Interferometric monitor for greenhouse gases (IMG)
Table of contents
- Introduction
- Working principle
- Sensor details
- Applications
- Sources
Physics for sensor technology
Metropolia UAS
Group B
Timo Lummukka, Vadim Amirov, Jaakko Kontkanen, Jaffry Salman
- Introduction
Growing awareness on climate change has created an increasing interest to observe concentrations of gases contributing to the warming of the climate. A specially effective way of doing this is to observe this from space, as this enables to an excellent spatial coverage of earth on the flight path of the satellite. Necessary technologies had been unlocked and thus a joint co-operative was launched to create a sensor suitable for the task.
Interferometric monitor for greenhouse gases (IMG) is a satellite born sensor based on FTIR developed in co-operation by JAROS, NASDA and NASA. IMG measured upwelling infrared radiance at fine spectral resolutions. The instrument was designed to have a very high spectral resolution (0.05 cm).The sensor will obtain very accurate spectra of of the thermal infrared radiation from the atmosphere and this data can be used deduce concentrations of greenhouse gases and water vapour.
3. Sensor details
Detection and monitoring of the vertical and spatial distribution of:
- CO2
- CH4
- O3
- Nitrogen based molecules (N2O, NO2)
- CFC
4. Applications
IMG has been deployed on atleast two occasions.
- ADEOS 1 (Advanced Earth Observing Satellite): launched in 1996 and flew in the polar orbit.
- ADEOS 2: launched in 2002
5. Sources
- http://www.sciencedirect.com/science/article/pii/S0273117799009266 (Accessed 15.4.2014)
- http://www.webpages.uidaho.edu/~vonw/pubs/WaldenEtAl_2010.pdf (Accessed 15.4.2014) (Continue here Timo)
- http://suzaku.eorc.jaxa.jp/GLI2/adeos/Project/Img.html