Sentences with phrase «year time scales within»

Not exact matches

In conclusion, our genome - scale analysis supports the hypothesis of a rapid radiation of diverse species occurring within a relatively short period of time (36 lineages within 10 to 15 million years; Fig. 1) during the K - Pg transition, with many interordinal divergences in the 1 - to 3 - million - year range.

Researchers estimate that all of the remaining gas will be ejected within the next 300 million years — very soon on cosmic time scales — unless it is somehow replenished.

However, within a year of the Kindle launch we saw for the first time, true scale being achieved with ebooks.

Robinson presented his earliest paintings at the historic Times Square Show organized by Colab in 1980 at an abandoned building on West 41st Street, and within two years was exhibiting modestly scaled but brashly colored paintings of pulp romance cover illustrations at the seminal Metro Pictures gallery.

The Science Magazine article that Will misrepresents as supporting the «ice age» mistake actually debunked it explicitly (says the time scale within which we can expect or predict an ice age is around «20,000 years»)-- Will misrepresents it as warning readers the problem is imminent).

Less certain is the time scale, with the onset of rapid (> 1 mm per year of sea - level rise) collapse in the different simulations within the range of 200 to 900 years.

Of course geological history suggests that neither run away warming nor catastrophic cooling (within the time scales of years to several decades) are anything other than highly improbable (without some catastrophe such as a major asteroid strike), but it is the job of military planners to have some contingency for all eventualities.

-- Lyu et al., 2016 Within the last 1,000 years, global - scale surface temperatures underwent a warm period during Medieval times, centennial - scale cooling during the 14th to 19th centuries, and another warm period since the early 20th century.

''... worked with two sediment cores they extracted from the seabed of the eastern Norwegian Sea, developing a 1000 - year proxy temperature record «based on measurements of δ18O in Neogloboquadrina pachyderma, a planktonic foraminifer that calcifies at relatively shallow depths within the Atlantic waters of the eastern Norwegian Sea during late summer,» which they compared with the temporal histories of various proxies of concomitant solar activity... This work revealed, as the seven scientists describe it, that «the lowest isotope values (highest temperatures) of the last millennium are seen ~ 1100 - 1300 A.D., during the Medieval Climate Anomaly, and again after ~ 1950 A.D.» In between these two warm intervals, of course, were the colder temperatures of the Little Ice Age, when oscillatory thermal minima occurred at the times of the Dalton, Maunder, Sporer and Wolf solar minima, such that the δ18O proxy record of near - surface water temperature was found to be «robustly and near - synchronously correlated with various proxies of solar variability spanning the last millennium,» with decade - to century - scale temperature variability of 1 to 2 °C magnitude.»

Thirty years to establish a climate state seems a long time, as within that period there may be notable shifts to a number of different prevailing patterns of cold / warmth / wet or drought that, on a human scale affects agriculture and horticulture by impacting on what crops may be grown successfully, may affect the tourism season, may cause a consumer to use more or less energy in their home, and also impact on nature by affecting the populations of wild life and vegetation.

The two studies look at very different time scales; thousands of years vs millions, But both help show just how connected the day - to - day climate of the Earth is to the motions of the planets within our solar system.

About half of a CO2 pulse to the atmosphere is removed over a time scale of 30 years; a further 30 % is removed within a few centuries; and the remaining 20 % will typically stay in the atmosphere for many thousands of years.

On longer time scales, sediment cores show that the cycles of glacials and interglacials are part of a deepening phase within a prolonged ice age that began with the glaciation of Antarctica approximately 40 million years ago.

In Fig. 1, use has been made of conservation of energy and the assumption that, on a time scale of years, the change in heat storage within the atmosphere is very small.

The «relatively uneventful» blockchain split, which is the culmination of the years - long scaling debate within the bitcoin community as they search for a way to increase the network's capacity from the original 1 MB, caused the price of bitcoin to jump past the $ 3,000 for the first time.

We initially obtained data about the frequency with which participants had contact with close persons, including friends, relatives, or neighbors, using a 10 - point scale (always, 2 — 3 times per week, once per week, twice per month, once per month, 5 — 6 times per year, 3 — 4 times per year, 1 — 2 times per year, hardly ever within a year, and never due to the absence of close relationships) in response to the following questions: «Are you close to any persons, such as friends, relatives, or neighbors?