Sentences with phrase «equatorward shift»

About one - third of the Sahel was projected to aridify with warming of 1.5 to 2 °C by about 2050, with a general equatorward shift of vegetation zones (van den Born et al., 2004; Box 4.2).

At the base of all this is the simple failure of anyone to note the start of the equatorward shift in the jets around 2000.

The thing is that as regards the sequence of observed events leading to changes in tropospheric temperature trends and the cyclical poleward and equatorward shifts in the air circulation systems the NCM is pretty robust.

Not exact matches

The ASL shifts poleward and equatorward, as well as eastward and westward with the seasons.

If the surface pressure distribution begins to shift to a more meridional / equatorward pattern as it did around 2000 then if previously it was in a poleward / zonal mode it is clear that warming will have ceased and cooling has begun due to more global cloudiness and less solar energy getting into the oceans.

The ITCZ wandere with the seasons, but the poleward shift amplitude is mainly solar cycle induced: thus during high solar activity, the ITCZ and the jet stream position is more polewards, at low activity more equatorward.

Poleward shifting was observed during the late 20th century warming, and it is well know that the zones shifted equatorward during the Little Ice Age.

Most LGM proxy data suggest that the tropical oceans were colder by about 2 °C than at present, and that the frontal zones in the SH and NH were shifted equatorward (Kucera et al., 2005), even though large differences are found between temperature estimates from the different proxies in the North Atlantic.

The air circulation systems move latitudinally poleward or equatorward depending on whether there is net cooling or warming of the air at a gradual if variable rate all the time and climate shifts in any given location depend mainly on the changing position of that location in relation to the latitudinal position of the major air circulation systems.