Global Climate Change Digest: Main Page | Introduction | Archives | Calendar | Copy Policy | Abbreviations | Guide to Publishers


GCRIO Home ->arrow Library ->arrow Archives of the Global Climate Change Digest ->arrow January 1995 ->arrow PROFESSIONAL PUBLICATIONS... OF GENERAL INTEREST: CARBON CYCLE Search

U.S. Global Change Research Information Office logo and link to home

Last Updated:
February 28, 2007

GCRIO Program Overview

 

 

Library 
Our extensive collection of documents.

 

Get Acrobat Reader

Privacy Policy

Global Climate Change DigestArchives of the
Global Climate Change Digest

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

FROM VOLUME 8, NUMBER 1, JANUARY 1995

PROFESSIONAL PUBLICATIONS...
OF GENERAL INTEREST: CARBON CYCLE


Item #d95jan17

"Evidence for Interannual Variability of the Carbon Cycle from the [NOAA/CMDL] Global Air Sampling Network," T.J. Conway (CMDL, NOAA, 325 Broadway, Boulder CO 80303), P.P. Tans et al., J. Geophys. Res., 99(D11), 22,831-22,855, Nov. 20, 1994.

Extensive weekly sampling between 1981 and 1992 shows that the global CO2 growth rate has declined from a peak of ~2.5 ppm/yr in 1987-1988 to ~0.6 ppm/yr in 1992. A 2-D model analysis indicates that the low growth rate in 1992 is mainly due to an increase in the Northern Hemisphere CO2 sink, probably in the terrestrial biosphere. One possibility is the temperature-induced decrease in plant respiration due to cooling following the Mount Pinatubo eruption. However, the fluctuation is probably temporary, and a return to a higher growth rate is expected.


Item #d95jan18

"The Role of Deep Roots in the Hydrological and Carbon Cycles of Amazonian Forests and Pastures," D.C. Nepstad (Woods Hole Res. Ctr., POB 296, Woods Hole MA 02543), C.R. de Carvalho et al., Nature, 372(6507), 666-669, Dec. 15, 1994.

Uses rainfall, satellite and field data to estimate that half of the closed forests of Brazilian Amazonia depend on deep root systems to maintain green canopies during the dry season. As deep roots extract water they also provide carbon to the soil, and forest alteration that affects depth distributions of carbon inputs from roots may also affect net carbon storage.

  • Guide to Publishers
  • Index of Abbreviations

  • Hosted by U.S. Global Change Research Information Office. Copyright by Center for Environmental Information, Inc. For more information contact U.S. Global Change Research Information Office, Suite 250, 1717 Pennsylvania Ave, NW, Washington, DC 20006. Tel: +1 202 223 6262. Fax: +1 202 223 3065. Email: Web: www.gcrio.org. Webmaster:
    U.S. Climate Change Technology Program Intranet Logo and link to Home