It's refreshing to find a civil and thoughtful discussion via this forum on two of my passions - Lake Powell and science.
After years of hiking its shores, boating its side canyons and fishing its inlets, I embrace Lake Powell as a precious resource but a transient one. Nothing about it is natural, and nature will eventually reclaim it, as sure as the sun will rise tomorrow. Powell was born from science, technology, and tunnel vision - sort of a metaphor for our precarious modern society. We've built a house of cards, and as overallocation, population growth, and climate change poke at the edges, Powell will of course eventually return what water it has to the sea.
None of that is wrong or bad, just inevitable, and that's ok. Name a past civilization or human endeavor that has not eventually gone down the same road.
That's Lake Powell. What about science? How can we know why resources change? And how it works?
Science is a method to clear the fog, to get closer to the truth, to connect us to all that was and is, and to show us how it works. It's imperfect. Full of stops and starts, inching forward, circling back. But there is no better tool in the box. No other method has anywhere close to its track record. It's a double-edged sword, but the power it wields is undeniable.
I'm an atmospheric scientist, trained in physics and the scientific method. Here's how I learned to put science to work, building on a 400-year-old legacy: Observe something, wonder how and why, test your idea, repeat the test, have others poke at your idea, explore all angles, keep at it for years, build expertise, do the hard work, throw away opinion and wishful thinking, set aside anecdote and contrarianism, and compete with the best in the world. You're then a bit closer to the truth. Then, repeat it all again. What survives are the fittest ideas. Science put the Sun at the center, revealed the interconnection of all life, unleashed the Industrial Revolution, gave us cures for disease, put people on the moon, weaved the electronic web of knowledge, and gave us easy access to it. Science is indifferent to the outcome. We decide how to use, or to ignore, the knowledge gained. Vaccines, general relativity, and DNA are not political ideas, though they upset some people.
That the release of carbon dioxide from burning of fossil fuels is the main driver of a warming world is an idea not at all in debate in the scientific community. We're working on the details. We are still learning how regional climate is altered. Still understanding the feedbacks with the biosphere and ice-covered regions. But the big picture is clear. Perturb the climate by injecting a massive carbon source and it will respond. Heat builds up most where polar sea ice melts, letting the ocean absorb and retain that heat. This alters the patterns of jet stream winds, bringing more extremes in weather where most people live. Some places warm a lot, others less. More rain here, less there. The southwest U.S. is drying out with less snowpack, and though a warmer world plays a role, there is more to learn on how it will play out. But globally the trends are clear and easily understandable - add a lot of carbon to the air and you get a warmer, wetter world. There is no debate about that, no data inconsistent with that hypothesis.
Don't go to opinion or politics for science. Don't talk to an interest group or someone who profits from opinion. Don't google a graphic, cherry pick a fact, or search for a convenient quote. Go to the body of work of the global community of scientists. Look for summaries of the big picture from scientific societies, statements of the settled part of climate science based on a massive body of work, and acknowledgement of what's left to learn. Here are a few, from the American Meteorological Society, American Geophysical Union, European Geosciences Union. These aren't political statements, guesses, or opinions. These are our best current ideas, built with the strength of collaboration and expertise rather than wishful thinking or political influence.
(Adopted by the AMS Council on 15 April 2019)
www.ametsoc.org
EGU, the European Geosciences Union, is Europe’s premier geosciences union, dedicated to the pursuit of excellence in the Earth, planetary, and space sciences for the benefit of humanity, worldwide.
www.egu.eu