Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Actual evapotranspiration by use of MODIS data |
| Abstract | The aim of this research is to assess a technique to retrieve actual evapotranspiration (ET) maps from remote sensing images by the combination of two different procedures. The first one, known as triangle method, computes the evapotranspiration fraction (EF) defined as the ratio LE/Rn, where Rn is the net radiation at the surface and LE is the latent heat flux. LE is directly proportional to ET. In order to retrieve LE, and consequently the surface evapotranspiration, a second procedure computes the net radiation of the investigated area. Therefore, by inversion, it is possible to obtain an estimate of the ET. The validation of these variables, net radiation and evapotranspiration derived from MODIS data, has been undertaken on the Capitanata area, Southern Italy, by comparison of model results with in-situ measurements provided by the Consorzio per la Bonifica della Capitanata di Foggia. © 2012 IEEE. |
| Source | IGARSS 2012, Munich, Germany, 22-27 July 2012 |
| Keywords | Actual evapotranspirationNet RadiationPrecision FarmingRemote Sensing |
| Year | 2012 |
| Type | Contributo in atti di convegno |
| DOI | 10.1109/IGARSS.2012.6352064 |
| Authors | Matarrese, Raffaella; Portoghese, Ivan; Vurro, Michèle; Soldo, Pietro |
| Text | 299573 2012 10.1109/IGARSS.2012.6352064 Scopus 2 s2.0 84873209633 Actual evapotranspiration Net Radiation Precision Farming Remote Sensing Actual evapotranspiration by use of MODIS data Matarrese, Raffaella; Portoghese, Ivan; Vurro, Michele; Soldo, Pietro Consiglio Nazionale delle Ricerche; Consorzio per la Bonifica della Capitanata The aim of this research is to assess a technique to retrieve actual evapotranspiration ET maps from remote sensing images by the combination of two different procedures. The first one, known as triangle method, computes the evapotranspiration fraction EF defined as the ratio LE/Rn, where Rn is the net radiation at the surface and LE is the latent heat flux. LE is directly proportional to ET. In order to retrieve LE, and consequently the surface evapotranspiration, a second procedure computes the net radiation of the investigated area. Therefore, by inversion, it is possible to obtain an estimate of the ET. The validation of these variables, net radiation and evapotranspiration derived from MODIS data, has been undertaken on the Capitanata area, Southern Italy, by comparison of model results with in situ measurements provided by the Consorzio per la Bonifica della Capitanata di Foggia. © 2012 IEEE. http //www.scopus.com/record/display.url eid=2 s2.0 84873209633 origin=inward IGARSS 2012 Munich, Germany 22 27 July 2012 Internazionale Contributo Contributo in atti di convegno ivan.portoghese PORTOGHESE IVAN raffaella.matarrese MATARRESE RAFFAELLA michele.vurro VURRO MICHELE |