Sentences with phrase «centennial scale changes»

Not exact matches

The working group on coupled biogeochemical cycling and controlling factors dealt with questions regarding the role of plankton diversity, how ocean biogeochemistry will respond to global changes on decadal to centennial time scales, the key biogeochemical links between the ocean, atmosphere, and climate, and the role of estuaries, shelves, and marginal seas in the capturing, transformation, and exchange of terrestrial and open - marine material.

Modes of climate variability contribute to significant MHW variations both regionally, and globally, but do not greatly affect the centennial - scale secular changes described above.

Suppose also that — DESPITE THIS STABILIZING MECHANISM some as - yet unknown ocean circulation cycle operates that is the sole cause of the Holocene centennial scale fluctuations, and that this cycle has reversed and is operating today, yielding a temperature change that happens to mimic what models give in response to radiative forcing changes.

«Ocean warming, acidification and deoxygenation are essentially irreversible on centennial time scales,» found the Royal Society, a London - based group specializing in scientific research, in a 2011 paper, «[O] nce these changes have occurred, it will take centuries for the ocean to recover.

Orbital factors can initiate, but the insolation rate of change due to orbital factors would not drive the detailed processes at a centennial scale (Dansgaard Oeschger etc).

Suppose also that — DESPITE THIS STABILIZING MECHANISM some as - yet unknown ocean circulation cycle operates that is the sole cause of the Holocene centennial scale fluctuations, and that this cycle has reversed and is operating today, yielding a temperature change that happens to mimic what models give in response to radiative forcing changes.

The study by Macias & Johnson (2008) provides not only evidence for the link between decadal - scale changes in the teleconnection patterns (e.g. the Pacific Decadal Oscillation (PDO) index) and the increased fire frequency in the late twentieth century but also an explanation of why the pattern of fire variability and fire - climate relationships changes at different time scales from centennial / decadal to interannual.....

The ice margin near Jakobshavn thus underwent large and rapid adjustments in response to relatively modest centennial - scale Holocene temperature changes, which may foreshadow GIS response to future warming.

c) Michael - Shawn Fletcher, Patricio Iván Moreno: Vegetation, climate and fire regime changes in the Andean region of southern Chile (38 ° S) covaried with centennial - scale climate anomalies in the tropical Pacific over the last 1500 years Quaternary Science Reviews, (16 July 2012) Volume 4, Pages 46 — 56.

Spectral analysis reveals centennial - scale cyclic climate changes with periods of 1220, 1070, 400, and 150 yr.

The platform will complement existing GMES / Copernicus pre-operational components, but will focus on datasets which provide information on climate variability on decadal to centennial time scales from observed and projected climate change impacts in Europe, and will provide a toolbox to generate, compare and rank key indicators.

In the SH, Neisen 2004 lists the more common frequencies he isolated, «Spectral analysis reveals centennial - scale cyclic climate changes with periods of 1220, 1070, 400, and 150 yr.»

Lockwood, M., Bell, C., Woollings, T., Harrison, R. G., Gray, L. J. and Haigh, J. D.: Top - down solar modulation of climate: evidence for centennial - scale change, Environ.

... The evidence comes from a close correlation between inferred changes in production rates of the cosmogenic nuclides carbon - 14 and beryllium - 10 and centennial to millennial time scale changes in proxies of drift ice measured in deep - sea sediment cores.

Additional proxy records that cover the entire CE are needed to investigate decadal - to centennial - scale responses of climate to changes in radiative forcing as well as internal variability at these time scales.

If a generalised forcing is gradually increased (eg WMGHGs) then the * nature of climate change * on the centennial scale will be constrained.

By 2006 some models still found that changes in the ocean circulation «are able to produce abrupt climate changes on decadal to centennial time scales,» Randall et al. (2007), p. 641.

In the Sun, surface differential rotation changes on a centennial time scale coincide with the observed phase change between the toroidal and poloidal magnetic field components and the time dependence of the dipole and quadrupole components of the poloidal magnetic field (Feynman & Ruzmaikin, 2014).

These rapid changes in atmospheric CO2 and CH4 concentrations are also recorded during the Heinrich Stadials of MIS 3, demonstrating an important mechanism that operates on centennial time scales during the glacial and deglaciation, which may point to important thresholds in the global carbon cycle.

The temporal relationship between the Suess solar cycle and particularly significant 210 yr oscillations in the speleothem δ18O records therefore supports the notion that solar variability played a significant role in driving centennial - scale changes in the hydrological cycle in the subtropics during the Holocene.

The bicentennial trend lines clearly diverge from the past 30 or 50 or hundred years, and the most closely fitting explanation for this behavior is anthropogenic causes shifting the trends leaving only a shadow of natural variability superimposed on the sharp centennial scale rise, at about an order of magnitude smaller amplitude than the changes associated with GHGs and dampened by man - made aerosols.