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The Kunming-Montreal Global Biodiversity Framework (GBF) calls for a 50% reduction in rates of invasive alien species establishment by 2030. However, estimating changes in rates of introduction and establishment is far from straightforward, particularly on a national scale.
A decade of radiosonde observations of wind and temperature in the troposphere and lower stratosphere have made it possible to compile a climatology of low-frequency gravity waves above Davis, Antarctica (69S, 78E). Wave characteristics, extracted using wavelet analysis [Zink and Vincent, 2001]…
A decade of radiosonde observations of wind and temperature in the troposphere and lower … stratosphere have made it possible to compile a climatology of low-frequency gravity waves … above Davis, Antarctica (69°S, 78°E). Wave characteristics, extracted using wavelet … analysis [Zink and Vincent…
Measurements of mesosphere and lower thermosphere (MLT) winds obtained using a 2 MHz … radar at Davis (68.6S, 78.0E) from 1993 to the present have allowed the compilation of a … climatology of planetary wave activity and horizontal momentum fluxes.
A consequence of the wave-number rich tidal activity that has been observed in the southern polar MLT is that the horizontal flux of horizontal momentum (u'v') is likely to be non-zero. This quantity is affected by the phase angle between the zonal and meridional wind perturbations.
Observations and modelling described by Becker and Fritts [Ann Geophys, 24, 1175-1188, 2006] suggests that wintertime planetary wave activity, and the gravity-wave filtering … associated with it…
obtained from Davis station in Antarctica (69S, 78E) provide an opportunity to study … interhemispheric coupling. Observations and modelling described by Becker and Fritts (Ann. Geophys, 24, 1175-1188, 2006) suggests that wintertime planetary wave activity…