Sentences with phrase «glacial maximum see»

Not exact matches

In particular, Annan and Hargreaves (2006) used a Bayesian statistical approach that combines information from both 20th century observations and from last glacial maximum data to produce an estimate of climate sensitivity that is much better constrained than by either set of observations alone (see our post on this, here).

In terms of the comments about the Holocene record, etc, and Gavin's saying that there is «no evidence» of such methane burps then: first, let us all also acknowledge that some of the world's major paleoclimate and methane experts HAVE seen evidence of exactly that [i.e., Nisbet, Have sudden large releases of methane from geological reservoirs occurred since the Last Glacial Maximum, and could such releases occur again?

And they cut off the data at the point where the last ice age was just ending so that one could not see if their methodology would extend back in time and reach the generally accepted -5.0 C of the last glacial maximum, which it clearly would not since they have the Holocene maximum at only +0.4 C.

You can also see that coming off the last glacial maximum, the lake warmed, as did the rest of the Earth, then when the temperature dropped during the Younger Dryas, so did the temperature of the lake.

You can see from the below chart that around the last glacial maximum 20,000 years ago CO2 was under 200 ppm.

I haven't seen the Hansen paper, but expect that he will be using a somewhat too cold estimate for the Last Glacial Maximum (ie, 6C colder than modern rather than the newer estimate of about 4C).

There are many tens of thousands of observations of sea - level change since the last glacial maximum, the overwhelming trends recognised in these observations is inconsistent with any significant sea - level fluctuations in the last two thousand years (see for example Lambeck, K., Yokoyama, Y., Purcell, A., 2002.

As in the case of the Last Glacial Maximum (see Section 6.4), it is uncertain whether tropical sensitivity is really as small as such reconstructions suggest.

Including tests with simulations of the last glacial maximum, the Mid-Holocene or the Last Millennium greatly expands the range of model evaluation (see Schmidt (2010) for more discussion).

In a time period 21,000 years ago called the Last Glacial Maximum, at the height of the last Ice Age, the Southwest was wetter than is seen now — a lot wetter — while the Northwest was much drier, the researchers report.

Some EMICs have been used to investigate both the climate of the last glacial maximum (see Section 8.5) as well as to investigate the cause of the collapse of the conveyor in global warming experiments (Stocker and Schmittner, 1997; Rahmstorf and Ganopolski, 1999) while others have been used to undertake a number of sensitivity studies including the role of sub-grid scale ocean mixing in global warming experiments (Wiebe and Weaver, 1999).