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Development of a submillimeter/far-infrared radiometer for cirrus measurements

Hayton, Darren, Ade, Peter A. R., Lee, Clare and Evan, K. Franklin 2004. Development of a submillimeter/far-infrared radiometer for cirrus measurements. Presented at: Remote Sensing of Clouds and the Atmosphere VIII, Barcelona, Spain, 9-12 September 2003. Published in: Schaefer, K., Comeron, A., Carleer, M. R. and Picard, R. H. eds. Remote Sensing of Clouds and the Atmosphere VIII (Proceedings Volume). Proceedings of the SPIE , vol. 5235. Bellingham, WA: SPIE, pp. 586-594. 10.1117/12.530044

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We introduce a low cost, lightweight and compact polarisation sensitive radiometer for the measurement of Cirrus clouds in the submilimeter and far-infrared region (10-50 cm-1). It is widely recognised that enhanced global measurements of cirrus properties are essential to the development of General Circulation and Climate Prediction Models (GCMs) since cirrus clouds have a strong effect on the Earths Global Radiation Budget. We introduce a project currently under development in Cardiff, to design and build a novel instrument suitable for aircraft deployment in order to measure Ice Water Path (IWP) along with cirrus particle size and shape. The radiometer will capitalise on the on going measurements of the NASA led, Fourier Transform interferometer based, Far-Infrared Sensor for Cirrus (FIRSC) instrument for which Cardiff has been closely associated. Data from FIRSC campaigns is being used to select optimum radiometer channels that exhibit good sensitivity to specific cirrus. This new multi-channel radiometer will however have some key advantages over similar spectroscopic instruments for example: portability, increased optical efficiency, a multi-angle field of view and a reduced integration period leading to an improved spatial resolution. The radiometer will benefit from the application of state-of-the-art submm/FIR polariser and solid filter technology currently being developed in Cardiff.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: SPIE
ISBN: 9780819451187
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Last Modified: 04 Jun 2017 04:28

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