WebThe diffuse attenuation coefficient of downwelling irradiance (Kd) is an essential parameter for inland waters research by remotely sensing the water transparency. Lately, Kd semi-analytical algorithms substituted the empirical algorithms widely employed. The purpose of this research was to reparametrize a semi-analytical algorithm to estimate Kd … WebJul 9, 1999 · We used R rs at 555 nm because it is a SeaWiFS [Sea-viewing Wide Field-of-view Sensor ] band and, ... Our in situ measurements of spectral downwelling irradiance in the APFZ indicated that the 0.1% level of surface irradiance at 490 nm is, on average, 94 m. To a first approximation, we assume the 100 m depth delimits the upper layer where …
Biogeochemical Argo Measured Variables Downwelling …
WebDec 26, 2016 · Remote sensing reflectance (Rrs) contains the spectral colour information of the water body (below the sea surface). Rrs is the ratio between water-leaving radiance (Lw, above the sea surface) and downwelling irradiance (Ed, above the sea surface). WebDec 15, 2024 · In total 15 measurements of downwelling irradiance were taken on the ground, by measuring the radiance of a horizontally placed white Spectralon target … chicago bears alshon jeffery
2. Basic Data Acquisition — User Manual for Spectronon Version …
WebThe downwelling and upwelling irradiances (radiant flux per unit of area) are convenient measurements to make at sea to characterize the penetration of daylight into the water … WebUpwelling and downwelling spectral (320–920 nm) distributions and photosynthetic active radiation (PAR) intensities were measured below a first-year land-fast sea ice in a western Greenland fjord with and without a snow cover. Time-series of surface upwelling PAR, downwelling PAR, and under-ice PAR were also obtained. Spectral distributions of … WebOct 1, 1996 · The sensor includes an internal spectral/radiometric calibration source, a self contained spectrally resolved downwelling sensor, and complete line of sight and GPS positioning information. The instrument is now completing an extensive set of calibration and performance measurements and is operating from a Cessan TU-206 single engine aircraft. google bungalows for sale