This week’s Tea Time Talk.
This week, Gurpreet Singh will be presenting his research, developing an imaging FT spectrometer for atmospheric remote sensing. Should be a very exciting talk! Join us on Thursday, November 23th at 2:30PM in Bergeron 313. Coffee and treats will be available.
Here are more details:
Title: An Imaging Fourier Transform Spectrometer
Presenter: Gurpreet Singh
Gurpreet is an MSc student in the Department of Earth and Space Science, York University. He is working with professor Tom McElroy to develop an imaging Fourier Transform Spectrometer (iFTS) for climate observations from a space platform and to perform ground validation of the MAESTRO instrument aboard SCISAT satellite. He is a hand-on person and loves to work with optics and system architectures. He is fond of meeting new people and generally develops a good relationship in a short time. He spends most of his free time with his friends exploring various eating joints in Toronto and around. He also likes to read about global politics and advocate for sustainable development.
Abstract: The fifth assessment report (AR5) of the Intergovernmental Panel on Climate Change (IPCC) states that the warming of zonal mean surface temperature at higher latitudes exceeds the global average temperature change. This poses a great problem as the warming leads to the thawing of the permafrost in the Arctic region that acts as an envelope to trap greenhouse gases such as carbon dioxide and methane. Therefore, there is an urgent need to develop scientific instruments that can be flown in space over the Arctic to provide atmospheric information to quantify the evolution and transport of these gases. The Laboratory for Atmospheric Remote Sounding from Space (LARSS) at York University is developing an imaging Fourier transform spectrometer (IFTS) for climate observations by atmospheric sounding. The spectrometer has two individual channels, one centred at 1650 nm to measure the atmospheric column of carbon dioxide and methane, and another centred at 762 nm to measure the temperature-pressure profile by making measurements of the O2A band. A Commercial-Off-The-Shelf (COTS) modulator has been purchased from ABB Inc. of Quebec City. Interferometers are widely used in many scientific laboratories to measure concentrations of different constituents in a given sample. The performance of these instruments is highly dependent on environmental effects and various properties of the input beam such as coherence, polarity, etc. Thus, the use of such instruments to measure atmospheric concentration is complicated and challenging. The immediate goal of this project is to develop an IFTS system which can measure backscattered radiation in a laboratory environment and develop design elements that will make it operable in the space environment. Progress on the project and information concerning some of the issues listed above will be discussed.
The developments which flow from this research project will support efforts by Environment and Climate Change Canada, the Canadian Space Agency and ABB, Inc. in developing a satellite instrument.
As always, if you want to sign up for a talk, click the following link (fixed) https://docs.google.com/spreadsheets/d/1pmmxOrL7rmxwH63xrApcVEVzpFbGfxfDAWlN0uy_Q1o/edit?usp=sharing