A portable laser spectrometer for airborne and ground-based remote sensing of geological CO2 emissions

Research output: Contribution to journalArticle

  • Authors:
  • Manuel Queisser
  • Mike Burton
  • Graham R. Allan
  • Antonio Chiarugi

Abstract

LARSS, a 24 kg, suitcase-sized, CW-laser remote-sensing
spectrometer with a ~2 km range has been developed. It
demonstrated its flexibility in measuring both
atmospheric CO2 from an airborne platform and
terrestrial emission of CO2 from a remote mud-volcano,
Bledug Kuwu, Indonesia from a ground-based sight. This
system scans the CO2 absorption line with 20 discrete
wavelengths as opposed to the typical two wavelength
online offline instrument. This multi-wavelength
approach offers an effective quality-control, bias-control
and confidence-estimate of measured CO2 concentrations
via spectral fitting. The simplicity, ruggedness and
flexibility in the design allows for easy transportation,
use on different platforms with quick setup in some of
the most challenging climatic conditions. While more
refinement is needed, the results represent a step-stone
towards widespread use of active one-sided gas remote
sensing in the Earth sciences.

Bibliographical metadata

Original languageEnglish
JournalOptics Letters
Volume42
Issue number14
Early online date21 Jun 2017
DOIs
Publication statusPublished - 2017

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