Introducing GHGSat-C1 and GHGSat-AV: New Additions to GHGSat's Remote Sensing System
Abstract
We introduce two new additions to GHGSat's greenhouse gas remote sensing system: GHGSat-C1, our next generation satellite and GHGSat-AV, a more compact, modified instrument designed for deployment on light aircraft. GHGSat-C1 is scheduled for launch in spring/summer 2019 and builds upon the flight heritage of GHGSat-D, a demonstration satellite that was launched in 2016. We describe design improvements to GHGSat-C1 and present observation system simulation experiments that indicate a significant improvement in detection performance over GHGSat-D. We will also report on the progress of GHGSat-C1 instrument construction.
The aircraft instrument, GHGSat-AV, will complement satellite-based CH4 observations by targeting industrial sites with higher spatial resolution (<1 m) and improved sensitivity (< 100 t/yr methane emission rates). The aircraft instrument is a modified version of the satellite payload that uses the same imaging Fabry-Perot (FP) measurement concept in the 1.6m spectral region. However, it differs from the satellite in several important ways: i) it is more compact and able to operate in vibrationally "noisy" environments, ii) it enjoys increased per-pixel optical signal due to an increased angular field-of-view, and iii) it incorporates a "tilted" FP design that reduces straylight and allows for optimized spectral sampling. We will present the GHGSat-AV design alongside results from observation system simulation experiments. The GHGSat-AV instrument is scheduled to be ready for test flights in spring/summer 2019. GHGSat-C1 and GHGSat-AV can be operated together as a hybrid system for customers who need high-revisit / higher-threshold monitoring by satellite complemented by low-revisit / lower-threshold surveys by aircraft. We will present a case study for such a system.- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2018
- Bibcode:
- 2018AGUFM.A43R3444G
- Keywords:
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- 0345 Pollution: urban and regional;
- ATMOSPHERIC COMPOSITION AND STRUCTUREDE: 3394 Instruments and techniques;
- ATMOSPHERIC PROCESSESDE: 0428 Carbon cycling;
- BIOGEOSCIENCESDE: 0478 Pollution: urban;
- regional and global;
- BIOGEOSCIENCES