Sentences with phrase «of global temperature change»

I was open minded as to the cause of global temperature changes when I started my participation in the blogosphere several years ago.

Something was clearly different about the nature of global temperature change since 1997 than it had been in the previous two decades.

In recent decades, a number of groups have tried combining sets of these proxy records together to construct long - term estimates of global temperature change over the last millennium or so.

In my last article I was primarily discussing a dependency that the rate of CO2 levels in the atmosphere has on the rate of global temperature change.

Does all of the above indicate that human emissions have zero influence of global temperature changes?

While a student at the University of Minnesota was creating a cello composition around the last 130 years of global temperature change, a couple of researchers at Lawrence Livermore National Laboratory were producing a similar composition, for digital violin and with a much longer score — charting more than 600 years of climate variations and recent warming:

John Tierney and Roger Pielke Jr. have recently discussed attempts to validate (or falsify) IPCC projections of global temperature change over the period 2000 - 2007.

These facts were enough for an NAS panel, including Christy, to publish a report Reconciling Observations of Global Temperature Change which concluded that «Despite differences in temperature data, strong evidence exists to show that the warming of the Earth's surface is undoubtedly real, and surface temperatures in the past two decades have risen at a rate substantially greater than average for the past 100 years»

'' «We know from past changes that ecosystems have responded to a few degrees of global temperature change over thousands of years,» said Diffenbaugh.

Executive Summary The Berkeley Earth Surface Temperature project was created to make the best possible estimate of global temperature change using as complete a record of measurements as possible and by applying novel methods for the estimation and elimination of systematic biases.

Since the 19th century, sea level has shot up more than 2 millimeters per year on average, far faster than other periods of global temperature change.

In terms of global temperature change there are also several timescales of consideration - there is a fast component (roughly proportional to the instantaneous radiative forcing), and a slow omponent that reflects surface manifestation of changes in the deep ocean.

In our year - 2000 published analysis of these data through 1997 (Causes of Global Temperature Changes During the 19th and 20th Centuries, Geophysical Research Letters, 27:14, 2137 - 2140; Natalia Andronova & Michael Schlesinger), we showed that this warming was predominantly due to people.

I was aware of Milankovitch cycles and their role in driving ice ages and so I was somewhat confused by Al Gore's implicit attribution of global temperature changes to CO2 in An Inconvenient Truth.

While we don't know precisely why the CO2 changes occur on long timescales, (the mechanisms are well understood; the details are not), we do know that explaining the magnitude of global temperature change requires including CO2.

Possible implications of these findings for the range of global temperature change and other climate responses are summarised in Section 10.2.1.5.

While the work of Michael Mann and colleagues presents what appears to be compelling evidence of global temperature change, the criticisms of McIntyre and McKitrick, as well as those of other authors mentioned are indeed valid.

Earlier climate change studies used this linear approximation to evaluate the sensitivity of the global temperature change caused by external forcing.

The chart on the right (for periods ending Sept. 2014) reveals a deceleration of global temperature change that over the «last 10 years» reached a very slight global cooling status; yet, as can be seen, the CO2 growth trend was accelerating, reaching a rate robustly greater than those periods ending in 1999.

Most of the global temperature change that took place from 50Myr ago to 30 Myr ago was an extreme temperature change that took place locally in Antarctica.

Figure 3 compares the GISS analysis of global temperature change with the case in which the polar regions, specifically regions poleward of 64 degrees latitude, are excluded from the analysis.

They report that variations in the water vapor content in the lower stratosphere (apparently largely unrelated to GHG changes) have a large influence on the rate of global temperature change for periods of a decade or more.

: Cold facts about the hot topic of global temperature change after the Climategate scandal» (PDF) regarding the Climatic Research Unit email controversy.

But until the scientists worked out that the sum of emissions over time (the «carbon budget») was to a first order the best predictor of global temperature change, they were generally dismissed as naive and ideological.

Thus, the 20th century portion of our paleotemperature stack is not statistically robust, can not be considered representative of global temperature changes, and therefore is not the basis of any of our conclusions.

Re «Estimates of the drivers of global temperature change in the ice ages show that the changes in greenhouse gases (CO2, methane and nitrous oxide) made up about a third of the effect, amplifying the ice sheet changes by about 50 % (Köhler et al, 2010).»

You characterized the effort as «attempts to validate (or falsify) IPCC projections of global temperature change over the period 2000 - 2007.»

Reconciling Observations of Global Temperature Change.