 measurements with a 2 μm airborne laser absorption spectrometer employing coherent detection
Abstract
We report airborne measurements of CO(2) column abundance conducted during two 2009 campaigns using a 2.05 μm laser absorption spectrometer. The two flight campaigns took place in the California Mojave desert and in Oklahoma. The integrated path differential absorption (IPDA) method is used for the CO(2) column mixing ratio retrievals. This instrument and the data analysis methodology provide insight into the capabilities of the IPDA method for both airborne measurements and future global-scale CO(2) measurements from low Earth orbit pertinent to the NASA Active Sensing of CO(2) Emissions over Nights, Days, and Seasons mission. The use of a favorable absorption line in the CO(2) 2 μm band allows the on-line frequency to be displaced two (surface pressure) half-widths from line center, providing high sensitivity to the lower tropospheric CO(2). The measurement repeatability and measurement precision are in good agreement with predicted estimates. We also report comparisons with airborne in situ measurements conducted during the Oklahoma campaign.
Similar articles
-
Atmospheric CO2 column measurements with an airborne intensity-modulated continuous wave 1.57 μm fiber laser lidar.Appl Opt. 2013 Apr 20;52(12):2874-92. doi: 10.1364/AO.52.002874. Appl Opt. 2013. PMID: 23669700
-
Lidar reflectance from snow at 2.05 μm wavelength as measured by the JPL Airborne Laser Absorption Spectrometer.Appl Opt. 2016 Mar 10;55(8):1978-86. doi: 10.1364/AO.55.001978. Appl Opt. 2016. PMID: 26974792
-
Modeling of intensity-modulated continuous-wave laser absorption spectrometer systems for atmospheric CO(2) column measurements.Appl Opt. 2013 Oct 10;52(29):7062-77. doi: 10.1364/AO.52.007062. Appl Opt. 2013. PMID: 24217721
-
Double-pulse 2-μm integrated path differential absorption lidar airborne validation for atmospheric carbon dioxide measurement.Appl Opt. 2016 May 20;55(15):4232-46. doi: 10.1364/AO.55.004232. Appl Opt. 2016. PMID: 27411155
-
Pulsed airborne lidar measurements of atmospheric optical depth using the Oxygen A-band at 765 nm.Appl Opt. 2013 Sep 1;52(25):6369-82. doi: 10.1364/AO.52.006369. Appl Opt. 2013. PMID: 24085100
Cited by
-
2 μm passively mode-locked thulium-doped fiber lasers with Ta2AlC-deposited tapered and side-polished fibers.Sci Rep. 2021 Oct 28;11(1):21278. doi: 10.1038/s41598-021-99928-z. Sci Rep. 2021. PMID: 34711908 Free PMC article.
-
Methane optical density measurements with an integrated path differential absorption lidar from an airborne platform.J Appl Remote Sens. 2017 Jul;11(3):034001. doi: 10.1117/1.JRS.11.034001. Epub 2017 Sep 1. J Appl Remote Sens. 2017. PMID: 29225719 Free PMC article.
LinkOut - more resources
Full Text Sources