气候变化领域集成服务门户(CCPortal): Assessment of near-shore currents from CryoSat-2 satellite in the Gulf of Cádiz using HF radar-derived current observations

CCPortal

DOI	10.1016/j.rse.2021.112310
	Assessment of near-shore currents from CryoSat-2 satellite in the Gulf of Cádiz using HF radar-derived current observations
	Mulero-Martínez R.; Gómez-Enri J.; Mañanes R.; Bruno M.
发表日期	2021
ISSN	00344257
卷号	256
英文摘要	This study evaluated the possibility of studying mesoscale surface circulation in coastal areas, as is the Gulf of Cádiz, Spain, using high-resolution altimetry data (20-Hz of posting rate) along with the use of wind and bottom friction ageostrophic corrections. Absolute cross-track surface zonal current velocities, derived from filtered along-track CryoSat-2 SIRAL-SARM Absolute Dynamic Topography (ADT) measurements, are compared with high-frequency radar (HFR) data in the coastal area of the Gulf of Cádiz. The filter strategy followed in this study for the altimetry data is dependent on the HFR measurements for each track. Absolute surface geostrophic velocities obtained from 20-Hz altimetry data agree well HFR further than 25 km from the coast. Close to land ([3–25] km) the ageostrophic component of the surface current (due to the wind drag and the bottom friction) needs to be considered in the altimeter data. On average, the correlation between altimetry and HFR improved from 0.61 (no correction) to 0.72 (correcting these effects). The root mean square error (RMSE) lowered from 12.54 cm·s−1 to 7.35 cm·s−1. Furthermore, it has also been demonstrated that corrected altimeter measurements are useful for the study of dynamics and patterns of coastal areas. © 2021 Elsevier Inc.
英文关键词	Altimetry; Coastal areas; CryoSat-2; HF radar; Surface circulation
语种	英语
scopus关键词	Coastal zones; Friction; Mean square error; Meteorological instruments; Radar; Topography; Absolute dynamic topography; Altimeter measurements; Bottom friction; High frequency radar; Nearshore currents; Root mean square errors; Surface circulation; Surface current; Radar measurement; assessment method; bottom friction; coastal circulation; CryoSat; mesoscale eddy; nearshore environment; oceanic current; radar altimetry; satellite altimetry; satellite data; Atlantic Ocean; Gulf of Cadiz; Spain
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178945
作者单位	Applied Physics Department, University of Cádiz, Puerto Real, Cádiz, Spain
推荐引用方式 GB/T 7714	Mulero-Martínez R.,Gómez-Enri J.,Mañanes R.,et al. Assessment of near-shore currents from CryoSat-2 satellite in the Gulf of Cádiz using HF radar-derived current observations[J],2021,256.
APA	Mulero-Martínez R.,Gómez-Enri J.,Mañanes R.,&Bruno M..(2021).Assessment of near-shore currents from CryoSat-2 satellite in the Gulf of Cádiz using HF radar-derived current observations.Remote Sensing of Environment,256.
MLA	Mulero-Martínez R.,et al."Assessment of near-shore currents from CryoSat-2 satellite in the Gulf of Cádiz using HF radar-derived current observations".Remote Sensing of Environment 256(2021).