It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Yes, the Earth is warming up.
...an interpretation that is independently tested through a mineral magnetic provenance analysis of catchment samples. Minimum glacier input is indicated between 6700-5700 cal yr BP, probably reflecting a situation when most glaciers in the catchment had melted away, whereas the highest glacier activity is observed around 600 and 200 cal yr BP....
“....The onset of the LEAP occurred within less than two decades, demonstrating the existence of a sharp threshold, which must be near 416 Wm2, which is the 65oN July insolation for 118 kyr BP (ref. 9). This value is only slightly below today’s value of 428 Wm2. Insolation will remain at this level slightly above the glacial inception for the next 4,000 years before it then increases again....
www.nap.edu...
The ice age ended in one year
“We have analysed the transition from the last ice age to our current warm interglacial period and there is such an abrupt change in climate that it is as if someone just pushed a button”, explains Dorthe Dahl-Jensen, professor at the Center for Ice and Climate at the Niels Bohr Institute at the University of Copenhagen.
atlantisonline.smfforfree2.com...
....the June 21 insolation minimum at 65N during MIS 11 is only 489 W/m2, much less pronounced than the present minimum of 474 W/m2. In addition, current insolation values are not predicted to return to the high values of late MIS 11 for another 65 kyr. We propose that this effectively precludes a ‘double precession-cycle’ interglacial [e.g., Raymo, 1997] in the Holocene without human influence....
web.pdx.edu... (NOTE: pdf has been removed from internet)
....As summer insolation declined through the late Holocene, summer temperatures cooled and the local ice sheet margin expanded. Gradual, insolation-driven millennial-scale temperature trends in the study area were punctuated by several abrupt climate changes, including a major transient event recorded in all five lakes between 4.3 and 3.2 ka, which overlaps in timing with abrupt climate changes previously documented around the North Atlantic region and farther afield at ∼4.2 ka.....
www.sciencedirect.com...
Lesson from the past: present insolation minimum holds potential for glacial inception
"....Because the intensities of the 397 ka BP and present insolation minima are very similar, we conclude that under natural boundary conditions the present insolation minimum holds the potential to terminate the Holocene interglacial. Our findings support the Ruddiman hypothesis [Ruddiman, W., 2003. The Anthropogenic Greenhouse Era began thousands of years ago. Climate Change 61, 261–293], which proposes that early anthropogenic greenhouse gas emission prevented the inception of a glacial that would otherwise already have started....
www.sciencedirect.com...
“Briefly, the data indicate that cooling into the Younger Dryas occurred in a few prominent decade(s)-long steps, whereas warming at the end of it occurred primarily in one especially large step (Figure 1.2) of about 8°C in about 10 years and was accompanied by a doubling of snow accumulation in 3 years; most of the accumulation-rate change occurred in 1 year. (This matches well the change in wind-driven upwelling in the Cariaco Basin, offshore Venezuela, which occurred in 10 years or less [Hughen et al., 1996].)”
Abrupt Temperature Changes in the Western Mediterranean over the Past 250,000 Years
www.sandiego.edu...
Predictable orbital variations led to insolation changes, which triggered less frequent but very intense oscillations. Accordingly, the last glacial inception (substage 5d) has been attributed to a connection between orbital forcing and thermohaline circulation beyond a freshwater threshold within the ocean-atmosphere-sea-ice system...
Yes, the Earth is warming up.
No it is not. It warmed up from the coldest part of the Holocene interglacial, the Little Ice Age.
For the last 17 years it has not warmed up at all! It has plateaued and may be starting to cool.