Showing papers in "Remote Sensing of Environment in 1989"

TL;DR: In this article, stepwise multiple regression and deconvolution have been used to extract chemical information from foliar spectra, and concludes that both methods are useful, but neither is ideal.

TL;DR: In this paper, the ability of the Leaf Water Content Index (LWCI) to determine leaf relative water content (RWC) is tested on species with different leaf morphologies.

TL;DR: In this article, the spectral signatures of the Landsat TM images of the Sierra Nevada were analyzed to distinguish several classes of snow from other surface covers, and a number of TM images were used for automatic analysis of alpine snow cover.

TL;DR: In this article, the authors used Thematic Mapper data and other layers of geographic information to derive a forest fire hazard map, and compared the predicted hazard and the actual burned area.

TL;DR: In this paper, the corrected near-infrared reflectance was corrected for soil background (in particular differences in soil moisture content) and subsequently used for estimating LAI by applying the inverse of a special case of the Mitscherlich function.

TL;DR: An analytical reflectance model for a statistically homogeneous plant canopy has been developed in this article, considering both the single and the multiple scattering of radiation in the canopy and on the soil and accounting for the specular reflection of radiation on leaves and canopy hot spot.

TL;DR: In this article, the feasibility of detecting tropical forest successional age class and total biomass differences using Landsat-Thematic mapper (TM) data, was evaluated and it was shown that NDVI differences were not detectable for successional forests older than approximately 15-20 years.

TL;DR: In this paper, a model of the atmospheric downward radiance at the ground level is presented, which gives us the relative contributions of the direct solar beam and of the diffused radiation for different atmospheric turbidities and different solar incidence angles.

TL;DR: In this article, a multi-year, on-orbit radiometric calibration of the Landsat Thematic Mapper (TM) Band 6 was conducted at DOE's Pacific Northwest Laboratory.

TL;DR: In this article, the authors evaluated the use of NIR reflectance as an indicator of plant water status and found significant correlations between spectral reflectance at 810 nm, 1665 nm, and 2210 nm and leaf relative water content, total water potential, and turgor pressure.

TL;DR: In this paper, an optimization technique is applied to a physically-based surface reflectance model developed for the study of planetary surfaces, which is shown to be capable of predicting the observed bidirectional reflectances as well as directional-hemispherical reflectances; it can also build the complete radiance field over the upward hemisphere.

TL;DR: In this paper, the relative absorption band-depth (RBD) image was used to analyze the spectral expression of metamorphic minerals and rocks in the Ruby Mountains of southwestern Montana.

TL;DR: In this article, the authors evaluated surface energy balance components by combining satellite-based spectral data with on-site measurements of solar irradiance, air temperature, wind speed, and vapor pressure.

TL;DR: In this paper, the authors describe a technique that enables the measurements of reflectance and transmittance of narrow leaves or needles with spectroradiometers equipped with a light source and integrating sphere.

TL;DR: In this article, the relationship between radiometric data an and the leaf area index (LAI) and above-ground dry phytomass (GDM) was investigated during 11 development periods of 10-day intervals.

TL;DR: In this paper, a theoretical model that permits knowing the relationship between the temperature of the radiative system (the orange grove) and the temperatures of each part (ground, orange tree side, and orange tree top) was developed.

TL;DR: In this paper, the radiative temperature difference between 3.7 and 11 microns (Delta T) was investigated as a possible method for tracking dust outbreaks, and it was shown that the technique would be most sensitive to dust loading during the day when the Delta Ts are enhanced by reflection of 3. 7-micron solar radiation.

TL;DR: Changes in spectral properties induced in barley leaves by cereal mildew were evaluated to identify important regions in the 400–1100 nm spectrum which can be used to detect infected barley leaves.

TL;DR: In this article, the authors focused on the July 7 scene, in which aircraft from NASA, NCAR, and the British Meteorological Office repeatedly gathered data across a stratocumulus-fair weather cumulus transition.

TL;DR: In this article, the authors used spectral reflectance measurements made by a hand-held radiometer with Landsat TM spectral wavebands to compute remote sensing indices such as the normalized difference vegetation index.

TL;DR: In this article, the movement of a flood down the Darling River in central eastern Australia was monitored using AVHRR imagery during the observation period and thermal channels at night gave better contrast between the flood and the surrounding land than the visible and near infrared channels during the day.

TL;DR: In this article, the spectral reflectance curves of 84 soil samples were measured with a spectrophotometer in the laboratory for each sample, chromaticity coordinates were computed according to CIE standard methods and expressed in RGB (Red, Green, Blue) notation using colorimetric equations RGB values appear to be strongly correlated with the soil reflectance measured in the corresponding spectral bands of Landsat sensors.

TL;DR: In this paper, the effects of atmospheric attenuation on surface radiative temperatures obtained by the AVHRR over a tallgrass prairie area in the Flint Hills of Kansas are examined.

TL;DR: Soybean (Glycine max) plants were grown in hydroponic solutions treated with high concentrations of either arsenic or selenium as discussed by the authors, and they exhibited a shift to longer wavelengths of the red edge and lower reflectance between 550 nm and 650 wh when compared with control plants.

TL;DR: Although classification accuracies are slightly lower than those achieved with Landsat multispectral scanner imagery, on the SPOT imagery changes in much smaller parcels of land can be observed with greater spatial precision.

TL;DR: In this article, the authors collected thermal infrared multispectral scan (TIMS) data over a coniferous forest in western Oregon and used it for atmospheric radiance corrections.

TL;DR: A study of EDF matching with data from GOES-7 removed stripes from the image because the technique was used to generate a normalization look-up table from data taken on 18 May 1988, and the table was applied to image data obtained 2 weeks later, on 1 June 1988.

TL;DR: A method for calculating daily evapotranspiration from the daily surface energy budget using remotely sensed surface temperature and several meteorological variables is presented in this article, where Vaules of the coefficients are determined from simulations with a one-dimensional boundary layer model with vegetation cover.

TL;DR: In this article, the directional reflectance and transmittance factors of individual corn and soybean leaves were measured at source incidence angles (SIAs) 20, 45, and 70 deg and numerous view angles in the visible and NIR.

TL;DR: In this paper, a laboratory goniometer consisting of an He-Ne laser (632.8 nm), vertical leaf holder, and silicon photovoltaic detector was used to measure the bidirectional scattering (both transmittance and reflectance) of red oak and red maple.