| タイトル | Medium-range numerical forecasts of atmospheric angular momentum |
| 著者（英） | Salstein, David A.; Miller, Alvin J.; Nehrkorn, Thomas; Mccalla, Margaret R. P.; Steppe, J. Alan; Rosen, Richard D.; Dickey, Jean O.; Eubanks, T. Marshall |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.|National Meteorological Center|Atmospheric and Environmental Research, Inc. |
| 発行日 | 1987-09-01 |
| 言語 | eng |
| 内容記述 | Forecasts of zonal wind fields produced by the medium-range forecast (MRF) model of the National Meteorological Center are used to create predictions of the atmosphere's angular momentum at lead times of 1-10 days. Based on momentum forecasts archived for the period December 1985-November 1986, it is found that, on average, the MRF exhibits positive skill relative to persistence-based forecasts at all lead times. Over the entire one-year study period, the improvement over persistence exceeds 20 percent for 2-6 day forecasts and remains as large as 10 percent even for 10-day forecasts. On the other hand, skill scores for the MRF momentum predictions vary considerably from month to month, and for a sizable fraction of the study period, the MRF is less skillful than persistence. |
| NASA分類 | METEOROLOGY AND CLIMATOLOGY |
| レポートNO | 88A16400 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/373968 |
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