|
| Wind Climate Characteristics in the Dongsha Islands |
| Received:April 19, 2018 Revised:July 25, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.07.017 |
| KeyWord:Dongsha Islands wind climate monthly characteristic daily characteristic wind class frequency wind direction occurrence |
| Author | Institution |
| GAO Zhan-sheng |
Navigation Department, People's Liberation Army Dalian Naval Academy, Dalian , China |
|
| Hits: |
| Download times: |
| Abstract: |
| Objective To research wind climate characteristics of the Dongsha Island based on the 22-year CCMP (Cross-Calibrated, Multi-Platform) wind data to provide scientific basis for construction of marine battlefield environment. Methods CCMP wind field data with high accuracy was used to statistically analyze characteristics of the sea area near the Dongsha Islands during the past 22 years. Results The monthly characteristics of the wind speed showed a "W" shape. And the peak value appeared in November-December-January (of about 9 m/s), while the trough appeared in June (of about 6 m/s). The annual mean wind speed was 6.5 m/s. The daily characteristics of the wind speed showed a "U" shape. The wind class of Dongsha Islands was mainly in class 3-5. The gale occurrence in January was greater than that in July. In January and October, the wind direction was northeast, south-southwest in July, while ENE and SSE in April. About the annual occurrence, the wind direction was prevailed by northeast, followed by south-southwest. For the past 22 years, the wind speed of the Dongsha Island showed a significant increasing trend, of 0.0424 m/(s•a). Conclusion With the high-precision CCMP wind field data, the wind characteristics of the Dongsha Islands are obtained through statistical analysis methods, which has scientific support for the construction of the marine battlefield environment. |
| Close |
|
|
|