报告题目：INVESTIGATION OF GRENNHOUSE GASES EMISSION AT THE LAND-AIR INTERFACE WITHIN VARIOUS ECOSYSTEMS USING INFRA-RED LASER HIGH RESOLUTION SPECTROSCOPY 

　　报告学者：Prof. Christophe GUIMBAUD 

　　报告时间：2014年06月09日10:00-12:00 

　　报告地点：LAPC多功能厅 

　　欢迎大家踊跃参加 

　　报告内容简介： 

　　OSUC is a new national observatory dedicated to geosciences and environmental engineering, founded from the union of 5 institutes in Orléans: LPC2E, ISTO, BRGM, INRA and ICARE.  As a result, land-air interaction studies have become a strong common topic of investigation. 

　　LPC2E have developed a portable wheel infra-red spectrometers called SPIRIT (SPectrometer Infra-Red In Situ Tropospheric) to measure gas phase mixing ratios of CH₄, N₂O and CO₂, as well as isotopic ratios ¹³C/¹²C and ¹⁸O/¹⁶O of CO₂. 

　　Flux emission of Green House Gases (GHG) from lands to atmosphere (peatlands and cultivated soils mainly) are measured to understand exchange mechanisms and feedbacks prediction on GHG emissions in response to climate change (temperature rise, drought) or in response to anthropogenic perturbations (land use, fertilization) of ecosystems. GHG emission are also measured from water plans to investigate water chemistry. Practical method based on δ¹³C/¹²C of CO₂ emissions is under study for monitoring the remediation by bio-stimulation of hydrocarbon contaminated soils.  

　　Projects linked to the OSUC network of experimental sites (peatlands, cropfields..), performances with SPIRIT instrument, and some field results, will be presented. 

　　OSUC : Observatoire des Sciences de l’Univers en Région Centre (OSUC) : 

　　ISTO :    Institut des Sciences de la Terre d'Orléans 

　　LPC2E : Laboratoire de Physique et de Chimie de l'Environnement et de l'Espace (LPC2E),   

　　BRGM : Bureau de Recherches Géologiques et Minières), the French geological survey 

　　INRA :   Institut national de la recherche agronomique 

　　ICARE : Institut de Combustion Aérothermique Réactivité et Environnement 

　　学者简介： 

　　Christophe GUIMBAUD is Professor at Orléans University, France. His research is performed at the Laboratory of Physics and Chemistry of Environment and Space (LPC2E, CNRS-Univ. Orléans). He has been working for more than 15 years in laboratory and field experiments related to atmospheric chemistry and physics. He used mass spectrometry (CIMS, GCMS, HPLC-MS) and optical absorption spectroscopy techniques to study gas phase kinetics and heterogeneous chemistry on airborne particles and to measure atmospheric species in the troposphere. His current research is related to the study of Green House Gases (GHG) emissions processes at the land air interface on various ecosystems (peatlands mainly). He is the head of the master programs related to atmospheric, space and environmental sciences at OSUC.