contributor author | Ambaum, Maarten H. P. | |
contributor author | Athanasiadis, Panos J. | |
date accessioned | 2017-06-09T16:54:04Z | |
date available | 2017-06-09T16:54:04Z | |
date copyright | 2007/10/01 | |
date issued | 2007 | |
identifier issn | 0022-4928 | |
identifier other | ams-76217.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4218640 | |
description abstract | The response of a uniform horizontal temperature gradient to prescribed fixed heating is calculated in the context of an extended version of surface quasigeostrophic dynamics. It is found that for zero mean surface flow and weak cross-gradient structure the prescribed heating induces a mean temperature anomaly proportional to the spatial Hilbert transform of the heating. The interior potential vorticity generated by the heating enhances this surface response. The time-varying part is independent of the heating and satisfies the usual linearized surface quasigeostrophic dynamics. It is shown that the surface temperature tendency is a spatial Hilbert transform of the temperature anomaly itself. It then follows that the temperature anomaly is periodically modulated with a frequency proportional to the vertical wind shear. A strong local bound on wave energy is also found. Reanalysis diagnostics are presented that indicate consistency with key findings from this theory. | |
publisher | American Meteorological Society | |
title | The Response of a Uniform Horizontal Temperature Gradient to Heating | |
type | Journal Paper | |
journal volume | 64 | |
journal issue | 10 | |
journal title | Journal of the Atmospheric Sciences | |
identifier doi | 10.1175/JAS4038.1 | |
journal fristpage | 3708 | |
journal lastpage | 3716 | |
tree | Journal of the Atmospheric Sciences:;2007:;Volume( 064 ):;issue: 010 | |
contenttype | Fulltext | |