Not exact matches
While this is bad news for the planet, it's good news for climate
change scientists who have — for the last two decades — puzzled over warming trends in
ocean surface temperatures for nearly 20
years.
It's strange how quickly my mindset
changed from de-risking to increasing risk in two
years, but I decided to take on $ 1,000,000 more in debt to buy a fixer in Golden Gate Heights because my online revenue was growing, my net worth had rebounded, and I strongly believed buying a panoramic
ocean view home on both levels for $ 720 / sqft was a no brainer.
Ah yes and the flood happened about 5000
years ago... and out of 2 of each they were able breed without defects and survive the predators... and breed more and then some of the same breeds would
change and trael across the
oceans liek to Australia, the islands... etc..
So explain the salinity
changes in the
ocean and apply them to Billion
years ago within 1 % margin of error...
The theme for this
year's World
Oceans Day is Youth: The Next Wave for
Change.
So a message to you little humans, we love you and you're damn cute, but until you can leave home and live in the
ocean for a whole
year without someone
changing your nappy or feeding you old people's food, you've got nothing to complain about, so just....
DEC Commissioner Basil Seggos announced the release of the final
Ocean Action Plan, the first - ever comprehensive 10 - year blueprint to guide the protection and conservation of New York's ocean resources from environmental threats such as ocean acidification due to climate ch
Ocean Action Plan, the first - ever comprehensive 10 -
year blueprint to guide the protection and conservation of New York's
ocean resources from environmental threats such as ocean acidification due to climate ch
ocean resources from environmental threats such as
ocean acidification due to climate ch
ocean acidification due to climate
change.
Improving projections for how much
ocean levels may
change in the future and what that means for coastal communities has vexed researchers studying sea level rise for
years, but a new international study that incorporates extreme events may have just given researchers and coastal planners what they need.
Research conducted at The University of Texas at Austin has found that
changes in
ocean currents in the Atlantic Ocean influence rainfall in the Western Hemisphere, and that these two systems have been linked for thousands of y
ocean currents in the Atlantic
Ocean influence rainfall in the Western Hemisphere, and that these two systems have been linked for thousands of y
Ocean influence rainfall in the Western Hemisphere, and that these two systems have been linked for thousands of
years.
«The study demonstrates a robust century - scale link between
ocean circulation
changes in the Atlantic basin and rainfall in the adjacent continents during the past 4,000
years,» said UTIG Director Terry Quinn, a co-author on the study.
Roger Haagmans, ESA's Swarm mission scientist, explained, «It's astonishing that the team has been able to use just two
years» worth of measurements from Swarm to determine the magnetic tidal effect from the
ocean and to see how conductivity
changes in the lithosphere and upper mantle.
Year - to - year changes in Greenland melt since 1979 were already known to be closely tied to North Atlantic ocean temperatures and high - pressure systems that sit above Greenland during the summer — known as summer blocking hi
Year - to -
year changes in Greenland melt since 1979 were already known to be closely tied to North Atlantic ocean temperatures and high - pressure systems that sit above Greenland during the summer — known as summer blocking hi
year changes in Greenland melt since 1979 were already known to be closely tied to North Atlantic
ocean temperatures and high - pressure systems that sit above Greenland during the summer — known as summer blocking highs.
Coral cores stretching back more than 6,000
years reveal that climate
change in the Indian
Ocean may mean greater droughts in Indonesia and Australia
Based on modeling results by the National Oceanic and Atmospheric Administration (NOAA), which predicted that Pacific
Ocean temperatures would rise by 1 degree Celsius (2 degrees Fahrenheit) over the next 50
years, a Canadian and U.S. team of scientists examined the distributional
changes of 28 species of fish including salmon, herring, certain species of sharks, anchovies, sardines and more northern fish like pollock.
Changes in
ocean salinity, nutrient runoff and other pollution can cause small - scale bleaching, but scientists say the widespread global bleaching this
year is a symptom of unusual
ocean warming.
In some locations, seismograms have been faithfully recording every shake in the Earth's crust for nearly a century, meaning geologists can dissect what Bromirski calls the «treasure trove» of archived paper drums — and find out how
ocean waves have
changed over the last 100
years.
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.
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.
For instance, next
year the ship JOIDES Resolution is scheduled to drill into the floor of the Pacific
Ocean to extract rock cores that will span the period from about 53 million to 18 million
years ago, a time of vast climate
change.
The study concludes that North Atlantic
ocean temperatures and summer blocking activity will continue to control
year - to -
year changes in Greenland melt into the future.
However, while rangeomorphs were highly suited to their Ediacaran environment, conditions in the
oceans continued to
change and from about 541 million
years ago the «Cambrian Explosion» began — a period of rapid evolutionary development when most major animal groups first appeared in the fossil record.
Cycles that drive
changes in the
ocean's chemistry and organisms take place over hours, days, seasons,
years and even decades — timescales NEPTUNE can track.
«Our work pinpoints the time when the
ocean began accumulating oxygen at levels that would substantially
change the
ocean's chemistry and it's about 250 million
years earlier than what we knew for the atmosphere.
Climate
change could reduce oxygen levels in the
oceans by 40 per cent over the next 8000
years, leading to dramatic
changes in marine life
Timothy Lyons at the University of California, Riverside, and colleagues have worked out how phosphate levels
changed in Earth's
oceans over the last 3 billion
years by measuring the relative amounts of phosphorus in 700 samples from various rock formations around the world.
