(2010). For the current operational products, assessments are routinely performed using in situ matchups available from the SeaWiFS Bio-Optical Archive and Storage System (SeaBASS). %PDF-1.6 %���� Optical remote … %%EOF doi:10.1364/ao.49.005545, Bailey, S. W., & Werdell, P. J. 3135-3155. Example forestry ground spectra acquired in the Boreal Ecosystem Atmosphere Study (BOREAS) are presented to illustrate raw field measurements and final reflectance products. Finally, the attenuating effects of absorbing atmospheric gases and scattering losses due to transmittance of the water-leaving radiance through the atmosphere must be corrected. Remote Sensing of Environment 102, 12-23. doi:10.1016/j.rse.2006.01.015, Gordon, H. R., & Wang, W. (1994). 0000006362 00000 n 0000003954 00000 n (2006). Reflectance terms such as BRDF, HDRF, BRF, BHR, DHR, black-sky albedo, white-sky albedo, and blue-sky albedo are defined, explained, and exemplified, while separating conceptual from measurable quantities. Geophysical Research Letters 33(6), L06617. Ying Yong Sheng Tai Xue Bao. Current address: Routes AstroEngineering, Kanata, Ont., Canada K2K 2B1. <<33A60FF06D11D34C9B36F233BFDC4EDD>]>> Registered in England & Wales No. The approach for converting raw target and panel radiance spectra to calibrated reflectance involves five major processing stages: (i) panel calibration, (ii) solar zenith angle computations, (iii) spectral and angular interpolation, (iv) computation of reflectance, and (v) automated batch mode execution of stages (ii)–(iv) for processing large data volumes. moisture), the surface roughness as well as the geometric … We use cookies to improve your website experience. 0000004628 00000 n 0000007216 00000 n 0000005974 00000 n  |  We use cookies to help provide and enhance our service and tailor content and ads. 0000015845 00000 n The retrieved water-leaving radiances, $L_{w}(\lambda)$, at each sensor wavelength, $\lambda$, are then normalized to remove remaining effects of solar orientation and atmospheric attenuation of the downwelling radiation to produce normalized water-leaving radiance, $nL_{w}(\lambda)$, which is often expressed as a radiance reflectance, $R_{rs}(\lambda)$ or Remote Sensing Reflectance, by simply dividing by the mean extraterrestrial solar irradiance, $F_{0}(\lambda)$. 0000003200 00000 n Yousefi S, Pourghasemi HR, Emami SN, Pouyan S, Eskandari S, Tiefenbacher JP. 0000008439 00000 n $f_{p}(\lambda)$ = is an adjustment for effects of polarization. Reflectance nomenclature in the remote sensing and laboratory/field measurement literature has loosely followed the framework of Nicodemus et al. For a full description of the atmospheric correction algorithm, including details on the estimation of each term in the above equations and the operational process through which aerosol contributions are estimated and removed, the reader is referred to the document titled Atmospheric Correction for Satellite Ocean Color Radiometry and the associated Web Book on Atmospheric Correction. Applied Optics 33(33), 7754-7763. doi:10.1364/ao.33.007754, Zibordi, G., Mélin, F., Berthon, J. F. (2006). Clipboard, Search History, and several other advanced features are temporarily unavailable. This algorithm derives the spectral radiance upwelling from beneath the ocean surface, normalized by the downwelling solar irradiance and expressed as spectral "remote sensing" reflectance, $R_{rs}(\lambda)$ at each sensor wavelength, $\lambda$, in the visible domain with units of sr-1. 0000013591 00000 n As a proportion, reflectance should be a value between 0 (everything is absorbed and/or transmitted) and 1 (everything is reflected). 0000009894 00000 n This review highlights how remote sensing influences entomological research by enabling scientists to nondestructively monitor how individual insects respond to treatments and ambient conditions.

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