| タイトル | An evaluation of the National Meteorological Center weekly hindcast of upper-ocean temperature along the eastern Pacific equator in January 1992 |
| 著者（英） | Halpern, David; Ji, Ming |
| 著者所属（英） | Jet Propulsion Lab., California Inst. of Tech.; NASA Headquarters |
| 発行日 | 1993-06-01 |
| 言語 | eng |
| 内容記述 | The upper-ocean temperature distribution along the Pacific equator from 139 to 103 deg W was observed in January 1992 with temperature profiles recorded from a ship and inferred from an ocean general circulation model calculation involving data assimilation (i.e., hindcast). An El Nino episode was in progress. The l00-m-thick mixed layer depth, the mixed-layer temperature, and the depth-averaged temperature below the thermocline were similar in both data products. Considerable differences occurred in the representation of the 15-25 C thermocline, such as the depth-averaged temperatures above and below the 20 C isotherm, the east-west slope of the 20 C isotherm, and a 1000-km-wide depression. The longitudinal-averaged root-mean-square difference between the hindcast and observed depths of the center of the thermocline was 17 m. Most of the disparities could be attributed to a high wavenumber transient event that the model-based assimilation system was not intended to resolve. |
| NASA分類 | OCEANOGRAPHY |
| レポートNO | 93A48891 |
| 権利 | Copyright |
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