«If you look at the nutrient distributions in
the oceans on a global scale, you can see regional differences,» says Dr. Browning.
POGO is an international network of collaborators who foster partnerships that advance efficiency and effectiveness in studying and monitoring the world's
oceans on a global scale.
And whereas oceanographers once limited their perspectives to small regions of the ocean, they now understand the importance of viewing
the ocean on a global scale.
Not exact matches
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.
The findings reveal a crucial and underappreciated role that animals have in
ocean chemistry
on a
global scale.
New NOAA - led research maps the distribution of aragonite saturation state in both surface and subsurface waters of the
global ocean and provides further evidence that
ocean acidification is happening
on a
global scale.
The results of their study confirm that
oceans are good at balancing the nitrogen cycle
on a
global scale.
An unprecedented analysis of North Pacific
ocean circulation over the past 1.2 million years has found that sea ice formation in coastal regions is a key driver of deep
ocean circulation, influencing climate
on regional and
global scales.
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.
The working group
on coupled biogeochemical cycling and controlling factors dealt with questions regarding the role of plankton diversity, how
ocean biogeochemistry will respond to
global changes
on decadal to centennial time
scales, the key biogeochemical links between the
ocean, atmosphere, and climate, and the role of estuaries, shelves, and marginal seas in the capturing, transformation, and exchange of terrestrial and open - marine material.
Scientists at the School of
Ocean Sciences, Bangor University have completed a comprehensive review of the literature
on the mechanisms of potential coral resistance and recovery across
scales from
global reef areas to the microbial level within individual corals.
And what we see is both how complex climate changes can be and how profound an effect changing patterns of
ocean circulation can have
on global climate states, if looked at
on a geological time
scale.»
Where atmospheric CO2 works
on a rather abstract,
global scale,
ocean acidification works
on the local one as well, devastating or sometimes completely destroying local ecosystems.
To remove this difference in magnitude and focus instead
on the patterns of change, the authors
scaled the vertical profiles of
ocean temperature (area - weighted with respect to each vertical
ocean layer) with the
global surface air temperature trend of each period.
«By improving how we simulate the biological pump in the
ocean, we both improve the model and reveal this unexpected resilience, whereby
global -
scale changes to the physical properties of the
ocean have a smaller effect
on the biological pump.
On shorter time
scales, however, changes in heat storage (i.e.,
ocean heat uptake or release) can affect
global mean temperature.
Cooling of the tectonic plates, and the impact of the ridge flank system
on the chemistry of the
ocean, are fundamental
global -
scale processes.
Landmark
Global Scale Study Reveals Potential Future Impact of
Ocean Acidification
on Species» Distribution
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.
On the 500 Mio year time scale you have to consider continental shifts which have important impacts on climate (e.g. completely different global ocean circulation
On the 500 Mio year time
scale you have to consider continental shifts which have important impacts
on climate (e.g. completely different global ocean circulation
on climate (e.g. completely different
global ocean circulation).
Pay particular attention to the temperature
scale on the left hand side — 1 cm is equivalent to 0.2 degrees centigrade — and think about what we are trying to measure — the
global average temperature, all of it,
oceans, atmosphere and continents.
The new research is a regional climate study of historical sea level pressures, winds and temperatures over the eastern Pacific
Ocean and draws no conclusions about climate change
on a
global scale.
The much slower thermohaline circulation mixes cold abyssal water
on a time
scale of centuries — the
global ocean turnover time estimated from bottom current velocities is estimated to be
on the order of half a millennium
Ocean salinity changes, while unimportant for sea level at the
global scale, can have an effect
on regional sea level (e.g., Antonov et al., 2002; Ishii et al., 2006; Section 5.5.3).
Knowing where and when a given species is being taken from the
ocean allows for a much better assessment of fisheries management
on a
global scale.
But I would suppose that equilibrium climate sensitivity [background] and even
global mean surface temperature
on a decadal
scale could be better nailed down by model pruning and better
ocean data.
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.
37 Question 6 What impact do
oceans have
on the formation of weather systems
on a
global scale?
