NOAA annual land-only and ocean-only anomalies; °C relative to 1991–2020, 1980–2025.
NOAA annual land-only and ocean-only temperature anomalies are compared from 1980 through 2025. Both series are expressed as degrees Celsius relative to the 1991–2020 average. In 2025, the land anomaly is +0.857°C and the ocean anomaly is +0.365°C. The land–ocean gap is 0.492°C in that year.
Source 1: NOAA GlobalTemp v6.1
Publisher: NOAA National Centers for Environmental Information
Dataset/table: Annual global land-only and ocean-only temperature anomalies
Units: °C anomaly relative to 1991–2020
Date checked: 2026-07-17
Evidence: Provides both annual anomaly series from 1980 through 2025.
Both series use the 1991–2020 average as their reference. Land and ocean estimates have different uncertainty structures, but their anomaly levels are directly comparable within NOAA GlobalTemp.
Land-only and ocean-only NOAA annual values were paired by year from 1980 through 2025. Eight common years are plotted, and the annual data table retains the complete 46-year comparison.
One NOAA GlobalTemp release supplies both lines with the same annual periods, degrees-Celsius unit and 1991–2020 reference.
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