Espacialização da pressão atmosférica na região do Vale do Submédio São Francisco

The objectives of this study were to obtain and validate the best numerical powers for the interpolation method of the inverse of the distance (IPD) on spatialization of atmospheric pressure values in the Sao Francisco San Francisco Sub mid, for periods of one year and the seasons (winter, spring, summer and autumn). The atmospheric pressure was spatialized using the IPD method from data measured in automatic weather stations 14, in a region Sao Francisco San Francisco Sub mid. The values obtained were interpolator power equal to 4.8, 5.0, 5.1, 5.9 and 1.5 for the annual season, winter, spring, summer and autumn, respectively. The daily variation in the average relative error calculated, using data from atmospheric pressure, with the best value from the interpolator power obtained for the season year (4.8) was on average 0.05%. The mean error values were small when compared with the instrumental error.Keywords: interpolator, numerical powers, agrometeorological