Tuesday, May 27, 2014

Global Warming Update: Polar Bears vs. Melting Glaciers

Let's discuss two concerns regarding the changing climate:  endangered Polar Bears vs. Melting Glaciers.

Which do you think is the biggest problem?

The findings may surprise you.

FearReality
Polar BearsThe extinction of the polar bears could upset the entire ecosystem of the Arctic and may represent a "canary in the gold mine" scenario.  If they are wiped out, what species is next?There are 20-25,000 polar bears and the populations have been stable for 30-40 years.  Many areas use hunting to keep the populations in check.  The biggest threat to polar bears right now is hunters. [1]
Melting GlaciersThe melting of glaciers is a serious problem.  The areas of the glaciers will be turned into deserts and the oceans will rise and flood islands and shoreline.The glaciers have been melting since the end of the Little Ice Age 400-500 years ago and will melt even without Global Warming.
"There is high confidence that current glacier extents are out of balance with current climatic conditions, indicating that glaciers will continue to shrink in the future even without further temperature increase." [2]

I think that a bigger risk than endangerment of polar bears and melting glaciers is the lack of honesty in the climate change discussion.  This disregard for reality creates skeptics.  If climate change is real and a risk for our futures, let's be honest about it so that we can work together to figure out a solution.

References:
[1] http://www.worldwildlife.org/species/polar-bear
Two months ago I reviewed the World Wildlife Foundation website regarding Polar Bears.  It clearly stated that the polar bear populations have been stable for the last 30-40 years and that hunting is used for population control.  The website has been redesigned and this information is no longer available.  The primary focus is on the risks of Climate Change.  The previous site had a map of subpopulations showing which ones were increasing in population, which were stable and which were decreasing.  The new site only states that 8 of 19 subpopulations are in decline.  Here is the old graphic (which I luckily saved)
[2] The Intergovernmental Panel on Climate Change (IPCC) Technical Summary for 2013 regarding melting glaciers.  http://www.climatechange2013.org/images/report/WG1AR5_TS_FINAL.pdf  page 41


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