Tim the Plumber wrote:
Coral is obviously having problems.
The sea level has not gone up, it's not that.
Yes it has, at this stage its effect is probably minimal but in the future may well be significant.
The sea temperature has not gone up, it's not that.
Yes it has particularly along the east coast of Australia and particularly in the shallow waters where coral grows.
There have not been significantly more storms.
True but it is the intensity of the storms that has risen and is likely to increase.http://www.theclimatechangeclearinghouse.org/ClimateChangeImpacts/ChangesStormIntensityFrequency/Pages/default.aspx
Metrological observations have shown an increase in total annual precipitation throughout the United States. Analysis of metrological data suggests this change in precipitation can be associated with an increase in extreme storm events.
The bleaching of corals below 6 inches excludes UV as the culprit. We need to find out what it is.
In any particular location it is no great problem to identify the main causes
In the case of the great barrier reef it is
Extreme weather events
The crown of thorns star fish
Fertilizer and chemical run off
Turbidity due to land clearing
High water temperatures