Scale-based comparison of sea level observations in the North Atlantic from satellite altimetry and tide gauges

• Type: Article in International Conference Proceedings Book
• Date: 2007

Authors

Barbosa, SM (Author) Other; Fernandes, MJ (Author) FCUP; Silva, ME (Author) FCUP

Conference proceedings International

Title: DYNAMIC PLANET: MONITORING AND UNDERSTANDING A DYNAMIC PLANET WITH GEODETIC AND OCEANOGRAPHIC TOOLS

Pages: 63-+

IAG Symposium on Dynamic Planet

Cairns, AUSTRALIA, AUG 22-26, 2005

Indexing

ISI Web of Knowledge - 2 Citations

Scopus - 2 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-004-CYX

DOI: 10.1007/978-3-540-49350-1_10

Abstract (EN): A comparative study is carried out for sea level observations in the North Atlantic from tide gauges and satellite altimetry. Monthly tide gauge records from 12 stations in both sides of the North Atlantic from January 1993 to December 2003 and monthly time series of sea level anomalies derived from TOPEX measurements are considered. The degree of association between tide gauge and altimetry observations is analysed for different scales by computing the correlation between the sea level components resulting from a multiresolution analysis based on the maximal overlap discrete wavelet transform. A similar correlation analysis is carried out to assess the relationship between the sea level observations and climate variables: sea surface temperature, precipitation rate and wind speed. The results show that altimetry and tide gauge observations are strongly correlated, as expected, but also that the relation is scale dependent, with covariability driven by the seasonal signal for most stations. For all variables the obtained correlation patterns exhibit significant spatial variability reflecting the diversity of local conditions affecting coastal sea level.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 2