Assessing the altimetric measurement from CYGNSS data

Zuffada, Cinzia; Haines, Bruce; Hajj, George; Li, Zhijin; Lowe, Stephen; Shah, Rashmi; Mashburn, Jake; Axelrad, Penina; O'Brien, Andrew; Cipollini, Paolo; Zavorotny, Valery; Voronovich, Alexander. 2018 Assessing the altimetric measurement from CYGNSS data. In: IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, Valencia, Spain, 22-27 July 2018. 8292-8295.

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The Cyclone Global Navigation Satellite System (CYGNSS) mission was designed to study hurricane intensification by measuring wind speeds in tropical cyclones. However, the delay-Doppler maps (DDM) that are produced can be used to estimate the sea surface height (SSH) at the specular reflection point on the ocean surface. Proof-of-concept studies that DDMs are suitable to solve for SSH have been recently reported (Clarizia et al., 2016; Mashburn et al., 2018), based on data acquired by the demonstration satellite experiment Tech Demo Sat -1 (TDS-1) carrying a GNSS-R receiver similar to the ones onboard CYGNSS. Although the precision of each 1-sec averaged SSH is considerably lower than that of the existing satellite altimeters, by virtue of the dense coverage and frequent revisit time exhibited by the constellation of 8 microsats, the error may be smoothed down considerably by optimal interpolation (Li et al., 2016). Hence the CYGNSS dataset presents a potential opportunity to sample the tropical oceans, and investigate the sensitivity of the SSH measurements to mesoscale eddies.

Item Type: Publication - Conference Item (Paper)
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Date made live: 12 May 2019 13:42 +0 (UTC)

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