Sentences with phrase «for atmospheric waves»
It is common for atmospheric waves to grow in amplitude with height as the air becomes thinner.
https://www.scientificamerican.com/ Not exact matches
For their part, though, global warming skeptics such as atmospheric physicist Fred Singer maintain that cold weather snaps are responsible for more human deaths than warm temperatures and heat wavFor their part, though, global warming skeptics such as atmospheric physicist Fred Singer maintain that cold weather snaps are responsible for more human deaths than warm temperatures and heat wavfor more human deaths than warm temperatures and heat waves.
Knowing what to look for Previous studies investigating heat wave prediction have looked for patterns in the tropics, but this research was interesting because the predictive factor is an atmospheric phenomenon that occurs in the middle latitudes, Schubert said.
«Time - reversed» light waves can be used to improve laser - beam quality, compensate for atmospheric turbulence, track a moving satellite, encode and decode messages and compare image patterns
In combinations with numerical simulations, these observations can help constrain the properties of the waves, as well as the background states for wave propagation, for instance, the atmospheric stratification.
In the tropical Pacific, the distance from Indonesia to South America and the way tropical winds push warm water west combine to allow special waves to travel along the equator and are amplified by the atmospheric wind response to produce large fluctuations in temperatures (up to 3 degrees Celsius) in the Eastern Pacific that last for months.
The natural process of atmospheric blocking, and the climate impacts induced by such blocking, are the principal cause for this heat wave.
θ = potential temperature, which is conserved for dry adiabatic processes and is a useful vertical coordinate for examining various fluid mechanical processes (like Rossby waves) when the atmospheric lapse rate is stable (for dry convection)(which is generally true on a large scale away from the boundary layer).
Of course, there are plenty of negative feedbacks as well (the increase in long wave radiation as temperatures rise or the reduction in atmospheric poleward heat flux as the equator - to - pole gradient decreases) and these (in the end) are dominant (having kept Earth's climate somewhere between boiling and freezing for about 4.5 billion years and counting).
However, there is not a temperature inversion layer between the Stratosphere and the Mesosphere; therefore, there is a clear opportunity for atmospheric turnover or a horizontal rolling mix of the two layers at the boundary levels or the explanation for the «atmospheric waves».
That is an incredible bit of hand - waving there, and completely contradicted by the basic math — atmospheric concentration increase has been less than our emissions for about the last 60 + years, meaning nature is acting as a net sink over that period.
``... the moisture budget and its role in global change, the origins of ice ages, seasonal effects in atmospheric transport, stratospheric waves, and the observational determination of climate sensitivity -LSB-...] the development of the current theory for the Hadley Circulation, -LSB-...] the quasi-biennial oscillation of the tropical stratosphere.
Petoukhov et al. (34) proposed a common mechanism for generating persistent high - amplitude quasibarotropic planetary - scale wave patterns of the NH midlatitude atmospheric circulation with zonal wave numbers m = 6, 7, and 8 that can explain a number of the major NH summer extremes over the 1980 — 2011 period (34, 35).
The corresponding working quasilinear wave equation for the barotropic azonal stream function Ψm ′ of the forced waves with m = 6, 7, and 8 (m waves) with nonzero right - hand side (forcing + eddy friction) yields (34) u˜ ∂ ∂ x (∂ 2Ψm ′ ∂ x2 + ∂ 2Ψm ′ ∂ y2) + β˜ ∂ Ψm ′ ∂ x = 2Ω sin ϕ cos2 ϕT˜u˜ ∂ Tm ′ ∂ x − 2Ω sin ϕcos2 ϕHκu˜ ∂ hor, m ∂ x − (kha2 + kzH2)(∂ 2Ψm ′ ∂ x2 + ∂ 2Ψm ′ ∂ y2), [S3] where x = aλ and y = a ln -LSB-(1 + sin ϕ) / cos ϕ] are the coordinates of the Mercator projection of Earth's sphere, with λ as the longitude, H is the characteristic value of the atmospheric density vertical scale, T˜ is a constant reference temperature at the EBL, Tm ′ is the m component of azonal temperature at this level, u˜ = u ¯ / cos ϕ, κ is the ratio of the zonally averaged module of the geostrophic wind at the top of the PBL to that at the EBL (53), hor, m is the m component of the large - scale orography height, and kh and kz are the horizontal and vertical eddy diffusion coefficients.
As regards the meridional wave numbers of the above - mentioned dominant partial waves of the external forcing with a given m = 6, 7, and 8, the observational and model results of the 1D Fourier transform of the midtroposphere extratropical atmospheric fields attest that the characteristic values of lm for these waves (see, e.g., refs.
However, using National Centers for Environmental Prediction − National Center for Atmospheric Research (NCEP - NCAR) reanalysis data (41), Petoukhov et al. (34) showed that, during a number of recent NH extremes in July and August, certain persistent high - amplitude atmospheric wave patterns with barotropic vertical structure evolved, to which the quasistationary component of midlatitude barotropic free waves with zonal wave numbers k ≈ 6 − 8 made an exceptionally large contribution.
Although the atmospheric CO2 concentration has been rising for decades, we are now only just starting to feel the effects of a warming climate, such as melting glaciers, stronger heat waves and more violent storms.
As I have pointed out previously on spiked, when one out of six new studies showed that a new record had been set for Arctic sea ice extent, the Guardian's Damian Carrington declared: «Ice is the white flag being waved by our planet, under fire from the atmospheric attack being mounted by humanity.»
He showed that atmospheric absorption of long - wave radiation was constant for 61 years while at the same time carbon dioxide increased by 21.6 percent.
What we are looking for is the solar connection to ocean / atmospheric regimes — not some vague arm waving at multiple causes of what you assume wrongly to be the mechanisms.
By using an idealized heating to force a comprehensive atmospheric model, the large negative anomalous latent heating associated with the observed deficit in central tropical Pacific rainfall is shown to be mainly responsible for the global quasi-stationary waves in the upper troposphere.
Furthermore, ocean and atmospheric scientists are interested in how storm - driven waves and surges combine with tides to affect the potential for coastal flooding and the rate of coastal erosion.
In the tropical Pacific, the distance from Indonesia to South America and the way tropical winds push warm water west combine to allow special waves to travel along the equator and are amplified by the atmospheric wind response to produce large fluctuations in temperatures (up to 3 degrees Celsius) in the Eastern Pacific that last for months.
Now as it happens, I did more that wave arms, I gave a specific argument that demonstrates that anthropogenic emissions are responsible for the observed rise in atmospheric CO2 (the mass balance argument).
Because the longwave atmospheric weather patterns (Rossby waves) have a scale of several thousand kilometers, it is not unusual for the temperature of a region the size of the United States to be substantially warmer or co lder during a single season than the zonal mean temperature.
For example, it is said that the Moscow heat wave was caused by an extreme atmospheric «blocking» situation, or the Texas heat wave was caused by La Niña ocean temperature patterns,» the researchers write.
We may yet find that climate change was responsible for how bad the Pakistan floods were, for how much rain fell, but for now, it looks like a similar atmospheric blocking action that kept storms pretty much in one place, the same action that made eastern Russia have the long deadly heat wave and Siberia have an opposite cold wave.
The atmospheric waves may also be partly to blame for the melting West Antarctic Ice Sheet.
The partition of the outgoing long wave radiation into upward atmospheric emittance and surface transmitted radiation components is based on the accurate computation of the true greenhouse - gas optical thickness for the radiosonde data.
Stable and accurate solutions to the Navier Stokes equations for large scale atmospheric flows are obtained by filtering sound waves (the hydrostatic assumption) and filtering high frequency unresolved gravity waves.