Sentences with phrase «on ocean chemistry»

the real accuracy of the historical data, which may have been too variable because of place, time and method and too inaccurate to conclude anything about a (theoretical, but based on ocean chemistry) trend of 0.1 pH unit over a century...

Combining that with theoretical knowledge on ocean chemistry and on known sources of carbon from burning fossil fuels and other human activities is enough to give a clear picture on main trends.

Experiments on echinoderms, for example, show great sensitivity of reproductive success on ocean chemistry changes but we do not know the potential for micro-evolutionary adaptation.

The major influences on ocean chemistry today are hydrothermal flow (hot water that has circulated through the crust) and surface weathering (the river transport of material eroded from land into the ocean).

Satkoski, who is first author of a new report on ocean chemistry from this remote period, says the conventional wisdom of geology has envisioned an oceanic planet, with little or no land above the waves.

In some ancient eras, according to other recent work on ocean chemistry, marine animals lived in «worlds of lower oxygen,» Lyons says.

The team also developed a model to simulate the impact of volcanoes on ocean chemistry.

Not exact matches

The team then used their dataset from the tropics to back - calculate the temperature and chemistry of polar oceans, relying on previous studies of forams that captured the conditions of those regions.

Now, a 15 - year, 30 - nation research collective called Geotraces is embarking on an ambitious global survey of ocean chemistry to quantify trace elements and shed light on how chemical concentrations fluctuate in response to changing environmental conditions.

These alterations could have an impact on the chemistry, and therefore life, in the ocean and on the rest of the planet.

Scientists believe that dust has profound and somewhat mysterious influences on atmospheric chemistry, solar heat exchange and nutrient supply to the oceans and rain forests.

Because such chemistry provides energy for microbial life on Earth, the discovery makes Enceladus the top candidate for hosting life elsewhere in the solar system — besting even Jupiter's Europa, another icy moon with an ocean.

The findings reveal a crucial and underappreciated role that animals have in ocean chemistry on a global scale, explained first author Daniele Bianchi, a postdoctoral researcher at McGill University who began the project as a doctoral student of atmospheric and oceanic sciences at Princeton.

They then performed chemical extraction on the samples to analyze the sulfur isotope compositions in order to estimate the chemistry of the global ocean.

The findings reveal a crucial and underappreciated role that animals have in ocean chemistry on a global scale.

This study also highlights the impact of fine - scale variation in coastal ocean chemistry on coral reefs.

«When people were thinking about ocean chemistry, it was always centered on hydrothermal flow, but there was little data,» Johnson says.

Much of the research on ocean acidification to date has focused on the effect changing seawater chemistry has on the calcium carbonate shells of shellfish.

Oregon State University oceanographer Robert Dziak says that depending on the size and frequency of these events, their spongelike effects could influence ocean chemistry and temperatures worldwide, making present climate - change models inaccurate.

Titan has diverse, carbon - rich chemistry on a surface dominated by water ice, as well as an interior ocean.

As the LRAUVs move through the ocean, they collect information about water temperature, chemistry, and chlorophyll (an indicator of microscopic algae) and send this data to scientists on shore or on a nearby ship.

«There were big things going on with ocean chemistry,» he said.

At 3 p.m. on Thursday, join Florida State University geochemist William Burnett to chat about how radiation can affect ocean chemistry and its possible effects on marine ecology.

Effects of these plumes on climate and ocean chemistry are not yet clear, but could extend well beyond the plumes themselves.

Their effect on the chemistry of the ocean is unknown as well.

Previous CO2 rises on Earth happened so slowly that the accompanying ocean acidification was relatively minor, and ammonites and other planktonic calcifiers were able to cope with the changing ocean chemistry.

For example, on Heron Island Reef in the GBR, variations in pH and aragonite saturation state over one day were greater than the predicted changes in ocean chemistry globally by 2050.

They want to ask questions that cross scientific boundaries, such as how ocean chemistry affects biology or how the geology on the seafloor affects the physics of flowing water.

The Marine Sciences Laboratory's, Sequim Marine Research Operations is located on Sequim Bay in Washington's Puget Sound, offers various research capabilities in ecotoxicology, analytical chemistry, wetland and coastal ecology, fisheries, ocean processes, remote sensing, biotechnology and remediation.