On decadal and longer time
scales,
global mean sea level change results from two major processes, mostly related to recent climate change, that alter the volume of water in the
global ocean: i) thermal expansion (Section 5.5.3), and ii) the exchange of water between
oceans and other reservoirs (glaciers and ice caps, ice sheets, other land water reservoirs - including through anthropogenic change in land hydrology, and the atmosphere; Section 5.5.5).
Changes in the
ocean can cause dramatic changes to climate and weather patterns
on a
global scale.
as we can we may be able to influence albedo
on an
ocean scale — and hopefully create a little bit of
global cooling.
It is thought that the poor representation of
ocean upwelling in current models has larger
scale impacts reducing the accuracy of model projections
on a
global scale.
«Routine measurements from space can provide quasi-synoptic, reproducible data for investigating processes
on global scales; they may also be the most efficient way to monitor the
ocean surface,» the researchers wrote.
[1] The SPCZ can affect the precipitation
on Polynesian islands in the southwest Pacific
Ocean, so it is important to understand how the SPCZ behaves with large -
scale,
global climate phenomenon, such as the ITCZ, El Niño — Southern Oscillation, and the Interdecadal Pacific oscillation (IPO), a portion of the Pacific decadal oscillation.
So there is the first bit of information: If you do not believe that the climate is warming
on a
global scale then in terms of evolution you are less knowledgeable about your environment (less intelligent) then the great majority of animals, plants, insects, and even
ocean dwelling single celled organisms like plankton.
It should also be noted that observations related to sub-surface
ocean circulation (oceanology), the prime source of internal variability, have only recently commenced
on a consistent
global scale.
The principal scientific objective is to make
global SSS measurements over the ice - free
oceans with 150 - km spatial resolution, and to achieve a measurement error less than 0.2 (PSS - 78 [practical salinity
scale of 1978]-RRB-
on a 30 - day time
scale, taking into account all sensors and geophysical random errors and biases.Salinity is indeed a key indicator of the strength of the hydrologic cycle because it tracks the differences created by varying evaporation and precipitation, runoff, and ice processes.
The demonstrated ability of GRACE to measure interannual OBP variability
on a
global scale is unprecedented and has important implications for assessing deep
ocean heat content and
ocean dynamics.
Compare with NCEP / NCAR: Same
global -
scale patterns — key thing to note is patterns of equator - pole & land -
ocean gradients, notably steep northern hemisphere winter western
ocean boundary / eastern continent gradients — same large -
scale annual cycle pattern
on both animations.
«Despite recent advances in the state of the
global ocean observing system, estimating oceanic variability
on basin - wide to
global scales remains difficult.
The interaction of
ocean circulation, which serves as a type of heat pump, and biological effects such as the concentration of carbon dioxide can result in
global climate changes
on a time
scale of decades.
But it doesn't seem as obvious when one thinks of it
on global scale - particularly if understand that tropics and tropical
ocean is Earth's heat engine.
Although a significant factor in
global climate
on the
scale of decades — the Pacific
Ocean modes are part of a
global climate system that is variable at many
scales in time and space.
Better understanding of the thermal processes and effects that OTEC operations has
on ocean temperatures and vice versa is important to predict energy yield potential
on both local (site - specific) and
global scales.
Humans have begun to alter the
global climate, as well as to bring fishing
on an industrial
scale to a once isolated
ocean.
Pollutants have altered
on a
global scale the carbon dioxide content of the air and the lead concentrations in
ocean waters and human populations.
«El Niño / Southern Oscillation (ENSO) is the most important coupled
ocean - atmosphere phenomenon to cause
global climate variability
on interannual time
scales.
On a
global scale, the
ocean warming is largest near the surface, and the upper 75 m warmed by 0.11 [0.09 to 0.13] °C per decade over the period 1971 — 2010.
I'm very convinced that the physical process of
global warming is continuing, which appears as a statistically significant increase of the
global surface and tropospheric temperature anomaly over a time
scale of about 20 years and longer and also as trends in other climate variables (e.g.,
global ocean heat content increase, Arctic and Antarctic ice decrease, mountain glacier decrease
on average and others), and I don't see any scientific evidence according to which this trend has been broken, recently.
On a
global scale, this warming trend implies that the
ocean has gained heat from the atmosphere over the last 50 to 70 years.