Sentences with phrase «also on climate variability»

Kay added that «the fate of sea ice over the next decade depends not only on human activity but also on climate variability that can not be predicted.»

Even though the observed ice loss has accelerated over the last decade, the fate of sea ice over the next decade depends not only on human activity but also on climate variability that can not be predicted.

Not exact matches

«Regional changes are mostly due to natural variability but on top of that we see this pronounced overall weakening in summer storm activity,» says co-author Dim Coumou, «This is also something projected by climate models under future emission scenarios.

«A lot of the year - to - year variability is for all practical purposes random and unpredictable,» said Sobel, who also directs a new Columbia University Initiative on Extreme Weather and Climate.

So for this extended period in the evolution of life on this planet, we are only very recently plunging, arguably at an accelerating rate, into previously not experienced degrees of cooling and also probably into new extremes of rapid climate variability.

Then we also analyzed major climate forcings that act on the variability of heat waves.

The research is particularly relevant given the expectation that on top of an overall warming trend, variability in key parts of the climate system could also grow in the future.

So for this extended period in the evolution of life on this planet, we are only very recently plunging, arguably at an accelerating rate, into previously not experienced degrees of cooling and also probably into new extremes of rapid climate variability.

Based on the comparison between reconstructions and simulations, there is high confidence that not only external orbital, solar and volcanic forcing, but also internal variability, contributed substantially to the spatial pattern and timing of surface temperature changes between the Medieval Climate Anomaly and the Little Ice Age (1450 to 1850).

Also your inability to see that natural variability occurs on climate path based on the radiative forcing illustrates your basic misunderstanding of these realities.

The solutions, however, must also include a much better focus than present on climate change adaptation and reducing vulnerability to drought — a «no - regrets» strategy that will help both with natural variability, and the variability that could be made more challenging by human - caused climate change.

In principle, changes in climate on a wide range of timescales can also arise from variations within the climate system due to, for example, interactions between the oceans and the atmosphere; in this document, this is referred to as «internal climate variability».

She will also investigate the combined affects of natural variability and increased greenhouse forcings on changes in climate extremes throughout the 21st Century.

But their PNAS publication also referred to natural climate cycles, superimposed on the trend line, like ENSO and solar variability, both of which have been net contributors to global cooling over 1998 - 2008 [so climate skeptics can not — as they still do — point to either the Sun or El Niño to explain the world's temperature graph over that period of time].

It is also important to note that the models are not designed to project climate on a decadal basis, but on a centennial basis, where the effects of internal variability can more reasonably be expected to average out.

They also took account of natural factors such as volcanic eruptions and climate variability to gauge the impact of human activity on the amount of monsoon rainfall.

The influence of large - scale climate modes of variability (the Pacific Decadal Oscillation (PDO) and the El Niño - Southern Oscillation (ENSO)-RRB- on APF magnitude is also assessed, and placed in context with these more localized controls.

Although the NAO is the dominant pattern of atmospheric circulation variability, accounting for about half of the total winter SLP variance on both interannual and multi-decadal time scales, other large - scale structures of internal circulation variability will also undoubtedly contribute to uncertainty in future climate trends.

The fact that unforced variability in the climate system can offset anthropogenic forcing changes on a time scale of about 15 years and smaller does not logically imply that unforced variability is also the primary cause of the statistically significant temperature increase since the mid 1970ies.

«The authors write that North Pacific Decadal Variability (NPDV) «is a key component in predictability studies of both regional and global climate change,»... they emphasize that given the links between both the PDO and the NPGO with global climate, the accurate characterization and the degree of predictability of these two modes in coupled climate models is an important «open question in climate dynamics» that needs to be addressed... report that model - derived «temporal and spatial statistics of the North Pacific Ocean modes exhibit significant discrepancies from observations in their twentieth - century climate... conclude that «for implications on future climate change, the coupled climate models show no consensus on projected future changes in frequency of either the first or second leading pattern of North Pacific SST anomalies,» and they say that «the lack of a consensus in changes in either mode also affects confidence in projected changes in the overlying atmospheric circulation.»»

It is also defined by the United Nations Convention on Climate Change as «change of climate which is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and which is in addition to natural climate variability observed over comparable time periodsClimate Change as «change of climate which is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and which is in addition to natural climate variability observed over comparable time periodsclimate which is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and which is in addition to natural climate variability observed over comparable time periodsclimate variability observed over comparable time periods»

Russ R. - You did, I assume, also note the uncertainties on natural forcings and on internal climate variability?

As I will show later on virtually all climate variability is a result of internal system variability and additionally the system not only sets up a large amount of variability internally but also provides mechanisms to limit and then reduce that internal variability.

DelSole et al. (28) also found 2.5 cycles by extracting the spatial pattern in the Intergovernmental Panel on Climate Change, Fourth Assessment Report (IPCC AR4)(29) model control runs that best characterizes internal variability and by projecting the observed global data onto this pattern.

It is also responsible for the official reporting of observed climate variability and change in Australia and on collaboration with international agencies.

This assumption has been questioned on the basis of both observational and model - simulated data suggesting that tropical to extratropical climate variability can be decoupled (Rind et al., 2005), and also that extratropical teleconnections associated with ENSO may vary through time (see Section 6.5.6).

If verified, this effect would represent a dramatic advance not only in the basic understanding of the Sun's variable activity, but also in the potential influence of this variability on the Earth's climate.