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Climate News from the science press

Several off topic posts have been removed to AAH. If you wish to discuss general issues regarding global warming, please do so in an appropriate thread.
Replying to this modbox in thread will be off topic  Posted By: Cuddles
 
Hot off Dr. Spencer's UAH press. A rather dramatic graphic, 2010 has recorded the hottest Jan, Feb, Mar, Apr, and May on record. Note the exceptionally steep incline over the last month.

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I really should stop peeking at ignored posts but since this question is borderline legitimate I will assist. I can only hope the OP will finally accept reality and stop assuming that just because it was cold in one place that it was cold across the whole planet

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To amplify, this thread is not for discussion. This thread is for news postings only. If you have something not news, or something to discuss about a posting here, take it to another thread. You can post a link to that thread here to direct people to the discussion of the news story you mean to discuss; in fact it would be best if you edited your original posting of the story to include the link.

Thank You.
 
Continuing to ignore moderator warnings will result in further action, up to and including suspension or banning.
Replying to this modbox in thread will be off topic  Posted By: Cuddles
 
Greenland rapidly rising as ice melt continues

http://pda.physorg.com/ice-levelrise-sealevel_news193410777.html

OK, not exactly climate, but geophysics related to climate;

Greenland is situated in the Atlantic Ocean to the northeast of Canada. It has stunning fjords on its rocky coast formed by moving glaciers, and a dense icecap up to 2 km thick that covers much of the island--pressing down the land beneath and lowering its elevation. Now, scientists at the University of Miami say Greenland's ice is melting so quickly that the land underneath is rising at an accelerated pace.

According to the study, some coastal areas are going up by nearly one inch per year and if current trends continue, that number could accelerate to as much as two inches per year by 2025, explains Tim Dixon, professor of geophysics at the University of Miami Rosenstiel School of Marine and Atmospheric Science (RSMAS) and principal investigator of the study.

"It's been known for several years that climate change is contributing to the melting of Greenland's ice sheet," Dixon says. "What's surprising, and a bit worrisome, is that the ice is melting so fast that we can actually see the land uplift in response," he says. "Even more surprising, the rise seems to be accelerating, implying that melting is accelerating."

Dixon and his collaborators share their findings in a new study titled "Accelerating uplift in the North Atlantic region as an indicator of ice loss," The paper is now available as an advanced online publication, by Nature Geoscience. The idea behind the study is that if Greenland is losing its ice cover, the resulting loss of weight causes the rocky surface beneath to rise. The same process is affecting the islands of Iceland and Svalbard, which also have ice caps, explains Shimon Wdowinski, research associate professor in the University of Miami RSMAS, and co-author of the study.

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ouch
2010 on track to be hottest ever - U.S. climate data
Wed May 19, 2010 4:23pm I

LONDON (Reuters) - This year is on track to be the hottest ever after data published by America's climate agency this week showed record global temperatures in April and the first four months of 2010.

"The combined April global land and ocean average surface temperature was the warmest on record at 58.1 degrees Fahrenheit (14.5 degrees Celsius), which is 1.37 degrees F (0.76 degrees C) above the 20th century average of 56.7 F (13.7 C)," the National Oceanic and Atmospheric Administration (NOAA) said in a report on its website dated Monday, May 17.
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http://in.reuters.com/article/topNews/idINIndia-48619920100519
 
Record heat recorded for Africa's greatest lake
By Daniel Howden in Nairobi
Tuesday, 18 May 201

Africa's deepest lake is warming at an "unprecedented" rate thanks to man-made climate change, scientists have warned. Lake Tanganyika, which stretches from Burundi and DR Congo on its northern shores to southern Tanzania and Zambia, is the second largest lake in the world by volume.

The 420-mile-long finger of water in south-central Africa is now warmer than at any point in the last 1,500 years, according to research published in the journal Nature Geoscience, and the consequences could be dire for the 10 million people who live around it and depend on its fisheries.

"Our records indicate that changes in the temperature of Lake Tanganyika in the past few decades exceed previous natural variability," the paper found. "We conclude that these unprecedented temperatures and a corresponding decrease in productivity can be attributed to anthropogenic global warming."
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more

http://www.independent.co.uk/news/w...corded-for-africas-greatest-lake-1975612.html

and

Record high temperatures far outpace record lows across U.S.
February 11, 2010
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http://climateprogress.org/2010/02/11/science-meehl-ncar-record-high-temperatures-record-lows/
 
I'm heading to 29 in S Ontario - perishing hot for May tho not a record.

