Methane emissions in the far North have taken a turn for the worse. Atmospheric methane does not spread evenly around the globe as rapidly as CO2 does. Some of the reporting stations in the far North are now independently showing rapid increases, a sign of new levels of activity originating at nearby sources. These are potentially huge sources, where the methane is subject to release principally by thawing processes. Once it enters the atmosphere it immediately produces an enhanced greenhouse effect in the underlying region, which can induce yet more rapid thawing. This is a frightening development, one that cannot be ignored. Thanks to Robert Fanney for his report and imagery.
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A description of Earth having warmed by 4C degrees. This was written by Dr. Joe Romm, a climate scientist who is highly involved in public activity. Unless there are some fairly drastic changes our world is now on track for a 4C warming outcome, so everyone should take a look at what that would mean. Romm gives us an overview in terms of living conditions for both humans and other forms of life, with emphasis on potential for extinction. One subject quite new to me describes genetic diversity that commonly exists within any given species, which is important in its own way and is ranked among the prospects for considerable loss.
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The outlook for ocean species as waters continue warming. This is from a new study that looks at what ocean temperatures will be like, and the effects on life, after the atmosphere warms by more than 2C. The effects are profound. One that is here considered is the potential decline of phytoplankton, which are the primary source of food for a large part of all animal life in the oceans. In general, most marine species depend on water temperature to control their inner body temperature, which usually needs to be kept within a narrow desired range.
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The prospect for increasing typhoon wind speeds as oceans warm. Enough records are available to show that speeds have increased by an average of about 10% in the last 40 years, attributed mainly to warmer surface waters. “The destruction caused by a typhoon doesn’t just rise in line with wind speed. A 10% rise translates to a 33% increase in destructiveness, the researchers say.” Their study projects a further rise in speed of 14% by the end of this century, a conclusion that has drawn a range of reactions from other scientists. (Another recent study has suggested that total damage caused by increased intensity of typhoons in the future could be partially offset by a reduction of frequency.)
http://www.carbonbrief.org/blog/2015/05/warming-oceans-could-mean-typhoons-are-14-stronger-by-2100/?
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