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Carbon cycle

Technical Report:

Abstract

This report contains a review of literature on the subjects of the carbon cycle, the increase of the atmospheric CO/sub 2/ concentration and the possible impacts of an increased CO/sub 2/ concentration on the climate. In addition to this survey, the report discusses the questions that are still open and the resulting research needs. During the last twenty years a continual increase of the atmospheric carbon dioxide concentration by about 1-2 ppm per years has been observed. In 1958 the concentration was 315 ppm and this increased to 336 ppm in 1978. A rough estimate shows that the increase of the atmospheric carbon dioxide concentration is about half of the amount of carbon dioxide added to the atmosphere by the combustion of fossil fuels. Two possible sinks for the CO/sub 2/ released into the atmosphere are known: the ocean and the biota. The role of the biota is, however, unclear, since it can act both as a sink and as a source. Most models of the carbon cycle are one-dimensional and cannot be used for accurate predictions. Calculations with climate models have shown that an increased atmospheric CO/sub 2/ concentration leads to a warming of the earth's surface and lower  More>>
Publication Date:
May 01, 1982
Product Type:
Technical Report
Report Number:
KFK-3285
Reference Number:
ERA-08-008292; EDB-83-018389
Subject:
54 ENVIRONMENTAL SCIENCES; CARBON CYCLE; ENVIRONMENTAL EFFECTS; CARBON DIOXIDE; AIR POLLUTION; BIOSPHERE; CLIMATES; FOSSIL-FUEL POWER PLANTS; REVIEWS; THERMAL POLLUTION; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; DOCUMENT TYPES; ENVIRONMENT; OXIDES; OXYGEN COMPOUNDS; POLLUTION; POWER PLANTS; THERMAL POWER PLANTS; 500200* - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989)
OSTI ID:
8137353
Research Organizations:
Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.). Abt. fuer Angewandte Systemanalyse
Country of Origin:
Germany
Language:
German
Other Identifying Numbers:
Other: ON: DE82750962
Availability:
NTIS (US Sales Only), PC A04/MF A01.
Submitting Site:
HEDB
Size:
Pages: 66
Announcement Date:
Aug 01, 1982

Technical Report:

Citation Formats

Jaeger, J, Halbritter, G, and Neumann-Hauf, G. Carbon cycle. Germany: N. p., 1982. Web.
Jaeger, J, Halbritter, G, & Neumann-Hauf, G. Carbon cycle. Germany.
Jaeger, J, Halbritter, G, and Neumann-Hauf, G. 1982. "Carbon cycle." Germany.
@misc{etde_8137353,
title = {Carbon cycle}
author = {Jaeger, J, Halbritter, G, and Neumann-Hauf, G}
abstractNote = {This report contains a review of literature on the subjects of the carbon cycle, the increase of the atmospheric CO/sub 2/ concentration and the possible impacts of an increased CO/sub 2/ concentration on the climate. In addition to this survey, the report discusses the questions that are still open and the resulting research needs. During the last twenty years a continual increase of the atmospheric carbon dioxide concentration by about 1-2 ppm per years has been observed. In 1958 the concentration was 315 ppm and this increased to 336 ppm in 1978. A rough estimate shows that the increase of the atmospheric carbon dioxide concentration is about half of the amount of carbon dioxide added to the atmosphere by the combustion of fossil fuels. Two possible sinks for the CO/sub 2/ released into the atmosphere are known: the ocean and the biota. The role of the biota is, however, unclear, since it can act both as a sink and as a source. Most models of the carbon cycle are one-dimensional and cannot be used for accurate predictions. Calculations with climate models have shown that an increased atmospheric CO/sub 2/ concentration leads to a warming of the earth's surface and lower atmosphere. Calculations show that a doubling of the atmospheric CO/sub 2/-concentration would lead to a net heating of the lower atmosphere and earth's surface by a global average of about 4 W m/sup -2/. Greater uncertainties arise in estimating the change in surface temperature resulting from this change in heating rate. It is estimated that the global average annual surface temperature would change between 1.5 and 4.5 K. There are, however, latitudinal and seasonal variations of the impact of increased CO/sub 2/ concentration. Other meteorological variables (e.g. precipitation, wind speed etc.) would also be changed. It appears that the impacts of the other products of fossil fuel combustion are unlikely to counteract the impacts of CO/sub 2/ on the climate.}
place = {Germany}
year = {1982}
month = {May}
}