A simple extension of 'An alternative approach to sea surface aerodynamic roughness' by Zhiqiu Gao, Qing Wang, and Shouping Wang
| Autor: | Yuchao Gao, Qingtao Song, Xueyan Bi, Zhiqiu Gao, Linlin Wang |
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| Rok vydání: | 2012 |
| Předmět: |
Physics
Surface (mathematics) Atmospheric Science Drag coefficient Ecology Mathematical analysis Paleontology Soil Science Forestry Acceleration (differential geometry) Aquatic Science Oceanography Simple extension Wind speed Geophysics Classical mechanics Space and Planetary Science Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Shear velocity Phase velocity Significant wave height Earth-Surface Processes Water Science and Technology |
| Zdroj: | Journal of Geophysical Research: Atmospheres. 117 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/2012jd017478 |
| Popis: | [1] Based on the data previously collected during the Humidity Exchange over the Sea Main Experiment (HEXMAX), the methods used to parameterize aerodynamic roughness (z0), friction velocity (u*), and the neutral drag coefficient (CDN) under moderate wind speed conditions originally proposed by Gao et al. (2006) were extended by using the nondimensional significant wave height (gHs/u*2 or gHs/U10N2) instead of wave age (cp/u* or cp/U10N), where g is the acceleration of gravity, Hs is the significant wave height, U10Nis the horizontal wind speed at 10-m height under the neutral atmospheric condition, andcp is the phase velocity of the peak wave spectrum. The results show (1) u* = 0.024U10N(gHs/U10N2)−1/4, (2) z0 = 10 × exp[−4.797(gHs/u*2)1/6] or z0 = 10 × exp[−16.613(gHs/U10N2)1/4], and (3) CDN = 0.007(gHs/u*2)−1/3 or CDN = 5.76 × 10−4(gHs/U10N2)−1/2. The present parameterization schemes were experimentally tested. |
| Databáze: | OpenAIRE |
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