Geneva, 30 January 2013 – Warming of the climate system is unequivocal, human influence on the climate system is clear, and limiting climate change will require substantial and sustained reductions of greenhouse gas emissions.
What does the IPCC say about climate change?
The United Nations formally endorsed the creation of the IPCC in 1988, citing the fact that “[c]ertain human activities could change global climate patterns, threatening present and future generations with potentially severe economic and social consequences”, and that “[c]ontinued growth in atmospheric concentrations …
What were the conclusions from the 2013 Intergovernmental Panel on climate Change?
By 2013, the panel had concluded that “It is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century.”
What are the 3 findings of the IPCC report?
“Robust findings” of the TAR include: Observed warming of the Earth’s surface, attribution of observed warming to human activities, projected increases in future global mean temperature, rising sea levels, and increased frequency of heat waves.
What is the important conclusion of the IPCC regarding climate change?
The IPCC Fourth Assessment Report concluded, with increased confidence over the Third Assessment, that some weather events, such as heat waves, storms and droughts, that can have large impacts, are likely to become more frequent and widespread in the future and, in some cases, more intense.
What have recent IPCC reports claimed about climate change quizlet?
What have recent IPCC reports claimed about climate change? A. The rate of climate change has slowed, and it is likely we have many more decades until significant changes are observed.
What did the report assessment of climate change highlight?
The latest global climate change assessments indicate a rise in worldwide average surface air temperatures by 5°C by the end of the century if human activities keep emitting GHGs at the current rate. The global average temperature in the last century has gone up by 1.1°C, according to the latest estimates by the IPCC.
How does location determine climate?
Introduction: Climate is determined by the temperature and precipitation characteristics of a region over time. The temperature characteristics of a region are influenced by natural factors such as latitude, elevation and the presence of ocean currents.
What do scientists think was the main driver of Earth’s past climate variations of glacial and interglacial periods quizlet?
What do scientists think was the main driver of Earth’s past climate variations of glacial and interglacial periods? Earth’s orbit around the sun. You just studied 11 terms!
What are the main anthropogenic gases?
Major greenhouse gases include carbon dioxide, methane, nitrous oxide, and various synthetic chemicals. … Natural sinks that remove carbon dioxide from the atmosphere (e.g., oceans, plants) help regulate carbon dioxide concentrations, but human activities can disturb these processes (e.g., deforestation) or enhance them.
What are climate scenarios Why are there multiple scenarios in the IPCC report?
Purpose. Because projections of climate change depend heavily upon future human activity, climate models are run against scenarios. There are 40 different scenarios, each making different assumptions for future greenhouse gas pollution, land-use and other driving forces.
What are the goals of the IPCC?
Created in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP), the objective of the IPCC is to provide governments at all levels with scientific information that they can use to develop climate policies.
Which of the following is the most significant threat posed by climate change?
The main threats of climate change, stemming from the rising temperature of Earth’s atmosphere include rising sea levels, ecosystem collapse and more frequent and severe weather. Rising temperatures from human-caused greenhouse gas emissions affects planet-wide systems in various ways.
What did IPCC report say?
The Intergovernmental Panel on Climate Change (IPCC), the United Nations’ climate science research group, concluded in a major report that it is “unequivocal” that humans have warmed the skies, waters, and lands, and that “widespread and rapid changes” have already occurred in every inhabited region across the globe.
What two conclusions has the IPCC?
What two conclusions has the IPCC made about global climate change? Global warming is occurring and human activities have contributed to global warming. Two ways in which precipitation patterns have changed.