Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
1972 Proceedings of the 8th International Symposium on Remote Sensing of Environment
Author: 1972 Proceedings of the 8th International Symposium on Remote Sensing of Environment
Author: Remote Sensing for Environmental Sciences
Author: E. SchandaPublisher: Springer Science & Business Media
ISBN: 3642662366
Category : Science
Languages : en
Pages : 381
Book Description
The public's serious concern about the uncertainties and dangers of the conse quences of human activities on environmental quality demands policies to control the situation and to prevent its deterioration. But far-reaching decisions on the environmental policy are impaired or even made impossible as long as the relevant ecological relations are not sufficiently understood and large-scale quantitative information on the most important parameters is not available in sufficient quality and quantity. The techniques of remote sensing offer new ways of procuring data on natural phenomena with three main advantages - the large distance between sensor and object prevents interference with the environmental conditions to be measured, - the potentiality for large-scale and even global surveys yields a new dimension for the investigations of the environmental parameters, - the extremely wide, spectral range covered by the whole diversity of sensors discloses many properties of the environmental media not detectable within a single wave band (as e.g. the visible). These significant additions to the conventional methods of environmental studies and the particular qualification of several remote sensing methods for quantitative determination of the natural parameters makes this new investigation technique an important tool both to the scientists studying the ecological relationship and the administration in charge of the environmental planning and protection.
Summaries Eighth International Symposium on Remote Sensing of Environment, October 2-6, 1972
Author: NASA Authorization for Fiscal Year 1978
Author: United States. Congress. Senate. Committee on Commerce, Science, and TransportationPublisher:
ISBN:
Category :
Languages : en
Pages : 652
Book Description
Utilization of Thermal Emittance Data to Monitor Soil Moisture and Subsurface Groundwater
Author: Jerald Arden TunheimPublisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 124
Book Description
Trophic Classification of Selected Colorado Lakes
Author: Richard J. BlackwellPublisher:
ISBN:
Category : Eutrophication
Languages : en
Pages : 230
Book Description
EPA-600/4
Author: Proceedings of the NASA Earth Resources Survey Symposium, Houston, Texas, June 1975
Author: Publisher:
ISBN:
Category : Astronautics in earth sciences
Languages : en
Pages : 630
Book Description
Specification of Current and Future Cloud Amounts and Ceilings from Satellite Data
Author: John H. ConoverPublisher:
ISBN:
Category : Ceilometer
Languages : en
Pages : 32
Book Description
Objective methods and their accuracies for deriving current and six-hour forecasts of cloud amount and ceiling from satellite data are presented. Data from the visible and IR window bands were tested to develop relationships. The IR data did not significantly improve the results. The visible data were carefully calibrated, navigated, and normalized for solar elevation and bidirectional reflectance. Cloud motions were also used for the six-hour forecasts. The data were reduced to values of average brightness and its standard deviation over 1/2 deg by 1/2 deg areas before analysis. RMSE of current cloud amounts (on a scale of 0 to 1) are about 0.25 and for six hours later about 0.35. The occurrence of a ceiling/no ceiling was specified correctly 80% and 70% of the time at zero and six hours, respectively. Various methods are shown for minimization of ceiling errors over different height ranges. In general, RMSE of specified and forecast ceilings range from 4000 to 6000 ft at low levels to 9000 to 10,000 ft at mid and high levels. (Author).