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Volume 9 Number 20:  17 May 2006

Temperature Record of the Week
This issue's Temperature Record of the week is from Parowan, UT.  Visit our U.S. Climate Data section to plot and view these data for yourself.

Editorial
3500 Years of West-Central European Climate History: Archaeological and historical sources, plus tree-ring and radiocarbon data, reveal the existence and likely driving force of the millennial-scale oscillation of climate that has produced our modern warm period.

Medieval Warm Period Record of the Week
This issue's Level 1 Medieval Warm Period Record of the Week is from off the coast of the Peruvian Shelf.  To access the entire Medieval Warm Period Project's database, click here.

Subject Index Summary
Little Ice Age (Solar Influence - Other): Multiple globally-distributed data sets comprised of many-parameter proxies combine to confirm that the Little Ice Age was created and sustained by a low level of solar activity.

Journal Reviews
North and South Polar Sea Ice Extents: What do the most up-to-date satellite data show?

A UK Modeler's Personal Perspective on the Status of Climate Modeling: A practitioner of the trade makes some rather candid assessments of where the enterprise stands today.

The Paleoenvironment of Petaluma Marsh, Northern California, USA: How has it changed over the past seven centuries?

What Rising CO2 Concentrations May Be Saving Us From: The first-ever long-term free-air ozone fumigation experiment to be conducted on a semi-natural grassland community reveals some ominous consequences of the ubiquitous air pollutant.

Carbon Sequestration by a New Zealand Pasture in Slightly CO2-Enriched Air: Once again, increases in soil carbon content are found to follow increases in the air's CO2 content. And soil nitrogen contents may be increasing too.