INVESTIGADORES
PICCOLO Maria Cintia
congresos y reuniones científicas
Título:
NET RADIATION ESTIMATES IN A SALT MARSH OF THE
Autor/es:
VITALE, A.; PICCOLO, M.C.
Lugar:
Bahía Blanca
Reunión:
Congreso; ECSA 44: SCIENCE AND MANAGEMENT OF ESTUARIES AND COASTS: A TALE OF TWO HEMISPHERES; 2008
Institución organizadora:
Estuarine Coastal Science Association-Instituto Argentino de Oceanografía
Resumen:
Energy
budget studies of coastal salt marshes depend critically on good net radiation
estimates. The knowledge of net radiation is a necessary parameter to define
surface processes. But it is not often measured by meteorological stations. In
most practical situations the net radiation is inferred by parameterizations
from simple global solar radiation measurements. The aim of this work is to
report on a net radiation parameterization scheme. Linear regression relations
between net radiation (RN) and global solar radiation (Rs) are presented for Villa
del Mar salt marsh in the Bahía Blanca Estuary. Radiation measurements were
performed using a net radiometer and a pyranometer. Simultaneous measurements
of water temperature and meteorological data were made at the salt marsh. The
model requires the global solar radiation, near-surface air temperature, water
temperature and vapour pressure data. A set of statistical procedures was used
to evaluate the performance of the equations: bias (BIAS), root mean square
error (RMSE), mean absolute error (MAE) and percent mean relative error (PMRE).
The mean relative error (PMRE) was approximately 18% and the root mean square
error (RMSE) was approximately 22W m-2 for all time series. After
this study, it is evident that a simple model based on surface shortwave
radiation, water temperature and meteorological parameters could provide
appropriate net radiation estimates of the salt marsh.