Sentences with phrase «leading mode of variability»

This spatial pattern has been attributed to a trend towards the positive phase of the Southern Annular Mode (SAM)(e.g. Thompson and Solomon 2002; Marshall 2007), the leading mode of variability in the extra-tropical atmospheric circulation, characterized by atmospheric pressure anomalies of opposite sign between the polar latitudes and the mid-latitudes.

Likewise, the leading mode of variability in the Southern Hemisphere has been referred to as the High Latitude Mode and the Antarctic Oscillation, but is most commonly labeled the Southern Annular Mode in the recent literature.

A new study reconstructs a century - long South Atlantic Meridional Overturning Circulation index, from 1870 to present, finding it is highly correlated to the observational - based SAMOC time series and the Interdecadal Pacific Oscillation is the leading mode of variability.

Much of the inter-annual to decadal scale variability in surface air temperature (SAT) anomaly patterns and related ecosystem effects in the Arctic and elsewhere can be attributed to the superposition of leading modes of variability in the atmospheric circulation.

Not exact matches

In this region, much of the year - to - year temperature variability is associated with the leading mode of large - scale circulation variability in the North Atlantic, namely, the North Atlantic Oscillation.

The leading mode of southern hemisphere (SH) climatic variability, the southern annular mode (SAM), has recently seen a shift towards its positive phase due to stratospheric ozone depletion and increasing greenhouse gas (GHG) concentrations.

«One of the major modes of climate variability is El Niño and when we're in El Niño there's a large area of warm sea surface temps in the Pacific,» this leads to more precipitation on the West Coast, Crouch said.

The North Atlantic Oscillation (NAO), the dominant mode of atmospheric circulation variability over the North Atlantic / European sector, is a leading governor of wintertime climate fluctuations in Europe, the Mediterranean, parts of the Middle East and eastern North America over a wide range of time scales from intra-seasonal to multi-decadal (e.g., Hurrell 1995; Hurrell et al. 2003).

This study has highlighted the role of internal variability of the NAO, the leading mode of atmospheric circulation variability over the Atlantic / European sector, on winter (December - March) surface air temperature (SAT) and precipitation (P) trends over the next 30 years (and the next 50 years: see Supplemental Materials) using a new 40 - member ensemble of climate change simulations with CESM1.

The leading mode explains 45 % of the SLP trend variance and resembles the NAO, reinforcing the notion that the NAO is not only a dominant mode of variability on interannual time scales, but also on multi-decadal time scales (Fig. 2a).

«The authors write that North Pacific Decadal Variability (NPDV) «is a key component in predictability studies of both regional and global climate change,»... they emphasize that given the links between both the PDO and the NPGO with global climate, the accurate characterization and the degree of predictability of these two modes in coupled climate models is an important «open question in climate dynamics» that needs to be addressed... report that model - derived «temporal and spatial statistics of the North Pacific Ocean modes exhibit significant discrepancies from observations in their twentieth - century climate... conclude that «for implications on future climate change, the coupled climate models show no consensus on projected future changes in frequency of either the first or second leading pattern of North Pacific SST anomalies,» and they say that «the lack of a consensus in changes in either mode also affects confidence in projected changes in the overlying atmospheric circulation.»»

But this raises the interesting question, is there something going on here w / the energy & radiation budget which is inconsistent with the modes of internal variability that leads to similar temporary cooling periods within the models.

No known mode of internal variability leads to such widespread, near universal warming as has been observed in the past few decades.

Results show that the Interdecadal Pacific Oscillation (IPO) is the leading mode of SAMOC - SST covariability, explaining approximately 85 %, with the Atlantic Niño accounting for less than 10 % of the variability.