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Volume 6 Number 12:  19 March 2003

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

Current Editorial
African Food Security: The Need for a "Doubly Green Revolution": All of our best efforts will be insufficient to avert a massive food shortfall in Africa in the decades ahead without the indispensable help we can freely receive from what the world's climate alarmists ironically claim to be the biosphere's worst enemy.

Subject Index Summaries
Growth Response to Very High CO2 Concentrations: Nearly all plants exhibit increases in photosynthesis and biomass production in response to atmospheric CO2 enrichment; but too much of a good thing can sometimes be bad, for both people and plants.  Is this the case with carbon dioxide?

Solar Climatic Effects (Recent Influence): There are many.  They are complex.  Some are small and subtle.  Others are obvious and huge.  The ultimate climatic consequences of their simultaneous operations have yet to be conclusively determined.  Until this feat is accomplished, the role of anthropogenic CO2 emissions in driving climatic change cannot be accurately assessed.

Carbon Sequestration Commentary
Hurricanes and Oceanic Carbon Sequestration: Another Negative Feedback Process to Slow Global Warming: Rising temperatures may reduce hurricane frequency and intensity, thereby lowering the sea-to-air flux of CO2 and reducing the rate at which CO2 accumulates in the atmosphere.

Current Journal Reviews
Millennial-Scale Shifting of Moisture Regimes in Western Canada: What can they tell us about natural climate change?  Much more than climate alarmists would like us to know.

A 2000-Year Tibetan Temperature History: What does it tell us about the natural variability of earth's climate?  How does that knowledge help us identify the cause of the global warming of the past century and a half?

Decadal to Millennial Climate Cyclicity: A Response to Solar Activity or Tidal Action?: There's hardly room anymore to consider the possibility of climate modification by atmospheric CO2 enrichment or depletion, so strong is the evidence for the external forcing of climate across a whole spectrum of time scales.

Effects of Elevated CO2 on C4 Grasses: Nearly all of earth's C3 plants respond positively to increases in the air's CO2 content.  However, people still debate whether or not C4 plants respond in a similar manner.  In this paper, the authors investigate this question.

Effects of Elevated CO2 on a Mature Sweetgum Stand: Atmospheric CO2 enrichment generally increases photosynthetic rates and biomass production in seedlings and saplings.  However, the responses of mature trees in closed-canopy forests are poorly understood and deserve greater attention, which this paper provides.