document: Extinction cross sections of realistic raindrops : data-bank established using T-matrix method and nonlinear fitting technique A new computer program is developed based on the T-matrix method to generate a large number of total -LRB- extinction -RRB- cross sections -LRB- TCS -RRB- values of the realistic raindrops that are deformed due to a balance of the forces that act on a drop failing under gravity , and were described in shape by Pruppacher and Pitter -LRB- 1971 -RRB- . These data for various dimensions of the raindrops -LRB- mean effective radius from 0 to 3.25 mm -RRB- , frequencies -LRB- 10 to 80 GHz -RRB- , -LRB- horizontal and vertical -RRB- polarizations , and temperatures -LRB- 0 , 10 and 20 degrees C -RRB- are stored to establish a data bank . Furthermore , a curve fitting technique , i.e. , interpolation of order 3 , is implemented for the TCS values in the data bank . Therefore , the interpolated TCS results can be obtained readily from the interpolation process with negligible or even null computational time and efforts . Error analysis is carried out to show the high accuracy of the present analysis and applicability of the interpolation . At three operating frequencies of 15 , 21.225 , and 38 GHz locally used in Singapore , some new TCS values are obtained from the new fast and efficient interpolation with a good accuracy
doc_bio_tags: B I I O B I O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O O O O O O O O O B I O O O O O O O O O O O O O O O O O B O O O O O O O O O O O O O O O O O O O O O O O B I I O O O O O O O O O B I I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O O O O O O O O O O O O O O O O O O O O O O O O B O O O O O O O O O O O B I O O O O O O O O O O O O O O O O B O O O B I O O O O O O B I O O O B O O O O O O O O O O O O O B O O O O