Sentences with phrase «ocean cycles as»

Forcing agents vary such as surface reflectivity, greenhouse gases and natural variation in atmospheric and ocean cycles as well as longer term forcing agents such as the Milankovitch cycles that drive long term climate change.

I don't know whether these results are totally realistic, but they certainly look plausible, and they identify ocean cycles as the main source of regional temperature variations.

I notice in my post above that I identified ocean cycles as the main source of regional temperature variations.

The old headlines were «IPCC ignores ocean cycles as partial cause for 1978 - 1998 warming».

The oscillation of about 0.5 deg C about every 30 years is due to ocean cycles as described in the following paper:

The cooling from 1950 to 1970 is due to the cooling phase of the ocean cycle as shown in the following paper (Figure 4): http://bit.ly/nfQr92

Not exact matches

There are other cycles in nature, such as the water cycle, in which water circulates between the atmosphere and the soil and oceans and rivers.

June 17, 2013 — A new subduction zone forming off the coast of Portugal heralds the beginning of a cycle that will see the Atlantic Ocean close as continental Europe moves closer to America.

It is great that this cruise departed from the National Oceanography Centre Southampton, which hosts a large scientific community that uses ocean drilling as a key tool to unravel how our planet operates and past climate and tectonic cycles.»

Looking at shifts in Manley's winter temperatures from year to year, he says, gives a good reading of important natural cycles that influence climate, such as changes in ocean circulation like the North Atlantic Oscillation.

«Understanding nitrogen cycling is crucial to understanding the productivity of the oceans as well as the global climate,» he said.

Seasonal weather fluctuations also depend on factors such as proximity to oceans or other large bodies of water, currents in those oceans, El Nino / ENSO and other oceanic cycles, and prevailing winds.

Charlie's research told him that during El Niño weather cycles, the surface seawaters in the Great Barrier Reef lagoon, already heated to unusually high levels by greenhouse gas — induced warming, were being pulsed from a mass of ocean water known as the Western Pacific Warm Pool onto the reef's delicate living corals.

Using sediment gathered from the ocean floor in different areas of the world, the researchers were able to confirm that as the ice sheets started melting and the climate warmed up at the end of the last ice age, 18,000 years ago, the marine nitrogen cycle started to accelerate.

And just as proteins are carried by the blood and circulate through the body, the nitrogen in the ocean is kept in balance by marine bacteria through a complicated cycle that keeps the ocean healthy.

They're putting these tools to use to ask questions not just about ocean ecology, but about the carbon cycle as well.

«This work will help increase our understanding of climate change, carbon cycling, and ocean acidification in the Arctic, particularly as it affects marine and fishery science and technology,» added Chen.

When the climate warmed in the late 1800s, it triggered the retreat phase of the tidewater glacier cycle as warm ocean water melted the ice.

This suggests that natural cycles — such as the succession of El Nino and La Nina conditions in the Pacific Ocean — forced these climate anomalies.

In a new study recently published in the journal Global Biogeochemical Cycles, scientists of Kiel University (CAU) with colleagues from GEOMAR Helmholtz Centre for Ocean Research Kiel and international partners from the USA, New Zealand, and Great Britain studied marine benthic shell - forming organisms around the world in relation to the chemical conditions they currently experience — with a surprising result: 24 percent, almost a quarter of the analyzed species, including sea urchins, sea stars, coralline algae or snails, already live in seawater unfavorable to the maintenance of their calcareous skeletons and shells (a condition referred to as CaCO3 - undersaturation).

When these worms began to mix up the ocean floor's sediments (a process known as bioturbation), their activity came to significantly influence the ocean's phosphorus cycle and as a result, the amount of oxygen in Earth's atmosphere.

Little was known of the life cycle of internal waves that can reach as high as a 100 - story building yet barely cause a ripple on the ocean's surface, said Harper Simmons, an oceanographer with the UAF School of Fisheries and Ocean Scieocean's surface, said Harper Simmons, an oceanographer with the UAF School of Fisheries and Ocean ScieOcean Sciences.

SEA CHANGE A rethink of earlier studies suggests trouble ahead for a major player in ocean nutrient cycles, the nitrogen - fixing Trichodesmium microbes, which can grow in abundance as seen is this image (pale streaks).

The study marks the first time that human influence on the climate has been demonstrated in the water cycle, and outside the bounds of typical physical responses such as warming deep ocean and sea surface temperatures or diminishing sea ice and snow cover extent.

The study bolsters the idea that Mars once had a warmer climate and active hydrologic cycle, with water evaporating from an ancient ocean, returning to the surface as rainfall and eroding the planet's extensive network of valleys.

In 1995, this cycle, known as the Atlantic Multidecadal Oscillation, switched to a phase that generally leads to higher Atlantic Ocean temperatures.

Assistant Professor of Earth, Ocean and Atmospheric Science Robert Spencer and a team of researchers traveled to Siberia from 2012 to 2015 to better understand how thawing permafrost affected the carbon cycle and specifically to see if the vast amounts of carbon stored in this permafrost were thawing and how it w transferring to the atmosphere as carbon dioxide.

«This kind of study discusses the natural cycle and could help define the likely positive feedbacks we can expect in the long - term future, [for example] as temperatures warm, the ocean will want to give up more CO2, or rather absorb less,» says climatologist Gavin Schmidt of NASA's Goddard Institute of Space Studies.

Now, new evidence from a marine sediment core from the deep Pacific points to warmer ocean waters around Antarctica (in sync with the Milankovitch cycle)-- not greenhouse gases — as the culprit behind the thawing of the last ice age.

