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Volume 7 Number 22:  2 June 2004

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

Editorial
The Establishment and Demise of the Medieval Nordic Settlements on Greenland: The Role of Natural Climate Change: A set of three research papers in the 2004 March issue of The Holocene documents the role of natural climate change in fostering the settlement of Greenland by seafaring Norsemen prior to the end of the first millennium AD, as well as its role in bringing about the demise of the transplanted Nordic culture some five hundred years later.

Subject Index Summaries
Urban CO2 Dome (Other Cities): How do the urban CO2 domes of various cities around the world compare with each other and with that of Phoenix, Arizona, USA in terms of their origins and magnitudes?

Agriculture (Species - Alfalfa): How will the upward trajectory of the air's CO2 content impact the growth and development of this important forage crop in the years and decades ahead?

Journal Reviews
Late 20th Century Drying of the Sahel: Real or Imagined?: Apparently, we've all believed the same wrong thing for many years.

The Recent Climate Regime Shift in the Northeast Pacific: It is difficult to detect these periodic shifts in climatic and hydrographic conditions until they have been in place for a while; but observations of the past few years suggest that the most recent such shift occurred in 1998.  What are its ramifications?

Selecting Crop Cultivars to Capitalize on Rising Atmospheric CO2 Concentrations: Research on rice demonstrates how choosing the proper cultivar can greatly enhance grain yield as the air's CO2 content continues to rise.

Nighttime Temperatures Influence Daytime Photosynthesis in Cottonwood Trees: How does the former affect the latter?  And how is this phenomenon impacted by the unique nature of real-world day/night climate change?

CO2 Effects on Isoprenoid Emissions from Oak Trees Growing in a Water-Stressed Environment: Evidence continues to accumulate for the environmentally-beneficial tendency for atmospheric CO2 enrichment to reduce isoprene emissions from vegetation.