Sentences with phrase «observed climate variability and change»

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

Mann was a Lead Author on the Observed Climate Variability and Change chapter of the Intergovernmental Panel on Climate Change (IPCC) Third Scientific Assessment Report in 2001 and organizing committee chair for the National Academy of Sciences Frontiers of Science in 2003.

The graph appears in the IPCC 2001 report's Summary for Policymakers, Technical Summary, and chapter 2 on Observed Climate Variability and Change.

Folland C.K., Karl T.R., Christy J.R., Clarke R.A., Gruza G.V., Jouzel J., Mann M.E., Oerlemans J., Salinger M.J. and Wang S.W. (2001) Observed Climate Variability and Change, in Climate Change 2001: The Scientific Basis, Houghton J.T. et al. (eds.)

Not exact matches

These predictions are limited by a poor understanding of the recent changes observed in the Antarctic and Greenland ice sheets, and a lack of knowledge about the variability of ice sheet behaviour under a warming climate.

«This is important for regional planning, because it allows policymakers to identify places where climate change dominates the observed sea level rise and places where the climate change signal is masked by shorter - term regional variability caused by natural ocean climate cycles.»

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.

This is seen in Johanessen et al 2009, «Arctic climate change: observed and modelled temperature and sea - ice variability.»

Johannessen OM, Bengtson L, Miles MW, Kuzmina SI, Semenov VA, Alekseev GV, Nagurnyi AP, Zakharov VF, Bobylev LP, Pettersson H, Hasselmann K, Cattle HP (2004) Arctic climate change: observed and modeled temperature and sea - ice variability.

It presents a significant reinterpretation of the region's recent climate change origins, showing that atmospheric conditions have changed substantially over the last century, that these changes are not likely related to historical anthropogenic and natural radiative forcing, and that dynamical mechanisms of interannual and multidecadal temperature variability can also apply to observed century - long trends.

Arctic climate change, observed and modeled temperature and sea ice variability, Tellus 56A.4: 328 - 341.

So, of course there are uncertainties in the findings, as in any attribution and detection result, there is a remaining chance that the observed change is due to internal climate variability (5 - ish %) particularly if the models would underestimate that variability.

The United Nations Framework Convention on Climate Change (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&Climate Change (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&rChange (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&climate change as: «a 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 periods&rchange as: «a 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 periods&rchange 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 periods&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 periods&climate variability observed over comparable time periods».

«a 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 considerable time periods.»

Variability in the marine carbon cycle has been observed in response to physical changes associated with the dominant modes of climate variability such as El Niño events and the PDO (Feely et al., 1999; Takahashi et al., 2006), and the NAO (Bates et al., 2002; Johnson and GruVariability in the marine carbon cycle has been observed in response to physical changes associated with the dominant modes of climate variability such as El Niño events and the PDO (Feely et al., 1999; Takahashi et al., 2006), and the NAO (Bates et al., 2002; Johnson and Gruvariability such as El Niño events and the PDO (Feely et al., 1999; Takahashi et al., 2006), and the NAO (Bates et al., 2002; Johnson and Gruber, 2007).

Attribution of the observed warming to anthropogenic forcing is easier at larger scales because averaging over larger regions reduces the natural variability more, making it easier to distinguish between changes expected from different external forcings, or between external forcing and climate variability.

It is therefore important to test the ability of climate models to simulate them (see Section TS.4, Box TS.7) and to consider the extent to which observed changes related to these patterns are linked to internal variability or to anthropogenic climate change.

Close agreement of observed temperature change with simulations for the most realistic climate forcing (scenario B) is accidental, given the large unforced variability in both model and real world.

They are used to investigate the processes responsible for maintaining the general circulation and its natural and forced variability (Chapter 8), to assess the role of various forcing factors in observed climate change (Chapter 9) and to provide projections of the response of the system to scenarios of future external forcing (Chapter 10).

Similarly, attribution of climate change to anthropogenic causes involves statistical analysis and the assessment of multiple lines of evidence to demonstrate, within a pre-specified margin of error, that the observed changes are (1) unlikely to be due entirely to natural internal climate variability; (2) consistent with estimated or modelled responses to the given combination of anthropogenic and natural forcing; and (3) not consistent with alternative, physically plausible explanations of recent climate change.

