According to official SPC Pacific Data Hub figures, the average population across 14 Pacific countries and territories grew +40.5% between 1992 and 2022, while local food production grew only 16-22%. Ocean temperatures are warming, sea levels are rising, and disasters are striking more often. This data essay traces that pressure line, country by country.
Land area across the Pacific island nations stays fixed, while their populations keep changing. This section compares the population index against the crop yield index and the livestock productivity index to see whether local food production is keeping pace with population growth.
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Source: SPC Pacific Data Hub, DF_NMDI_POP (Population growth) & DF_CLIMATE_CHANGE (Crop Yield, Livestock Yield)
Two indicators are used to track the climate pressure bearing down on agricultural land: surface temperature anomaly and the Climate Altering Land Cover Index (CALCI), an SPC index for monitoring the intensity of land-cover change that could itself influence the climate. The CALCI index is calculated relative to a reference year, so a rise or fall doesn't automatically mean better or worse without local context.
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Source: SPC Pacific Data Hub, DF_CLIMATE_CHANGE (Surface Temperature Anomalies & CALCI)
Pacific nations aren't only threatened by climate change on land; the ocean around them is changing too. Sea surface temperature anomaly shows how far the ocean has warmed from its historical baseline, while sea level rise in millimetres measures the direct threat to land and coastal infrastructure.
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Source: SPC Pacific Data Hub, DF_CLIMATE_CHANGE (SST_ANOM, SEA_LVL)
SDG indicator 11.5.1 tracks the number of people directly affected by disasters each year. This data is episodic, meaning only years with a recorded disaster event have data, so the chart below only displays those years.
Tropical cyclones and flooding are the dominant causes behind spikes in people affected across this region. Direct economic loss data (SDG 11.5.2) is also available for some countries.
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Source: SPC Pacific Data Hub, DF_SDG_11 (11.5.1 People affected & 11.5.2 Direct economic loss)
Pacific countries are tiny contributors to global greenhouse gas (GHG) emissions, but not zero ones. Per-capita GHG emissions data (tonnes of CO₂ equivalent) reflects a mix of local activity: diesel power generation, maritime transport, deforestation, and agriculture. New Caledonia, as a French territory with a large nickel industry, consistently records the highest per-capita emissions in the region.
Ironically, the Pacific countries most threatened by climate change contribute the least to causing it, a structural injustice that sits at the heart of debates in international climate forums like COP.
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Source: SPC Pacific Data Hub, DF_CLIMATE_CHANGE (GHG_EMI_CAPITA)
After tracing every layer of this crisis, from the food deficit, to the creeping rise in temperature, to the swelling ocean, to disasters that arrive uninvited, the question is no longer whether there's pressure, but where that pressure weighs heaviest. Six key indicators have been compiled and compared at once across all 14 Pacific countries and territories, forming a map of vulnerability that can't be read from a single angle alone.
New Caledonia, meanwhile, stands apart in one category: per-capita GHG emissions running three to six times the regional average, driven by the nickel industry that anchors its economy. This isn't a minor anomaly, it's a deeper structural imbalance. The countries emitting the least greenhouse gas are, time and again, the ones bearing the heaviest consequences. The cyan-coloured bar marks whichever country is currently selected from the navigation panel above.
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Source: derived from the four SPC datasets above. Temperature change: the difference between the first 5-year average and the last 5-year average in the data.
SPC Pacific Data Hub data for 1992-2022 shows the average population across 14 Pacific countries grew +40.5%, while crop and livestock production grew only 16-22%. Average surface temperature anomalies have risen, ocean temperatures are warming, and more than 2.36 million people have been recorded as affected by disasters since the mid-2000s. This pattern isn't uniform: Kiribati and Nauru recorded food production growth that outpaced their populations, while Papua New Guinea, Vanuatu, and Solomon Islands face far wider gaps. New Caledonia stands out with the highest per-capita GHG emissions, while Tuvalu and Kiribati are the most existentially vulnerable to sea level rise.
Methodology note: the population index is calculated from annual growth rate data (%) restructured into a cumulative index. Crop & Livestock Yield data for Micronesia (FSM) from 1992-1994 was excluded from trend calculations, as it appears to use a different measurement basis. Disaster-affected population data is as-reported and does not represent every event that actually occurred. Cross-country temperature increases are calculated from the difference between the first 5-year average and the last 5-year average available (1992-1996 vs 2018-2022 for surface temperature).