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Politics : Politics of Energy -- Ignore unavailable to you. Want to Upgrade?

To: RetiredNow who wrote (11235)	7/13/2009 8:29:23 PM
From: Brumar89	Read Replies (1) \| Respond to of 86355

Oh, no, I said to myself as that link was coming up - this wouldn't have the discredited Michael Mann hockey stick chart, would it? Oh but yes, it did. There are few things in climate science more debunked that this. Try this: prisonplanet.com Their chart showing the mwp and lia is based on this: sciencemag.org Or this: wattsupwiththat.files.wordpress.com As for the claim the MWP was a local European effect, its been linked to the rise of Incan civilization: The new study is called “Putting the Rise of the Inca within a Climatic and Land Management Context” and was prepared by Alex Chepstow-Lusty, an English paleo-biologist working for the French Institute of Andean Studies, in Lima. Link to paper (PDF) is here (h/t to WUWT reader Corey) Here is the abstract: The rapid expansion of the Inca from the Cuzco area of highland Peru produced the largest empire in the New World between ca. AD 1400–1532. Although this meteoric rise may in part be due to the adoption of innovative societal strategies, supported by a large labour force and standing army, we argue that this would not have been possible without increased crop productivity, which was linked to more favourable climatic conditions. A multi-proxy, high-resolution 1200-year lake sediment record was analysed at Marcacocha, 12 km north of Ollantaytambo, in the heartland of the Inca Empire. This record reveals a period of sustained aridity that began from AD 880, followed by increased warming from AD 1100 that lasted beyond the arrival of the Spanish in AD 1532. These increasingly warmer conditions allowed the Inca and their predecessors the opportunity to exploit higher altitudes from AD 1150, by constructing agricultural terraces that employed glacial-fed irrigation, in combination with deliberate agroforestry techniques. ..... It was at this same time that the Classic Maya disappeared in Yucatan. It was also a time, on the other side of the Pacific when major migrations from East Asia took place into Polynesia, an indication of a major Niño event; a Niño sees western Pacific currents switch to flow from West to East. wattsupwiththat.com FWIW the medieval warm period and the following little ice age is no doubt linked to the rise and fall of classic anasazi culture in the American SW and with the rise and fall of the middle mississippian culture in the IL region. Also note: Medieval Warm Period proof - New Zealand Cave co2science.org Description Temperatures derived from an 18O/16O profile through a stalagmite found in a New Zealand cave (40.67°S, 172.43°E) revealed the Medieval Warm Period to have occurred between AD 1050 and 1400 and to have been 0.75°C warmer than the Current Warm Period. ff.org This mwp was clearly a worldwide phenomenom despite the efforts of Mann and other alarmists to make it disappear.