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Climate Change 2007 Synthesis Report of the IPCC Fourth
Climate Change 2007 Synthesis Report of the IPCC Fourth

... specific groups such as the poor and elderly in not only developing but also developed countries. Moreover, there is increased evidence that low-latitude and less-developed areas generally face greater risk, for example in dry areas and mega-deltas. 4. Aggregate impacts. Compared to the [2001 IPCC a ...
Atmosphere, The Water Cycle, and Climate Change - SOEST
Atmosphere, The Water Cycle, and Climate Change - SOEST

... Observations of changes in ocean surface salinity also provide indirect evidence for changes in the global water cycle over the ocean (medium confidence). It is very likely that regions of high salinity, where evaporation dominates, have become more saline, while regions of low salinity, where preci ...
Summary of Oceans Issues from IPCC Fifth Assessment Report`s
Summary of Oceans Issues from IPCC Fifth Assessment Report`s

... recent changes. Finally, it considers future global and regional climate change for oceans. Oceans observations are generally consistent between this assessment report and the prior report but that more research and more accurate oceans measurements are considered in the later report. ...
Reason_IPCC_5AR_Ugandas Climate_Change and
Reason_IPCC_5AR_Ugandas Climate_Change and

... Light hatching denotes where more than 66% of models (or members) have the same sign with the ensemble mean changes, while dense hatching denotes where more than 90% of models (or members) have the same sign with the ensemble mean changes. ...
Diapositiva 1
Diapositiva 1

... ARCTIC Coburg Island and Pond Inlet, CA next picture ...
Global Temperature Update Through 2012
Global Temperature Update Through 2012

... provide evaporative cooling in the summer. The summer temperature anomaly was smaller than in the prior two seasons, but summer temperature variability is smaller than in the other seasons, so the 2012 summer anomaly was also unusually large as described in NOAA reports 6. ...
A. Global Warming Project - University of Wisconsin
A. Global Warming Project - University of Wisconsin

... “Global atmospheric concentrations of carbon dioxide, methane and nitrous oxide have increased markedly as a result of human activities since 1750 and now far exceed pre-industrial values determined from ice cores spanning many thousands of years.” ...
Global Temperature in 2016
Global Temperature in 2016

... it is likely that the 2017 global temperature will fall below that of 2016, as discussed below. Here we choose 1880-1920 as baseline, i.e., as the zero-point for temperature anomalies, because it is the earliest period with substantial global coverage of instrumental measurements and because it also ...
Be skeptical of Skeptic`s skepticism of skeptics
Be skeptical of Skeptic`s skepticism of skeptics

... The existence of a prolonged warm period so recently in the Earth’s climate history was making it impossible for the environmental extremists driving the climate scare to convince the world’s policymakers that today’s comparatively temperate temperatures were anything to worry about. The “hockey st ...
Medieval Warm Period - Natural Climate Change
Medieval Warm Period - Natural Climate Change

... explorations of the so-called Little Ice Age and Medieval Warm Period. Even in the first IPCC assessment (IPCC, 1990), many climatic variations prior to the instrumental record were not that well known or understood. Fifteen years later, understanding is much improved, more quantitative and better i ...
Changing US Extreme Temperature Statistics
Changing US Extreme Temperature Statistics

... The rise in global mean temperature is an incomplete description of warming. For many purposes, including agriculture and human life, temperature extremes may be more important than temperature means and changes in local extremes may be more important than mean global changes. We define a nonparamet ...
MSWord
MSWord

... to colonize a relatively ice-free Greenland. Yet this pattern was not a global change and may have only received attention because it occurred in the North Atlantic, an area familiar to most paleoclimatologists. Similarly, evidence of a Little Ice Age, from 1450 to 1850, can only be seen in observat ...
GEOL_553_proposal_yo..
GEOL_553_proposal_yo..

... that when large amounts of freshwater is added to the Atlantic Ocean, the thermohaline circulation changes. This change in the thermohaline circulation results in less heat being transferred from equatorial regions to the northern hemisphere, resulting in abrupt climate change and colder temperature ...
rising temps
rising temps

... Christine Todd Whitman, stated, “As it [epa] went through the review, there was less consensus on the science and conclusions on climate change. So, rather than go out with something half-baked, or not to put out the whole report, we felt it was important for us to get this out, because there is a l ...
Findings of the IPCC Third Ass - global change SysTem for Analysis
Findings of the IPCC Third Ass - global change SysTem for Analysis

... information relevant for the understanding of the risk of human-induced climate change. • It does not carry out research nor does it monitor climate related data or other relevant parameters. • IPCC reports are neutral with respect to policy, although they may need to deal objectively with scientifi ...
Global Warming: Man-Made or Natural?
Global Warming: Man-Made or Natural?

