Posts Tagged ‘warming’

Warmer Seas Blocking Nature’s Carbon Pump

The researchers further warn that increasing temperatures in this vital, globally-extended ecosystem could “reduce the transfer of primary produced organic matter to higher trophic levels” (e.g., such as those that sustain corals and the many species that use them as habitat), interfere with the global carbon pump, and possibly set up a positive feedback mechanism, further increasing atmospheric carbon dioxide.

2000-Year Arctic Cooling Trend Reversed Itself Near Turn of 20th Century

According to the NAU researchers, the warming that occurred in the 20th Century and early 21st Century, “contrasts sharply” with the millennial-scale cooling trend; the last half-century being the warmest in the record, and, the decade from 1999 - 2008 being the warmest decade of the last 200 decades. Over all average temperatures were 1.4° C (about 2.5° F) warmer than the projected value based on the linear cooling trend.

Emergency Climate Control: Geoengineering Risks

The appeal of shortwave, geoengineering is in it’s purportedly rapid, remediation impact (although no global experiments have been conducted yet). However, the combined climate impact of GHG increases with a geoengineered reduction in shortwave radiation is not known, but, it is feared, could result in environmental “winners” and “losers”–meaning some regions of the planet could experience severe drought, and even increased conflict over water resources.

Marine “Dead Zones” Will Increase, Scientists Predict

Underwater video frame of the sea floor in the Western Baltic covered with dead or dying creaturs due oxygen depletionSo-called “dead zones”–patches of ocean lacking aerobic (oxygen breathing) life–will most likely increase due to a rise in carbon dioxide (CO2) concentrations.

Because of CO2 build up in the atmosphere, its level of concentration in the oceans also increases. There, some of the CO2 converts to a simple acid called carbonic acid. (H2CO3).

What is becoming a much-studied phenomenon in recent years, these dead zones of depleted oxygen (02) - typically found at depths between 300 and 600 meters–are the result of several factors working separately and in combination: lower sea surface 02 levels, less heat exchanging (”ventilation”) with mid-level ocean depths due to over-all warming, and “euthrophication events” (an over-growth of a species due to excess nutrients).

Major Studies Reveal State of the Poles

Opening of the Northwest Passage as seen form the Space StationThis month, as the results of data analyses come in, climate scientists are getting a more detailed, far clearer picture of the ‘State of the Poles’ and the effects of warming and climate change in these most extreme regions of our planet. Although this project is actually the culmination of two years work (encompassing 160 separate studies and costing 1.2 billion dollars) it has been officially deemed the ‘International Polar Year’ (IPY).

One of the most important findings of this project is a confirmation of what many climate scientists have suspected for a couple of years now–that the impact of climate change on our environment is happening at a much faster rate than previous computer models predicted. This is true even for the four major reports released by the Intergovernmental Panel on Climate Change (the last of which was released in 2007).

Rubber Ducks Help Track Melting Glaciers… Rubber Duck Duck

rubber duck>> Welcome Readers! Did you know that Green Options has 15 sites? If you like this post, please subscribe for our main RSS feed or the Green Options Newsletter!

Ever since I first saw Ernie and almost the entire felt-cast of Sesame Street do “The Rubber Duck, Duck” dance on Sesame Street, I have had a strange fascination with rubber ducks. They aren’t the common toy here in Australia that they appear to be elsewhere. And though looking back at that video now presents me with a bit of a moral and architectural dilemma, considering just how many people are naked together in that tub, my love for the rubber duck continues.

And now, once again, the rubber duck is coming to the aid of science. US rocket scientist Alberto Behar of NASA’s Jet Propulsion Laboratory in California has sent 90 rubber ducks into the Jakobshavn Glacier in Greenland in an attempt to figure out what is happening inside Greenland’s fastest moving glacier.

New Analysis Predicts Planet Warming Will Lead to Massive Loss of Biodiversity

2289197116_21f5f9283a Under a scenario that is nothing short of fairy tale-optimistic and unrealistic, a pair of authors from Scripps Institution of Oceanography at UC San Diego has predicted a minimum warming of 2.4° C (4.3° F) above pre-industrial levels.

And even an increase that is seemingly that small, falls within the IPCC’s (Intergovernmental Panel on Climate Change) threshold range of temperature increase that would see a massive loss of biodiversity, deglaciation and a variety of other negative environmental effects.

Arctic Cold Holding Carbon Explosion Intact… For Now

800px-Looking_back_to_Little_Port_Walter_-_NOAA A new study has shed light on the possible dangers being kept intact by the Arctic cold. According to the study, published in the British journal Nature Geoscience, climate change’s warming of the Arctic ice could end up releasing massive stores of carbon dioxide from the Arctic soil. In fact, the carbon stores have been severely misrepresented, and could be as much as 60% more than previously estimated.

Needless to say, the warming caused by carbon dioxide, that would release more carbon dioxide, is not a helpful turn of events.

What’s worse, according to one commentary on the research which was published this past Sunday, is that the current models predicting future climate change currently do not take in to account the possible release of these stores of carbon.

Warming Climate Study Looks at Global Scale

8186_webWe spend a lot of our time looking at research and studies that focuses on one particular aspect of the planet. Rarely does anyone spend the time to look at a multitude of aspects, to acquire a look at the overall picture. It seems like science is all about proving the big picture by proving a small portion of that big picture.

However critics will be the first to tell us that the small picture does not necessarily reflect the big picture. Just like a jigsaw of the planet Earth, you might think that the whole planet is blue if they are the only pieces of the puzzle you saw, but look at it in total, and you’ll find a few solid bits as well!

So that is why a new study has assembled information never before gathered together in one spot. The study looked at a vast array of physical and biological systems across our planet, and looked at if and how they were being affected by global warming. The study appears in the May 15 issue of the journal Nature.

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