Boasts of the Hydrographic Institute have high temperatures of sea water

The systematic and long-term observation of the MONIZEE buoy network of the Hydrographic Institute (HI) allows the calculation of the mean water temperature at sea surface considering 20 years of observed data, thus ensuring greater confidence in the analyses and studies performed.

In June 2023, an increase in water temperature was observed at sea surface, by the directional ondograph buoys located in Leixões, Sines and Faro, with temperature values above the average of the last 20 years.

At the time, the average values from June 2023, compared with the averages from June 2000 to 2020, were as follows:

. Leixions this month have an average of 18.9 °C, representing +2,3 °C in relation to the historical average (16.6 °C);

. Sines recorded an average of 18.6 °C, representing +1,1 °C relative to the historical average (17.5 °C);

. Faro has an average of 20.6 °C this month, representing +1.0 °C relative to the historical average (19,6 °C).

The maximum values recorded in June 2023, compared with the average for June 2000 to 2020, were as follows:

. Leixions recorded 21.0 °C on 20 June, representing +4,4 °C in relation to the historical average (16.6 °C), but less than 22.4 °C, recorded on 14 August 2004.

. Sines registered 20.7 °C on 24 June, representing +3.2 °C in relation to the historical average (17.5 °C), but less than the maximum 23.1 °C, recorded on 19 August 2016.

. Faro recorded 24.4 °C on 26 June, representing +4,8 °C in relation to the historical average (19,6 °C), but less than the maximum of 26,6 °C, recorded on 6 August 2010.

Currently, the IH maintains in operation, within the framework of the MONIZEE system, a set of coastal ocean monitoring networks off the coast of mainland Portugal, namely in situ monitoring networks (multiparameter buoys, directional ondograph buoys, coastal marine stations and coastal weather stations) - which measure various oceanographic and/or meteorological parameters at the location of measurement equipment - and remote monitoring networks (coastal HF radar stations) - which measure oceanographic parameters (current speed and maritime agitation) of interest in adjacent maritime areas.

See MONIZEE observations on https://geomar.hydrographic. en.