Sentences with word «wavenumber»

The role of the bulk constituents in that heat exchange is usually minimized by trundling out backradiation spectra from the Antarctic or the Sahara and showing the prominent peak of 15 micron radiation over a narrow range of wavenumbers.

What the researchers saw, when looking for patterns that predicted heat waves, was that heat waves tended to be preceded by wavenumber - 5 patterns by 15 to 20 days.

We derive the spatial variations of dust continuum emission at different wavenumbers, which are compared with those of the [O III] 88 micron (113 cm ^ -1) emission and the OH 119 micron (84 cm ^ -1) absorption.

So the FB's are transfer functions (H) of signal periodicy (w) and optical wavenumber (k) and probably also temperature (T).

When wavenumber - 5 patterns in the model were more amplified, U.S. heat waves became more likely to form 15 days later.

When a direct current is passed through the hybrid semiconductor, it creates a plasmon instability at a particular wavenumber.

By adjusting various parameters — such as the density of conduction electrons in the material or the strength of the DC electric field — it is possible to tune the cutoff wavenumber and, consequently, the frequency of the resulting terahertz radiation.

By examining the local state of damping of surface capillary waves we attempt to establish an equivalence between the Marangoni fluid dynamics and the nonlinear elastic shell theory above the critical wavenumber of the instabilities and propose a possible explanation for the perceived elastic - fluidic duality.

Eric Flynn, of the Space and Remote Sensing group at Los Alamos, invented imaging / high - frequency acoustic wavenumber spectroscopy for structural health assessment.

Yet these apply to spatial samples as well, with frequency represented as essentially wavenumbers.

The series is generally truncated to some zonal and meridional wavenumbers.

In the calculations I used an absorption wavenumber of 650 cm - 1 and tuned the optical depth to reach saturation.

The variance and propagation of the MJO, defined as the eastward wavenumbers 1 - 6, 30 -70-day mode, are examined in detail.

Further, there is the fact that changing the variable in Planck's law from wavelength to frequency or wavenumber shifts the peak emissions to wavelengths exactly coinciding with CO2 primary absorption band as is evident from this --

This is due to the large multiplicity of IR - absorption lines as one moves from the center of the 667 wavenumber band into the wings, where fewer and fewer molecules are in states capable of particular quantum transitions, so that even larger quantities of CO2 would fail to find these transitions fully occupied.

There would be a significant excess in IR radiation in rather wide peaks around 1.537 µm and 2.1 µm or in terms of wavenumbers around 6500 1 / cm and 4761 1 / cm.

10,000 / wavenumber in cm - 1 = wavelength in μm.

This time, we see that during the period when temperatures increased the most, emissions of upward radiation have decreased through radiative trapping at exactly the same wavenumbers as they increased for downward radiation.

The radiation spectrum for temperatures between 300 k and 250 k only includes a single absorption window for CO2 centred on 14.77 microns wavelength (677 cm ^ -1 wavenumber).

Abstract: «Persistent episodes of extreme weather in the Northern Hemisphere summer have been shown to be associated with the presence of high - amplitude quasi-stationary atmospheric Rossby waves within a particular wavelength range (zonal wavenumber 6 — 8).

If we take an example of a different wavenumber..

This map of air flow a few miles above ground level in the Northern Hemisphere shows the type of wavenumber - 5 pattern associated with US drought.

The wavenumber - 5 pattern is a ring of five high - and low - pressure systems in the atmosphere that circles the Earth's surface above the midlatitudes, or the temperate zone, running in a direction opposite to the flow of the jet stream.

The stronger the amplitude of the wavenumber - 5 pattern, the more likely it was that a heat wave occurred 15 days later.

«People haven't connected this particular wave pattern to the heat waves before,» Teng said, but «many [heat waves] tend to be led by this wavenumber - 5 pattern.»

One theory is that heat from tropical rain warms parts of the Earth's upper atmosphere in ways that favor the formation of the classic «wavenumber - 5» pattern that has alternately drenched and dried parts of California.

This winter, the same pattern emerged, called «wavenumber - 5,» but it was in a slightly different position that allowed the jet stream to push drenching rainstorms into the state, causing flooding and stressing dams.

By analyzing more than 5,900 U.S. heat waves simulated in the computer model, they determined that the heat waves tended to be preceded by a wavenumber - 5 pattern.

During those times when a distinctive «wavenumber - 5» pattern emerged, a major summertime heat wave became more likely to subsequently build over the United States.

During the 20 days leading up to a heat wave in the model results, the five ridges and five troughs that make up a wavenumber - 5 pattern tended to propagate very slowly westward around the globe, moving against the flow of the jet stream itself.

In contrast, the wavenumber - 5 pattern does not rely on conditions in the tropics.

The wavenumber - 5 pattern refers to a sequence of alternating high - and low - pressure systems (five of each) that form a ring circling the northern midlatitudes, several miles above the surface.

They recognized that some historical heat wave events are indeed characterized by a large - scale circulation pattern that indicated a wavenumber - 5 event.

The underlying mechanistic relationship involves the phenomenon of quasi-resonant amplification (QRA) of synoptic - scale waves with that wavenumber range becoming trapped within an effective mid-latitude atmospheric waveguide.