... The most fundamental question is scientific: Is Likewise, only about a dozen members of the observed warming of the past 30 years due to the governing board voted on the “consensus natural causes or are human activities a main or statement” on climate change by the American even a contributing fac ...
A Global Warming: Correcting the Data Surface temperatures are rising, but probably
A Global Warming: Correcting the Data Surface temperatures are rising, but probably

... described in the next paragraph) shows land-based warming of an average of 0.27°C (0.49°F) per decade, while overall global warming, because of the prevalence of ocean, is 0.17°C (0.31°F) per decade. Assuming 70 percent of the surface of the earth is ocean, this yields a surface atmospheric warming ...
Sedimentary Record Yields Several Centuries of Data
Sedimentary Record Yields Several Centuries of Data

... social and economic during a time when 1800's 1600's impacts. Third, as ...
Modelling the impact of climate change and weather related events
Modelling the impact of climate change and weather related events

... 8cm Hail? 8cm footprint for the April ...
There were times in the past when little permanent ice existed on
There were times in the past when little permanent ice existed on

... attribution of the term at regional scales is complicated by significant regional variations in temperature changes due to the influence of modes of climate variability such as the North Atlantic Oscillation and the El Nino/Southern Oscillation. Indeed, the utility of the term in describing past cli ...
Setting the Record Straight - Center for Science in the Earth System
Setting the Record Straight - Center for Science in the Earth System

... warming. After reviewing thousands of peer-reviewed scientific papers, some of which supported human-induced global warming and others that didn't, the IPCC concluded through its consensus peer-review process that the preponderance of evidence “unequivocally” supported the conclusion that the earth ...
Human Fingerprints - Union of Concerned Scientists
Human Fingerprints - Union of Concerned Scientists

... present, most of the warming was caused by heat-trapping emissions The observed temperature shift in the 40 years from human activities. In fact, since 1960 in the North Atlantic Ocean (red dots) heat-trapping emissions are drivis compared with two different models (natural drivers, top, vs. natur ...
The Ecosystem - washburnsciencelies
The Ecosystem - washburnsciencelies

... Includes natural and anthropogenic forces Not all the feedback mechanisms are fully understood Many of the processes are long term and the impacts of changes may not have occurred yet It also includes a lot of uncertainty which comes down to two questions: How much is the planet warming? Where will ...
Climate Scientists Agree on Warming, Disagree on
Climate Scientists Agree on Warming, Disagree on

... change as moderately dangerous. Seventy percent see climate change as very difficult to manage over the next 50 to 100 years, compared to only 5% who see it as not very difficult to manage. Another 23% see moderate difficulty in managing these changes. A need to know more Overall, only 5% describe t ...
Past, Present and Future Mean Temperatures for Earth`s
Past, Present and Future Mean Temperatures for Earth`s

... Although recent studies have indicated that the primary reason for global warming is due to the amount of emissions that human beings issue, there are other sources including natural events that contribute to this event year by year. One of these events is called ENSO [El Niño Southern Oscillation] ...
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North Report

The North Report was a 2006 report evaluating reconstructions of the temperature record of the past two millennia, providing an overview of the state of the science and the implications for understanding of global warming. It was produced by a National Research Council committee, chaired by Gerald North, at the request of Representative Sherwood Boehlert as chairman of the U.S. House of Representatives Committee on Science.These reconstructions had been dubbed ""hockey stick graphs"" after the 1999 reconstruction by Mann, Bradley and Hughes (MBH99), which used the methodology of their 1998 reconstruction covering 600 years (MBH98). A graph based on MBH99 was featured prominently in the 2001 IPCC Third Assessment Report (TAR), and became a focus of the global warming controversy over the 1997 Kyoto Protocol. It was disputed by various contrarians, and in the politicisation of this hockey stick controversy the New York Times of 14 February 2005 hailed a paper by businessman Stephen McIntyre and economist Ross McKitrick (MM05) as undermining the scientific consensus behind the Kyoto agreement. On 23 June 2005, Rep. Joe Barton, chairman of the House Committee on Energy and Commerce, with Ed Whitfield, Chairman of the Subcommittee on Oversight and Investigations, wrote joint letters referring to issues raised by the Wall Street Journal article, and demanding that Mann, Bradley and Hughes provide full records on their data and methods, finances and careers, information about grants provided to the institutions they had worked for, and the exact computer codes used to generate their results. Boehlert said this was a ""misguided and illegitimate investigation"" into something that should properly be under the jurisdiction of the Science Committee, and in November 2005 after Barton dismissed the offer of an independent investigation organised by the U.S. National Academy of Sciences, Boehlert requested the review, which became the North Report.The North Report went through a rigorous review process, and was published on 22 June 2006. It concluded ""with a high level of confidence that global mean surface temperature was higher during the last few decades of the 20th century than during any comparable period during the preceding four centuries"", justified by consistent evidence from a wide variety of geographically diverse proxies, but ""Less confidence can be placed in large-scale surface temperature reconstructions for the period from 900 to 1600"". It broadly agreed with the basic findings of the original MBH studies, which subsequently been supported by other reconstructions and proxy records, while emphasising uncertainties over earlier periods. The principal component analysis methodology that McIntyre and McKitrick had contested had a small tendency to bias results so was not recommended—but it had little influence on the final reconstructions, and other methods produced similar results.
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