Showing papers on "Weather station published in 1977"

Computation of Surface Fluxes from Climatological and Synoptic Data

Abstract: The effect of using climatological and synoptic atmospheric data commonly available at oceanic locations on the computations of surface fluxes was examined. The data used in this study are a 10-year time series of surface meteorological measurements from Ocean Weather Station P (50°N, 145°W). Examination of the cumulative covariances of the quantities used in bulk transfer calculations of fluxes show that to estimate the stress and sensible heat flux requires measurements at intervals of 2 days or less but that long- term averages or less frequent samples may be used to estimate the latent heat flux. A comparison of the values of monthly wind stress and latent beat flux as calculated from the data organized into the format of the Marine Climatic Atlas with the directly calculated values show good agreement between the two methods. The sensible heat flux deviates more seriously, particularity in months of small fluxes. The effect on computing surface fluxes from surface weather chart data was exam...

Technique to determine wind statistics in remote locations. Final report

Abstract: A technique has been developed to predict wind statistics in remote locations where wind data are usually not available. The technique uses historical wind data from a synoptic weather station together with a statistical prediction model to obtain data from which wind statistics can be developed. The form of the statistical model and its parameter estimates were developed from simulations for the region of interest that, in turn, were based on a hydrodynamic model. Predictions and evaluations were made in and around the city of St. Louis. The best predictions of wind statistics were made at locations near the center of the city where the simulations were best. The accuracy of the simulations depended on the parameters used to describe the forcing functions. It was found that a major source of error in the predictions can be attributable to the discrete nature of the wind data from the synoptic weather station which was used as the basis for determining the wind statistics.

The impact of weather on the two varieties of winter jowar at Sholapur

Abstract: The paper analyses the relationship between different weather factors like rainfall, minimum and maximum temperatures as independent variables and winter jowar yield as the dependent variable by two methods, namely, (a) the Fisher's technique of regression integral and (b) the selected periods of regression function. For a discontinuous phenomenon such as rainfall at Sholapur, the Fisherian technique seems to be not quite appropriate. The 22-year data analysed was collected at the crop weather station located in Sholapur (Maharashtra). The estimated values of yield by the Fisherian technique applied to the maximum temperature and by the selected periods method as applied to rainfall are found to be quite good in agreement.