http://www.cnr.it/ontology/cnr/individuo/prodotto/ID294745
Operational monitoring of daily evapotranspiration by the combination of MODIS NDVI and ground meteorological data: application and validation in Central Italy. (Articolo in rivista)
- Type
- Label
- Operational monitoring of daily evapotranspiration by the combination of MODIS NDVI and ground meteorological data: application and validation in Central Italy. (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Alternative label
Maselli F., Papale D., Chiesi M., Matteucci G., Angeli L., Raschi A., Seufert G. (2014)
Operational monitoring of daily evapotranspiration by the combination of MODIS NDVI and ground meteorological data: application and validation in Central Italy.
in Remote sensing of environment
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Maselli F., Papale D., Chiesi M., Matteucci G., Angeli L., Raschi A., Seufert G. (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
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- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- IBIMET-CNR, Via Madonna del Piano, 10, 50019 Sesto Fiorentino, FI, Italy
DIBAF -- University of Tuscia, Via S. Camillo Lellis, 01100 Viterbo, Italy
ISAFOM-CNR, Via Cavour 4-6, 87036 Rende, CS, Italy
LAMMA, Via Madonna del Piano, 10, 50019 Sesto Fiorentino, FI, Italy
EC-JRC, Inst. for Environment and Sustainability, Via E. Fermi, 2749, 21027, Ispra, VA, Italy (literal)
- Titolo
- Operational monitoring of daily evapotranspiration by the combination of MODIS NDVI and ground meteorological data: application and validation in Central Italy. (literal)
- Abstract
- Time-varying crop coefficients (Kc) can be obtained from remotely sensed data and combined with daily potential
evapotranspiration estimates for the operational prediction of actual evapotranspiration (ETA). This approach,
however, presents relevant limitationswhen applied in mixed, water stressed ecosystems. The current paper addresses
these issues by introducing two innovations. First, fractional vegetation cover (FVC) is derived fromNDVI
and utilized to split evaporating and transpiring surfaces, whose behavior is simulated under fully watered conditions
by the use of generalized Kc. Next, the short termeffect of water shortage is taken into account by means
of downregulating factors which are based on meteorological observations (potential evapotranspiration and
rainfall) and act differently for vegetated and not vegetated surfaces. The new method is tested against latent
heat of evaporation (LE) measurements taken by the eddy covariance technique in six sites of Central Italy representative
of various forest and herbaceous ecosystems. In this experiment the method is driven by 1-km meteorological
data obtained from a pan-European archive and by 250 m MODIS NDVI imagery. Satisfactory
accuracies are obtained in all experimental situations, which encourages the application of the method for the
operational monitoring of ETA on regional scale. (literal)
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