|Components||State in Scottish Seas|
|Sea temperature||Sea surface temperature is increasing. The rate of increase over the |
period 1985 - 2009 has been generally greater than 0.2°C per decade.
|Sea level||The average long-term UK trend in mean sea level is estimated as 1.4 |
mm/year. However the rise is not steady. For example, in the 1990s sea
level rose by 3 to 4 mm per year. Rising sea levels adversely affect the
low-lying parts of the coast which are vulnerable to flooding and erosion.
|Ocean acidification||Since the industrial revolution, the CO2 absorbed by the oceans has |
resulted in a decrease in pH of 0.1 units but there are currently no
baseline measurements of ocean acidity against which changes in Scottish
and wider UK waters can be judged.
|Circulation, suspended particulate matter, turbidity, salinity, waves||These processes vary on timescales from a day to years but have shown no significant trend over the past decade, except for a slight increase in salinity in the northern parts of Scottish seas.|
Page updated: Tuesday, November 15, 2011