The National Climate Data Center said that the average global ocean temperature in July was 62.6 degrees and that was the hottest since recording keeping began in 1880. Seth Borenstein’s column on this reported record says:
Breaking heat records in water is more ominous as a sign of global warming than breaking temperature marks on land. That’s because water takes longer to heat up and doesn’t cool off as easily, said climate scientist Andrew Weaver of the University of Victoria British Columbia. “This is another yet really important indicator of the change that’s occurring,” Weaver said.
Sometimes the alarmist seem eager to overreach in order to be, well , alarmists. The real issue is that measuring sea surface temperature (SST) is only one piece of the information needed to measure OCEAN HEAT CONTENT. Ocean heat content is the only way to know if our vast oceans are warming or cooling. The record shows that the oceans have slightly cooled.
This claim that July 09 SST is the hottest on record does not seem to be true. Roy Spencer has a post discussing this and he shows that this is not a record. And if you look at the data he provides, you can see that 1998 was a significant period of SST warming. Spencer says “None of this represents proof that July 2009 was not a record warm month in ocean surface temperature, but it does cast significant doubt on the claim. But the focus on a single month misses the big picture: recent years have yet to reach the warmth of 1998. “
Read Dr Spencer’s full post here