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| Titel |
EUROSPEC: at the interface between remote-sensing and ecosystem CO2 flux measurements in Europe |
| VerfasserIn |
A. Porcar-Castell, A. Mac Arthur, M. Rossini, L. Eklundh, J. Pacheco-Labrador, K. Anderson, M. Balzarolo, M. P. Martin, H. Jin, E. Tomelleri, S. Cerasoli, K. Sakowska, A. Hueni, T. Julitta, C. J. Nichol, L. Vescovo |
| 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 ; 12, no. 20 ; Nr. 12, no. 20 (2015-10-27), S.6103-6124 |
| Datensatznummer |
250118140
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| Publikation (Nr.) |
 copernicus.org/bg-12-6103-2015.pdf |
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| Zusammenfassung |
| Resolving the spatial and temporal dynamics of gross primary productivity
(GPP) of terrestrial ecosystems across different scales remains a challenge.
Remote sensing is regarded as the solution to upscale point observations
conducted at the ecosystem level, using the eddy covariance (EC) technique,
to the landscape and global levels. In addition to traditional vegetation
indices, the photochemical reflectance index (PRI) and the emission of
solar-induced chlorophyll fluorescence (SIF), now measurable from space,
provide a new range of opportunities to monitor the global carbon cycle
using remote sensing. However, the scale mismatch between EC observations
and the much coarser satellite-derived data complicate the integration of
the two sources of data. The solution is to establish a network of in situ spectral
measurements that can act as a bridge between EC measurements and remote-sensing data. In situ
spectral measurements have already been conducted for many
years at EC sites, but using variable instrumentation, setups, and
measurement standards. In Europe in particular, in situ spectral measurements remain
highly heterogeneous. The goal of EUROSPEC Cost Action ES0930 was to promote
the development of common measuring protocols and new instruments towards
establishing best practices and standardization of these measurements. In
this review we describe the background and main tradeoffs of in situ
spectral measurements, review the main results of EUROSPEC Cost Action, and
discuss the future challenges and opportunities of in situ spectral measurements
for improved estimation of local and global estimates of GPP over
terrestrial ecosystems. |
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