Sep 1, 2003 · To obviate such problems, we propose here a generalized form of Lait's (1994) modified PV Π L by introducing an additional degree of freedom by allowing a nonisothermal …

Jul 12, 2024 · We show that a smoke-charged vortex (SCV) induced and maintained by absorbing aerosols played a key role in lofting pollutants from the lower stratosphere and nearly doubled …

Lait proposed a modified potential vorticityPL, where a physically meaningful scaling is introduced that removes much of the altitude dependence of P. Here a generalized form of P L …

May 10, 2021 · In the natural coordinates, without expanding the vertical direction, both vortices appear as isolated pancakes of anomalous anticyclonic Lait PV (i.e. negative in the Northern …

Jul 12, 2024 · Fig. 1 (B and C), we calculated the potential vorticity (PV) as Lait PV (LPV) (section S2.4) based on Modern- Era Retrospective analy-sis for Research and Applications Version 2 …

Sep 24, 2021 · The PV is calculated from winds and temperature as a function of pressure in the reanalysis and model, then linearly interpolated to isentropic surfaces for our analysis. To …

Feb 1, 2024 · This section examines the impacts of RDS on the northern polar vortex via its effects on the (zonally-averaged and non-zonally-averaged) 300 K isentropic surface PV, and …

May 10, 2021 · We propose that these vortices can be seen as bubbles of small, almost vanishing, potential vorticity and smoke carried vertically across the stratification from the …

Sep 23, 2009 · Modified potential vorticity (Lait PV) plotted every 4 km altitude starting at 18 km. The blue vertical line indicates the location of Bern. Red areas mark the location of the polar …

Oct 15, 2002 · Latitude-potential temperature cross section of MIMOSA advected PV, corrected for vertical dependence on the increasing potential temperature with altitude [Lait, 1996], on 5 …