The Southern Hemisphere experienced its warmest April and warmest month on record. It still remains to be seen whether the warmth will continue through the next few months, or whether an El Niño event will develop. In the case of early 2023, all major global SST products showed rapid ocean surface warming, but not all showed the warming as record breaking. Short term SST fluctuation is normal, and it is important to keep in mind all data have noise which could lessen the degree to which the temperature anomaly is seen as extreme. A few products, including NOAA's 1/4° Daily Optimum Interpolation Sea Surface Temperature (OISST), indicated record SST warmth at the end of March and early April, although SST started decreasing to below 21☌ by late April. Multiple international sea surface temperature (SST) products depicted rapid ocean warming at the beginning of 2023 after the long-lived La Niña began to wane. Dashed black lines are the 2-standard deviation for the climatological mean (black line). Yearly time series of sea surface temperature, globally averaged between. April 2023 marked the 49th consecutive April and the 530th consecutive month with global temperatures, at least nominally, above the 20th-century average. The 10 warmest April months have occurred since 2010. The April global surface temperature was 1.00☌ (1.80☏) above the 20th-century average of 13.7☌ (56.7☏). Precise of the climate system, and it is publicly available throughĪpril 2023 was the fourth-warmest April for the globe in NOAA's 174-year record. The most current reconstruction analysis is always considered the most representative and These factors, together, mean thatĬalculations from the past may be superseded by the most recent data and can affect the numbers reported in the The new historical data can bring about updates to previously reported values. Meaning that the entire period of record is recalculated each month with new data. NOAAGlobalTempv5.1.0 is a reconstructed dataset, Updated in 2023, uses comprehensive data collections of increased global area coverage over both Preliminary data generated from authoritative datasets of temperature observations from around the globe. NOAA's National Centers for Environmental Information calculates the global temperature anomaly every month based on Might differ slightly from what was reported previously, the main conclusions regarding global climate change are This new version includes complete global coverageĪnd an extension of the data record back in time an additional 30 years to January 1850. (NOAAGlobalTemp) dataset version 5.1.0 replaced version 5.0.0. Coinciding with the release of the January 2023 Global Climate Report, the NOAA Global Surface Temperature
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