So when did the most-recent warming begin?
A Brief History of Ice Ages and Warming
How about 18,000 years ago, as the earth started warming its way out of the Pleistocene Ice Age-- a time when much of North America, Europe, and Asia lay buried beneath great sheets of glacial ice. The planet's always been in constant flux, dominated by ice ages and glaciers for the past several million years. Ultimately, we have merely been enjoying a temporary reprieve from the deep freeze - and this began WAY before the industrial age began. Again, the idea that we can take partial statistics from the last 150 years and apply them accurately to a 4.5 billion year old planet is laughable - at best, we can only show some trends, but not causes, and particularly we cannot KNOW we aren't just in normal cyclings of the planet.
Approximately every 100,000 years Earth's climate warms up temporarily - during interglacial periods - which appear to last approximately 15,000 to 20,000 years before regressing back to a cold ice age climate. At year 18,000 and counting our current interglacial vacation from the Ice Age is much nearer its end than its beginning. THINK about that - MANY known cycles which have lasted 15,000 - 20,000 years - which means our ability to apply 150 years of partial data to computer models created with all kinds of assumptions, and many unknowns, simply are not going to produce CERTAINTY about a tiny window of climate time. That's just a fact that those foaming at the mouth over climate changes refuse to consider - that their cherished man-made "doomsday" warming narrative may well not be accurate because of the long, past climate history, many assumptions, and many currently unknowable variables. And it's already proven FAR different that what was being said 10, 15 and 20 years ago. But don't let facts get in the way - just keep cherrypicking partial - and as noted, often-massaged data - so as to fit the desired narrative.
Global warming during Earth's current interglacial warm period has greatly altered our environment and the distribution and diversity of all life. For example:
- Approximately 15,000 years ago the earth had warmed sufficiently to halt the advance of glaciers, and sea levels worldwide began to rise.
- By 8,000 years ago the land bridge across the Bering Strait was drowned, cutting off the migration of men and animals to North America from Asia.
- Since the end of the Ice Age, Earth's temperature has risen approximately 16 degrees F and sea levels have risen a total of 300 feet! Forests have returned where once there was only ice.
Earth Ice Over Last 700,000 Years
- Over the past 750,000 years of Earth's history, Ice Ages have occurred at regular intervals, of approximately 100,000 years each.
(Source: Courtesy of Illinois State Museum)
Notice that the facts above are taken from many cycles, EACH which have been many thousands of years in the making. Compare that to the razor-thin data used to support the GW doomsday scenarios. And NONE of the above is to make a case that man-made caused warming isn't possible - or perhaps even significantly dangerous. But it IS to note the absurdity of those who are convinced by such a thin slice of data - often massaged, and so often politically driven. Once one asks important questions related to the data - how it's been plugged in, point out the immense deficiencies inherent in modelling assumptions, particularly based upon such slim (time-wise) data, and of such partial (far more available and accurate from cities in the West - which don't accurately reflect areas away from cities) - they are vilified and called fools, as "being deluded by their anti-scientific bias and/or their blissful ignorance."
So, those who just smirk and sarcastically shout, "global warming deniers!" - please, instead, intelligently address some of these things (above) that are known facts and that bring considerable doubts into any supposed "proof" of what has been going on with the climate. Because if you don't do so, it tells me that you are merely clinging to a political or PC narrative, when you, yourself, haven't addressed the factual issues raised. There's a whole heck of a lot more "inconvenient truths" out there than Al Gore and co. are willing to acknowledge. Why?