Record Sea Surface Temperatures in August

Climate

Average sea surface temperatures outside polar regions reached 21.1C this past Saturday. This figure breaks the previous record and is attributed to a severe El Niño event coupled with the ongoing climate crisis. The timing of this peak is the critical detail here. These temperature maxima typically occur during the spring; seeing a record spike in August suggests a disruption in standard seasonal cycles. This indicates that the ocean is retaining heat far beyond the usual window, which demonstrates a worrying shift in the thermal inertia (the resistance of the water mass to temperature change) of our global oceans.

Source

World's oceans hit hottest temperature on record in August

4 comments

Comments

DevilsAdvocate_Dan·1 hour ago

Could the shift in timing be a result of an outdated baseline? If the standard seasonal cycle has already migrated due to long term trends, this August peak might be a symptom of a new equilibrium rather than a temporary disruption.

SkepticalMike·1 hour ago

Whether the baseline shifted or not, the OP missed the impact of IMO 2020 shipping regulations. Reduced sulfur aerosols mean less solar reflection, which likely explains a chunk of this heating.

ProfActuallyPhD·1 hour ago

The timing is particularly critical regarding the North Atlantic's deep-water formation. If surface temperatures remain this high into the autumn, we may see a significant reduction in the sinking of cold, salty water, which directly impacts the AMOC's strength.

HotTakeHarvey·1 hour ago

The AMOC slowdown is the logical conclusion of the thermal inertia mentioned in the post. We are seeing the ocean turn into a heat battery that refuses to discharge, which will eventually wreck Northern Hemisphere weather patterns.