«Anthropogenic Climate change» means a quantified change of climate which isattributed directly or indirectly to human activity and distinguished from natural causes that alters the composition of the global atmosphere and which is in addition to natural climate trends and variability observed over comparable time pClimate change» means a quantified change of climate which isattributed directly or indirectly to human activity and distinguished from natural causes that alters the composition of the global atmosphere and which is in addition to natural climate trends and variability observed over comparable time pclimate which isattributed directly or indirectly to human activity and distinguished from natural causes that alters the composition of the global atmosphere and which is in addition to natural climate trends and variability observed over comparable time pclimate trends and variability observed over comparable time periods.

The overarching goal of this WCRP research effort, led by WCRP's Core Project «Climate and Ocean Variability, Predictability and Change» (CLIVAR) as a Research Focus, is to establish a quantitative understanding of the natural and anthropogenic mechanisms of regional to local sea level variability; to promote advances in observing systems required for an integrated sea level monitoring; and to foster the development of sea level predictions and projections that are of increasing benefit for coastal zone Variability, Predictability and Change» (CLIVAR) as a Research Focus, is to establish a quantitative understanding of the natural and anthropogenic mechanisms of regional to local sea level variability; to promote advances in observing systems required for an integrated sea level monitoring; and to foster the development of sea level predictions and projections that are of increasing benefit for coastal zone variability; to promote advances in observing systems required for an integrated sea level monitoring; and to foster the development of sea level predictions and projections that are of increasing benefit for coastal zone management.

This analytical report covers the first decade of the 21st century and aims at providing a decadal perspective of climate variability and change and its observed impacts on different sectors.

Brought to You by SEPP (www.SEPP.org) The Science and Environmental Policy Project ################################################### Quote of the Week: «a 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 considerable time periods.»

Climate change is defined by the Convention 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 periods» (article 1 (2Climate change is defined by the Convention 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 periods» (article 1 (2climate 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 periods» (article 1 (2climate variability observed over comparable time periods» (article 1 (2)-RRB-.

The platform will complement existing GMES / Copernicus pre-operational components, but will focus on datasets which provide information on climate variability on decadal to centennial time scales from observed and projected climate change impacts in Europe, and will provide a toolbox to generate, compare and rank key indicators.

Meanwhile, this brochure illustrates a qualitative fit between the facts observed about extreme events over the past decade, and the IPCC projections regarding the consequences of climate variability and change.

This synergistic relationship between anthropogenic climate change and natural climate variability is critical for consideration of observed warm season climate change in the US.

Even a perfect model can deviate significantly from past observed trends or changes, just because the physical system allows variability at decadal time scales; the climate and its trend that we're experiencing is just one of the many climates that we could have had.

IPCC has failed to refute the null hypothesis that currently observed changes in global climate indices and the physical environment are the result of natural variability.

It simply ignores the alternative and null hypothesis, amply supported by empirical research, that currently observed changes in global climate indices and the physical environment are the result of natural variability.

This approach provides a hybrid assessment of the combined influence of anthropogenic climate change [determined from the ensemble - mean of the CESM - LE or from the multi-model Coupled Model Intercomparison Project phase 5 (CMIP5) archive (Taylor et al. 2012)-RSB- and observed NAO variability on climate over the coming decades.

This usage differs from that in the United Nations Framework Convention on Climate Change (UNFCCC), which defines «climate change» as: «a 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 (UNFCCC), which defines «climate change» as: «a 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 periods&Change (UNFCCC), which defines «climate change» as: «a 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: «a 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 periods&change» as: «a 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 periods&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»

The advantage of recognising a reversed sign for the solar effect high up in the atmosphere is that it enables a scenario whereby the bottom up effects of ocean cycles and the top down effects of solar variability can be seen to be engaged in a complex ever changing dance with the primary climate response being changes in the tropospheric air circulation systems to give us the observed natural climate variability via cyclical latitudinal shifts in all the air circulation systems and notably the jet streams.

The impacts of climate change on freshwater systems and their management are mainly due to the observed and projected increases in temperature, sea level and precipitation variability (very high confidence).

