Minute Sea-Level Analysis (MISELA): a high-frequency sea-level analysis global dataset

Abstract

Abstract. Sea-level observations provide information on a variety of processes occurring over different temporal and spatial scales that may contribute to coastal flooding and hazards. However, global research on sea-level extremes is restricted to hourly datasets, which prevent the quantification and analyses of processes occurring at timescales between a few minutes and a few hours. These shorter-period processes, like seiches, meteotsunamis, infragravity and coastal waves, may even dominate in low tidal basins. Therefore, a new global 1 min sea-level dataset – MISELA (Minute Sea-Level Analysis) – has been developed, encompassing quality-checked records of nonseismic sea-level oscillations at tsunami timescales (T<2 h) obtained from 331 tide-gauge sites (https://doi.org/10.14284/456, Zemunik et al., 2021b). This paper describes data quality control procedures applied to the MISELA dataset, world and regional coverage of tide-gauge sites, and lengths of time series. The dataset is appropriate for global, regional or local research of atmospherically induced high-frequency sea-level oscillations, which should be included in the overall sea-level extremes assessments.

GESLA Version 3: A major update to the global higher‐frequency sea‐level dataset

“…While assembling GESLA-3, we became aware of a new sea-level dataset that has recently been assembled called MISELA (Minute Sea-Level Analysis) (Zemunik et al, 2021). This contains 1-minute sea-level data, at 331 tide gauges worldwide, required for studying oceanographic processes like seiches, meteotsunamis, infragravity, and coastal waves.…”

GESLA Version 3: A major update to the global higher-frequency sea-level dataset

“…While assembling GESLA-3, we became aware of a new sea-level dataset that has recently been assembled called MISELA (Minute Sea-Level Analysis) (Zemunik et al, 2021). This contains 1-minute sea-level data, at 331 tide gauges worldwide, required for studying oceanographic processes like seiches, meteotsunamis, and infragravity and coastal waves.…”

Coastal sea level monitoring in the Mediterranean and Black seas

“…The availability of the IOC-SLSMF data in the Mediterranean is largely dependent on the data providers, which normally upgrade large segments of networks at once. For example, most of the Italian sea level records have been available from December 2013, which is also the median value for the beginning of data provision of all the Mediterranean IOC-SLSMF stations (Zemunik et al, 2021b). Most of the stations from which data are available at the IOC-SLSMF database are equipped with the radar tide gauge technology; sampling rates are normally 1 min, except for Greek and Turkish sea level records that are largely available with the resolutions of 30 and 20 s.…”

“…As no global research-quality sea level data repository containing the data at a 1 min resolution has been developed yet, Zemunik et al (2021b) applied quality-check procedures to the IOC-SLSMF data and provided the Minute Sea level Analysis product (MISELA), to be used for researching highfrequency sea level phenomena. The MISELA dataset contains 331 sea level records and 2303 station years between 2004 and 2019, with a resolution of 1 min and containing only the high-frequency part of the signal (cut-off period at 2 h).…”