Sentences with phrase «observed climate»

However, best estimates suggest the sun's variability over recent decades has played a small role in observed climate change](footnote 1).

However, it must be recognised that we are still unfortunately short of data for the quantitative assessment of extremes on the global scale in the observed climate.

You're right that a climate sensitivity of 3 degrees is not derived from first principles, but from various observed climate responses (volcanoes, LGM, etc) a value not too far removed from 3 is deemed most likely.

Many observed climate changes, like rising sea level, are occurring at the high end of the predicted changes.

A signature of persistent natural thermohaline circulation cycles in observed climate Knight et al..

We have observed climate really intensely for maybe 30 years, and with any kind of reliable measurements for no more than about a hundred years.

You have not shown what causes observed climate change.»

«No study to date has positively identified all or part [of observed climate change] to anthropogenic causes.»

Anomalies are defined relative to a specified climatology, the observed climate in a chosen base period.

Research on the impacts of these observed climate changes is assessed by Working Group II of the IPCC.

For the abrupt changes during the 1970s and 1990s they calculated predictions which began a few months prior to the beginning of the observed climate shifts.

«None of the models used by IPCC are initialized to the observed state and none of the climate states in the models correspond even remotely to the current observed climate.

The objective of this chapter is to assess scientific understanding about the extent to which the observed climate changes that are reported in Chapters 3 to 6 are expressions of natural internal climate variability and / or externally forced climate change.

Other quotes from your article: «He says that the increased solar brightness over the past 20 years has not been enough to cause the observed climate changes» «While the established view remains that the sun can not be responsible for all the climate changes we have seen in the past 50 years or so, this study is certainly significant,» «He added, however, that the study also showed that over the past 20 years the number of sunspots had remained roughly constant, while the Earth's temperature had continued to increase.»

It has served contrarians as «a favorite catch - all explanation for just about any observed climate trend.»

This documentary argues against conventional scientific understanding of the degree and cause of recent, observed climate change.

This section focuses on the relationship of runoff, lake levels, groundwater, floods and droughts, and water quality, with observed climate variability, climate trends, and land - use and land - cover changes reported since the TAR.

The average of all predictions for both abrupt changes shows good agreement with the observed climate development in the Pacific.

What this representation is trying to show is how modeled climate compares to observed climate over the 20th century, and how much change at any given moment is attributable to what factor.

Although we were motivated in this research by an objective to expose effects of human - made global warming as soon as possible, we use an empirical approach that does not require knowledge of the causes of observed climate change.

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

It is simply that after accounting as best one can for the influence of the sun you still can't match the observed climate over the past ~ 30 - 50 years without including the effects of additional greenhouse gas forcing.

Climate simulation models have proven to be unreliable when their predictions, scenarios, projections, etc. are compared to the observed climate realities.

(1) The mountain glacier model is driven by observed rather than modelled climate, so that two different climate histories go into producing the dashed black line: observed climate for glacier melt and modelled climate for ocean thermal expansion.

Observed climate data may often be of short duration and therefore yield a biased estimate of the noise.

In the composite effect (f), the greenhouse gas forcing dominates due to its predominance in observed climate change over the past century.

To estimate those parameters, Schwartz uses observed climate data.

This can be done by relying either on observed climate data or on model - simulated natural climate variability (Hulme et al., 1999a; Carter et al., 2000b).

I say this seems at odds with your statement «The observed climate is just the equilibrium response to such variations with the positions of the air circulation systems and the speed of the hydrological cycle always adjusting to bring energy differentials above and below the troposphere back towards equilibrium (Wilde's Law?).»

The 2013 - 2014 California drought is clearly an extreme meteorological event in the context of observed climate of the 20th and early 21st centuries.

At present it potentially explains a great deal, covers most if not all observed climate changes and broadly complies with the laws of physics subject to resolution of the issues raised about the solar effects on the atmosphere and infra red effects on the oceans.

«The evidence in my paper is consistent with the hypothesis that the Sun causes climatic change in the Arctic -LSB-...] It invalidates the hypothesis that CO2 is a major cause of observed climate change — and raises serious questions about the wisdom of imposing cap - and - trade or other policies that would cripple energy production and economic activity, in the name of «preventing catastrophic climate change».»

On the contrary, the proposed harmonic model (which herein uses cycles with 9.1, 10 — 10.5, 20 — 21, 60 — 62 year periods) is found to well reconstruct the observed climate oscillations from 1850 to 2011, and it is shown to be able to forecast the climate oscillations from 1950 to 2011 using the data covering the period 1850 — 1950, and vice versa.

To achieve the observed climate consequences a mere redistribution of energy in the system both vertically and horizontally is all we need and indeed that is exactly what we do see with the current warm anomalies at poles and in the tropics with cold anomalies in mid latitudes.

Discrepancies between the data sets and the models have been reduced and our understanding of observed climate changes and their causes has increased.

At the moment I am not aware of any observed climate phenomena that would effect falsification.

For the «2013 as observed» experiment, the atmospheric model uses observed sea surface temperature data from December 2012 to November 2013 from the Operational Sea Surface Temperature and Sea Ice Analysis (OSTIA) dataset (Stark et al. 2007; Donlon et al. 2012) and present day atmospheric gas concentrations to simulate weather events that are possible given the observed climate conditions.

The observed climate is just the equilibrium response to such variations with the positions of the air circulation systems and the speed of the hydrological cycle always adjusting to bring energy differentials above and below the troposphere back towards equilibrium (Wilde's Law?).

You have to compare what nature would have done and the observed climate in order to see how man has altered it.

But if you've observed the climate wars in the past, and in particular Judith's participation in the past, it should be obvious that as I said, she is quite able to respond and to be absolutely convinced that she's right.

Closely related work focuses on the attribution of observed climate change to various forcing agents, both anthropogenic and natural.

You can't subtract an estimated man - made component from observed climate in order to estimate nature's contribution.

In addition to publishing original papers on topics like climate change and mercury in the environment, SPPI has profiled the states for observed climate change and the impact or cost of climate change regulations or prevention measures.

Nevertheless, the most recent observational and model evidence has increased confidence in our understanding of observed climate changes and their causes.

Comparison between current observed climate and the climate record reveals nothing that calls for the development of an Anthropogenic Climate Change theory.

All of these tools reveal disruptions and change due to observed climate changes.

Working Group 2, Chapter 10 Batima, P., L. Natsagdorj, P. Gombluudev and B. Erdenetsetseg, 2005a: Observed climate change in Mongolia.

For example, one possible criterion for judging model suitability is its skill at reproducing present - day observed climate (see section 2 of the accompanying report).

Quite clearly, the observed climate is the result of responses to all climate forcings, both natural and human - induced.

But there is very little research specifically on near term dec - cen variability, especially in relation to observed climate change over the last century or so.