Global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence

Global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence

Guanter, Luis et al.

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Bibliographic Details
Main Authors: Guanter, Luis, Zarco-Tejada, Pablo J., Griffis, Timothy J.
Other Authors: German Research Foundation
Format: artículo biblioteca
Published: National Academy of Sciences (U.S.) 2014-03-25
Subjects:Carbon fluxes, Spaceborne spectroscopy, Earth observation, Carbon modeling, Crop productivity,
Online Access:http://hdl.handle.net/10261/101088
http://dx.doi.org/10.13039/501100001659
http://dx.doi.org/10.13039/100000104
http://dx.doi.org/10.13039/100007304
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spelling dig-ias-es-10261-1010882021-11-22T12:58:23Z Global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence Guanter, Luis Zarco-Tejada, Pablo J. Griffis, Timothy J. German Research Foundation National Aeronautics and Space Administration (US) Keck Institute for Space Studies Carbon fluxes Spaceborne spectroscopy Earth observation Carbon modeling Crop productivity Guanter, Luis et al. Photosynthesis is the process by which plants harvest sunlight to produce sugars from carbon dioxide and water. It is the primary source of energy for all life on Earth; hence it is important to understand how this process responds to climate change and human impact. However, model-based estimates of gross primary production (GPP, output from photosynthesis) are highly uncertain, in particular over heavily managed agricultural areas. Recent advances in spectroscopy enable the space-based monitoring of sun-induced chlorophyll fluorescence (SIF) from terrestrial plants. Here we demonstrate that spaceborne SIF retrievals provide a direct measure of the GPP of cropland and grassland ecosystems. Such a strong link with crop photosynthesis is not evident for traditional remotely sensed vegetation indices, nor for more complex carbon cycle models. We use SIF observations to provide a global perspective on agricultural productivity. Our SIF-based crop GPP estimates are 50-75% higher than results from state-ofthe- art carbon cycle models over, for example, the US Corn Belt and the Indo-Gangetic Plain, implying that current models severely underestimate the role of management. Our results indicate that SIF data can help us improve our global models for more accurate projections of agricultural productivity and climate impact on crop yields. Extension of our approach to other ecosystems, along with increased observational capabilities for SIF in the near future, holds the prospect of reducing uncertainties in the modeling of the current and future carbon cycle. The work by L.G., Y.Z., and M.V. has been funded by the Emmy Noether Programme (GlobFluo project) of the German Research Foundation. J.J. is supported by the National Aeronautics and Space Administration (NASA) Carbon Cycle Science program (NNH10DA001N) and G.P.-C. is supported by NASA Soil Moisture Active Passive Science Definition Team (08-SMAPSDT08-0042). We also thank the W. M. Keck Foundation for funding the New Methods to Measure Photosynthesis from Space workshop held at the Caltech Keck Institute for Space Studies. Peer Reviewed 2014-08-25T07:26:35Z 2014-08-25T07:26:35Z 2014-03-25 2014-08-25T07:26:36Z artículo http://purl.org/coar/resource_type/c_6501 doi: 10.1073/pnas.1320008111 issn: 1091-6490 Proceedings of the National Academy of Sciences of the USA 111(14): E1327-E1333 (2014) http://hdl.handle.net/10261/101088 10.1073/pnas.1320008111 http://dx.doi.org/10.13039/501100001659 http://dx.doi.org/10.13039/100000104 http://dx.doi.org/10.13039/100007304 24706867 http://dx.doi.org/10.1073/pnas.1320008111 Sí none National Academy of Sciences (U.S.)
institution IAS ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-ias-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IAS España
topic Carbon fluxes
Spaceborne spectroscopy
Earth observation
Carbon modeling
Crop productivity
Carbon fluxes
Spaceborne spectroscopy
Earth observation
Carbon modeling
Crop productivity
spellingShingle Carbon fluxes
Spaceborne spectroscopy
Earth observation
Carbon modeling
Crop productivity
Carbon fluxes
Spaceborne spectroscopy
Earth observation
Carbon modeling
Crop productivity
Guanter, Luis
Zarco-Tejada, Pablo J.
Griffis, Timothy J.
Global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence
description Guanter, Luis et al.
author2 German Research Foundation
author_facet German Research Foundation
Guanter, Luis
Zarco-Tejada, Pablo J.
Griffis, Timothy J.
format artículo
topic_facet Carbon fluxes
Spaceborne spectroscopy
Earth observation
Carbon modeling
Crop productivity
author Guanter, Luis
Zarco-Tejada, Pablo J.
Griffis, Timothy J.
author_sort Guanter, Luis
title Global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence
title_short Global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence
title_full Global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence
title_fullStr Global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence
title_full_unstemmed Global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence
title_sort global and time-resolved monitoring of crop photosynthesis with chlorophyll fluorescence
publisher National Academy of Sciences (U.S.)
publishDate 2014-03-25
url http://hdl.handle.net/10261/101088
http://dx.doi.org/10.13039/501100001659
http://dx.doi.org/10.13039/100000104
http://dx.doi.org/10.13039/100007304
work_keys_str_mv AT guanterluis globalandtimeresolvedmonitoringofcropphotosynthesiswithchlorophyllfluorescence
AT zarcotejadapabloj globalandtimeresolvedmonitoringofcropphotosynthesiswithchlorophyllfluorescence
AT griffistimothyj globalandtimeresolvedmonitoringofcropphotosynthesiswithchlorophyllfluorescence
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