Sentences with phrase «oscillation since»

For example, changes in SST monitored via satellite have been used to document the progression of the El Niño - Southern Oscillation since the 1970s.

A. Mazzarella and N. Scafetta, «Evidences for a quasi 60 - year North Atlantic Oscillation since 1700 and its meaning for global climate change,» Theor.

Another paper is Mazzarella and N. Scafetta, «Evidences for a quasi 60 - year North Atlantic Oscillation since 1700 and its meaning for global climate change,» Theor.

Evidences for a quasi 60 - year North Atlantic Oscillation since 1700 and its meaning for global climate change Published in Theoretical Applied Climatology (DOI 10.1007 / s00704 -011-0499-4) last august

The Anthropogenic Global Warming (AGW) sand castle was built by smoothing all the oscillations in Global Mean Surface Temperature (GMST) before 1970s, leaving the warming phase of this oscillation since then untouched and calling it man - made, as shown in the chart below:

Evidences for a quasi 60 - year North Atlantic Oscillation since 1700 and its meaning for global climate change.

This assumption is based on climate model results that gave high climate sensitivity for doubling of CO2 by smoothing out all the oscillation in GMST before the 1970s and leaving untouched the warming phase of the oscillation since then and calling it man - made global warming as shown below.

For example, smoothing the oscillation before the 1970s, leaving the warming phase of the oscillation since then untouched, and calling this warming man - made is a misinterpretation of the data.

In my own investigation into the CETs oscillations since 1650 I have identified a natural trigger for those changes.

A phenomenological model based on these astronomical cycles can be used to well reconstruct the temperature oscillations since 1850 and to make partial forecasts for the 21st century.

Furthermore the bottom of the first of these, in 1908, was within 5 years of the deepest trough of the ocean oscillations since 1850, which was in 1913, which is why 1910 was so cold.

As I said in my paper many times, the barycentric speed of the sun can be used as just a «proxy in the frequency domain» for what is causing the climate oscillations Since the velocity of the Sun contains much the same frequencies as the tidal forces [that you now believe is directly responsible for solar activity] you can use the velocity as a «proxy» for the tidal forces, said proxy you claim is just a convenience device for easier calculations rather than the cause of anything.

Not exact matches

The simplest sensation of light or sound in us is connected with processes which, since they are started and kept up by outer oscillations, must themselves be somehow of an oscillatory nature, although we are wholly unaware of the separate phases and oscillations...

Their share of the vote, notwithstanding short - term oscillations within the political cycle, has fallen steadily overall since the second world war.

Although scientists are unable to predict when the oscillation will switch modes, when it does, the heat, since it is not stored very deep in the ocean, can «readily resurface,» said England.

At first, they assumed that BLAPs could be hot dwarf stars since they have similar oscillation periods.

This makes it impossible to use visible light to follow electron dynamics, since one oscillation takes about 2 femtoseconds, or 10 - 15 seconds.

Since seismic oscillations alter the surface area of the star, measurably changing its brightness, the data Kepler collects also reveal these stellar vibrations.

By comparing the small oscillations in cosmic ray rate and temperature with the overall trends in both since 1955, Sloan and Wolfendale found that less than 14 percent of the global warming seen during this period could have been caused by solar activity.

Since the 1960s, one second has been defined as 9,192,631,770 oscillations of a cesium atom between two energy levels.

Furthermore, since the end of the 19th century, we find an increasing variance in multidecadal hydroclimatic winter and spring, and this coincides with an increase in the multidecadal North Atlantic Oscillation (NAO) variability, suggesting a significant influence of large - scale atmospheric circulation patterns.

The new paper draws these two strands of climate control together and shows, by demonstrating a strong relationship between the Southern Oscillation and lower - atmospheric temperature, that ENSO has been a major temperature influence since continuous measurement of lower - atmospheric temperature first began in 1958.

Since that time reactor experiments, including those at Daya Bay, have played a crucial role in uncovering the secrets of neutrino oscillations — their tendency to switch among three known flavors: electron, muon, and tau — and other important neutrino properties.

Since synchronized oscillations between populations of cells distinguished between visual stimuli, it's theoretically possible to determine the correct answers for the matching tasks the monkeys performed simply by reading their brain waves.

Again the difficulty lies in detecting small exoplanets at far orbits, since giant exoplanets and close orbits exert much larger gravitational pulls over the star and create easily visible oscillations.

