𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Filtered non-hydrostatic models in pressure-related coordinates

✍ Scribed by Rein Rõõm; Pedro M. A. Miranda; Alan J. Thorpe

Publisher
John Wiley and Sons
Year
2001
Tongue
English
Weight
950 KB
Volume
127
Category
Article
ISSN
0035-9009

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The anelastic sigma‐coordinate version of the pseudo‐anelastic Miller‐Pearce model is developed. The pseudo‐anelastic model is characterized by the presence of external‐mode acoustic perturbations which propagate in the horizontal, compromising the model performance by the need to use smaller time steps than would otherwise be required. The approach developed in this study allows for the filtering of acoustic waves and adjustment of surface pressure perturbations. The approach is tested in a new numerical implementation of an adiabatic sigma‐coordinate non‐hydrostatic model and results are found to be comparable to the unadjusted version, and to theory when applicable. The new code is found to allow for significantly larger time steps whilst still retaining numerical stability, showing the possibility of further model improvements.

📜 SIMILAR VOLUMES

Least action principle for a general, no
Least action principle for a general, non-hydrostatic, compressible, acoustically non-filtered pressure-coordinate model
✍ Rein Rõõm 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 277 KB

## Abstract The least action principle is described for general (non‐hydrostatic, compressible, acoustically non‐filtered) pressure‐coordinate equations of atmospheric dynamics (Rõõm 1989), which represents a generalization of the Least Action Principle, first developed for the pressure‐coordinate

Hemoglobin oxygenation in relation to hy
Hemoglobin oxygenation in relation to hydrostatic pressure
✍ Johnson, Frank H. ;Schlegel, Frances Mck. 📂 Article 📅 1948 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 262 KB

## ONE FIGURE The influence of hydrostatic pressure on the equilibrium between hemoglobin and oxyhemoglobin in solution is of interest from at least 2 points of view. I n the first place, the mechanisni of this reaction is not well understood, and any pronounced shifting of the equilibrium under p