It is the net impact of multiple ocean surface temperature changes, rather than a single
ocean basin change, that plays a main driver for the multi-decadal global warming accelerations and slowdowns.
«Here we're seeing
an ocean basin changing on a generational timescale — or less,» he adds.
Not exact matches
«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.
«Numerous
changes in climate have been observed at the scales of continents or
ocean basins.
One of the subtle
changes visible in the new data - set is how the Amazon's greenness corresponds to one of the long - known causes of rainfall or drought to the Amazon
basin:
changes in sea surface temperatures in the eastern Pacific
Ocean, called the El Nino Southern Oscillation.
While there are regional differences in the poleward movement of cyclones, the fact that every
ocean basin other than the northern Indian Ocean has experienced this change leads the researchers to suggest, in the paper, that this «migration away from the tropics is a global phenomenon.&r
ocean basin other than the northern Indian
Ocean has experienced this change leads the researchers to suggest, in the paper, that this «migration away from the tropics is a global phenomenon.&r
Ocean has experienced this
change leads the researchers to suggest, in the paper, that this «migration away from the tropics is a global phenomenon.»
The study shows that
changes in heat distribution between the
ocean basins is important for understanding future climate
change.
For scientific purposes, the Antarctic ice sheet is often divided into catchment
basins so that comparative measurements can be taken to work out how the ice in each
basin is
changing and discharging ice to the
oceans.
This one been thelongest of the three as hot
ocean temperatures fueled by El Niño and climate
change have caused reefs to suffer across every
ocean basin.
The research team found that deoxygenation caused by climate
change could already be detected in the southern Indian
Ocean and parts of the eastern tropical Pacific and Atlantic
basins.
Other
ocean basins have also seen
changes to their seasons.
Examination of the geographical distribution of the differences in 0 to 700 m heat content between the 1977 — 1981 and 1965 — 1969 pentads and the 1986 — 1990 and 1977 — 1981 pentads shows that the pattern of heat content
change has spatial scales of entire
ocean basins and is also found in similar analyses by Ishii et al. (2006).
We review data on the absorption of anthropogenic CO2 by Northern Hemisphere marginal seas (Arctic
Ocean, Mediterranean Sea, Sea of Okhotsk, and East / Japan Sea) and its transport to adjacent major
basins, and consider the susceptibility to recent climatic
change of key factors that influence CO2 uptake by these marginal seas.
Observed
changes in
ocean heat content have now been shown to be inconsistent with simulated natural climate variability, but consistent with a combination of natural and anthropogenic influences both on a global scale, and in individual
ocean basins.
Changes in sea floor spreading rates effect the volume of the mid-oceanic ridges which may contribute to changes in the volume of the ocean
Changes in sea floor spreading rates effect the volume of the mid-oceanic ridges which may contribute to
changes in the volume of the ocean
changes in the volume of the
ocean basins.
Can we consider the
ocean basin volume as static for the purpose of sea level
change prediction because the speed of water inputs will far outstrip the speed of mantle movements?
Sea level
change based on satellite altimetry is measured with respect to the Earth's centre of mass, and thus is not distorted by land motions, except for a small component due to large - scale deformation of
ocean basins from GIA.
The reason for a lack of short term correlation is probably that, absent a volcanic eruption, the Atlantic is warmer during an El Nino BUT the wind shear is greater, thus destroying, on such occasions, the agreement you would normally get with multidecadal
changes in SST in the Atlantic RELATIVE to other
ocean basins.
• What are some other impacts of climatic variability during the MCA / MWP regarding such topics as
changes in
ocean basin tropical cyclone activity?
We do know that
ocean basins produce this oscillatory behavior — the El Nino / Southern Oscillation, the Arctic Oscillation, the Pacific Decadal Oscialltion, the NAO, the Madden - Julian Oscillation (Indian Ocean), but they seem to have a bit of a random component, their forcing mechanisms are poorly understood, their «phase changes» appear impossible to predict very far in advance, and they must also be sensitive to the overall climate war
ocean basins produce this oscillatory behavior — the El Nino / Southern Oscillation, the Arctic Oscillation, the Pacific Decadal Oscialltion, the NAO, the Madden - Julian Oscillation (Indian
Ocean), but they seem to have a bit of a random component, their forcing mechanisms are poorly understood, their «phase changes» appear impossible to predict very far in advance, and they must also be sensitive to the overall climate war
Ocean), but they seem to have a bit of a random component, their forcing mechanisms are poorly understood, their «phase
changes» appear impossible to predict very far in advance, and they must also be sensitive to the overall climate warming.
SLR satellite data includes things such as the «GIA Adjustment» — which is the amount of SLR that there would have been if the
ocean basin hadn't increased in volume and in the case of this new study, how much higher the sea surface would have been if it had not been suppressed by the Mount Pinatubo volcanic eruption, another correction for ENSO / PDO «computed via a joint cyclostationary empirical orthogonal function (CSEOF) analysis of altimeter GMSL, GRACE land water storage, and Argo - based thermosteric sea level from 2005 to present», as well as other additions and adjustments — NONE OF WHICH can actually be found manifested in any
change to the physical Sea Surface Height.»
