IADO   05364
INSTITUTO ARGENTINO DE OCEANOGRAFIA
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Sauce grande shallow lake water temperature estimation using satellite data
Autor/es:
C. FERNANDA FORNERÓN, M. CINTIA PICCOLO, FACUNDO CARMONA Y RAÚL RIVAS
Lugar:
Mulranny Co. Mayo
Reunión:
Workshop; GLEON 14; 2012
Institución organizadora:
Global Lake Ecological Observatory Network (GLEON)
Resumen:
A high number of shallow lakes characterize the Pampean
plain of the Buenos Aires province (Argentina). Sometimes it is difficult to access to them in order to
obtained simultaneously measurements. Therefore, alternative tools are needed to
obtain a systematization of the data that will allow the
study of spatial dynamics.
In the literature many works prove that satellite data is an
exceptional tool for acquiring information
about lakes parameters with an adequatespatial, spectral and temporal resolution. The aim of this study is to estimate and validatethe temperature of the water in the
Sauce Grande shallow lake from Enhanced Thematic Mapper Plus (ETM +) and
Thematic Mapper (TM) sensors and in situ measurements recorded with a buoy. Eight satellites images were used to calculate the Sauce Grande water temperature using theradiative transfer equation estimating atmospheric parameters (transmissivity,
up and down radiance emitted by the atmosphere) with the MODTRAN 4.0 code. The results
showed a BIAS of -0,7 ° C and a standard deviation of 0,8 ° C for combinationTM / ETM +.The correlation between the measured water
temperate from the buoy and the temperature calculated from satellite sensors were high. An equation was obtained
for the Sauce Grande shallow lake to estimate water temperature from satellite
data.