In situ measurements of methane in the troposphere and the stratosphere by the Ultra Light SpEctrometer Amulse
Methane plays an important role in the radiative balance of the Earth climate: about 20% of the manmade global warming is related to methane emissions. To contribute to the study of CH 4 trends, we have developed a compact lightweight spectrometer (2.5 kg) by combining an antimonide laser diode at 3...
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| Veröffentlicht in: | Applied physics. B, Lasers and optics Lasers and optics, 2017-12, Vol.123 (12), p.1-11, Article 281 |
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| container_title | Applied physics. B, Lasers and optics |
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| creator | Khair, Zineb Miftah El Joly, Lilian Cousin, Julien Decarpenterie, Thomas Dumelié, Nicolas Maamary, Rabih Chauvin, Nicolas Durry, Georges |
| description | Methane plays an important role in the radiative balance of the Earth climate: about 20% of the manmade global warming is related to methane emissions. To contribute to the study of CH
4
trends, we have developed a compact lightweight spectrometer (2.5 kg) by combining an antimonide laser diode at 3.24 µm with an 8 m optical multipass path cell open to the atmosphere. This laser sensor is to be operated from weather balloons to provide with regular in situ methane soundings from ground level up to ~ 25 km. In this paper, the laser sensor is described as well as the processing of the absorption spectra and the calibration of the instrument. The concentration data obtained from recent stratospheric balloon flights are reported and discussed. |
| doi_str_mv | 10.1007/s00340-017-6850-4 |
| format | Article |
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4
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4
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4
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| source | Springer Nature - Complete Springer Journals |
| subjects | Absorption spectra Applied physics Balloons Engineering Ground level Lasers Methane Optical Devices Optics Photonics Physical Chemistry Physics Physics and Astronomy Quantum Optics Troposphere |
| title | In situ measurements of methane in the troposphere and the stratosphere by the Ultra Light SpEctrometer Amulse |
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