On glacial - interglacial time scales, atmospheric CO2 is mainly governed by the interplay between ocean circulation, marine biological activity, ocean - sediment interactions, seawater carbonate chemistry and air - sea exchange.

ref It will also be important to encourage socioeconomic research on the impacts of ocean acidification, the projected timing of impacts, and the ways to increase adaptability and resilience of socioeconomic systems in the face of changing ocean chemistry.

«It's a more complicated picture, but broadly it means that there are going to be winners and losers in the oceans as its chemistry is modified by human activities — this could have the effect of altering major ocean ecosystems on which both we and a large part of marine life depend.»

identify where the impacts of acidification on Mediterranean waters will be more significant, taking into account the sequence of causes and effects, from ocean chemistry through marine biology to socio - economic costs.

The researchers used computer models of the Earth's climate system and biosphere to simulate the effect of sunlight - reflecting particles on climate and ocean chemistry.

You can have a differential impact on biology and chemistry, so if you really want to assess what will be the status of calcifying organisms in 2100 there is one part, the chemistry, for which the organisms have no control but for the biology they can perhaps adapt and there might be a way for the organisms to mitigate the negative impacts of ocean acidification.

Continue reading «Comment on «The effects of secular calcium and magnesium concentration changes on the thermodynamics of seawater acid / base chemistry: implications for Eocene and Cretaceous ocean carbon chemistry and buffering» by Hain et al. (2015)»

Increased levels of atmospheric carbon dioxide could also significantly alter ocean temperatures and chemistry over the next century, which could lead to increased and more severe mass bleaching and other stressors on coral reefs.

Cooling of the tectonic plates, and the impact of the ridge flank system on the chemistry of the ocean, are fundamental global - scale processes.

Continue reading «Response to comment by Zeebe and Tyrrell on «the effects of secular calcium and magnesium concentration changes on the thermodynamics of seawater acid / base chemistry: Implications for the Eocene and Cretaceous ocean carbon chemistry and buffering»»

The pair's chemistry was on full display at the Venice Film Festival premiere of The Light Between Oceans.

Have you ever heard about Ocean - acidification and the following impact on chemistry and finally biology of the Oceans?

There's plenty more in the report summary, of course, on everything from changes in sea ice to ocean chemistry.

The review, which is being published in the journal Science on Friday, concludes that the human - driven buildup of carbon dioxide under way now appears to be far outpacing past natural events, meaning that, for ocean chemistry particularly, the biological implications are potentially enormous — and laden with the kind of uncertainty that is hard to see as a source of comfort.

On a multi-century time - scale, results of simple models based on well - known carbon chemistry show that the ocean should take up 70 - 80 % of all the anthropogenic CO2 emitted to the atmosphere (22On a multi-century time - scale, results of simple models based on well - known carbon chemistry show that the ocean should take up 70 - 80 % of all the anthropogenic CO2 emitted to the atmosphere (22on well - known carbon chemistry show that the ocean should take up 70 - 80 % of all the anthropogenic CO2 emitted to the atmosphere (22).

The workshop summarized the state of understanding, key uncertainties and next research steps on the shifting chemistry of the oceans and the impacts on species and ecosystems, with a focus on ecosystems of particular interest to humans.

On CO2 as a fertilizer, in the oceans CO2 is acting as a pollutant and is altering the chemistry (the ph) and the emerging data shows a harmful effect on organismOn CO2 as a fertilizer, in the oceans CO2 is acting as a pollutant and is altering the chemistry (the ph) and the emerging data shows a harmful effect on organismon organisms.

We do not know what changing ocean chemistry will do to marine biota (other than some calcifiers) and especially we do not know what the long - term chronic effects will be on ecosystems.

Climate change, rising atmospheric carbon dioxide, excess nutrient inputs, and pollution in its many forms are fundamentally altering the chemistry of the ocean, often on a global scale and, in some cases, at rates greatly exceeding those in the historical and recent geological record.

Changes in the ocean, ocean chemistry and biology on land and ocean need a lot of study.

You state in the response to # 10, ``... There is no surprise that the CO2 in the atmosphere winds up partially in the oceans, nor that the amount of CO2 going into or coming out of the oceans varies in time and space — that's simple equilibrium chemistry between the liquid (that is, dissolved) and gaseous phases...» Are the buffers a part of simple equilibrium chemistry, and where can I go to read up on this and how it pertains to the Models.