Sentences with phrase «term ocean trends»

This demonstrates how longer periods of observation, along with the complete ARGO network, are critical to derive more accurate long - term ocean trends.

Not exact matches

While natural patterns of certain atmospheric and ocean conditions are already known to influence Greenland melt, the study highlights the importance of a long - term warming trend to account for the unprecedented west Greenland melt rates in recent years.

Several studies linked this to changes in sea surface temperatures in the western Pacific and Indian Oceans, but it was not clear if this was part of a long - term trend.

The scientists, led by Eric Oliver of Dalhousie University in Canada, investigated long - term heat wave trends using a combination of satellite data collected since the 1980s and direct ocean temperature measurements collected throughout the 21st century to construct a nearly 100 - year record of marine heat wave frequency and duration around the world.

Although the impact of SAM events over the short term was an interesting finding, it was the long - term trend over multiple decades of observations that gave a crucial indication of the changes occurring in the Southern Ocean.

Although the seven - year data record is too short to make conclusions about long - term trends, it is an important step toward understanding how dust and other windborne particles, or aerosols, behave as they move across the ocean.

Given the obvious concerns for human ecological health — in terms of climate change, heavy metal toxification, indoor air quality, air pollution, plastics in the oceans, and things like that — there will be a large - scale trend to buildings that start to act like organisms.

Suomi NPP's job is to collect environmental observations of atmosphere, ocean and land for both NOAA's weather and oceanography operational missions and NASA's research mission to continue the long - term climate record to better understand Earth's climate and long - term trends.

So the report notes that the current «pause» in new global average temperature records since 1998 — a year that saw the second strongest El Nino on record and shattered warming records — does not reflect the long - term trend and may be explained by the oceans absorbing the majority of the extra heat trapped by greenhouse gases as well as the cooling contributions of volcanic eruptions.

Observations of upper ocean heat show some short term cooling but measurements to greater depths (down to 2000 metres) show a steady warming trend: However, the ocean cooling myth does seem to be widespread so I'll shortly update this page to clarify the issue.

However, if one downweights these two events (either by eliminating or, as in Cane et al» 97, using a «robust» trend), then an argument can be made for a long - term pattern which is in some respects more «La Nina» - like, i.e. little warming in the eastern and central equatorial Pacific, and far more warming in the western equatorial Pacific and Indian oceans, associated with a strengthening, not weakening, of the negative equatorial Pacific zonal SST gradient.

«The challenge is really first understanding what the natural variability looks like in this data - poor region, and then making measurements long enough that we can tease out the long - term ocean acidification trend, which is this gradual increase through time,» he said «It's really hard to see with just one or two years of data.»

(1) The warm sea surface temperatures are not just some short - term anomaly but are part of a long - term observed warming trend, in which ocean temperatures off the US east coast are warming faster than global average temperatures.

Mr. Trenberth was lamenting the inadequacy of observing systems to fully monitor warming trends in the deep ocean and other aspects of the short - term variations that always occur, together with the long - term human - induced warming trend.

The main point is that just as surface temperatures has experienced periods of short term cooling during long term global warming, similarly the ocean shows short term variability during a long term warming trend.

One year without a net loss also doesn't buck the long - term trend of Greenland losing ice, both from surface melt and from ocean waters eating away at glaciers that flow out to sea.

And while there are long term fluctuations in the Atlantic Ocean's temperature, there has been a distinct upward trend since 1970.

The authors found that only after November 2007 (when ARGO was 100 % complete) is the ARGO network sufficiently robust to give accurate short - term trends of what they term «global ocean indicators».

Given how much yelling takes place on the Internet, talk radio, and elsewhere over short - term cool and hot spells in relation to global warming, I wanted to find out whether anyone had generated a decent decades - long graph of global temperature trends accounting for, and erasing, the short - term up - and - down flickers from the cyclical shift in the tropical Pacific Ocean known as the El Niño — Southern Oscillation, or ENSO, cycle.

A very consistent understanding is thus emerging of the coupled ocean and atmosphere dynamics that have caused the recent decadal - scale departure from the longer - term global warming trend.

It's pretty much certain that the long term trend isn't explained all that much by ocean oscillations.

In general it's recognised that prediction of the so far unpredictable phenomena (El Nino's, La Nina's, the fine details of ocean circulation oscillations, volcanos and any solar variation outwith the 11 year solar cycle) that provide short term modulation of any trend is likley to be unfruitful at present.

In either case, we see no evidence of any long term warming trend, in either the atmosphere or the ocean.

However, if one downweights these two events (either by eliminating or, as in Cane et al» 97, using a «robust» trend), then an argument can be made for a long - term pattern which is in some respects more «La Nina» - like, i.e. little warming in the eastern and central equatorial Pacific, and far more warming in the western equatorial Pacific and Indian oceans, associated with a strengthening, not weakening, of the negative equatorial Pacific zonal SST gradient.

