Climate change is a challenge for current generations

The average Canadian born in our shiny new year is expected to live until the final decade of the century.

Twin girls born minutes apart with different birthdays: Dec 31, 2013 and Jan 1, 2014 (Credit Valley Hospital in Mississauga, Ontario)

According to the World Health Organization, the life expectancy of Canadians is 82 years, which technically means a child born in 2014 will live, on average, until 2096, provided there is no change in mortality rates.

Predictions from climate models that you see on the news typically extend out to the end of the century. When scientists say that the planet may warm by 2-4 degrees C by the “end of the century”, they are typically describing the average of the years 2091 through 2100, though sometimes the average of the years 2081 through 2100.

In other words,  the climate predictions and the newborns have about the same lifespan.

A child born today will experience all the widely discussed impacts of climate change — the rise in temperature, the rise in the oceans, the change in heat extremes, the melting of sea ice, the decline of coral reefs, you name it.

We need to stop describing climate change as a problem for “future generations”. Those generations are here now.

Is climate change choking our oceans?

by Matthew Wagstaff

Hiding away in the ocean section of the new IPCC report is a lesser known result of global climate change, ocean deoxygenation.  Many effects of climate change such as increasing global temperatures, rising sea levels and ocean acidification are already well-known and somewhat in the public eye, however there are many other effects that are less well-known and less understood. Deoxygenation of the oceans is one of these lesser-known effects and is being caused by a number of factors. While the acidification of the ocean is caused by the uptake of carbon dioxide from the atmosphere, the deoxygenation of the ocean is mainly due to the increasing temperatures of the surface waters, which has two effects: the solubility effect and the stratification effect. From the IPCC report:

  “It is very likely that global warming will lead to [further] declines in dissolved O2 in the ocean interior through warming-induced reduction in O2 solubility and increased ocean stratification. This will have implications for nutrient and carbon cycling, ocean productivity and marine habitats (Keeling et al., 2010).” Continue reading