Sentences with word «hyperthermal»

These features, they noted, are very similar to the geologic leftovers of the PETM and other hyperthermal events.

The authors believe their research helps pin the cause of hyperthermals on long - term rhythms in the CO2 cycle for that 10 million year period.

The similarities of these other hyperthermals with the PETM were taken as being suggestive of a common mechanism (s) giving rise to them all.

The role of proxies in further refining our ability extract further insights from early Cenozoic hyperthermals and other warm climates will be emphasized.

The current thinking is that the PETM is not likely an orbitally forced event even if some of the subsequent hyperthermals may have been.

The discovery of other, smaller magnitude, rapid greenhouse warming events (called hyperthermals) in the millions of years following the PETM provides further opportunities to examine the response of organisms to global climate change.

We still do not know what processes triggered hyperthermals, the source (s) of carbon released, and their wider Earth system impacts.

«I am so happy that more of these types of nanoparticle - based hyperthermal therapies are being developed to increase the arsenal of weapons against cancer.»

«No other terrestrial record exists with the density of fossils necessary to test faunal response to the later hyperthermals [climatic warming].

These so - called «modest hyperthermals» (meaning a rapid, pronounced period of global warming) had shorter durations and recoveries (about a 40,000 year cycle) and involved an exchange of carbon between surface reservoirs into the atmosphere and then into sediment.

At that point hyperthermal events were much stronger, and needed 200,00 years to come down from their high.

Whatever their cause, such hyperthermals have not been seen for 40 million years - until now.

The rate of current temperatures rises, caused by mass CO2 released from fossil - fuel burning, may be kicking off the first hyperthermal event in tens of millions of years.

Arctic climatic extremes include 25 °C hyperthermal periods during the Paleocene - Eocene (56 — 46 million years ago, Ma), Quaternary glacial periods when thick ice shelves and sea ice cover rendered the Arctic Ocean nearly uninhabitable, seasonally sea - ice - free interglacials and abrupt climate reversals.

This presentation will show evidence that the non-PETM hyperthermals were triggered by orbital pacing of the regular processes that readily redistribute carbon between reservoirs at Earth's surface.

The breakup of Pangaea was accompanied by biogeochemical disturbances including the largest magnitude perturbation of the carbon - cycle in the last 200 Myr, coeval with the now well - characterised hyperthermal, the Toarcian Oceanic Anoxic Event (T - OAE).

New data emerging for subsequent smaller hyperthermals show similar patterns.

Conceptual models for explaining hyperthermals, OAEs, and other similar phenomena in Earth history, make specific predictions about the role and pattern of temperature change during such events, which can be tested through comparison with the geological record.

He has a particular interest in the relationship between volcanism and past climate change, including the possible trigger mechanisms for the enigmatic warming events known as hyperthermals, such as the PETM.

These controls are extremely similar to those highlighted as critical drivers of anoxia during the Mesozoic Oceanic Anoxic Events, suggesting that the PETM should be considered in a similar vein to these older hyperthermals.

Ying's research deals with carbon cycles during ancient hyperthermal events, such as the Paleocene - Eocene Thermal Maximum and the end - Permian mass extinction event.

The Llanbedr (Mochras Farm) borehole in west Wales, originally drilled 50 years ago, provides the basis for placing the T - OAE, and other possible Early Jurassic hyperthermals, in a long - term stratigraphic and timescale context.

The early Eocene hyperthermals, a series of transient global warming events (2 to 5 °C, provide a unique opportunity to assess the sensitivity of the hydrologic cycle to the scale of greenhouse forcing expected over the next several centuries.

Exceptionally voluminous and prolonged Siberian Traps volcanism has been widely accepted as the trigger for the end - Permian hyperthermal.

In the case of the PETM and other Cenozoic hyperthermals, the CO2 may be the initial cause, so it would be treated as a forcing rather than a feedback.

Methane hydrates — methane molecules trapped in frozen water molecule cages in tundra and on continental shelves — and organic matter such as peat locked in frozen soils (permafrost) are likely mechanisms in the past hyperthermals, and they provide another climate feedback with the potential to amplify global warming if large scale thawing occurs [209]--[210].

In the decades following the discovery of the PETM, numerous other hyperthermals have been discovered, marked by coeval excursions in the carbon and oxygen isotope compositions of benthic foraminifera and bulk sediment.

They are called hyperthermals - periods of intense and sudden rises in temperature, lasting tens of thousands of years.

the magnitude and timing of the PETM and subsequent hyperthermals can be explained by the orbitally triggered decomposition of soil organic carbon in circum - Arctic and Antarctic terrestrial permafrost.

We also include in the category of slow feedbacks the global warming spikes, or «hyperthermals», that have occurred a number of times in Earth's history during the course of slower global warming trends.

The average rate of injection of carbon into the climate system during these hyperthermals was slower than the present human - made injection of fossil fuel carbon, yet it was faster than the time scale for removal of carbon from the surface reservoirs via the weathering process [3], [208], which is tens to hundreds of thousands of years.

The mechanisms behind these hyperthermals are poorly understood, as discussed below, but they are characterized by the injection into the surface climate system of a large amount of carbon in the form of CH4 and / or CO2 on the time scale of a millennium [205]--[207].

Climate model studies and empirical analyses of paleoclimate data can provide estimates of the amplification of climate sensitivity caused by slow feedbacks, excluding the singular mechanisms that caused the hyperthermal events.

The resort offers spacious beach strip, 1 km long and 20 m - 80 m wide, a calm sea with sandy bottom that gradually becomes deeper, a natural park with rare tree species and curative mineral waters springs with temperature of 45 ° С, low mineral content, hyperthermal, hydrocarbonic, with traces of calcium, sodium, magnesium, sulphides, chlorides.

It's not like there isn't anything climate - y to talk about (sea ice minimums, extreme events, climate model tunings, past «hyperthermals»... etc.).

Norris said «These hyperthermals seem not to have been rare events, hence there are lots of ancient examples of global warming on a scale broadly like the expected future warming.

It is the acidic nature of the oceans which is the tell - tale signal for a hyperthermal event.

This CO2 - driven acidification of the oceans is already under way in our own epoch of global warming - and that same oceanic response in the past coincides with massive rises in temperature - the hyperthermal.

Starting 50 million years ago, these hyperthermal events seem to have been triggered every 400,000 years, and involved temperature rises of 3 F to 5 F (2 C to 3 C) that lasted up to 40,000 years.