Sea Level Trends and Variability in the Adriatic Sea and Around Venice

Vignudelli, Stefano; Biasio, Francesco De; Scozzari, Andrea; Zecchetto, S.; Papa, Alvise

doi:10.1007/1345_2018_51

Cited by 7 publications

(15 citation statements)

References 14 publications

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“…Figure 6 also provide updated RSL trend estimates for the period 1993-2019 based on the Punta della Salute tidegauge data. Our estimates confirm that for the satellite altimetry period the total RSL trend from the tide gauge (5.01 ±1.75 mm/year, including subsidence) is consistent with uncertainties with some satellite estimates and the tide-gauge estimate by Vignudelli et al (2019b) over similar periods. Our estimate for the MSL trend for the same period is 2.76±1.75 mm/year, again confirming the results by Vignudelli et al (2019b).…”

Section: Recent Multidecadal Trendssupporting

confidence: 90%

“…Among the most relevant reprocessing efforts of the last years, we should mention the Sea Level Climate Change Initiative (SLCCI) of the European Space Agency, that encompassed nine satellite radar-altimetry missions over the period 1993-2015 (Legeais et al, 2018). The SLCCI product, distributed over a homogenous grid of 0.25°, contains data close to the coast, e.g., 10 km near Trieste, and was used for the assessment of coastal sea-level trends (Rocco, 2015;Vignudelli et al, 2019b).…”

Section: Altimetric Datamentioning

confidence: 99%

“…Rocco (2015) obtained trends of 4.18±0.92 mm/year (period 1993-2014) and 3.40±0.99 mm/year (period 1993-2013) for the closest grid point to the Venice tide gauge in the AVISO and SLCCI V1 products, respectively, with both estimates consistent with each other within errors. A reprocessing of the SLCCI V2 data set over the period 1993-2015 yielded a trend of 4.25±1.25 mm/year (Vignudelli et al, 2019b), further reduced to 4.03±1.27 mm/year after removing the seasonal signal (ESA CCI 2019). Explanations for the differences between trend estimates in these studies include the different time spans, especially for Fenoglio-Marc et al 2012, different methodological aspects in the spatial characterization of the study area (e.g., closest point vs. area with a certain radius), and the recurrent reprocessing and continuous improvement of the satellite radar altimetry products.…”

Section: Recent Multidecadal Trendsmentioning

confidence: 99%

“…For consistency with altimetry, the tide-gauge time series need to be corrected for seasonality and atmospheric forcing (see Sect. Vignudelli et al (2019b) provide values of 6.17±1.50 mm/year from in situ data at the Acqua Alta Platform (AAPTF), 14 km offshore the Venice coast, and +5.81±1.47 mm/year at Punta della Salute (inside the city center) during the overlapping altimetry period. After subtracting altimetry and AAPTF tide-gauge time series, the residual time series shows a trend of -2.14±0.65 mm/year.…”

Section: Recent Multidecadal Trendsmentioning

confidence: 99%

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Review article: Sea-level rise in Venice: historic and future trends

Zanchettin

Bruni

Raicich

et al. 2020

Preprint

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Abstract. The City of Venice and the surrounding lagoonal ecosystem are highly vulnerable to variations in relative sea level. In the past ~150 years, this was characterized by a secular linear trend of about 2.5 mm/year resulting from the combined contributions of vertical land movement and sea-level rise. This literature review reassesses and synthesizes the progress achieved in understanding, estimating and predicting the individual contributions to local relative sea level, with focus on the most recent publications. The current best estimate of historical sea-level rise in Venice, based on tide-gauge data after removal of subsidence effects, is 1.23 ± 0.13 mm/year (period from 1872 to 2019). Subsidence thus contributed to about half of the observed relative sea-level rise over the same period. A higher – yet more uncertain – rate of sea-level rise is observed during recent decades, estimated from tide-gauge data to be about 2.76 ± 1.75 mm/year in the period 1993–2019 for the climatic component alone. An unresolved issue is the contrast between the observational capacity of tide gauges and satellite altimetry, with the latter tool not covering the Venice Lagoon. Water mass exchanges through the Gibraltar Strait currently constitute a source of substantial uncertainty for estimating future deviations of the Mediterranean mean sea-level trend from the global-mean value. Subsidence and regional atmospheric and oceanic circulation mechanisms can deviate Venetian relative sea-level trends from the global mean values for several decades. Regional processes will likely continue to determine significant interannual and interdecadal variability of Venetian sea level with magnitude comparable to that observed in the past, as well as non-negligible differential trends. Our estimate of the likely range of mean sea-level rise in Venice by 2100 due to climate change is presently estimated between 11 and 110 centimetres. An improbable yet possible high-end scenario linked to strong ice-sheet melting yields about 170 centimetres of mean sea-level rise in Venice by 2100. Projections of natural and human induced vertical land motions are currently not available, but historical evidence demonstrates that they can produce a significant contribution to the relative sea-level rise in Venice, further increasing the hazard posed by climatically-induced sea-level changes.

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Section: Recent Multidecadal Trendssupporting

confidence: 90%

Section: Altimetric Datamentioning

confidence: 99%

Section: Recent Multidecadal Trendsmentioning

confidence: 99%

Section: Recent Multidecadal Trendsmentioning

confidence: 99%

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Review article: Sea-level rise in Venice: historic and future trends

Zanchettin

Bruni

Raicich

et al. 2020

Preprint

Self Cite

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“…Similar positive and negative rates before and after 2001 result for the (basin-average) steric component of sea level, which is correlated with Adriatic Sea level. For the northern sector of the Adriatic, rates of 4.25 ± 1.25 mm/year for the period 1993-2015 [69] and of 3.00 ± 0.53 mm/year for the period 1993-2018 [70] have been recently estimated.…”

Section: Study Areamentioning

confidence: 99%

Sea-Level Change along the Emilia-Romagna Coast from Tide Gauge and Satellite Altimetry

2020

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Coastal flooding and retreat are markedly enhanced by sea-level rise. Thus, it is crucial to determine the sea-level variation at the local scale to support coastal hazard assessment and related management policies. In this work we focus on sea-level change along the Emilia-Romagna coast, a highly urbanized, 130 km-long belt facing the northern Adriatic Sea, by analyzing data from three tide gauges (with data records in the last 25–10 years) and related closest grid points from CMEMS monthly gridded satellite altimetry. The results reveal that the rate of sea-level rise observed by altimetry is coherent along the coast (2.8 ± 0.5 mm/year) for the period 1993–2019 and that a negative acceleration of −0.3 ± 0.1 mm/year is present, in contrast with the global scale. Rates resulting from tide gauge time series analysis diverge from these values mainly as a consequence of a large and heterogeneous rate of subsidence in the region. Over the common timespan, altimetry and tide gauge data show very high correlation, although their comparison suffers from the short overlapping period between the two data sets. Nevertheless, their combined use allows assessment of the recent (last 25 years) sea-level change along the Emilia-Romagna coast and to discuss the role of different interacting processes in the determination of the local sea level.

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Will the wind associated with the Adriatic storm surges change in future climate?

Međugorac

Güttler

2020

Theor Appl Climatol

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Sea Level Trends and Variability in the Adriatic Sea and Around Venice

Cited by 7 publications

References 14 publications

Review article: Sea-level rise in Venice: historic and future trends

Review article: Sea-level rise in Venice: historic and future trends

Sea-Level Change along the Emilia-Romagna Coast from Tide Gauge and Satellite Altimetry

Will the wind associated with the Adriatic storm surges change in future climate?

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