Search Results

You are looking at 1 - 3 of 3 items for :

  • Water budget/balance x
  • Predictability and Dynamics of Weather Systems in the Atlantic-European Sector (PANDOWAE) x
  • All content x
Clear All
Olivia Martius and Heini Wernli

earth; λ and φ are longitude and latitude, respectively; Ω is the rotation velocity of the earth; and V λ is the viscous term, which will be neglected in the subsequent considerations. The first term on the right-hand side of the equation describes the nonconservation effect of zonal pressure variations (eddies). Assuming geostrophic balance, an air parcel in the Northern Hemisphere is transported northward along a positive longitudinal pressure gradient (e.g., along the eastern edge of a

Full access
Franziska Teubler and Michael Riemer

baroclinic processes can be expected when the respective low-level anomalies lead the upper-level pattern by less than one-half wavelength (exemplified in Fig. 2b ). c. Divergent flow The above-noted theoretical frameworks of Rossby wave dynamics do not consider the impact of the irrotational flow (referred to as “divergent” hereinafter). Under nonlinear balance ( Charney 1955 ), a good approximation for synoptic-scale flows, the divergent flow component is, in general, an order of magnitude smaller

Full access
Volkmar Wirth, Michael Riemer, Edmund K. M. Chang, and Olivia Martius

conservative (i.e., adiabatic and frictionless) conditions. By contrast, wave activity and the associated wave activity flux do satisfy a conservation relation, for conservative flow. It means that the flux completely accounts for the local rate of change of wave activity , and there are no further adiabatic sources and sinks, in contrast to the EKE budget equation (3) . As a consequence, wave activity is globally conserved during the conservative propagation of a wave packet. This facilitates

Open access