EUROSPEC: at the interface between remote-sensing and ecosystem CO2 flux measurements in Europe

Albert Porcar-Castell, Alasdair MacArthur, Micol Rossini, Lars Eklundh, J Pachero-Labrador, Karen Anderson, Manuela Balzarolo, M. Pilar Martin, H. Jin, Enrico Tomelleri, S Cerasola, S Sakowska, A Hueni, T Julitta, Caroline Nichol, Loris Vescovo

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

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 solarinduced
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
Original languageEnglish
Article number10.5194/bg-12-6103-2015
Pages (from-to)6103-6124
Number of pages21
Publication statusPublished - 2015


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