With this on top of our record warm winter and low moisture farmers are in for problems. :(

That little line really is "off the charts"... :eye-poppi
 
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Got to 30 day - still gorgeous out at 7.30 pm

The Water-Climate Relation

The second study, reported in this week's issue of the journal Nature, addresses how all this water can help scientists track global warming and predict its effects.

Led by John Lyman at the National Oceanic and Atmospheric Administration, this study involved a team of researchers from the United States, Germany, and Japan. They analyzed several different sets of ocean temperature measurements collected around the world from 1993 through 2008.

These measurements were made by different groups over this 16-year period using different assumptions. Some discrepancies between them arose because of the way the data was processed. Some swaths of ocean were not sampled as widely or as often as others. Changes in instrumentation have confused the issue further.

However, Lyman and colleagues standardized all the measurements and in doing so they found the same general trend for all the data.

"Although you see differences, they are all fairly consistent,” said Lyman.

They also averaged the results from these groups, which gave them the best estimate to date of the extent to which the top layers of the ocean have warmed over the last two decades. Lyman said that information is important because it is a good measure of global warming.

[b]"Ninety percent of the energy [trapped by increased greenhouse gasses] goes into the ocean,[/b]" said Kevin Trenberth of the National Center for Atmospheric Research in Boulder, Colorado, an expert who was not involved in the NOAA study.

"It's important to track this in order to properly understand what is happening in the climate system," Trenberth said. "If you dump heat in the ocean and it gets moved around and reappears somewhere, it has consequences in terms of the weather patterns."

A climatologist at NASA who was not involved in the research said this week that the long-term trends in ocean warming presented in the new study have confirmed other results in the field.

"That's what the climate models were predicting would be happening," said Gavin Schmidt, the NASA climatologist. "It's a great paper."

Provided by Inside Science News Service
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http://www.physorg.com/news193597107.html

as I was commenting elsewhere on atmosphere temps being a small part of the issue...
 
Robust warming of the global upper ocean

http://www.nature.com/nature/journal/v465/n7296/abs/nature09043.html

Discussed on RealClimate

http://www.realclimate.org/index.php/archives/2010/05/ocean-heat-content-increases-update/

One thing that is interesting to note is that the interannual variability – particularly in the transition period between the two observing systems (1995-2005 say) is very dependent on exactly how you do the corrections, while the longer term trend is robust. This ties in directly with comments by Kevin Trenberth in this recent paper and in an accompanying commentary to the Lyman paper that while the energy budget changes over the long term are explainable, the changes over short time frames are still very difficult to quantify
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Did you notice the editorial on the original paper
Editor's summary
Warming in the oceans
The upper ocean acts as a giant heat sink and has absorbed the majority of excess energy generated by anthropogenic greenhouse gasses. This makes ocean heat content, potentially, a key indicator of climate change. But to be useful for evaluating the global energy balance and as a constraint on climate models, the measurement uncertainties of such a key indicator need to be well understood. At present the magnitude of the oceanic heat uptake is highly uncertain, with patterns of inter-annual variability in particular differing among estimates. In a major international collaboration, Lyman et al. compare the available upper-ocean heat content anomaly curves and examine the sources of uncertainly attached to them — including the difficulties in correcting bias in expendable bathythermograph data. They find that, uncertainties notwithstanding, there is clear and robust evidence for a warming trend of 0.64 watts per square metre between 1993 and 2008.
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I imagine that will have quite an uptick given the ocean measurements of 2009 and early 2010.
 
Sorry, I'm a bit un-caught-up, but has anyone posted this?

Geologists Show Unprecedented Warming in Africa's Lake Tanganyika; Valuable Fish Stocks at Risk

Lake Tanganyika, the second oldest and the second-deepest lake in the world, could be in for some rough waters.

Geologists led by Brown University have determined the east African rift lake has experienced unprecedented warming during the last century, and its surface waters are the warmest on record. That finding is important, the scientists write in the journal Nature Geoscience, because the warm surface waters likely will affect fish stocks upon which millions of people in the region depend.
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