Articles | Volume 17, issue 7
https://doi.org/10.5194/amt-17-2219-2024
https://doi.org/10.5194/amt-17-2219-2024
Research article
 | 
17 Apr 2024
Research article |  | 17 Apr 2024

Radiative closure tests of collocated hyperspectral microwave and infrared radiometers

Lei Liu, Natalia Bliankinshtein, Yi Huang, John R. Gyakum, Philip M. Gabriel, Shiqi Xu, and Mengistu Wolde

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Subject: Others (Wind, Precipitation, Temperature, etc.) | Technique: Remote Sensing | Topic: Validation and Intercomparisons
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Cited articles

Aires, F., Prigent, C., Orlandi, E., Milz, M., Eriksson, P., Crewell, S., Lin, C. C., and Kangas, V.: Microwave hyperspectral measurements for temperature and humidity atmospheric profiling from satellite: The clear-sky case, J. Geophys. Res.-Atmos., 120, 11334–11351, 2015. 
Aumann, H. H. and Strow, L.: AIRS, the first hyper-spectral infrared sounder for operational weather forecasting, in: 2001 IEEE Aerospace Conference Proceedings (Cat. No. 01TH8542), 1684, 4/1683–1684/1692, Big Sky, Montana, USA, 10–17 March 2001, IEEE, https://doi.org/10.1109/AERO.2001.931472, ISBN: 0-7803-6599-2, 2001. 
Auriacombe, O., Bliankinshtein, N., Gabriel, P., Wolde, M., Huang, Y., Embretsén, J., Krus, M., Olvhammar, S., and Angevain, J.-C.: High Spectral Resolution Airborne Microwave Sounder (HiSRAMS), in: 2022 47th International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz), Delft, Netherlands, 28 August–2 September 2022, IEEE, 1–2, https://doi.org/10.1109/IRMMW-THz50927.2022.9895768, 2022. 
Barrientos-Velasco, C., Deneke, H., Hünerbein, A., Griesche, H. J., Seifert, P., and Macke, A.: Radiative closure and cloud effects on the radiation budget based on satellite and shipborne observations during the Arctic summer research cruise, PS106, Atmos. Chem. Phys., 22, 9313–9348, https://doi.org/10.5194/acp-22-9313-2022, 2022. 
Blackwell, W. J., Bickmeier, L. J., Leslie, R. V., Pieper, M. L., Samra, J. E., Surussavadee, C., and Upham, C. A.: Hyperspectral microwave atmospheric sounding, IEEE T. Geosci. Remote, 49, 128–142, 2010. 
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Short summary
We conducted a radiance closure experiment using a unique combination of two hyperspectral radiometers, one operating in the microwave and the other in the infrared. By comparing the measurements of the two hyperspectrometers to synthetic radiance simulated from collocated atmospheric profiles, we affirmed the proper performance of the two instruments and quantified their radiometric uncertainty for atmospheric sounding applications.
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