The Arctic took another 3,000 - 4,000
years to warm this much, primarily because of the fact that the Northern Hemisphere had huge ice sheets to buffer warming, and the fact that
changes in
ocean currents and Earth's orbital configuration accelerated warming in the south.
In the
year 2100, 2 billion people — about one - fifth of the world's population — could become climate
change refugees due to rising
ocean levels.
The researchers looked specifically at the average fishing revenue in 106 Alaskan communities for 10
years before and after 1989, a
year when the North Pacific
Ocean experienced a significant shift in productivity and abrupt
changes in the composition of marine food webs, while at the same time the global price for salmon dropped because of competition from farm - raised fish.
Seeing the sharp declines in parts of the
ocean I have come to know and love reminds me that as we look into new ways to protect our planet from climate
change, we need to look again at the natural machinery that already works, that developed over four and a half billion
years, and do everything we can to restore its functions.
Fossils suggest that one - third of the
oceans» large animals disappeared between 2 and 3 million
years ago, possibly due to
changing sea currents.
Changing temperatures and
ocean acidification, together with rising sea level and shifts in
ocean productivity, will keep marine ecosystems in a state of continuous
change for 100,000
years.
«We argue that it was the establishment of the modern deep
ocean circulation — the
ocean conveyor — about 2.7 million
years ago, and not a major
change in carbon dioxide concentration in the atmosphere that triggered an expansion of the ice sheets in the northern hemisphere,» says Stella Woodard, lead author and a post-doctoral researcher in the Department of Marine and Coastal Sciences.
These data therefore provides an invaluable archive of the natural state of the
ocean system and the expression of anthropogenic
change over the last 1000
years.
By studying the chemistry of growth rings in the shells of the quahog clam, an international team led by experts from Cardiff University and Bangor University have pieced together the history of the North Atlantic
Ocean over the past 1000
years and discovered how its role in driving the atmospheric climate has drastically
changed.
It then fluctuated around that level, reaching a high of 306,220 in 2012 before declining below the carrying capacity in the
years since as
ocean conditions
changed.
The chemistry in the growth rings in the shells of the clam — which occur much like the annual growth rings in the centre of trees — can act as a proxy for the chemical make - up of the
oceans, enabling researchers to reconstruct a history of how the
oceans have
changed over the past 1000
years with unprecedented dating precision.
That began to
change last
year with the discovery of DNA sequences for an organism that no one has ever actually seen living near a deep - sea vent on the
ocean floor.
Climate
changes that began ~ 17,700
years ago included a sudden poleward shift in westerly winds encircling Antarctica with corresponding
changes in sea ice extent,
ocean circulation, and ventilation of the deep
ocean.
OUR actions today will
change the world's
oceans for thousands of
years.
The new discoveries show that the formation 40 to 50 million
years ago of the «Pacific Ring of Fire,» an active seafloor zone along the perimeter of the Pacific
Ocean, caused dramatic changes in ocean depth and volcanic activity and buckled the seabed of Zealandia, according to Dic
Ocean, caused dramatic
changes in
ocean depth and volcanic activity and buckled the seabed of Zealandia, according to Dic
ocean depth and volcanic activity and buckled the seabed of Zealandia, according to Dickens.
By next
year, the Argo project will have installed 3,000 floating sensors across all the
oceans, offering a daily snapshot of global patterns of water temperature and salinity — crucial for predicting the nature and pace of climate
change.
Starting in the 3rd
year of his 5 -
year degree at the University of Vigo, Ourense, in Spain, Añel spent 4 hours a week in Luis Gimeno's Group of Atmospheric and
Ocean Physics at the university's Department of Applied Physics, computing climate
change quantifiers using simple parameters such as precipitation and air temperature.
Researchers do believe that climate
change contributes to more thawing of the
ocean floor permafrost in the Arctic because they have measured increases in seafloor temperatures in recent
years.
By comparing several
years of measurements, climate researchers and oceanographers can now draw conclusions about
changes in sea level and
ocean currents.
After studying population
changes in 154 species of fish worldwide over 60
years, Pinsky was surprised to see marine equivalents of rabbits and mice collapsing to low levels — still shy of extinction but serious enough to disrupt
ocean food chains or fishing - based societies.
He believes that no one has thought of combining the two theories before because it's not an intuitive idea to look at how the effects of
changing patterns of
ocean circulation, which occur on time scales of thousands of
years, would effect global silicate weathering, which in turn controls global climate on time scales of 100s of thousands of
years.
Humans do emit only a fraction of the 750 gigatons of CO2 that move through the atmosphere each
year, but small
changes in the total amount can overwhelm so - called carbon «sinks» such as the
ocean, resulting in important, and cumulative,
changes in the atmosphere.
Concentrations of algae in our
oceans and lakes have long bloomed naturally, but climate
change and fertilizer runoff from farms have exacerbated the situation in recent
years.
«Formation of coastal sea ice in North Pacific drives
ocean circulation, climate: New understanding of
changes in North Pacific
ocean circulation over the past 1.2 million
years could lead to better global climate models.»
The dramatic
changes in the Arctic
Ocean have often been in the news in the past two
years.