When I wrote «In either case, we see no evidence of any long term warming trend, in either the atmosphere or the ocean,» that should have read «long term warming trend due to CO2 emissions...» There may be some evidence consistent with long term warming in the oceans, but I can't see how that could be due to CO2, for reasons given above.

«Basically the interdecadal variability of ocean heat content observed previously (which has been the source of some debate and criticism) becomes smaller but the long - term trend does not change.

So, while the Boyce et al paper is certainly provocative, I would wait another several years to see what the long - term trends in chlorophyll are from satellite retrievals of ocean color.

While the short - term trends are complex, the long - term prognosis for the Arctic Ocean remains much more open water in summers later this century — for better and worse.

Still, the scientists, at the National Snow and Ice Data Center in Boulder, Colo., said that the extent of the ice in the Arctic this summer was 33 percent smaller than the average extent tracked since satellites started monitoring the region in 1979, and that the long - term trend is toward an ice - free summer in the Arctic Ocean within a few decades.

From what I see from the Global Historical Climatology Network (GHCN) of land temperatures and the Comprehensive Ocean - Atmosphere Data Set (COADS) of SST data, temperatures there were higher around the 1930's than now, and there is not much long term warming trend, except for the past few years.

The long - term observations suggest that the last decade has been a mere blip in a long - term trend towards fresher conditions in the northen oceans.

To clarify my above comment, I was suggesting that the observed rise in ocean heat content would be substantial with or without the La Nina effect, representing primarily the persistence of a long term warming trend.

«The short - term wiggles make it tough to detect trends in ocean warming, but the underlying trajectory appears unchanged, it seems.»

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, and does explain part of the variability about the long term rising trend.

Furthermore, this claim fails to note the long - term trend in ocean heat content, which is inexorably upward.

Apparently, in the last decade or so, surface and lower troposphere temperature has risen more slowly than the long term trend, but ocean heat content to 2 km has risen faster than the previous two decades.

But as cogently interpreted by the physicist and climate expert Dr. Joseph Romm of the liberal Center for American Progress, «Latif has NOT predicted a cooling trend — or a «decades - long deep freeze» — but rather a short - time span where human - caused warming might be partly offset by ocean cycles, staying at current record levels, but then followed by «accelerated» warming where you catch up to the long - term human - caused trend.

WMO will issue its full Statement on the State of the Climate in 2017 in March which will provide a comprehensive overview of temperature variability and trends, high - impact events, and long - term indicators of climate change such as increasing carbon dioxide concentrations, Arctic and Antarctic sea ice, sea level rise and ocean acidification.

The work in question takes measurements from one locale, and doesn't publish conclusions, rather Doney's statements are giving his opinion about what he read, «Long - term ocean acidification trends are clearly evident over the past several decades in open - ocean time - series and hydrographic survey data, and the trends are consistent with the growth rate of atmospheric carbon dioxide (Dore et al., 2009).»

Now if someone were to dsay, as Judith clearly did not although she had many opportunities to do so, that «concurrent with warming of our oceans there has been a relatively short - term hiatus in the trend of significant increase in global surface temperatures,» then I would not have a problem with the logic.

Long - term ocean acidification trends are clearly evident over the past several decades in open - ocean time - series and hydrographic survey data, and the trends are consistent with the growth rate of atmospheric carbon dioxide (Dore et al., 2009).

Refusing to acknowledge (and actually defending) the statistical malpractice of comparing an 8,000 - year long - term trend line to a 50 - year snapshot — a scam that Rosenthal et al. (2013, 2017) employed to claim that ocean temperatures (0 - 700 m) have changed more rapidly since the 1950s than at any time during the Holocene.

Over the long - term, melting of the West Antarctic Ice Sheet could yield as much as 10 to 14 feet of global average sea level rise, with local sea level rise varying considerably depending on land elevation trends, ocean currents and other factors.

Over the 5 long term, this warming conforms to a complex trend that can be simplified as a monotonic curve, but the actual pathway is steplike... this rules out gradual warming, either in situ in the atmosphere or as gradual release from the ocean, in favour of a more abrupt process of storage and release.

Thus, it would be appropriate to conclude from this that short - term fluctuations in the overall upward CO2 trend are moderately well correlated with temperatures in the lower troposphere over oceans.

Australia's unusual soils and topography prevented the majority of this precipitation from running off into the ocean, leading to a halt in the long - term trend of rising sea levels.

These models of course operate on the basis of the principle that responses in the ocean (70 percent of the Earth's surface) predominate in determining long term trends.

This trend has already restricted research cruises and will likely increasingly do so in the longer term, especially to remote areas of the ocean.

They are simply a first estimate.Where multiple analyses of the biases in other climatological variables have been produced, for example tropospheric temperatures and ocean heat content, the resulting spread in the estimates of key parameters such as the long - term trend has typically been signicantly larger than initial estimates of the uncertainty suggested.

However, even looking at the ocean data, we can see that the long term trend has * increased * since 1997 as with the global and land trend.