In fact, I have already attempted that and my New Climate Model not only incorporates that «stadium» wave» as it works through the
ocean basins but also places it within an overall climate
change description.
In addition to the ever -
changing shape and depth of the
ocean basins and coastal zone boundaries, one must also bear in mind the «leaky Earth»: There appears to be a continuous exchange of water between the
ocean bottom and the Earth's crust, as Professor Shige Maruyama of Tokyo Institute of Technology has shown.
Sea level
change - Sea level can
change, both globally and locally, due to (i)
changes in the shape of the
ocean basins, (ii)
changes in the total mass of water and (iii)
changes in water density.
Eustatic
change (as opposed to local
change) results in an alteration to the global sea levels due to
changes in either the volume of water in the world's
oceans or net
changes in the volume of the
ocean basins.
cooling in the North Atlantic
basin due to
changes in
ocean currents.
The observed
changes in salinity are of global scale, with similar patterns in different
ocean basins (Figure 5.6).
The adjacent charts (courtesy of
ocean expert Bob Tisdale) plot the temperature
changes for each major
ocean basin since late 1981.
The finding stems from more than a decade of effort to virtually reconstruct ancient
ocean basins to understand how their size and depth have
changed since the Cretaceous, which lasted from 145.5 to 65.5 million years ago.
This
basin - wide
change in the Atlantic climate (both warming and cooling) induces a
basin - scale sea surface temperature seesaw with the Pacific
Ocean, which in turn modifies the position of the Walker circulation (the language by which the tropical
basins communicate) and the strength of the Pacific trade winds.
I don't take exception with what you're saying about warming, etc, but that limits the dynamics that could be at play, including
changes in the
ocean basins, tectonics, etc..
Having said that, similar
changes in tropical cyclone detection also seem to have occurred for each of the other
basins, e.g., Hoarau et al., 2012 (Abstract) suggest that incomplete satellite coverage during the 1980s and early 1990s led to an underestimation of cyclone intensity in the northern Indian
Ocean basin.
The fact that this 3 % error is robust among the different
ocean basins provides evidence for
changes in the instrumentation, such as
changes in the terminal velocity of the XBTs.
States that a significant increase in salinity has been observed in recent decades in the 20N — 50N latitude band of the Atlantic
ocean, although
changes at sub ‐ polar latitudes of the Atlantic, and in other
ocean basins, are not found to be significant compared to modeled internal variability
The
change in shape of
ocean basins causes a
change in a property known as resonance.
In the new study, scientists simulated the movement of Earth's tectonic plates and
changes in the resonance of
ocean basins over millions of years.
sea level
changes vary enormously according to the
ocean basin and geography.
The former redistributes
ocean volume within the
basins, while the latter alters Earth's gravitational field and rate of rotation enough to
change the distribution of
ocean mass around the surface of the Earth.
Then you can explain how a regional SST
change can cause OHC to rise simultaneously in all major
ocean basins for four decades (and counting).
A recent comprehensive review [7] reveals that there are still wide uncertainties about the Earth's sea - level history that are especially large for time scales of tens of millions of years or longer, which is long enough for substantial
changes in the shape and volume of
ocean basins.
b) volumetric effects —
change in the volume of water contained in the
oceans and the geometry and areal extent of the
ocean basins c) gravitational effects —
change in the gravitational attraction of the earth (induced by deformation), by the
change in distribution of ice and by the
change in self - attraction of the water d) rotational effects —
change in the moment of inertia caused by a
change in the distribution of mass within the earth and on its surface.
The TAR noted that evidence for
changes in tropical cyclones (both in number and in intensity) across the various
ocean basins is often hampered by classification
changes.
«Third, in a period when
ocean basins were similar to modern, ice age climate sensitivity to pCO2
changes is underestimated by climate models even when long term
changes in solar forcing and ice sheet size and distribution are taken into account, implying that internal positive feedbacks are stronger than previously thought.»
They identified regional differences, but found that every
ocean basin except the northern Indian Ocean had experienced such a ch
ocean basin except the northern Indian
Ocean had experienced such a ch
Ocean had experienced such a
change.
Geologists are able to identify sea level
changes that occurred world wide in all the open
ocean basins and they use these to correlate and identify the ages of the sediments from
basin to
basin.
Using global climate model simulations that replicated the
ocean basins and landmasses of this period, it appears that
changes in
ocean circulation due to warming played a key role.
So while one might speculate that some of the
changes in tropical Atlantic hurricane statistics could be related to cyclic
changes in climate (i.e., the AMO), it is very difficult to argue this for hurricane statistics in other
ocean basins, let alone global average hurricane statistics.
Consensuses and discrepancies of
basin - scale
ocean heat content
changes in different
ocean analyses
These experiments provide new insight into mechanisms of past climate
changes on Earth, which have been driven in part by tectonic
changes in
ocean basins and consequent
changes in
ocean circulation and heat transport.
And I DO know that ANYTHING that
changes the volume of the
ocean OR the volume of the
ocean basins by 36O km ^ 3 will result in a
change in sea level by 1 mm.