His session allowed him to talk about how
human climate change in national parks is melting glaciers, raising sea level, killing trees, and causing other impacts.
Trenberth 2015 suggested that for Hurricane Sandy, «the subways and tunnels may not have flooded without warming - induced increase in sea level and storm intensity and size, putting a potential price tag
of human climate change in this storm in the tens of billions of dollars.»
And, more recently, the massive Tibetan earthquake of this past weekend, resulting in the loss of 4,000 lives, has called into question
current human climate change's role in geological upheaval events.
After all, the irony of extreme events is that the larger the magnitude the smaller the fractional contribution
by human climate change.
«Observation of melting glaciers in Glacier National Park and North Cascades National Park has contributed to the global database that tells us glaciers are receding and
human climate change is the cause,» notes Patrick Gonzalez, NPS's national climate change scientist.
Past field research has shown that
human climate change has already shifted vegetation at the biome level upslope and towards the Poles or the Equator..
There's no analog event in the past to compare with the rapidity of
human climate change.
«Those who continue to talk in certain terms of how local weather extremes are the result of
human climate change are failing to heed all the available evidence.»
TMelting of small glaciers and ice caps TSea level rise Predicted changes of human climate change