Not exact matches
The die -
off is due to a combination of rising sea
surface temperatures and decreased
ocean circulation between the higher and lower layers, Boyce says.
Scientists working
off the California coast use chemical - sniffing probes, robotically driven subs, and seafloor - tethered
temperature sensors to watch flows of lava pave over a once - thriving ecosystem at hydrothermal vents several kilometers below the
ocean's
surface.
Normally, the
temperature of the Pacific
Ocean's
surface waters is about 7.8 ° Celsius (14 ° Fahrenheit) higher in the Western Pacific than the waters
off South America.
(1) The warm sea
surface temperatures are not just some short - term anomaly but are part of a long - term observed warming trend, in which
ocean temperatures off the US east coast are warming faster than global average
temperatures.
When combined with increased
ocean stratification due to this enhanced run
off [11], sea -
surface temperatures are depressed, encouraging sea - ice formation.
The paleoclimate record (8.2 kyr, and earlier «large lake collapses») shows a dramatic drop in
surface temperatures for a substantial period of time when the
ocean circulation shuts
off or changes, but is that actually what would be expected under these warming conditions?
However, at the same time, there's been the steady increase in subtropical
ocean surface temperatures in the Atlantic Warm Pool, leading to record water
temperatures off the US east coast in winter, which tends to fuel more extreme storms (via the increase in water vapor pressure over the warmer
ocean).
The intense prehistoric hurricanes were fueled in part by warmer sea
surface temperatures in the Atlantic
Ocean during the ancient period investigated than have been the norm
off the U.S. East Coast over the last few hundred years, according to the study.
El Ni o an irregular variation of
ocean current that, from January to February, flows off the west coast of South America, carrying warm, low - salinity, nutrient - poor water to the south; does not usually extend farther than a few degrees south of the Equator, but occasionally it does penetrate beyond 12 S, displacing the relatively cold Peruvian current; usually short - lived effects, but sometimes last more than a year, raising sea - surface temperatures along the coast of Peru and in the equatorial eastern Pacific Ocean, having disastrous effects on marine life and fi
ocean current that, from January to February, flows
off the west coast of South America, carrying warm, low - salinity, nutrient - poor water to the south; does not usually extend farther than a few degrees south of the Equator, but occasionally it does penetrate beyond 12 S, displacing the relatively cold Peruvian current; usually short - lived effects, but sometimes last more than a year, raising sea -
surface temperatures along the coast of Peru and in the equatorial eastern Pacific
Ocean, having disastrous effects on marine life and fi
Ocean, having disastrous effects on marine life and fishing
Strong, localized sea
surface temperature anomalies may reveal that an
ocean current, such as the Gulf Stream Current
off the east coast of the United States, has veered
off its usual path for a time or is stronger or weaker than usual.
Ocean temperatures: As meteorologist Angela Fritz observes, sea
surface temperatures off the Mid-Atlantic coast were near a record high in September, and 2.3 degrees Fahrenheit above the long term average.
Water evaporates
off the
surface of the
ocean and the vapor is at the same
temperature as the water.
Methane bubbles are coming up from
ocean vents
off the Washington and Oregon coast, and a new study identified warming
ocean temperatures one - third of a mile below the
surface as likely responsible.
For example, reductions in seasonal sea ice cover and higher
surface temperatures may open up new habitat in polar regions for some important fish species, such as cod, herring, and pollock.128 However, continued presence of cold bottom - water
temperatures on the Alaskan continental shelf could limit northward migration into the northern Bering Sea and Chukchi Sea
off northwestern Alaska.129, 130 In addition, warming may cause reductions in the abundance of some species, such as pollock, in their current ranges in the Bering Sea131and reduce the health of juvenile sockeye salmon, potentially resulting in decreased overwinter survival.132 If
ocean warming continues, it is unlikely that current fishing pressure on pollock can be sustained.133 Higher
temperatures are also likely to increase the frequency of early Chinook salmon migrations, making management of the fishery by multiple user groups more challenging.134
Answer to
off topic: Without spending too much time on the post you quote, I think they are talking of
temperature differences between the skin
surface of the
ocean, the one that enters the stephan boltzman equation, and 5cms below.
(1) The warm sea
surface temperatures are not just some short - term anomaly but are part of a long - term observed warming trend, in which
ocean temperatures off the US east coast are warming faster than global average
temperatures.
«Take unusually warm Atlantic
ocean surface temperatures (
temperatures are in the 70s
off the coast of Virginia), add a cold Arctic outbreak (something we'll continue to get even as global warming proceeds), mix them together and you get huge amounts of energy and moisture, and monster snowfalls, like we're about to see here,» said Michael Mann, a climate researcher who directs Penn State University's earth systems science center.
But when that
ocean is hot — and at the moment sea
surface temperatures off the Northeast are five degrees higher than normal — a storm like Sandy can lurch north longer and stronger, drawing huge quantities of moisture into its clouds, and then dumping them ashore.
Given that
surface temperatures have levelled
off / slightly dipped for the last decade, what would be your response to a discovery that that the
oceans have also not warmed over that period — i.e. that actually there is no warming waiting in the «pipeline»?
Funny how the heat going into the
ocean depths argument only took
off when the
surface temperature hiatus became an embarrassment.
With such elevated sea
surface temperatures it is perhaps unsurprising that fossil evidence in
ocean sediments indicates a mass extinction event during the PETM: the seas would have become thermally stratified, cutting
off the oxygen supply to deep waters and killing everything reliant upon it.
As
ocean temperatures warm, the ice sheet melts below the
surface, and more icebergs break
off.