Sentences with phrase «in palaeoclimate»

He is interested in palaeoclimate proxies, biotic evolution and stratigraphy, with particular emphasis on the fossil record of planktonic foraminifera from deep sea cores.

If non-CO2 GHGs such as N2O and CH4 increase with global warming at the same rate as in the palaeoclimate record and atmospheric chemistry simulations [122], these other gases provide approximately 25 % of the greenhouse forcing.

While present in palaeoclimate records, the drivers behind 20 - year climate variability are poorly understood.

Your point 4: «The early onset of sustained, significant warming in palaeoclimate records and model simulations suggests that greenhouse forcing of industrial - era warming commenced as early as the mid-nineteenth century and included an enhanced equatorial ocean response mechanism.

Not exact matches

These changes coincide with the different palaeoclimate zones proposed in the models, so the faunal distribution was probably climate - related,» comments Josep Fortuny, an ICP researcher who took part in the study.

«Palaeosens (2012)» — the reference in footnote 1 — is http://www.nature.com/nature/journal/v491/n7426/abs/nature11574.html Making sense of palaeoclimate sensitivity PALAEOSENS Project Members

In models run with the GISS forcing data, the «natural + anthropogenic» temperature evolution matches observations very well for a climate sensitivity of 0.75 °C / W / m ², which agrees with the value derived from palaeoclimate data.

In all this, why don't you pay attention to the physical models we have: the climate over the last few decades, and palaeoclimate.

«Palaeosens (2012)» — the reference in footnote 1 — is http://www.nature.com/nature/journal/v491/n7426/abs/nature11574.html Making sense of palaeoclimate sensitivity PALAEOSENS Project Members

In trying to answer this question, some scientists (such as Dr Schmidt) refer to the palaeoclimate record.

I'm chagrined to report that I sailed across the site of the 1452 eruption in 1975, but did not recognize the Kuwae caldera's island remnants as such, as I was searching the New Hebrides (now Vanuatu) for archaeological lithic sources, not palaeoclimate clues.

Here we present a stricter approach, to improve intercomparison of palaeoclimate sensitivity estimates in a manner compatible with equilibrium projections for futureclimate change.

Many palaeoclimate studies have quantified pre-anthropogenic climate change to calculate climate sensitivity (equilibrium temperature change in response to radiative forcing change), but a lack of consistent methodologies produces awide range of estimates and hinders comparability of results.

By Amber Bentley (Aged 11) In just 16 pages, this wonderful book covers the structure of the atmosphere, solar radiation, the water cycle, clouds, fronts, convection, air pressure, air masses, the global atmospheric circulation, making weather observations, forecasting, synoptic charts, hurricanes, regional climate, palaeoclimates and anthropogenic climate change.

Nature has a very detailed discussion of these «holes» in climate science (regional climate forecasts, precipitation forecasts, aerosols and palaeoclimate data).

Her research interests include identifying and understanding variations and trends in Australian climate extremes; investigating the role of multi-decadal scale climate variability in the Australian region; and characterising pre-instrumental climate variations in Australia and Antarctica using palaeoclimate data.

Accounting for this results in recent historical estimates for TCR and ECS that are more consistent with constraints based on palaeoclimate data and process - based constraints from modern climatology.

Posted by Quirin Schiermeier Categories: Biosphere feedbacks, GHG emissions, In the News, Ocean science, Palaeoclimate, Quirin Schiermeier, Recent contributors

Evidence from palaeoclimate records suggests that this circulation has changed dramatically in the past, and there is concern that it could be disrupted in the future.

Nature has singled out four areas — regional climate forecasts, precipitation forecasts, aerosols and palaeoclimate data — that some say deserve greater open discussion, both within scientific circles and in the public sphere.

The results have implications for how we interpret the impact of global warming on the hydrological cycle and its extremes, and may help to explain why palaeoclimate drought reconstructions based on tree - ring data diverge from the PDSI - based drought record in recent years9, 10.

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.

«Several important caveats must be borne in mind when using tree - ring data for palaeoclimate reconstructions.

the figures in the above were based on: «Deriving global climate sensitivity from palaeoclimate reconstructions» Hoffert and Covey, Nature Vol 360, 10th December 1992.

In using AOGCM output in this way, it is important not only to demonstrate that these unforced simulations do not drift significantly (Osborn, 1996), but also to evaluate the extent to which model estimates of low - frequency variability are comparable to those estimated from measured climates (Osborn et al., 2000) or reconstructed palaeoclimates (Jones et al., 1998In using AOGCM output in this way, it is important not only to demonstrate that these unforced simulations do not drift significantly (Osborn, 1996), but also to evaluate the extent to which model estimates of low - frequency variability are comparable to those estimated from measured climates (Osborn et al., 2000) or reconstructed palaeoclimates (Jones et al., 1998in this way, it is important not only to demonstrate that these unforced simulations do not drift significantly (Osborn, 1996), but also to evaluate the extent to which model estimates of low - frequency variability are comparable to those estimated from measured climates (Osborn et al., 2000) or reconstructed palaeoclimates (Jones et al., 1998).

He is an organic geochemist with specific expertise in geomicrobiology and palaeoclimate reconstruction, with an emphasis on developing and applying molecular proxies for ancient carbon dioxide concentrations and temperatures.

Had the warming of the late 20th century been caused by a wobble in ocean currents as Ferrara insists, such a wobble would be plainly evident within palaeoclimate records.

My work also concerns past, present, and future stability of the West Antarctic Ice Sheet, as well as palaeoclimate - archaeologic links in the high Andes.