Sentences with phrase «sea level pressure center»

This AD pattern quickly shifted in the second half of June, however, and was replaced by a low sea level pressure center over the Pacific side of the Arctic Ocean (Figure 3b), opposing the transpolar sea ice drift.

This AD pattern quickly shifted in the second half of June 2012, however, and was replaced by a more typical low sea level pressure center over the Arctic Ocean.

Not exact matches

Here we analyze a series of climate model experiments along with observational data to show that the recent warming trend in Atlantic sea surface temperature and the corresponding trans - basin displacements of the main atmospheric pressure centers were key drivers of the observed Walker circulation intensification, eastern Pacific cooling, North American rainfall trends and western Pacific sea - level rise.

The models are gauged against the following observation - based datasets: Climate Prediction Center Merged Analysis of Precipitation (CMAP; Xie and Arkin, 1997) for precipitation (1980 — 1999), European Centre for Medium Range Weather Forecasts 40 - year reanalysis (ERA40; Uppala et al., 2005) for sea level pressure (1980 — 1999) and Climatic Research Unit (CRU; Jones et al., 1999) for surface temperature (1961 — 1990).

The figure below (Figure 5 a-c) provided by Cecilia Bitz, and similar plots provided by Oleg M. Pokrovsky and the NIC Group, shows the sea level pressure field centered over the Northern Hemisphere for July 2008, July 2007, and for July average conditions (climatology).

The normal sea level pressure climatology for the summer Arctic has been a flat field or a weak monthly mean low pressure center over the Arctic.

Prior to vortex displacements the main sea level pressure anomaly center of the tropospheric precursor is associated with the Siberian high.