Model Thermohaline Trends in the Mediterranean Sea during the Last Years: A Change with Respect to the Last Decades?

Table 1

Linear trends of temperature (𝑇, °C/year), salinity (𝑆, year⁻¹) and steric sea level (𝜉_𝑆, cm/year) for the Mediterranean Sea from ECCO (E), and GLORYS (G) models. The time periods spanned are also indicated.

	𝑆E(93-09)⋅10^3	𝑆E(02-09)⋅10^3	𝑆G(02-09)⋅10^3	𝑇E(93-09)⋅10^3	𝑇E(02-09)⋅10^3	𝑇G(02-09)⋅10^3	𝜉SE(93-09)	𝜉SE(02-09)	𝜉SG(02-09)
0–150	1.4±0.1	1.3±0.4	6±3	5±3	12±12 (1)	15±12  (1)	n.s.	n.s.	n.s.
150–600	2.44±0.06	0.68±0.09	4.1±0.2	n.s.	−17±2	−17±2	−0.100±0.003	−0.16±0.07	−0.30±0.02
600-bottom	1.07±0.02	1.18±0.05	9±1	−8.00±0.09	−7.7±0.2	9.3±0.2	−0.321±0.002	−0.346±0.006	−0.67±0.02
0-bottom	1.77±0.07	0.9±0.1	10±1	n.s.	n.s. (2)	n.s.  (2)	−0.28±0.01	−0.32±0.04	−1.01±0.06

(1) Although the trend for the entire period 02–09 is subject to large uncertainty, two intervals of different trend can be identified: from 02 to 06, a negative trend of −0.10±0.02°C/year and −0.12±0.02°C/year for ECCO and GLORYS, respectively, is observed, followed by a positive trend of 0.16±0.03°C/year (ECCO) and 0.15±0.04°C/year (GLORYS) in 06–09.
(2) The same as above is applicable for the entire water column with negative trends of −0.039±0.007°C/year (ECCO) and −0.05±0.01°C/year (GLORYS) in 02–06 that change to positive 0.05±0.01°C/year (the same for both models) in 06–09.