2020年1月
Sea Ice Observation with Oceanographic HF Radar
IEEE Transactions on Geoscience and Remote Sensing
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- ,
- 巻
- 58
- 号
- 1
- 開始ページ
- 378
- 終了ページ
- 390
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1109/TGRS.2019.2936576
© 1980-2012 IEEE. High-frequency (HF) ocean radar has the potential to observe sea ice, but this application has not been thoroughly investigated. In this article, we explore sea ice observation with HF radar (HFR) and develop a corresponding signal processing procedure. We derived sea ice radial velocities from raw HFR data and determined angular positions using the MUltiple SIgnal Classification (MUSIC) algorithm. Sea ice velocities were evaluated by comparison with measurements from moored acoustic Doppler current profilers (ADCPs) and a drifting buoy. The root-mean-square (rms) differences between the sea ice velocities obtained by HFR and the ADCPs decreased with increasing radar signal-to-noise ratio (SNR), implying that a high SNR was associated with accurate measurement of sea ice velocity. These results agree with previous validations of HFR ocean current observations. The sea ice pattern mapped by HFR is consistent with the simultaneous C-band microwave radar observations. In particular, the HFR captured the approach of the sea ice edge toward the coast. Sharp attenuation of the HF signal over high concentration sea ice resulted in missing and/or low-SNR data at ranges beyond the front edge of pack ice, in qualitative agreement with model estimates of attenuation.
- リンク情報
- ID情報
-
- DOI : 10.1109/TGRS.2019.2936576
- ISSN : 0196-2892
- eISSN : 1558-0644
- SCOPUS ID : 85078038915