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Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999

FROM VOLUME 7, NUMBER 3, MARCH 1994

PROFESSIONAL PUBLICATIONS...

• TREND ANALYSIS: APPROACHES

Item #d94mar54

"Detecting Climate Variations and Change: New Challenges for Observing and Data Management Systems," T.R. Karl (Global Clim. Lab., NCDC-NOAA, Fed. Bldg., Asheville NC 28801), R.G. Quayle, P.Ya. Groisman, J. Clim., 6(8), 1481-1494, Aug. 1993.

Needed improvements include greater interaction between network designers and climatologists, detection of time-dependent biases within datasets, management of inhomogeneities in observing systems, and documentation of how climate has or has not changed.

Item #d94mar55

"The Use of Natural C14 and C13 in Soils for Studies on Global Climate Change," P. Beckerheidmann (Inst. Bodenkunde, Univ. Hamburg, Allende Pl. 2, W-2000 Hamburg 13, Ger.), H.W. Scharpenseel, Radiocarbon, 34(3), 535-540, 1992.

Depth distribution curves of natural C14 and C13 in soil profiles can be used to infer changes in climate. A change from C3 to C4 plants due to a change in atmospheric CO2 content can be easily detected.