Journal ArticleDOI
BRDF models to predict spectral reflectance and emissivity in the thermal infrared
William C. Snyder,Zhengming Wan +1 more
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Modifications to the linear kernel bidirectional reflectance distribution function (BRDF) models from Roujean et al. and from Wanner et al are presented to synthesize the TIR optical properties of a scene pixel from laboratory component measurements to estimate scene optical properties over a wide spectral range.Abstract:
This paper presents modifications to the linear kernel bidirectional reflectance distribution function (BRDF) models from Roujean et al. and from Wanner et al. that extend the spectral range into the thermal infrared (TIR). The present authors application is to synthesize the TIR optical properties of a scene pixel from laboratory component measurements. The angular reflectance and emissivity are needed to convert the radiance of a pixel as measured from space to land-surface temperature. The kernel models will be applied to develop a look-up table for the MODIS land-surface temperature algorithm to estimate the spectral, angular scene emissivity from land cover classification. A shrub scene and a dense canopy scene illustrate qualitative differences in angular emissivity that would not be evident without the kernel model modifications. They conclude that the modified models provide a simple and efficient way to estimate scene optical properties over a wide spectral range.read more
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Validation of the land-surface temperature products retrieved from Terra Moderate Resolution Imaging Spectroradiometer data
TL;DR: In this paper, the authors presented the status of land-surface temperature (LST) standard products retrieved from Earth Observing System (EOS) Moderate Resolution Imaging Spectroradiometer (MODIS) data.
Journal ArticleDOI
Quality assessment and validation of the MODIS global land surface temperature
TL;DR: In this paper, an evaluation of the Earth Observing System (EOS) MODIS thermal infrared bands and the status of land surface temperature (LST) version-3 standard products retrieved from Terra MODIS data is presented.
Journal ArticleDOI
Assessment with satellite data of the urban heat island effects in Asian mega cities
TL;DR: In this paper, the authors used remote sensing for comparative assessment of surface urban heat island (UHI) in 18 mega cities in both temperate and tropical climate regions and applied a Gaussian approximation to quantify spatial extents and magnitude of individual UHIs for inter-city comparison.
Journal ArticleDOI
Classification-based emissivity for land surface temperature measurement from space
TL;DR: In this paper, a pixel is classified as one of fourteen 'emissivity classes' based on the conventional land cover classification and dynamic and seasonal factors, such as snow cover and vegetation index.
Journal ArticleDOI
Land Surface Emissivity Retrieval From Different VNIR and TIR Sensors
José A. Sobrino,J.C. Jimenez-Muoz,Guillem Soria,M. Romaguera,Luis Guanter,Jose Moreno,Antonio Plaza,Pablo Martínez +7 more
TL;DR: The application and adaptation of two existing operational algorithms for land surface emissivity retrieval from different operational satellite/airborne sensors with bands in the visible and near-infrared (VNIR) and thermal IR (TIR) regions are discussed.
References
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