Sentences with phrase «year time scale oscillation»

Not exact matches

In fact, the 7.3 - 14.7 and 14.7 - 29.3 frequency bands may contain contributions from El Niño Southern Oscillation (ENSO), although the time scale of ENSO is from 3 - 8 years.

Once you fix the «long» to be a particular time scale of interest (say 10 years or 100) you'll see non-periodic oscillations on greater time scales.

Since a primary driver of the Earth's climate from year to year is the El Nino Southern Oscillation (ENSO) acts on time scales on the order of 2 - 7 years, and the fact that the bulk of the Southern Hemisphere hurricane season occurs from October — March, a reasonable interpretation of global hurricane activity requires a better metric than simply calendar year totals.

El Niño - Southern Oscillation (ENSO), a coupled fluctuation in the atmosphere and the equatorial Pacific Ocean, with preferred time scales of two to about seven years.

Abstract — 2008 Climate and wildfires in the North American boreal forest... Climate controls the area burned through changing the dynamics of large - scale teleconnection patterns (Pacific Decadal Oscillation / El Niño Southern Oscillation and Arctic Oscillation, PDO / ENSO and AO) that control the frequency of blocking highs over the continent at different time scales......... Since the end of the Little Ice Age, the climate has been unusually moist and variable: large fire years have occurred in unusual years, fire frequency has decreased and fire — climate relationships have occurred at interannual to decadal time scales...... http://rstb.royalsocietypublishing.org/content/363/1501/2315.short ----------------------

The stadium wave effect seems most plausible to me because on the surface of the globe this effect will be felt at the regional level and rippling to neighboring regions (spatial networking) over oscillation time scales of around 60 years.

The decadal - scale mode associated with the Arctic Oscillation (AO) and a low - frequency oscillation (LFO) with an approximate time scale of 60 - 80 yearsOscillation (AO) and a low - frequency oscillation (LFO) with an approximate time scale of 60 - 80 yearsoscillation (LFO) with an approximate time scale of 60 - 80 years, dominate.

Now forced to explain the warming hiatus, Trenberth has flipped flopped about the PDO's importance writing «One of the things emerging from several lines is that the IPCC has not paid enough attention to natural variability, on several time scales,» «especially El Niños and La Niñas, the Pacific Ocean phenomena that are not yet captured by climate models, and the longer term Pacific Decadal Oscillation (PDO) and Atlantic Multidecadal Oscillation (AMO) which have cycle lengths of about 60 years.»

Changes on a time scale of 30 years would be hard to see in most proxy records, particularly if they are preceded and followed by 20 - 50 year oscillations.

This article makes use of recent findings about the relatively short decadal or multi decadal (20 to 30 years) oceanic oscillations that, the writer contends, are short enough to bring the time scales involved in oceanic changes into line with the solar cycles of 11 years or so.

OOOH... What a great idea... Let's take an chaotic system, with variable and constant inputs, multiple non-linearities, periodic, pseudo-periodic, and aperiodic oscillations with time scales of seconds to millenia and size scales of centimeters to thousands of kilometers, all of which are coupled, and apply a linear regression on 37 years of data.

Further, following your google hint, a few models popped up, e.g. this one that says in abstract: «A box model of the ocean - atmosphere - sea ice - land ice climate system is used to study a novel mechanism for self - sustained oscillations of the climate system on a time scale of 100,000 years, without external forcing.»