The Climate Change Factor in Extreme Weather Events

The 4 Mile Creek area near Boulder, Colorado, was devastated by an extreme rain/flood event in September 2013.

An op-ed in today’s New York Times, How We Know It Was Climate Change,  is well worth reading. The author of the op-ed, N.S. Diffenbaugh, lays out the rationale for a link between climate change and extreme weather events. Diffenbaugh’s op-ed is based on a journal article written by himself and others that was published in the Proceedings of the National Academy of Sciences (PNAS – 3/17), Quantifying the influence of global warming on unprecedented extreme climate events.

Both the op-ed and the PNAS article are essential reads for the new year.

A Second Warning – Forcing Earth’s Ecosystems Beyond Their Breaking Point

The Athabaska glacier in the Columbia Icefields, Alberta, Canada, has receded 1.5 km and lost over 50% of its volume during the last 125 years (Photo: D. Hanneman)

Twenty-five years after the Union of Concerned Scientists and over 1700 independent scientists published their “World Scientists’ Warning to Humanity”, a new group of scientists (bolstered by 15,364 scientist signatories from 184 countries) have again issued a warning that humanity has not made significant progress in mitigating environmental challenges.

The recently published viewpoint of these scientists and signatories appears in the 11/13/17 issue of BioScience and can be read on line at “World Scientists’ Warning to Humanity: A Second Notice”. The authors review the 1992 warning of major environmental challenges and our response to it by:

we look back at their warning
and evaluate the human response
by exploring available time-series
data. Since 1992, with the exception
of stabilizing the stratospheric ozone
layer, humanity has failed to make
sufficient progress in generally solving
these foreseen environmental challenges,
and alarmingly, most of them
are getting far worse…

The newly published warning of our need to deal with these major challenges –  catastrophic climate change, deforestation, agricultural production associated with farming ruminants for meat consumption, and a sixth mass extinction event (just to name a few of them) – makes the reading of this viewpoint critical. It takes less than 10 minutes to read this, and – if you are a scientist, then sign on to support it. More than signing, find a way to become active in really dealing with these challenges.