Isthmus of Tehuantepec Wind Climatology and ENSO Signal
| Autor: | Rosario Romero-Centeno, Artemio Gallegos, Jorge Zavala-Hidalgo, James J. O'Brien |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Journal of Climate. 16:2628-2639 |
| ISSN: | 1520-0442 0894-8755 |
| Popis: | The statistical characteristics of the winds at the Isthmus of Tehuantepec and their seasonal and interannual variability are studied through the analysis of several datasets and a reconstruction of the winds for a 31-yr period. Observations show that the long-term monthly mean wind speeds and frequency of occurrence of northerly winds have a strong seasonal signal, with maximum values during December–January, minimum during May–June, and a relative maximum in July. The frequency distribution of wind speed is bimodal, a feature that is closely related to the wind direction, with northerly winds being stronger. Based on these results and the close relationship between the across-Isthmus pressure differences and the local winds, a statistical model is developed to get a reconstruction of 12-hourly winds through the Isthmus of Tehuantepec for 1964–95. The model reproduces fairly well the main characteristics of the observed winds: the bimodal distribution of the wind speed and the seasonal signal in... |
| Databáze: | OpenAIRE |
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