So the blogger has discovered short-term variability exists in the global temperature record. Amazing stuff.
Look up 'La Nina'. Meteorologist bods were going on about it last year.
Synopsis: A transition from La Niña to ENSO-neutral conditions is expected during June-July 2008.
La Niña continued to weaken during May 2008, reflected mainly by changes in sea surface temperatures (SSTs) across the equatorial Pacific Ocean. Negative SST anomalies in the central and east-central equatorial Pacific weakened, while the region of positive SST anomalies increased in the eastern Pacific
Just a quick update. To be honest again things are moving quicker than I anticipated.
The multi year iceFigure 3. Infrared energy that the atmosphere emits to the surface during spring shows generally positive trends. Units are change in long-wave energy transfer per decade between 1979 and 2005; yellow and red colors are positive trends; white indicates regions without data. Derived from NOAA polar-orbiting satellites.
More on the sea ice-atmosphere connection
The more we study the Arctic's shrinking sea ice cover, the more we appreciate the key role of clouds and water vapor. Our colleague, Jennifer Francis of Rutgers University, has linked changes in the ice edge northwest of Alaska to variations in springtime cloudiness and in the water vapor content of the lower atmosphere. She has observed an increase in springtime cloud and water vapor over the last three decades that can be clearly linked to retreat of the ice edge.
What is the nature of this link? More clouds act like an umbrella, shading the sea ice surface from the sun's rays, known as solar radiation. At the same time, clouds act like a warm blanket, transferring heat in the form of long-wave radiation from the atmosphere to the ice surface. More water vapor in the atmosphere contributes to the blanket-like effect. Whether the umbrella or blanket effect dominates determines how much radiation is absorbed at the surface, which in turn influences the rate of ice melt. In spring, solar radiation is still relatively weak. Because of this, the blanketing effect of increased clouds and water vapor wins.
In the summer, the situation is reversed. Clear skies allow the strong radiation of the summer sun to reach the surface and melt sea ice. Anticyclone patterns set up these clear summer conditions. We will be monitoring atmospheric conditions closely for the possible onset of these conditions in coming months.
Both those graphs show there is more ice this year than last year.
How's the Antarctic melt going, dave? Any comparisons of this years melt with last years?
bigfish said:If you look up La Nina yourself, rather than simply parroting babble, you'll find it is dramatically weakening and likely set to change to ENSO neutral conditions later this month.
First, that still only amounts to short-term variability.
Second, the link and graph you provided from the blog refers to a period in the past, i.e. January 2007 to May this year. This is what we're talking about, remember?
No it doesn't. The graph goes back to 1979.
Wakey wakey hands off snakey! The area highlighted on the graph covers the period from January 2007 to May 2008. Far right hand side, in blue.
remember there are multiple factors at play in the climate on top of each other... you appear to have not noticed we're at or near the bottom of the solar cycle and in a la nina phase, whereas in 1997 & 2000 we were at or near the top of the solar cycle.Yes and the furthest right point (May 2008) is lower than it has been since 2000 or 1997 which covers more than one El Nino cycle (IIRC)
remember there are multiple factors at play in the climate on top of each other... you appear to have not noticed we're at or near the bottom of the solar cycle and in a la nina phase, whereas in 1997 & 2000 we were at or near the top of the solar cycle.
another factor that I'm currently looking for the data for (if anyone can point me in the right direction I'd be much obliged) is the figure for global atmospheric particulate levels, as I've got a sneaky suspicion that this massive increase in chinese and indian coal fired power station building could well be leading to increased global dimming effects that are partially offsetting co2 induced warming again. Any links appreciated.
for someone who's spent the last 6 years ignoring repeated requests to either back up or retract a huge range of plainly wrong statements, you're not really in any position to be making any demands of anyone now are you?"CO2 induced warming". Does this mean that you've finally located that ever so elusive exposition of the CO2 driver theory or is it just another assumption?
... I might consider tracking down the research papers I currently don't have access to that I'd need to finally shut you up.
So it is just another assumption, then, given that you have yet to locate and read this mythical CO2 driver paper for yourself.
Why do you place so much confidence in a theory that by your own admission you know nothing about?
as signal 11 has just posted, you really are a dishonest prick aren't you?So it is just another assumption, then, given that you have yet to locate and read this mythical CO2 driver paper for yourself.
Why do you place so much confidence in a theory that by your own admission you know nothing about?
http://pubs.giss.nasa.gov/docs/2007/2007_Romanou_etal.pdfanother factor that I'm currently looking for the data for (if anyone can point me in the right direction I'd be much obliged) is the figure for global atmospheric particulate levels, as I've got a sneaky suspicion that this massive increase in chinese and indian coal fired power station building could well be leading to increased global dimming effects that are partially offsetting co2 induced warming again. Any links appreciated.
Unless, of course, you are able to show that La Nina was so weakened as long ago as January 2007 to have no significant bearing on the global temperature between then and May 2008. Your argument requires that to stand, but can you deliver?
Anthony Watts, 25 June 2008
I posted on a similar story about volcanic eruptions under Antarctic ice earlier this year. What is unique about this situation is that it was a large eruption that went completely undetected, and under pressures that they thought not possible. The big question is then; where did the heat from the volcano go, and what effect did it have on the sea ice environment? Research has been going on looking at volcanism in the ridge but this discovery of a significant eruption in 1999 is new and unexpected.
From Science and The Sea: “In the last few years, for example, scientists have found that a long ridge beneath the north polar ice cap is dotted with volcanoes, and with vents of superheated water that could be home to many new species.”
http://www.scienceandthesea.org/index.php?option=com_content&task=view&id=30&Itemid=10
Press release from EurekAlert: International expedition discovers gigantic volcanic eruption in the Arctic Ocean
An international team of researchers was able to provide evidence of explosive volcanism in the deeps of the ice-covered Arctic Ocean for the first time. Researchers from an expedition to the Gakkel Ridge, led by the American Woods Hole Oceanographic Institution (WHOI), report in the current issue of the journal Nature that they discovered, with a specially developed camera, extensive layers of volcanic ash on the seafloor, which indicates a gigantic volcanic eruption.
http://www.eurekalert.org/pub_releases/2008-06/haog-fut062508.php
Bathymetric chart of the Gakkel Ridge at 85°E. Photographic bottom surveys were conducted along profiles shown as thin, black lines. The photo showing volcanic ashes on the sea bed were taken at the site, which is marked with a red star and the letter a.
Some facts you're not likely to hear about from the mainstream media. By Joe D’Aleo.
http://icecap.us/images/uploads/SOLSTICE_SEA_ICE_UPDATE.pdf
The Antarctic set a new record (since records began in 1979) for sea ice extent at the end of last winter. It stayed well above the normal through the summer with icemelt 40% below the normal. As a new height of irony and hype, the media made a big deal about a fracture of a small part of the Wilkins ice sheet in late February (160 square miles of the 6 million square mile Antarctic ice sheet (0.0027% of the total).
Media headlines blared: Bye-bye, Antarctica? and Massive ice shelf collapsing off Antarctica.
But as you can see from this Cryosphere chart below, the extent never dropped to less than 1 million square km ABOVE NORMAL during or after the brief event. Currently Antarctic ice extent is running nearly 1 million square kilometers higher than last year at this time. Peak comes at the end of the southern winter (September).
This chart, also from Cryosphere, shows the Global Sea Ice Area from 1979 to present. It begs the question, where's the melt?