Change in global ocean heat content between the surface and 2000 meters of depth from 1958 to 2017 (top) and distribution of
ocean heat content anomalies in 2017 (bottom).
A recently published estimate of Earth's global warming trend is 0.63 ± 0.28 W / m2, as calculated from ocean
heat content anomaly data spanning 1993 - 2008.
This study showed that the predictability of La Niña duration is controlled by the magnitude of initial
oceanic heat content anomalies driven by the preceding El Nino.
Composite analysis on these events shows that August meridional heat fluxes into the Arctic midtroposphere are succeeded by positive
heat content anomalies in the lower troposphere a few days later
«Although the different estimates of OHCA (ocean
heat content anomaly) produce seemingly different estimates of interannual ocean heating rate variability, these differences are all within the range of observational uncertainty.
The key is that the tropical Pacific is actually very well sampled (through the TOGA - COARE array) and the patterns you see in the annual means change slowly enough for
the heat content anomalies to be well characterised.
Time series of annual average global integrals of upper ocean
heat content anomaly (1021 J, or ZJ) for (a) 0 — 100 m, (b) 0 — 300 m, (c) 0 — 700 m, and (d) 0 — 1800 m. Thin vertical lines denote when the coverage (Fig. 3) reaches 50 % for (a) 0 — 100 m, (b) 100 — 300 m, (c) 300 — 700 m, and (d) 900 — 1800 m. From Lyman & Johnson (2013)
Over the last month or so warm sea - surface temperature [SST] and upper - ocean
heat content anomalies have increased in the near - equatorial central Pacific, while the SST cool tongue in the near - equatorial far - eastern Pacific has weakened, with warm anomalies now evident there.
Time series of annual average global integrals of upper ocean
heat content anomaly (1021 J, or ZJ) for (a) 0 — 100 m, (b) 0 — 300 m, (c) 0 — 700 m, and (d) 0 — 1800 m. Time series are shown using ZIF estimates relative to both ClimArgo (dashed grey lines) and Clim1950 (dashed black lines).
Phrases with «heat content anomalies»