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| Pacific Islands Regional Climate Assessment | |
|---|---|
| Name | Pacific Islands Regional Climate Assessment |
| Formation | 2013 |
| Region | Pacific Islands |
| Focus | Climate science, vulnerability, adaptation |
Pacific Islands Regional Climate Assessment presents a coordinated synthesis of climate science, impacts, vulnerabilities, and response options for the Pacific Islands Forum region, including the Hawaiian Islands, Guam, American Samoa, the Commonwealth of the Northern Mariana Islands, and the Freely Associated States such as the Federated States of Micronesia, Republic of the Marshall Islands, and Republic of Palau. The Assessment integrates evidence from agencies and institutions including the National Oceanic and Atmospheric Administration, the National Aeronautics and Space Administration, the Intergovernmental Panel on Climate Change, the United Nations Framework Convention on Climate Change, and regional partners such as the University of the South Pacific and the Pacific Community (SPC). It informs policy processes like submissions to the Conference of the Parties and supports planning by national entities such as the Republic of Fiji government, subnational authorities in Hawaii (U.S. state), and customary guardians across the Polynesia, Micronesia, and Melanesia subregions.
The Assessment consolidates peer-reviewed research from organizations including the Joint Institute for the Study of the Atmosphere and Ocean, the NOAA Pacific Islands Fisheries Science Center, the US Geological Survey, the World Wildlife Fund, and universities such as University of Hawaiʻi at Mānoa, University of California, Berkeley, Australian National University, and University of Auckland. It addresses physical drivers documented by the National Climate Assessment series and the IPCC Sixth Assessment Report, connects to international commitments under the Paris Agreement and the Sendai Framework for Disaster Risk Reduction, and supports implementation of national strategies such as the Fiji National Climate Change Policy and the Kiribati Joint Implementation Plan for Climate Change and Disaster. Stakeholders include Pacific Islands Forum Secretariat, Green Climate Fund, Asian Development Bank, World Bank, non-governmental actors like Conservation International, The Nature Conservancy, and indigenous institutions such as Hawaiian Kingdom cultural organizations and Rotuma Island Council.
Observed changes draw on datasets from Hadley Centre, NOAA National Centers for Environmental Information, NASA Goddard Institute for Space Studies, and regional tide gauge networks maintained by University of Hawaii Sea Level Center. Key drivers include rising global greenhouse gas concentrations documented by Mauna Loa Observatory, changing sea surface temperatures associated with the El Niño–Southern Oscillation, shifts in the Pacific Decadal Oscillation, and increasing radiative forcing noted in IPCC AR6. Observed trends include sea level rise at locations such as Tarawa, Palau, and Honolulu, warming of reef-building waters impacting Great Barrier Reef analogs in the region, changes in cyclone intensity linked to research by James Kossin and Kerry Emanuel, and altered precipitation patterns affecting catchments on islands like Viti Levu and Savaiʻi. The Assessment synthesizes projections from Coupled Model Intercomparison Project Phase 6 and regional downscaling efforts undertaken by the Pacific Climate Change Science Program.
Ecosystem impacts synthesize studies of coral bleaching affecting species in Papahānaumokuākea Marine National Monument, mangrove dynamics in Vanuatu and Solomon Islands, and seabird colony shifts observed at Midway Atoll. Coral reef degradation documented in work by NOAA Coral Reef Watch and researchers at James Cook University interacts with overfishing pressures noted by Food and Agriculture Organization, altering habitat for species protected under conventions such as CITES and the Convention on Biological Diversity. Freshwater lens salinization threatens endemic plants on atolls like Kiritimati, while upland forest composition changes documented by US Forest Service and Landcare Research impact endemic birds including those studied in American Samoa National Park. Invasive species dynamics involving taxa cataloged by IUCN exacerbate native extinctions documented in case studies from Tahiti, Palau, and New Caledonia.
The Assessment links climate hazards to livelihoods in sectors such as fisheries overseen by Western and Central Pacific Fisheries Commission, tourism economies centered on destinations like Bora Bora and Maui, and agriculture adaptations in islands including Samoa and Fiji. Cultural heritage sites—from Nan Madol to ʻIolani Palace—face risks captured by collaboration between UNESCO and local heritage agencies. Human health interactions reference work by World Health Organization on vector-borne diseases in the Pacific and studies from Centers for Disease Control and Prevention on heat stress in Hawaii. Migration and displacement analyses draw on case law such as decisions considered by the International Court of Justice and policy frameworks developed by UNHCR and the International Organization for Migration addressing planned relocation in places like Baker Island and Mili Atoll.
Vulnerability assessments combine exposure analyses using tools from Pacific Islands Applied Geoscience Commission (SOPAC), sensitivity studies by Secretariat of the Pacific Regional Environment Programme (SPREP), and adaptive capacity measures informed by Asian Development Bank resilience metrics. Multi-hazard risk mapping incorporates tsunami histories such as the 2009 Samoa earthquake and tsunami, cyclone records including Cyclone Winston (2016), and sea-level inundation scenarios applied to capitals like Apia and Funafuti. Socioeconomic indicators reference national statistics from Statistics New Zealand, U.S. Census Bureau reports for territories, and vulnerability indices developed by United Nations Development Programme. Community-based vulnerability narratives highlight traditional knowledge systems practiced by matai leadership in Samoa and Islander customary authorities in Palau.
Adaptation options span nature-based solutions promoted by The Nature Conservancy and Conservation International, infrastructure investments financed by Green Climate Fund and World Bank climate funds, and policy instruments aligned with Paris Agreement Nationally Determined Contributions prepared by Fiji, Marshall Islands, and Tuvalu. Coastal defenses include engineered seawalls in Majuro and ecosystem-based restoration projects in Rarotonga. Energy transition initiatives reference deployments of solar microgrids in Kiribati informed by International Renewable Energy Agency analyses and electrification projects supported by Asian Development Bank. Legal and governance strategies connect to litigation trends exemplified by cases influenced by Urgenda Foundation and climate diplomacy at the United Nations General Assembly.
The Assessment identifies data needs addressed by collaborations among NOAA Pacific Services Center, Pacific Islands Climate Change Cooperative, Australian Bureau of Meteorology, and academic networks like PICES. Gaps include long-term tide gauge coverage at remote atolls cataloged by Global Sea Level Observing System, biodiversity baseline surveys lacking in parts of Melanesia noted by BirdLife International, and socioecological longitudinal studies recommended alongside monitoring by SPREP and University of the South Pacific. Priority research agendas call for improved regional downscaling using CMIP6 ensembles, integration of indigenous knowledge systems with scientific monitoring practiced by Community Conserved Areas initiatives, and capacity building through partnerships with institutions such as East-West Center and Gordon and Betty Moore Foundation-funded programs.
Category:Climate change in Oceania