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| Battaglia, Alessandro; Mroz, Kamil; Watters, Daniel; Ardhuin, Fabrice. |
| Attenuation from clouds and precipitation hinders the use of Ka-band in SARs, radar altimeters and in satellite link communications. The NASA-JAXA Global Precipitation Measurement (GPM) mission, with its core satellite payload including a dual-frequency (13.6 and 35.5 GHz) radar and a multifrequency passive microwave radiometer, offers an unprecedented opportunity for better quantifying such attenuation effects. Based on four years of GPM products, this article presents a global climatology of Ka-band attenuation caused by clouds and precipitation and analyses the impact of the precipitation diurnal cycle. As expected, regions of high attenuation mirror precipitation patterns. Clouds and precipitation cause two-way attenuation at 35.5 GHz in excess of 3 dB... |
| Tipo: Text |
Palavras-chave: Attenuation; Cloud and precipitation; Ka-band; Radar. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00600/71196/69562.pdf |
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