The Framework Convention on Climate Change (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&Climate Change (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&rChange (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&climate change as: «a 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 periods&rchange as: «a 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 periods&rchange 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 periods&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 periods&climate variability observed over comparable time periods».

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 periods&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 periods&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»

To arrive at their lower climate sensitivity range than the IPCC, Lewis and Curry analysed the Earth's observed temperature change, ocean heat uptake and the level of human greenhouse gas emissions and natural variability.

«Climate sensitivity estimates are greatly impacted by such variability especially when the observed record is used to try to place limits on equilibrium climate sensitivity [Otto et al., 2013], and simply using the ORAS - 4 estimates of OHC changes in the 2000s instead of those used by Otto... changes their computed equilibrium climate sensitivity from 2.0 °C to 2.5 °C, for inClimate sensitivity estimates are greatly impacted by such variability especially when the observed record is used to try to place limits on equilibrium climate sensitivity [Otto et al., 2013], and simply using the ORAS - 4 estimates of OHC changes in the 2000s instead of those used by Otto... changes their computed equilibrium climate sensitivity from 2.0 °C to 2.5 °C, for inclimate sensitivity [Otto et al., 2013], and simply using the ORAS - 4 estimates of OHC changes in the 2000s instead of those used by Otto... changes their computed equilibrium climate sensitivity from 2.0 °C to 2.5 °C, for inclimate sensitivity from 2.0 °C to 2.5 °C, for instance.

Since natural climate variability and CO2 forcing are at work simultaneously it becomes difficult to assign specific percentages of any observed change in conditions to any single cause.

This usage differs from that in the United Nations Framework Convention on Climate Change, where climate change refers to a change of climate that is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and that is in addition to natural climate variability observed over comparable time periods.Climate Change, where climate change refers to a change of climate that is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and that is in addition to natural climate variability observed over comparable time periods.&Change, where climate change refers to a change of climate that is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and that is in addition to natural climate variability observed over comparable time periods.climate change refers to a change of climate that is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and that is in addition to natural climate variability observed over comparable time periods.&change refers to a change of climate that is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and that is in addition to natural climate variability observed over comparable time periods.&change of climate that is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and that is in addition to natural climate variability observed over comparable time periods.climate that is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and that is in addition to natural climate variability observed over comparable time periods.climate variability observed over comparable time periods.»

In view of what Leif Svalgaard says about the smallness of solar variations I'm coming round to the opinion that virtually all climate change that we observe is simply internal variability induced by the oceans and countered in the air all occurring around a relatively stable equilibrium set by sun and oceans.

«However, given that the climate system changes and feedback we are trying to observe are small compared to the internal variability of the climate system...» https://link.springer.com/article/10.1007/s40641-016-0047-5

Identifying the causes of observed changes in our climate requires an understanding of the natural variability of the climate system and of the response of the climate to external influences.

Natural factors in climate change — solar variability, Milankovic cycles, volcanism, El Nino, even cosmic rays — have been investigated very thoroughly, and none of the natural factors are capable of generating the observed disruptions in the global climate.

«The definition of climate change the United Nations Framework Convention on Climate Change (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&climate change the United Nations Framework Convention on Climate Change (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&rchange the United Nations Framework Convention on Climate Change (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&Climate Change (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&rChange (UNFCCC), in its Article 1, defines climate change as: «a 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 periods&climate change as: «a 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 periods&rchange as: «a 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 periods&rchange 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 periods&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 periods&climate variability observed over comparable time periods».

Detection and attribution of external influences on 20th - century and palaeoclimatic reconstructions, from both natural and anthropogenic sources (Figure 9.4 and Table 9.4), further strengthens the conclusion that the observed changes are very unusual relative to internal climate variability.

Finds that while the observed Pacific and interbasin - averaged salinity changes exceed the range of internal variability provided from control climate simulations, Atlantic changes are within the model estimates

«We show that anthropogenic forcing has had a detectable influence on observed changes in average precipitation within latitudinal bands, and that these changes can not be explained by internal climate variability or natural forcing.

Any change in net solar power output is relatively small as Leif says and being a seperate issue apparently incapable of explaining observed variability in the climate system.