Bacteria, however, have remained Earth's most successful form of life — found miles deep below as well as within and on surface rock, within and beneath the oceans and polar ice, floating in the air, and within as well as on Homo sapiens sapiens; and some Arctic thermophiles apparently even have life - cycle hibernation periods of up to a 100 million years while waiting for warmer conditions underneath increasing layers of sea sediments (Lewis Dartnell, New Scientist, September 20, 2010; and Hubert et al, 2010).

Water constantly moves through a vast global cycle, evaporating from lakes and oceans, forming clouds, precipitating as rain or snow, then flowing back down to the ocean.

January 2004: «Directions for Climate Research» Here, ExxonMobil outlines areas where it deemed more research was necessary, such as «natural climate variability, ocean currents and heat transfer, the hydrological cycle, and the ability of climate models to predict changes on a regional and local scale.»

Through comparison of the sea - surface temperature data extending back to the 1860s, it has been determined that the Earth's ocean temperature appears to pass through a 10 - year cycle as well as the 3 - year to 4 - year cycle.

Between 2009 and 2017, the German research network BIOACID (Biological Impacts of Ocean Acidification) investigated how different marine species respond to ocean acidification, how these reactions impact the food web as well as material cycles and energy turnover in the ocean, and what consequences these changes have for economy and socOcean Acidification) investigated how different marine species respond to ocean acidification, how these reactions impact the food web as well as material cycles and energy turnover in the ocean, and what consequences these changes have for economy and sococean acidification, how these reactions impact the food web as well as material cycles and energy turnover in the ocean, and what consequences these changes have for economy and sococean, and what consequences these changes have for economy and society.

It's theoretically possible that some internal cycle in the ocean circulation could give Holocene temperature fluctuations as big as the LIA, but until one identifies such a mechanism, it's essentially impossible to say what the consequences would be for climate sensitivity.

Naturally occurring interannual and multidecadal shifts in regional ocean regimes such as the Pacific El Niño - Southern Oscillation, the North Atlantic Oscillation, and the Atlantic Multidecadal Oscillation, for example, are bimodal oscillations that cycle between phases of warmer and cooler sea surface temperatures.

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.

While not nearly as dramatic, the influence of solar, ocean, and wind patterns is much more immediate, but these effects generally alternate between warming and cooling over the course of months to decades in relation to their respective cycles.

«Changes in ocean circulation have been proposed as a trigger mechanism for the large coupled climate and carbon cycle perturbations at the Paleocene - Eocene Thermal Maximum (PETM, ca. 55 Ma).

The consensus is that several factors are important: atmospheric composition (the concentrations of carbon dioxide, methane); changes in the Earth's orbit around the Sun known as Milankovitch cycles (and possibly the Sun's orbit around the galaxy); the motion of tectonic plates resulting in changes in the relative location and amount of continental and oceanic crust on the Earth's surface, which could affect wind and ocean currents; variations in solar output; the orbital dynamics of the Earth - Moon system; and the impact of relatively large meteorites, and volcanism including eruptions of supervolcanoes.

(Though, since that first episode covered primarily the oxygen cycle, diatoms and algae blooms were just mentioned as the source of half of the oxygen we breathe, as opposed to rainforests, which are important for the rain cycle that gets nutrients from the mountains into the oceans but which are using up all the oxygen they produce.

The carbon cycle defines the fate of CO2 injected into the air by fossil fuel burning [1], [168] as the additional CO2 distributes itself over time among surface carbon reservoirs: the atmosphere, ocean, soil, and biosphere.

Cooling sea - surface temperatures over the tropical Pacific Ocean — part of a natural warm and cold cycle — may explain why global average temperatures have stabilized in recent years, even as greenhouse gas emissions have been warming the planet.

There are some very detailed warnings for supplements, medications and more, for those of us who have some of these genetic mutations (I like the term variant better, but you'll see mutation in many texts as you dive into the ocean of genetics) in the methylation cycle.

As it is represented by the element of water the moon symbol relates to the connection between the cycle of the moon and the power it has over the ocean and the tides.

Photo pack — Colourful A4 poster pack showing key things related to the water cycle, such as sun, snow, rain, ocean etc Water cycle diagram to label and colour Several versions of images showing the complete water cycle with varying levels of difficulty Extra large images to make a full water cycle display — eg A4 size sun, clouds, rain drops, etc Fact cards — half 4 size with facts about water and the water cycle — great for reading or display Key word cards — half A4 size showing all words relating to the water cycle Water cycle booklet to complete Presentation to make with cue cards for pupils to complete Draw a water cycle worksheet Acrostic poem to complete True or false quiz Sentence writing sheet to summarise topic understanding Mind map Weather types matching cards to use as memory card game World map to demonstrate size of oceans Long banner to head display Extra large patterned lettering to head wall display (patterned with raindrops) 3 patterned and plain display borders Writing booklet cover to keep pupils project work together Writing border with water cycle image to use for generic writing tasks Word search Sack tag to keep resources organised

For example, 2nd - grade students created an activity book for a seafood restaurant, developing their writing skills and vocabulary as they learned about ocean habitats, life cycles, and systems.

The activity book the 2nd graders created showed their scientific understanding of ocean habitats, life cycles, and systems, as well as form and function.

This simulates the changing tides in the ocean, and it can be tied to light cycles as well.

Chronicling the artworks — from installation to their encounters with divers and aquatic life — the installation tunes viewers into the rhythm of the ocean and its life cycles, as the structures adjust with the currents and time of day.