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| Titel |
Plant functional type classification for earth system models: results from the European Space Agency's Land Cover Climate Change Initiative |
| VerfasserIn |
B. Poulter, N. MacBean, A. Hartley, I. Khlystova, O. Arino, R. Betts, S. Bontemps, M. Boettcher, C. Brockmann, P. Defourny, S. Hagemann, M. Herold, G. Kirches, C. Lamarche, D. Lederer, C. Ottlé, M. Peters, P. Peylin |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 8, no. 7 ; Nr. 8, no. 7 (2015-07-31), S.2315-2328 |
| Datensatznummer |
250116467
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| Publikation (Nr.) |
 copernicus.org/gmd-8-2315-2015.pdf |
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| Zusammenfassung |
| Global land cover is a key variable in the earth system with feedbacks on
climate, biodiversity and natural resources. However, global land cover
data sets presently fall short of user needs in providing detailed spatial and
thematic information that is consistently mapped over time and easily
transferable to the requirements of earth system models. In 2009, the
European Space Agency launched the Climate Change Initiative (CCI), with land
cover (LC_CCI) as 1 of 13 essential climate variables targeted for
research development. The LC_CCI was implemented in three phases: first
responding to a survey of user needs; developing a global, moderate-resolution land cover data set for three time periods, or epochs (2000, 2005,
and 2010); and the last phase resulting in a user tool for converting land
cover to plant functional type equivalents. Here we present the results of
the LC_CCI project with a focus on the mapping approach used to convert
the United Nations Land Cover Classification System to plant functional types
(PFTs). The translation was performed as part of consultative process among
map producers and users, and resulted in an open-source conversion tool. A
comparison with existing PFT maps used by three earth system modeling teams
shows significant differences between the LC_CCI PFT data set and those
currently used in earth system models with likely consequences for modeling
terrestrial biogeochemistry and land–atmosphere interactions. The main
difference between the new LC_CCI product and PFT data sets used currently
by three different dynamic global vegetation modeling teams is a reduction in
high-latitude grassland cover, a reduction in tropical tree cover and an
expansion in temperate forest cover in Europe. The LC_CCI tool is flexible
for users to modify land cover to PFT conversions and will evolve as phase 2
of the European Space Agency CCI program continues. |
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