Sentences with phrase «earth orbital eccentricities»

The theory suggests that the system is pushed by greenhouse gas changes and warming — as well as solar intensity and Earth orbital eccentricities — past a threshold at which stage the components start to interact chaotically in multiple and changing negative and positive feedbacks — as tremendous energies cascade through powerful subsystems.

Complexity theory suggests that the system is pushed by such things as solar intensity and Earth orbital eccentricities — past a threshold at which stage the components start to interact chaotically in multiple and changing negative and positive feedbacks — as tremendous energies cascade through powerful subsystems.

The theory suggests that the system is pushed by greenhouse gas changes and warming — as well as solar intensity and Earth orbital eccentricities - past a threshold at which stage the components start to interact chaotically in multiple and changing negative and positive feedbacks — as tremendous energies cascade through powerful subsystems.

Not exact matches

«Step back and think about this: Small variations in the orbital parameters of the Earth — tilt and eccentricity and wobble — are recorded on the sea floor,» says Richard Katz, a geodynamicist at the University of Oxford in the United Kingdom and a co-author of the Science paper.

These Milankovitch cycles are tied to Earth's wobbly orbital axis, its oscillating axial tilt, and its orbital eccentricity.

It has an estimated orbital period of approximately 12 Earth days — smaller than that of Mercury — with a semimajor axis of 0.10 AU and an eccentricity smaller than 0.24.

Planet «b» has 7.5 Earth - masses at an average orbital distance of 0.08 with a period of only 9.5 days and an orbital eccentricity near 0.40.

It is believed that the PETM was likely initiated by changes of the orbital parameters of the Earth (eccentricity, obliquity and precession of axis) causing an increase in the intensity and distribution of solar radiation reaching the earth (Sexton et al, 2Earth (eccentricity, obliquity and precession of axis) causing an increase in the intensity and distribution of solar radiation reaching the earth (Sexton et al, 2earth (Sexton et al, 2011).

In particular, during the last 800,000 years, the dominant period of glacial — interglacial oscillation has been 100,000 years, which corresponds to changes in Earth's eccentricity and orbital inclination.

On March 4, 2014, a team of astronomers announced that analysis of new and older radial - velocity data from nearby red dwarf stars revealed two super-Earths «b» and «c» with minimum earth - masses of 4.4 (+3.7 / -2.4) and 8.7 (+5.8 / -4.7), respectively, at average orbital distances of 0.080 (+0.014 / -0.004) and 0.176 (+0.009 / -0.030) AU, respectively, from host star Gl 682, with orbital eccentricities of 0.08 (+0.19 / -.08) and 0.010 (+0.19 / -0.10) and periods around 17.5 and 57.3 days, respectively (UH news release; and Tuomi et al, 2014).

This orbits places the planet near the inner edge of its host star's habitable zone, where liquid water could exist in liquid form under favorable conditions such as an albedo of 0.52 with an orbital eccentricity of 0.11 and more than 52 percent cloud cover under a sufficiently dense atmosphere of water, carbon dioxide, and molecular nitrogen like Earth's (ESO science release; Pepe et al, 2011; and Kaltenegger et al, 2011 — more below).

Although the current average global temperature from Earth's current circular orbit is 58 ° F (14.4 ° C), it would rise to 73 ° F (22.8 °C) with an orbital eccentricity of 0.3.

Raymo and Paillard have a good story about the 100KYr cycle arising from the modulation of the precessional cycle by the changes in the Earth's orbital eccentricity, coupled with some glacial dynamical effects which «rectify» the high frequency precessional signal.

The Pleistocene ice ages seem to correlate with periodicities in the Earth's orbital eccentricity, axial tilt, and precession.

Both coincided with a minimum of the earth's orbital eccentricity around the sun.

It is increasingly evident that we are on the cusp of both the next major ice age (as in 1 mile thick ice in Chicago and NYC) caused by the orbital eccentricity and the tilt of the Earth's axis (See Milankovitch cycles below) and the next mini ice age (see Maunder, and Dalton, or Rohrer minimum related to the location and number of sunspots (below)-RRB-.

In my essay I noted that the overall / net change is very small, and really is just non-zero only due to two effects: (a) The orbital eccentricity alters very slightly; and (b) The Earth is not spherical.

A link between Earth's orbital eccentricity and NADW production with high eccentricity leading to low production of NADW and vice versa is proposed by Crowley and Kim (1992).

Precession refers to the fact that both Earth's rotational axis and orbital path precess (rotate) over time — the combined effects of these two components and the eccentricity produce an approximately 21,000 - year cycle.

These climate oscillations have dominant periodicities, ranging from about 20 to 400 kyr, that coincide with variations in the Earth's orbital elements [26], specifically the tilt of the Earth's spin axis, the eccentricity of the orbit and the time of year when the Earth is closest to the Sun.

Palaeoclimate studies show that differences in the manner in which the Earth orbited the Sun during the Last Interglacial are sufficient to explain the higher temperatures over most parts of the Northern Hemisphere, particularly due to greater axial tilt and eccentricity compared with the present day orbital configuration.

Atmospheric dynamics, solar cycles, Milankovic factors respecting Earth's axial tilt, orbital eccentricity, equinoctial precession etc. remain constant in historical context and perspective.