Estimation of regional departures from global-average sea-level rise around New Zealand from AOGCM simulations

2013 ◽  
Vol 33 ◽  
pp. 2 ◽  
Author(s):  
Ackerley ◽  
Bell ◽  
Mullan ◽  
McMillan
Keyword(s):  
New Zealand ◽  
Sea Level Rise ◽  
Sea Level ◽  
Global Average

scholarly journals Recent sea level rise on Ireland's east coast based on multiple tide gauge analysis

2020 ◽  
Author(s):  
Amin Shoari Nejad ◽  
Andrew C. Parnell ◽  
Alice Greene ◽  
Brian P. Kelleher ◽  
Gerard McCarthy
Keyword(s):  
Time Series ◽  
Sea Level Rise ◽  
Sea Level ◽  
Continuous Time ◽  
East Coast ◽  
Tide Gauge ◽  
Tide Gauges ◽  
Missing Value ◽  
Global Average ◽  
Good Agreement

Abstract. We analysed multiple tide gauges from the east coast of Ireland over the period 1938–2018. We validated the different time series against each other and performed a missing value imputation exercise, which enabled us to produce a homogenised record. The recordings of all tide gauges were found to be in good agreement between 2003–2015, though this was markedly less so from 2016 to the present. We estimate the sea level rise in Dublin port for this period at 10 mm yr−1. The rate over the longer period of 1938–2015 was 1.67 mm yr−1 which is in good agreement with the global average. We found that the rate of sea level rise in the longer term record is cyclic with some extreme upward and downward trends. However, starting around 1980, Dublin has seen significantly higher rates that have been always positive since 1996, and this is mirrored in the surrounding gauges. Furthermore, our analysis indicates an increase in sea level variability since 1980. Both decadal rates and continuous time rates are calculated and provided with uncertainties in this paper.

A foraminiferal proxy record of 20th century sea-level rise in the Manukau Harbour, New Zealand

2012 ◽  
Vol 63 (4) ◽  
pp. 370 ◽  
Author(s):  
Hugh R. Grenfell ◽  
Bruce W. Hayward ◽  
Ritsuo Nomura ◽  
Ashwaq T. Sabaa
Keyword(s):  
New Zealand ◽  
Salt Marsh ◽  
Sea Level Rise ◽  
Sea Level ◽  
20Th Century ◽  
Tide Gauge ◽  
Sediment Accumulation ◽  
Proxy Record ◽  
Tide Gauge Record ◽  
Tidal Salt Marsh

The present study aimed to extract a sea-level history from northern New Zealand salt-marsh sediments using a foraminiferal proxy, and to extend beyond the longest nearby tide-gauge record. Transects through high-tidal salt marsh at Puhinui, Manukau Harbour, Auckland, New Zealand, indicate a zonation of dominant foraminifera in the following order (with increasing elevation): Ammonia spp.–Elphidium excavatum, Ammotium fragile, Miliammina fusca, Haplophragmoides wilberti–Trochammina inflata, Trochamminita salsa–Miliammina obliqua. The transect sample faunas are used as a training set to generate a transfer function for estimating past tidal elevations in two short cores nearby. Heavy metal, 210Pb and 137Cs isotope analyses provide age models that indicate 35 cm of sediment accumulation since ~1890 AD. The first proxy-based 20th century rates of sea-level rise from New Zealand’s North Island at 0.28 ± 0.05 cm year–1 and 0.33 ± 0.07 cm year–1 are estimated. These are faster than the nearby Auckland tide gauge for the same interval (0.17 ± 0.1 cm year–1), but comparable to a similar proxy record from southern New Zealand (0.28 ± 0.05 cm year–1) and to satellite-based observations of global sea-level rise since 1993 (0.31 ± 0.07 cm year–1).

scholarly journals Preparing for Sea-Level Rise through Adaptive Managed Retreat of a New Zealand Stormwater and Wastewater Network

2020 ◽  
Vol 5 (11) ◽  
pp. 92 ◽  
Author(s):  
Rick Kool ◽  
Judy Lawrence ◽  
Martin Drews ◽  
Robert Bell
Keyword(s):  
Climate Change ◽  
Land Use ◽  
New Zealand ◽  
Sea Level Rise ◽  
Sea Level ◽  
Local Governments ◽  
Land Use Changes ◽  
Adaptation Option ◽  
Levels Of Service ◽  
Over Time

Sea-level rise increasingly affects low-lying and exposed coastal communities due to climate change. These communities rely upon the delivery of stormwater and wastewater services which are often co-located underground in coastal areas. Due to sea-level rise and associated compounding climate-related hazards, managing these networks will progressively challenge local governments as climate change advances. Thus, responsible agencies must reconcile maintaining Levels of Service as the impacts of climate change worsen over the coming decades and beyond. A critical question is whether such networks can continue to be adapted/protected over time to retain Levels of Service, or whether eventual retreat may be the only viable adaptation option? If so, at what performance threshold? In this paper, we explore these questions for stormwater and wastewater, using a dynamic adaptive pathway planning (DAPP) approach designed to address thresholds and increasing risk over time. Involving key local stakeholders, we here use DAPP to identify thresholds for stormwater and wastewater services and retreat options, and for developing a comprehensive and area-specific retreat strategy comprising pathway portfolios, retreat phases, potential land use changes, and for exploring pathway conflicts and synergies. The result is a prototype for an area near Wellington, New Zealand, where a managed retreat of water infrastructure is being considered at some future juncture. Dynamic adaptive strategies for managed retreats can help to reduce future disruption from coastal flooding, signal land use changes early, inform maintenance, and allow for gradual budget adjustments by the agencies that can manage expenditure over time. We present this stepwise process in a pathway form that can be communicated spatially and visually, thereby making a retreat a more manageable, sequenced, adaptation option for water agencies, and the communities they serve.

