Sentences with phrase «term temperature trend»

While the rate of global warming has slowed in the past several years, possibly due to natural climate variability, the long - term temperature trend clearly shows that we're living on a warming planet.

Dr. Latif is not making any predictions about what will happen after 2015 — other than that the long - term temperature warming trend driven by anthropogenic GHGs will continue and that the near - term temperature trend must catch up with the long - term trend, likely during a period of rapid warming.

Add please the Antarctic long term temperature trend (it has been negative for many years!)

On the other hand, the «pause» is being tested by analyzing whether the shorter - term temperature trend is a non-random deviation from the longer - term global warming trend, which itself, as we know, is statistically significant.

This effect will occur once and will not affect the long term temperature trend.

(It is my conclusion that the long term temperature trend is attributable to BOTH CO2 and the AMO.

By taking the derivative of temperature you are removing most of the increasing long term temperature trend and focusing mostly on the variation around that trend.

«The long - term temperature trend is far more important than the ranking of individual years, and that trend is an upward one, «said World Meteorological Organization secretary - general Petteri Taalas, in a statement.

Therefore, choosing 1998 as the starting year will result in minimizing the short - term temperature trend.

Given the temperature trend acceleration in more recent decades (albeit with substantial sub-decadal variability, seemingly associated with the 11 - year solar cycle), I would estimate the «current» long - term temperature trend to lie somewhere within 0.13 - 0.19 K / Decade.

The WMO secretary - general, Petteri Taalas, said the long - term temperature trend was far more important than the ranking of individual years: «That trend is an upward one.

Despite more than one hundred years with man - made carbon emissions, the long term temperature trend has increased by only 1 °C.

As the cities grow around the thermometers, the long - term temperature trend slowly rises.

the 1.5 to 2 m observations of minimum temperatures that are used as part of the analysis to assess climate system heat changes (e.g., such as used to construct Figure SPM - 3 of Intergovernmental Panel on Climate Change [2007] and of Parker [2004, 2006] study) lead to a greater long term temperature trend than would be found if higher heights within the surface boundary layer were used.

«The long - term temperature trend is far more important than the ranking of individual years, and that trend is an upward one, «said WMO Secretary - General Petteri Taalas.

Comparing the yearly and estimated temperature, gives us a long term temperature trend upward of about 0.3 deg.

Now if this cycle is repeating then everyone can be very relaxed about the long term temperature trend even if global temperatures dip definitively.

Filtering that «noise» makes long - term temperature trends visible, the authors said.

But in this case, it eliminates the very phenomenon which one is trying to determine — the effect of CO2 on long - term temperature trends.

And there are other nonhuman forces out there that are worth examining in the same way to help clarify what influences — human - caused or not — might be propelling short - term temperature trends in one direction or another.

But all of the kerfuffle over the Mail story and the endless discussions over short and long term temperature trends hides what people are actually arguing about — what is likely to happen in the future, rather than what has happened in the past.

This is pretty esoteric stuff, but it would actually be quite interesting if it were true — though we hasten to add that even if true it would have no significant bearing on the interpretation of long term temperature trends.

Thought the intent of models was to indicate long term temperature trends not long term «warming» trends.

The graph below shows the long - term temperature trends in relation to El Niño or La Niña events, which can skew temperatures warmer or colder in any one year.

Davey, C.A., and R.A. Pielke Sr., 2005: Microclimate exposures of surface - based weather stations — implications for the assessment of long - term temperature trends.

This means that they are not much use for studying long - term temperature trends.

Most of the stations that are being used for calculating the long - term temperature trends are urban!

In other words, it is one of our only rural station records that we can use for studying long - term temperature trends.

Most of the station records only have data in the 1950 - 1990 period, which as we discussed in Section 3, is not long enough to study long - term temperature trends.

««If that message gets out, then I think there would be less back and forth arguing about these short - term temperature trends because it doesn't really matter that much scientifically,» explained Patrick Brown, a doctoral student in climatology at Duke University's Nicholas School of the Environment.»

Regarding one other point you touched on, it's worth noting that climate models do poorly with ENSO and other chaotic variations, but well with long term temperature trends as a function of anthropogenic forcing.

As an example, using online monthly climate agency data I made this chart to help me understand how the long term temperature trends are affected by major volcanic eruptions and El Nino - La Nina events.

«warming in the pipeline» usually assumes constant concentrations, not zero emissions (though if CO2 emissions were dropped to zero tomorrow, and all other emissions were held constant, I'd probably expect a little bit of warming before it turned over and started dropping) 2) Don't forget aerosols: they are following the Level 1 scenario from Wigley et al. 2009, and may actually dominate short - term temperature trends.

As you can see, over periods of a few decades, modeled internal variability does not cause surface temperatures to change by more than 0.3 °C, and over longer periods, such as the entire 20th Century, its transient warming and cooling influences tend to average out, and internal variability does not cause long - term temperature trends.

But, unfortunately, most of these records were not meant for studying long term temperature trends, and so they are often affected by various non-climatic biases.

Therefore it is possible to get strong short term temperature trends which are not indicative of a long term trend, but of a shift from El Nino to La Nina or back.

Over the last 1000 years, we see that (again using a reversed scale of C14 as a proxy) solar activity is highly correlated with long term temperature trends (I have used the pre-Mann chart, because while it may over-emphasize the Medieval Warm Period, I still think such a period existed).

Other than a single datapoint (blue column), all the long - term temperature trends for the left chart exhibit warming greater than 1.5 degrees per century; in contrast, the majority of trends (blue columns) for the right chart are below 1.5 degree per century, despite faster CO2 growth and the associated higher atmospheric CO2 levels.

Just like the slow retreat of Alpine glaciers since 1850 has likely had something to do with warmer long - term temperature trends over Europe, since we have been emerging from a generally colder period, called the Little Ice Age.

... the following video clarifies how the interplay of natural and human factors have affected the short - term temperature trends, and demonstrates that underneath the short - term noise, the long - term human - caused global warming trend remains as strong as ever.

Growing concern over potential anthropogenic climate change was stimulating countless studies of long - term temperature trends.

To investigate whether CO2 - induced warming might be happening required a great deal of data — data that had not been collected with a view to investigating long - term temperature trends.

Well it probably is in the context of looking for long term temperature trends — so it's fair enough to remove the effect of that from the results with suitable filtering.

The study also stated that natural variability «can slow or speed the rate of warming from decade to decade,» and cited this as a reason not to be over-reliant on «short - term temperature trends.»

Each of these analyses show that the longer term temperature trends are indeed what is expected.

All terrestrial surface - temperature databases exhibit signs of urban heat pollution and post measurement adjustments that render them unreliable for determining accurate long - term temperature trends.

All terrestrial surface - temperature databases exhibit very serious problems that render them useless for determining accurate long - term temperature trends.

Anticipating that the influence of the aerosol forcing is strongest for longer term temperature trends in summer, application of the detection and attribution test to the latest observed 50 - y trend pattern of summer temperature yielded statistical consistency with the greenhouse gas - plus - aerosol simulation with respect to both the pattern and amplitude of the signal.

Not exact matches

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.