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Volume 12 Number 7:  18 February 2009

Editorial
Sea Level Response to Global Warming: Is there a reasonably well defined relationship between mean global sea level rise and increases in mean global near-surface air temperature?

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from Lop Nur, Tarim Basin, Xinjiang, China.

Subject Index Summary
Permafrost (Impact of Thawing on CO2): Will global warming soon reach a "tipping point" that leads -- via permafrost thawing -- to the release of massive amounts of carbon dioxide to the atmosphere, leading to even more catastrophic increases in temperature?

Journal Reviews
North Atlantic Deep Water Formation: How has it been behaving lately?

Detecting Change in the Atlantic Meridional Overturning Circulation: How long will it take to be confident of any deviation from the MOC's relative constancy over the past half-century or more?

Atmospheric CO2 on A Cold Winter's Night in Nagoya City: How high did its concentration rise relative to its daytime low in the Japanese metropolis?

Increasing Climatic Variability: How might its occurrence impact ecosystem biodiversity and resilience?

Responses of the Great Reed Warbler to Global Warming: Has the going been easy or tough for the long-distance migrant bird?