Assessing the Altimetric Measurement from CYGNSS Data
| Autor: | Cinzia Zuffada, Valery U. Zavorotny, Paolo Cipollini, Rashmi Shah, Penina Axelrad, George A. Hajj, Bruce J. Haines, Jake Mashburn, Andrew O'Brien, Zhijin Li, Alexander Voronovich, Stephen T. Lowe |
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| Rok vydání: | 2018 |
| Předmět: |
010504 meteorology & atmospheric sciences
0211 other engineering and technologies Satellite system 02 engineering and technology Sea-surface height 01 natural sciences Wind speed Cyclone Environmental science Satellite Altimeter Tropical cyclone 021101 geological & geomatics engineering 0105 earth and related environmental sciences Remote sensing Interpolation |
| Zdroj: | IGARSS |
| DOI: | 10.1109/igarss.2018.8518239 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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