scholarly journals A Multi-Disciplinary Review of Current Sea-Level Rise Research in Florida

EDIS ◽  
2013 ◽  
Vol 2013 (2) ◽  
Author(s):  
Anna Cathey Linhoss ◽  
Lisa Gardner Chambers ◽  
Kevin Wozniak ◽  
Tom Ankersen
Keyword(s):  
Population Density ◽  
Sea Level Rise ◽  
Sea Level ◽  
The State ◽  
Public Attention ◽  
Global Average ◽  
Coastal Population

Sea-level rise is an issue of paramount importance for the state of Florida due to its lengthy coastline, low relief, high coastal population density, ecologically and economically vital beaches, estuaries, and wetlands, and porous limestone geology. The rate of sea-level rise in Florida generally follows the global average (~3 mm per year) and is slowly gaining public attention as a significant threat to the natural and socioeconomic future of the state. This 18-page multi-disciplinary review provides an annotated bibliographic summary of current peer-reviewed literature regarding sea-level rise in Florida. Written by Anna Cathey Linhoss, Lisa Gardner Chambers, Kevin Wozniak, and Tom Ankersen, and published by the UF Department of Sea Grant, February 2013.  http://edis.ifas.ufl.edu/sg125

scholarly journals Public understanding of climate change-related sea-level rise

2021 ◽  
Author(s):  
Rebecca Priestley ◽  
Zoë Heine ◽  
Taciano L Milfont
Keyword(s):  
Climate Change ◽  
New Zealand ◽  
Sea Level Rise ◽  
Sea Level ◽  
Public Understanding ◽  
Mitigation Measures ◽  
Causal Mechanism ◽  
The Public ◽  
Scientific Consensus ◽  
Adaptation And Mitigation

Sea-level rise resulting from climate change is impacting coasts around the planet. There is strong scientific consensus about the amount of sea-level rise to 2050 (0.24–0.32 m) and a range of projections to 2100, which vary depending on the approach used and the mitigation measures taken to reduce carbon emissions. Despite this strong scientific consensus regarding the reality of climate change-related sea-level rise, and the associated need to engage publics in adaptation and mitigation efforts, there is a lack of empirical evidence regarding people’s understanding of the issue. Here we investigate public understanding of the amount, rate and causes of sea-level rise. Data from a representative sample of New Zealand adults showed a suprising tendency for the public to overestimate the scientifically plausible amount of sea-level rise by 2100 and to identify melting sea ice as its primary causal mechanism. These findings will be valuable for scientists communicating about sea-level rise, communicators seeking to engage publics on the issue of sea-level rise, and media reporting on sea-level rise.

scholarly journals Sea Summation : How Waterfront Urbanisation can use Hydrological Strategies While Facilitating For Climate Change

2021 ◽  
Author(s):  
◽  
Zarah Sahib
Keyword(s):  
Climate Change ◽  
New Zealand ◽  
Sea Level Rise ◽  
Public Space ◽  
Sea Level ◽  
Great Level ◽  
Storm Events ◽  
Climate Conditions ◽  
Global Issues ◽  
Private And Public

<p>Urban inclination has unfavourably allowed for urban development throughout New Zealand to be found either along once naturally ecologically established and natural defensive coastal shorelines, waterfronts or along reclaimed shores to be developed on top of. Through reclamation, it has shown fundamentals of how we want to live closer to the water’s edge, however in this process the lack of social and ecological space is diminishing and being catalyst residential and high end luxury private space (Dianne Menzez). Urban inclination should propose that urban waterfronts become multifunctional and facilitate towards a great public space. However with a deep attachment for the water’s edge, we orientate living ourselves towards the water which also shows an interesting argument between the city and coast relationship that also comes with increasing climate change conditions.   Climate change has been under extensive focus for frequent years, conditions of notably large New Zealand urban sites remain under threat of infringing sea level rise and storm events which are in need for proper systematic infrastructure for this adaption purpose. With significant numbers of infrastructural systems situated in close proximity to waterfront environments, the rising numbers of communities orientated towards this face vulnerability to such global issues. In events of future sea level rise, increasing flooding will definitely impact the prone waterfronts Wellington City is one of New Zealand’s most vulnerable sites to sea level rise due to its proximity to coastal edges. Its low lying surface and unsustainable infrastructure and design promotes flooding through deficient water networks.   This thesis identifies the Wellington’s post-industrial site; Centerport with proposals for intended residential development. There is however a great level of susceptibility the site does not meet needs for protection from arising climate conditions, and its current poor social relation to the wider waterfront, which this thesis intends to investigate and resolve.   Centerport remains vulnerable to being a crucial domain for connectivity to the harbor edge and coastal hazard impact compared to other waterfronts. Through the means of researching adaptive water technological systems, this thesis hopes it will provide and conceptualise an impact within private and public communities through addressing coastal resilience, waterfront resilience and provide permeable adaptive waterfront design for the arising climate conditions.</p>

New Zealand 20th century sea level rise: Resolving the vertical land motion using space geodetic and geological data

2013 ◽  
Vol 118 (11) ◽  
pp. 6076-6091 ◽  
Author(s):  
Abdelali Fadil ◽  
Paul Denys ◽  
Robert Tenzer ◽  
Hugh R. Grenfell ◽  
Pascal Willis
Keyword(s):  
New Zealand ◽  
Sea Level Rise ◽  
Sea Level ◽  
20Th Century ◽  
Geological Data ◽  
Vertical Land Motion
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