第52回 ESCセミナー
Stochastic salinity variability in the subsurface: Theory and Application.
- 日時
- 2009年8月7日 (金) 11:00-12:00
- 場所
- 横浜研究所 交流棟2階小会議室 (三好講堂の隣)
- 講演者
- Mr. Tom Kilpatrick (University of Hawaii)
- 使用言語
- 英語
要旨
We use eddy-permitting simulations of the Northeast Pacifc (1950-2007) to study a prominent deterministic salinity signal in the subsurface. The signal is dominated by anomalous geostrophic advection. We develop a simple theory for anomalous geostrophic advection, which can be represented by chaining together two autoregressive first-order (AR-1) Hasselmann climate models-the first for the wind stress curl forcing the baroclinic pressure held, and the second for the baroclinic pres-sure controlling anomalous advection of salinity-such that the spectrum of pressure shows the familiar -2 slope, and salinity shows a -4 slope.
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