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Université d'Orléans |  |
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Université d'Orléans | |
| HAL: insu-00595203, version 1 |
| DOI: 10.1088/0957-0233/22/7/075601 |
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| Measurement Science & Technology 22, 7 (2011) 1-17 |
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| A portable infrared laser spectrometer for flux measurements of trace gases at the geosphere-atmosphere interface |
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| Christophe Guimbaud 1Valery Catoire 1 |
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| (2011) |
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| A portable infrared laser absorption spectrometer named SPIRIT (SPectrom'etre Infra-Rouge In situ Troposph'erique) has been set up for the simultaneous flux measurements of trace gases at the geosphere-atmosphere interface. It uses a continuous wave distributed feedback room temperature quantum cascade laser and a patented new optical multi-pass cell. The aim of SPIRIT field studies is to get a better understanding of land and water bodies to atmosphere exchange mechanisms of greenhouse gases (GHG). The analytical procedures to derive concentrations and fluxes are described, as well as the performances of the instrument under field conditions. The ability of SPIRIT to assess space and time dependence emissions of two GHG--nitrous oxide (N2O) and methane (CH4)--for different types of ecosystems is demonstrated through in situ measurements on peatland, on fertilized soil, and on water body systems. The objectives of these investigations and preliminary significant results are reported. |
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| 1: | Laboratoire de physique et chimie de l'environnement (LPCE) |
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CNRS : UMR6115 – INSU – Université d'Orléans |
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| 2: | Institut des Sciences de la Terre d'Orléans (ISTO) |
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Université d'Orléans – CNRS : UMR6113 – Université François Rabelais - Tours – INSU |
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| 3: | INRA - Unité Science du Sol |
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Institut national de la recherche agronomique (INRA) |
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| subject | : | Sciences of the Universe/Continental interfaces, environment Environmental Sciences/Global Changes |
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| infrared spectroscopy – quantum cascade lasers – SPIRIT – CH4 – N2O – flux measurements – chamber method – peatlands – water bodies – fertilized soils |
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| insu-00595203, version 1 | |
| http://hal-insu.archives-ouvertes.fr/insu-00595203 | |
| oai:hal-insu.archives-ouvertes.fr:insu-00595203 | |
| From: Nathalie Pothier | |
| Submitted on: Friday, 24 June 2011 16:35:48 | |
| Updated on: Monday, 5 December 2011 16:16:34 | |
