Mr Sebastian Landwehr
National Univeristy of Ireland, Galway
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Topic: Development of a Greenhouse Gas Ocean-Atmosphere Flux Sensor with MEMS-based Photoacoustic Technology. (Report)
Host: Juho Uotila, Gasera Ltd, Turku, Finland
Date of STSM: 01/11/10 - 24/12/10
STSM code: 7192
My PhD project is the application of a very sensitive and fast responding photo acoustic gas detector for ship based Eddy Covariance measurements of the CO2 flux at the ocean-atmosphere boundary. Gasera Ltd. in Turku, Finland develops the gas detector for the project. In November/December 2011 I visited Gasera in order to help with the assembly and to become familiar with the photo acoustic measurement technique and the instrument.
During the STSM I got an intensive training on the greenhouse gas detector prototype, which I am planning to use first on a ship cruise with the research vessel R/V Knorr in June/July 2011 for Eddy Covariance measurements of the air-sea CO2 flux. We could finish the major part of the assembly and test the performance of the components of the detector. I motivated some small changes to improve the suitability of the detector for Eddy Covariance measurements on a ship. We could also determine most of the sources of signal instability and partly fix them during the STSM. The remaining problems and final assembly of the instrument are the targets of a second visit in January /February 2011.