Recent content by mspelto
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Mid-Piacenzian Arctic: Warm Climate & Seasonally Ice-Free Oceans
The main source of the amplification seen is the heat released from the water. Think of a different but related amplification. The Great Lakes famous for their lake effect snows. The snow results from water evaporated and heat lost from the lakes. This snow amplification system shuts off...- mspelto
- Post #39
- Forum: Earth Sciences
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Mid-Piacenzian Arctic: Warm Climate & Seasonally Ice-Free Oceans
For Wang and others to be correct we need an amplification. And an amplification does appear to be underway. I was impressed with this paper that I was a peer reviewer for. http://www.the-cryosphere.net/3/11/2009/tc-3-11-2009.pdf. The emphasis is on observed temperature anomalies and...- mspelto
- Post #31
- Forum: Earth Sciences
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Amazon Data Contradicts Glacial Aridity Hypothesis Of The Ice Age
I am not sure where the Amazon aridity strawman comes from. Ice core data has indicated the LGM was a wetter time in the region. This from a decade ago. In working on LGM reconstructions in the 1980's for CLIMAP the Amazon was not particularly arid either in our work...- mspelto
- Post #10
- Forum: Earth Sciences
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Trees under retreating glaciers
Xnn does a good job indicating why the Greenland ice Core record shown does not reflect current temperature. It is true we have had lots of recent examples of wood exposed from retreating glaciers that dates to the early Holocene 5000-7000 BP. In many cases the same glaciers started at...- mspelto
- Post #28
- Forum: Earth Sciences
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Trees under retreating glaciers
I have found a number of wood samples from beneath glaciers in Washington and Alaska. They have all dated from the period of 4000-6000 BP. In general glacier were more restricted then. The Neoglacial advances then occurred, with the Little Ice Age in the Pacific Northwest being as large as...- mspelto
- Post #24
- Forum: Earth Sciences
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Question about Thermohaline Circulation
The key is that ocean currents are density driven and cold temps and added salinity increase the density of water. Changes in meltwater inputs and temperature can then alter the formation and movement of deep water. Wallace Broecker came up with the original conveyor belt idea. I had a meeting...- mspelto
- Post #5
- Forum: Earth Sciences
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Climate Update: Investigating Differences between Surface & Satellite Data
The arctic temperatures as measured by satellite and noted by http://climate.uah.edu/25yearbig.jpg" NASA and RSS show the warming. The link is for the 25 year mean anomaly from UAH, certainly a conservative value. The low number of stations causes a bias for groups such as HADCRUT that do not...- mspelto
- Post #4
- Forum: Earth Sciences
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Himalayan Glaciers: Research & Findings by Govt of India
The Gangotri Glacier is an important glacier, as it runoff is used for hydropower in 2005 the Tehri Dam was finished on the Bhagirathi River, it is a 2400 mw facility that began producing hydropower in 2006. It is retreating significantly, but given a 30 km long glacier a retreat of even 20 m...- mspelto
- Post #40
- Forum: Earth Sciences