A Comprehensive Analysis of Nonlinear Corrections to the Classical Ekman Pumping
-
- ISHIDA Shin-Ichi
- Graduate School of Science and Technology, Kobe University
-
- IWAYAMA Takahiro
- Graduate School of Science and Technology, Kobe University
書誌事項
- タイトル別名
-
- Comprehensive Analysis of Nonlinear Corrections to the Classical Ekman Pumping
この論文をさがす
抄録
The role of each nonlinear term in the vorticity and divergence equations derived from the primitive equations to the steady nonlinear Ekman pumping is examined for uni-directional flows with a small Rossby number comprehensively. For uni-directional flows with a constant horizontal shear, the perturbation analysis in the first order of a small Rossby number show that the contribution from the nonlinear divergence term in the vorticity equation to the Ekman pumping is the most dominant. That from the vertical advection term in the vorticity equation is the second dominant. The nonlinear terms from the divergence equation are less important for the nonlinear corrections to the classical Ekman pumping. In addition, the effect of the nonlinear divergence term to the Ekman pumping is opposite from that of the other nonlinear terms. The latter result also can be verified by qualitative discussions. Furthermore, the analytical solutions for constant horizontal shear flows can be utilized even for uni-directional flows with general horizontal shear. In this case, it is found that the contribution from the nonlinear divergence and horizontal advection terms in the vorticity equation to the Ekman pumping is the most dominant. That from the vertical advection and tilting terms in the vorticity equation is the second dominant. Some comments on the pre-existing approximate models of the nonlinear Ekman pumping are made.
収録刊行物
-
- 気象集誌. 第2輯
-
気象集誌. 第2輯 84 (5), 839-851, 2006
公益社団法人 日本気象学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282681479894656
-
- NII論文ID
- 110004837935
- 130004434948
-
- NII書誌ID
- AA00702524
-
- ISSN
- 21869057
- 00261165
-
- NDL書誌ID
- 8515824
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可