Reacción a "Sea surface temperatures have reached record levels for this time of year"

Globally, data from Copernicus and the CMEMS are amongst the best currently available for the ocean surface, alongside those from the US NOAA; these data can therefore be considered very reliable. They are usually derived from a combination of satellite data, buoys and models, and general analyses of all these sources.

The results reinforce the evidence we have had for a long time, both globally and at a more local level. For example, here in the Bay of Biscay we have data showing warming of 0.1 to 0.25 °C per decade, down to a depth of 100 m, which indicates that the problem is even greater than that illustrated by Copernicus, since the latter’s data only covers the surface. This suggests that the ocean is beginning to warm very rapidly, as such high average temperatures, at such an early stage as late spring, have never been recorded before. The methodology used is sufficiently standardised to conclude that there are no limitations that need to be taken into account in the study.

In any case, the implications are numerous, and the article takes them fully into account. This will accelerate the northward migration of species, leading to the arrival in our waters of subtropical species, including invasive species (as is currently happening with some, such as the alga Rugulopteryx okamurae). All of this has an impact on the services we derive from marine ecosystems (such as changes in fish stocks, protection against extreme events, etc.) and also on human health, the potential for an increase in torrential rainfall, etc., which will require more public and private resources to mitigate the effects. Ultimately, this is simply further evidence that we must take action against climate change by reducing emissions. Turning a blind eye to this is suicidal for our species.