Since 1995, the natural climate pattern called the Atlantic Multi-decadal Oscillation (AMO) has been in a phase in which temperature, wind, and rainfall patterns favor stronger hurricane seasons.

The continued swings in the Arctic Oscillation can make it difficult for climate scientists to determine how sea ice loss is altering winter weather, since there is so much natural variability in the system in the first place.

Since there is some degree of high - frequency oscillation in that curve, its longer - term trend can be elicited from a smoothed approximation, depicted by the green curve.

This villa makes a great bet for groups seeking oscillations of privacy and social time since it is divided into three separate pavilions.

The AMO is an oscillation (or fluctuation since it is not that regular) but not an energy source.

More than 95 % of the 5 yr running mean of the surface temperature change since 1850 can be replicated by an integration of the sunspot data (as a proxy for ocean heat content), departing from the average value over the period of the sunspot record (~ 40SSN), plus the superimposition of a ~ 60 yr sinusoid representing the observed oceanic oscillations.

His characterisation of Spencer's work is a huge overstatement since Spencer's paper only looked at the MJO (Madden - Julien Oscillation, or Intra-seasonal oscillation) which is a dynamic oscillation in the tropics and not a response to surface warmOscillation, or Intra-seasonal oscillation) which is a dynamic oscillation in the tropics and not a response to surface warmoscillation) which is a dynamic oscillation in the tropics and not a response to surface warmoscillation in the tropics and not a response to surface warming at all.

However, if the roughly 10 - year oscillation of global temperature we have seen over the last several decades (be it due to the solar cycle or internal) holds on, we will see a considerable temperature increase during the coming years, since we are at the minimum now.

While that is possible, the so - called Pacific Decadal Oscillation (PDO) index that is used to characterize decadal and multi-decadal variability of the Pacific Ocean has not shown a significant increasing or decreasing three - decade trend from the 1980's to the 2000's (it's dominated by quasi-decadal fluctuation since 1980).

This scenario of strong warming of the Arctic and a weakening of the polar vortex is something that I have been predicting in my Arctic Oscillation (AO) blog since October.

Also to claim a warming on the basis of a multi-decadal oscillation back to the 1970s (when the temperature had been falling since about 1940) as some sort of significance, is beyond risible.

Northeast Pacific coastal warming since 1900 is often ascribed to anthropogenic greenhouse forcing, whereas multidecadal temperature changes are widely interpreted in the framework of the Pacific Decadal Oscillation (PDO), which responds to regional atmospheric dynamics.

Since La Nina is the cold phase of the ENSO (El Nino Southern Oscillation) there are certain weather patterns associated with it.

Another head of the hydra was a 2009 paper by John McLean, Chris de Freitas and Bob Carter published in JGR in the innoccuously titled «Influence of the Southern Oscillation on Tropospheric Temperature», the authors claimed that el nino drove essentially all variations to global temperature — a distinctly odd claim since almost nothing in climate science has been mroe closely studied than the relationship between el nino and global climate.

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.

As this map suggests, CO2 - caused «global» warming is highly suspect since normal regional weather / climate oscillations easily overwhelm its impact.

The only thing I see is that the ocean temperature has had its oscillations but has generally increased at a constant rate since 1900 but other literature show anthropogenic emissions have increased exponentially from 1900 to 2006 I see no correlation between a straight line and an exponential curve.

Since there are several thermodynamic layers in both the oceans and atmosphere, there would be more than one oscillation.

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 ----------------------

Importantly, the satellite data series from 1979 is probably still not long enough to make any sensible comment about global warming trends since all we can see is the oscillation overprint.

Because of this failure it is possible to demonstrate that about half of the warming since 1850 is associated to these natural oscillations.

e.g. there is 1) a mild global cooling from the Holocene Climatic Optimum 2) A millenial scale oscillation of ~ 1500 years per Loehle & Singer above (i.e. an approximately linear rise from the Little Ice Age — or better an accelerating natural warming since the LIA) 3) A 50 - 60 year multidecadal oscillation.

Since the sawtooth was created as the difference between temperature and AGW, the further back you go the more the sawtooth matches temperature, and (to the extent that they drive temperature) ocean oscillations.

Had it turned out that climate sensitivity CS should be say 1.1 C / doubling in order to make sense of the oscillations I would not argue against that since I have no motivation to.

The day - by - day, month - by - month, year - by - year, etc. sequencing of values, however, will not correspond to observations, since climate models solve a «boundary value problem» and are not constrained to reproduce the timing of natural climate variability (e.g., El Niño - Southern Oscillation) in the observational record.