Evaluation of evapotranspiration in an alpine forest catchment using satellite remotely sensed data

Michele Meroni; Pietro Alessandro Brivio; Roberto Colombo; Pier Paolo Ghezzi; Claudia Giardino; Mario A. Gomarasca

doi:10.1117/12.332712

11 December 1998 Evaluation of evapotranspiration in an alpine forest catchment using satellite remotely sensed data

Michele Meroni, Pietro Alessandro Brivio, Roberto Colombo, Pier Paolo Ghezzi, Claudia Giardino, Mario A. Gomarasca

Proceedings Volume 3496, Earth Surface Remote Sensing II; (1998) https://doi.org/10.1117/12.332712
Event: Remote Sensing, 1998, Barcelona, Spain

Abstract

In this study daily spatially distributed evapotranspiration maps were estimated by integrating meteorological data-set, ground measurements, satellite images and Digital Elevation Model in a Geographic Information System environment to resolve latent heat flux as residual term of the one- dimensional surface energy balance equation. Study area was the Masino catchment located in northern alpine environment (SO, Italy), mainly dominated by forest land cover and characterized by steep slopes, variable aspects, cast shadows and great relief energy. A digital elevation model with pixel size of 25 X 25 m, was necessary to correct the Landsat TM scenes for the relief displacement using an orthorectification model and to correct the atmospherically effects using an improved image-based inversion algorithm based on a radiative transfer model. The procedure for estimating energy balance components was based on the evaluation of the energy balance equation distributing each component on the whole catchment. A simplified procedure was applied to relate instantaneous latent heat flux to actual daily evapotranspiration and the results were compared with that computed in correspondence to the meteorological station.

Citation Download Citation

Michele Meroni, Pietro Alessandro Brivio, Roberto Colombo, Pier Paolo Ghezzi, Claudia Giardino, and Mario A. Gomarasca "Evaluation of evapotranspiration in an alpine forest catchment using satellite remotely sensed data", Proc. SPIE 3496, Earth Surface Remote Sensing II, (11 December 1998); https://doi.org/10.1117/12.332712

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available