Sentences with phrase «planetary waves»

[Response: It's related to planetary wave activity.

Magnusdottir, G., and P.H. Haynes, 1999: Reflection of planetary waves in three - dimensional tropospheric flows.

Perlwitz, J., and N. Harnik, 2003: Observational evidence of a stratospheric influence on the troposphere by planetary wave reflection.

Walker, C., and G. Magnusdottir, 2002: Effect of the Hadley circulation on the reflection of planetary waves in three - dimensional tropospheric flows.

Magnusdottir, G., and P. H. Haynes, 1995: Idealized modelling of the interactions of planetary waves with the subtropics.

This isn't a terrible idea, but single grid points have offsets to a co-located station for any number of reasons — mean altitude, un-resolved micro-climate effects, systematic but stable biases in planetary wave patterns etc. — and anomaly comparison are generally preferred since they can correct for these oft - times irrelevant effects.

Here we show that the recent warming in this region is strongly associated with a negative trend in the North Atlantic Oscillation, which is a response to anomalous [natural] Rossby wave - train activity [planetary waves related to the Earth's rotation] originating in the tropical Pacific.

Abatzoglou, J.T., and G. Magnusdottir, 2006: Opposing effects of reflective and non-reflective planetary wave breaking on the NAO.

Abatzoglou, J.T., and G. Magnusdottir, 2004: Nonlinear planetary wave reflection in the troposphere.

A new study by Screen and Simmonds demonstrates the statistical connection between high - amplitude planetary waves in the atmosphere and extreme weather events on the ground.

As the abundance of greenhouse gases gradually increases, planetary waves no longer break up the Arctic vortex as often.

# 42, John Fnn, I doubt that surface temps are doing a good job at measuring temp anomalies, because of stable weather from unusual planetary wave placements which sometimes give a rather large temperature anomaly noise signal.

For those following Seasonal forecasts, November was missed completely, and the claim of this pending cold winter will be only valid for small regions, but not for the world, even with stagnant planetary waves.

Greenland is most sensitive to volcanic (sulfate) cooling during the dynamically active winter season and along the western ice sheet margin, that is, when the equator - to - pole temperature differential is strongest and owing to the ice sheet topographic and baroclinic effect of planetary wave anchoring, respectively.

Our investigations into the interannual variability of the ozone hole, using the GISS global climate / middle atmosphere model, indicate that it is strongly dependent upon the amount of planetary wave energy in the troposphere (the area from Earth's surface to approximately 17 km altitude).

A substantial part of these extremes could be favored by zonally elongated trains of the midtroposphere planetary waves (see, e.g., refs.

Recently, Screen and Simmonds (38) showed that, during 1979 — 2012, months with extreme weather (in terms of high anomalies of land surface temperature and land precipitation) in the NH midlatitudes were commonly accompanied by zonally elongated midlatitude trains of quasistationary midtropospheric planetary waves, predominantly with m = 5 − 7.

Robinson, W.A., 1985: Interactions Among Planetary Waves and the Generation of Traveling Long Waves.

Via the interaction of these wind changes and planetary waves propagating up from the troposphere, the circulation in the stratosphere weakens, a response characterized by greater relative upwelling in the Southern Hemisphere extratropics, and more downwelling in the northern extratropics.

Abatzoglou, J.T., and G. Magnusdottir, 2006: Planetary wave breaking and nonlinear reflection: Seasonal cycle and interannual variability.