| タイトル | Estimation of mean rain rate - Application to satellite observations |
| 著者（英） | Chiu, Long S.; North, Gerald R.; Kedem, Benjamin |
| 著者所属（英） | NASA Goddard Space Flight Center|Maryland Univ.|Applied Research Corp. |
| 発行日 | 1990-02-20 |
| 言語 | eng |
| 内容記述 | A method for the estimation of the mean area average rain rate from dependent data is developed and applied to the GARP Atlantic Tropical Experiment data. The method consists of fitting a mixed distribution, containing an atom at zero, by minimum chi-square in combination with certain time-space sampling designs. In modeling the continuous component of the mixed distribution, it is shown that the lognormal distribution provides a very close fit for the nonzero area average rainrates. A comparison with the gamma distribution shows that the lognormal distribution is a better choice as expressed by the minimum chi-square criterion. Some of the time-space sampling designs correspond to satellite sampling. The results indicate that a satellite visiting an area of about 350 x 350 sq km in the tropics approximately every 10 hours over a period can provide a rather close estimate for the mean area average rain rate. |
| NASA分類 | METEOROLOGY AND CLIMATOLOGY |
| レポートNO | 90A25249 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/357980 |
