0B0ZN wrote:
> Oceans Have Not Warmed At All
>
> Richard Harris
>
> March 19, 2008
>
>
>
> http://www.npr.org/templates/story/story.php?storyId=88520025
>
These are the ARGOS drifters. They don't go down deep enough to measure
heat content of the bottom water, which is heating.
Recent bottom water warming in the Pacific Ocean
Author(s): Johnson GC (Johnson, Gregory C.), Mecking S (Mecking, Sabine),
Sloyan BM (Sloyan, Bernadette M.), Wijffels SE (Wijffels, Susan E.)
Source: JOURNAL OF CLIMATE Volume: 20 Issue: 21 Pages: 5365-5375 Published:
NOV 1 2007
Times Cited: 0 References: 25
Abstract: Decadal changes of abyssal temperature in the Pacific Ocean are
analyzed using high-quality, full-depth hydrographic sections, each
occupied at least twice between 1984 and 2006. The deep warming found over
this time period agrees with previous analyses. The analysis presented here
suggests it may have occurred after 1991, at least in the North Pacific.
Mean temperature changes for the three zonal and three meridional
hydrographic sections analyzed here exhibit abyssal warming often
significantly different from zero at 95% confidence limits for this time
period. Warming rates are generally larger to the south, and smaller to the
north. This pattern is consistent with changes being attenuated with
distance from the source of bottom water for the Pacific Ocean, which
enters the main deep basins of this ocean southeast of New Zealand. Rough
estimates of the change in ocean heat content suggest that the abyssal
warming may amount to a significant fraction of upper World Ocean heat gain
over the past few decades.
--
Bill Asher |