A new assessment from NOAA indicates that while human activity and greenhouse gases may be altering the earth climate, to be able to predict future regional climate we will need to understand the oceans better.
Said a NOAA scientist: "Improving predictions of regional sea-surface temperatures will be crucial to predicting climate variability across the U.S. from years to decades."
NOAA scientific assessment says an increase in greenhouse gases is likely responsible for more than half of the average North American continental warming of 1.6° Fahrenheit over the past 50 years. Greenhouse gases from human causes and natural sources trap heat in Earth’s atmosphere.
Here is NOAA's website. NOAA recently reported that November was the fourth warmest November on record and 2008 will be the hot ten of all years for whichthere are records.