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| Titel |
Future challenges of representing land-processes in studies on land-atmosphere interactions |
| VerfasserIn |
A. Arneth, L. Mercado, J. Kattge, B. B. B. Booth |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 9, no. 9 ; Nr. 9, no. 9 (2012-09-07), S.3587-3599 |
| Datensatznummer |
250007289
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| Publikation (Nr.) |
 copernicus.org/bg-9-3587-2012.pdf |
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| Zusammenfassung |
| Over recent years, it has become increasingly apparent
that climate change and air pollution need to be considered jointly for
improved attribution and projections of human-caused changes in the Earth
system. Exchange processes at the land surface come into play in this
context, because many compounds that either act as greenhouse gases, as
pollutant precursors, or both, have not only anthropogenic but also
terrestrial sources and sinks. And since the fluxes of multiple gases and
particulate matter between the terrestrial biota and the atmosphere are
directly or indirectly coupled to vegetation and soil carbon, nutrient and
water balances, quantification of their geographic patterns or changes over
time requires due consideration of the underlying biological processes. In
this review we highlight a number of critical aspects and recent progress in
this respect, identifying in particular a number of areas where studies have
shown that accounting for ecological process understanding can alter global
model projections of land-atmosphere interactions substantially.
Specifically, this concerns the improved quantification of uncertainties and
dynamic system responses, including acclimation, and the incorporation of
exchange processes that so far have been missing from global models even
though they are proposed to be of relevance for our understanding of
terrestrial biota-climate feedbacks. Progress has also been made regarding
studies on the impacts of land use/land cover change on climate change, but
the absence of a mechanistically based representation of human
response-processes in ecosystem models that are coupled to climate models
limits our ability to analyse how climate change or air pollution in turn
might affect human land use. A more integrated perspective is necessary and
should become an active area of research that bridges the socio-economic and
biophysical communities. |
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