| contributor author | Zurita-Gotor, Pablo | |
| date accessioned | 2019-10-05T06:51:46Z | |
| date available | 2019-10-05T06:51:46Z | |
| date copyright | 3/18/2019 12:00:00 AM | |
| date issued | 2019 | |
| identifier other | JAS-D-18-0304.1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4263657 | |
| description abstract | AbstractThis paper investigates the coupling between the rotational and divergent circulations aiming to explain the observations that show that the tropical eddy momentum flux is due to correlations between divergent eddy meridional velocities and rotational eddy zonal velocities. A simple linear model in which the observed eddy divergence field is used to force the vorticity equation can reproduce quite well the observed tropical eddy momentum flux. The eddy momentum flux in the model shows little sensitivity to the basic-state winds and is mainly determined by the characteristics of the divergent forcing. Vortex stretching and divergent advection of planetary vorticity produce eddy momentum flux contributions with the same sign but the former forcing dominates. It is shown that the main factor affecting the direction of the eddy momentum flux response to both forcings is the meridional tilt of the divergence phase lines, albeit with an opposite sign to the classical relation between rotational momentum flux and streamfunction phase tilt. How this divergent structure is determined remains an open question. | |
| publisher | American Meteorological Society | |
| title | The Role of the Divergent Circulation for Large-Scale Eddy Momentum Transport in the Tropics. Part II: Dynamical Determinants of the Momentum Flux | |
| type | Journal Paper | |
| journal volume | 76 | |
| journal issue | 4 | |
| journal title | Journal of the Atmospheric Sciences | |
| identifier doi | 10.1175/JAS-D-18-0304.1 | |
| journal fristpage | 1145 | |
| journal lastpage | 1161 | |
| tree | Journal of the Atmospheric Sciences:;2019:;volume 076:;issue 004 | |
| contenttype | Fulltext | |
