Sea-level rise in 52 small island nations four times high


KARACHI: A new United Nations Environment Program (UNEP) report has said climate change-induced sea-level rise in the world’s 52 small island nations – estimated to be up to four times the global average – continues to be the most pressing threat to their environment and socio-economic development with annual losses at the trillions of dollars due to increased vulnerability.

According to UNEP report issued from Bridgetown, an immediate shift in policies and investment towards renewable energy and green economic growth is required to avoid exacerbating these impacts.

In all SIDS regions, coral reefs, the frontline for adaptation, are already severely impacted by rising sea surface temperatures. The global net loss of the coral reef cover – around 34 million hectares over two decades – will cost the international economy an estimated US$11.9 trillion, with Small Island Developing States (SIDS) especially impacted by the loss.

In the insular Caribbean, for example, up to 100 per cent of coral reefs in some areas have been affected by bleaching due to thermal stress linked to global warming. Climate threats are projected to push the proportion of reefs at risk in the Caribbean to 90 per cent by 2030 and up to 100 per cent by 2050.

The SIDS Foresight Report identifies climate change impacts and related sea-level rise as the chief concern among twenty emerging issues impacting the environmental resilience and sustainable development prospects of SIDS – including coastal squeeze, land capacity, invasive alien species and threats from chemicals and waste.

“Rio+20 emphasized that SIDS have unique vulnerabilities and require special attention during the evolution of the sustainable development agenda in order to achieve the gains required to lift people out of poverty, create green jobs and provide sustainable energy for all,” said UN Under-Secretary-General and UNEP Executive Director Achim Steiner.

“For example, these 52 nations, home to over 62 million people, emit less than one per cent of global greenhouse gases, yet they suffer disproportionately from the climate change that global emissions cause.”

“Fortunately, studies demonstrate that we have the tools and capabilities to head off future developmental setbacks. It is up to the international community to supports SIDS – not least through building momentum towards a robust climate agreement – to be agreed in 2015, which will cut emissions and minimize the threat of climate change for these nations,” he added.

The report – launched in Bridgetown on World Environment Day – warns that the magnitude and frequency of many weather and climate-related hazards will increase as climate warming accelerates, especially in small islands. This will lead to disproportionate and compounded climate change impacts, which will adversely affect multiple sectors – from tourism, agriculture and fisheries to energy, freshwater, health and infrastructure, unless ocean-based green economy approaches and policy options are put into action.

However, it also demonstrates that SIDS can transition to an inclusive green economy and ensure a sustainable prosperous future by taking advantage of opportunities in areas such as renewable energy, sustainable exploration of unexploited resources, developing an ocean-based green economy and leading the world in the development of inclusive indicators that go beyond Gross Domestic Product to include natural resources.

A second report, the Barbados Green Economy Scoping Study – also launched by UNEP on World Environment Day – provides a practical roadmap for policymakers and businesses on the greening of tourism, agriculture, fisheries, building/housing and transportation in Barbados – lessons that can also be applied in other SIDS.

“The issue of the Green Economy is of particular importance to Barbados given our national commitment to advance an inclusive sustainable development paradigm – in the process creating a Barbados that is socially balanced, economically viable and environmentally sound,” said Freundel Stuart, Prime Minister of Barbados.

“The policy, investment and research proposals contained in the Green Economy Scoping Study will not be confined to a shelf,” he added. “This can be witnessed in the integration of the green economic policy proposals into the new Barbados Growth and Development Strategy, and the mobilization of major investments that harmonize with the green economy in areas such as agriculture, tourism, waste, and water.”

SIDS’ vulnerability to climate change and sea-level rise is magnified due to their relatively small land masses, population concentrations, and high dependence on coastal ecosystems for food, livelihood, security and protection against extreme events.

While the global average of sea-level rise is 3.2 mm per year, the island of Kosrae, in the Federated States of Micronesia, is experiencing a sea-level that is rising at a rate of 10 mm per year. The tropical Western Pacific, where a large number of small islands are located, experienced sea-level rise at a rate of 12 mm per year between 1993 and 2009 – about four times the global average.

Among the threats are increased flooding, shoreline erosion, ocean acidification, warmer sea and land temperature, and damage to infrastructure from extreme weather events.

Apart from its direct impacts, climate change will have a compounding effect on several socio-economic sectors in SIDS.

For example, fisheries play a significant role in the economy, livelihoods and food security of SIDS, estimated at up 12 per cent of total Gross Domestic Product (GDP) in some nations. In Pacific SIDS, fish accounts for up to 90 per cent of animal protein in the diet of coastal communities.

Yet climate change is expected to negatively impact fisheries, posing a clear challenge to meeting the nutritional needs of growing populations, damaging livelihoods and hampering efforts to lift people out of poverty.

Climate change will also impact tourism, which represents more than 30 per cent of SIDS total exports. For example, a 50-centimeter rise in sea-level would result in Grenada losing 60 per cent of its beaches.

Then there is the financial cost of adaptation to climate change: under business-as-usual models, the capital cost of sea-level rise in the Caribbean Community Countries alone is estimated at US$187 billion by 2080.

The report calls on the international community to gear up actions towards reducing climate change impacts, especially in SIDS, and to adopt a legally binding agreement that includes clear ambitious targets for reduction of greenhouse gas emissions.

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