Humor4u

Above image, from the National Institute of Polar Research in Japan, shows Arctic sea ice extent at a record low for the time of year, on July 4, 2021, at 8.4 million km². [ for earlier animations, see discussions ] Subsequently, the  NSIDC  also indicated that Arctic sea ice was at record low extent for the time of year, on July 5, 2021, at 8.867 million km² (image above).  Arctic sea ice is getting very thin rapidly, threatening the  latent heat tipping point  to get crossed soon.        The  U.S. Navy  animation on the right shows Arctic sea ice thickness (in m) for the 30 days up to July 31, 2021, with eight days of forecasts included.  The very thin Arctic sea ice featuring on the  University of Bremen  image further below on the right indicates that there is now virtually no buffer left to consume further incoming heat.  Is the Buffer is gone? [ disappearing sea ice north of Greenland ] An often-used threshold for a Blue Ocean Event (BOE) is that a BOE occurs when sea ice exten

On July 1, 2021 pm, the MetOp-1 satellite recorded a mean methane level of 1935 ppb at 293 mb. [ from  earlier post  ] This mean methane level translates into 387 ppm CO₂e at a 1-year Global Warming Potential (GWP) of 200.  This GWP is appropriate in the light of the danger of a huge burst of methane erupting from the seafloor of the Arctic Ocean, which would, due to the abrupt nature of such an eruption, make its impact felt instantaneously. Carbon dioxide on July 1, 2021, was 418.33 ppm, as illustrated by the  NOAA image  below. Together, this CO₂e level of methane and this carbon dioxide level add up to 805.33 ppm CO₂e, which is 394.67 ppm CO₂e away from the 1200 ppm clouds tipping point which on its own could increase the temperature rise by a further 8°C, as discussed in an  earlier post . This 394.67 ppm CO₂e, again at a 1-year GWP of 200, translates into 1973 ppb of methane. In other words, a methane burst of 1973 ppb or about 5 Gt of methane would suffice to trigger the clo