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State of the Climate in the South-West Pacific in 2023

The global climate system is complex. In order to help understand such complexity, the WMO State of the Climate reports use climate indicators to describe how the climate has changed—providing a broad view of the climate at a global and regional scale. These indicators are representative of quantities most relevant to monitoring climate change, including the surface temperature, heat content of the ocean, greenhouse gas concentrations and other factors, as well as the responses of land, oceans and ice. The following site aims to provide an overview of the State of the Climate in the South-West Pacific in 2023.

The Global Context

State of the Climate in the South-West Pacific

(a) Linear trends in SST (°C per decade) over the period 1982–2022. (b) Area-averaged time series of SST anomalies (°C) relative to the 1982–2022 reference period for the areas indicated in grey dashed lines in (a).

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Reported extreme events by WMO Members in the South-West Pacific in 2023.

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© World Meteorological Organization, 2024

WMO uses datasets developed and maintained by the United States National Oceanic and Atmospheric Administration, NASA’s Goddard Institute for Space Studies, and the United Kingdom’s Met Office Hadley Centre and the University of East Anglia’s Climatic Research Unit in the United Kingdom.

It also uses reanalysis datasets from the European Centre for Medium Range Weather Forecasts and its Copernicus Climate Change Service, and the Japan Meteorological Agency. This method combines millions of meteorological and marine observations, including from satellites, with models to produce a complete reanalysis of the atmosphere. The combination of observations with models makes it possible to estimate temperatures at any time and in any place across the globe, even in data-sparse areas such as the polar regions.

Internationally recognized datasets are used for all other key climate indicators. Full details are available in the report.

Videos

Australian Bureau of Meteorology, WMO

Data visualization

Claire Ransom

Content Contributors

FAO, IOM, LEGOS, SPC, SPREP, ESCAP, UNDRR, UNHCR, WFP

(a) Linear trends in SST (°C per decade) over the period 1982–2022. (b) Area-averaged time series of SST anomalies (°C) relative to the 1982–2022 reference period for the areas indicated in grey dashed lines in (a).