全球气候变化【英文】

  1. 1、下载文档前请自行甄别文档内容的完整性,平台不提供额外的编辑、内容补充、找答案等附加服务。
  2. 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
  3. 3、如文档侵犯您的权益,请联系客服反馈,我们会尽快为您处理(人工客服工作时间:9:00-18:30)。
▪ Volcanoes ▪ Tectonic plate movement ▪ Changes in the sun
▪ Human activities – any activity that releases “greenhouse gases” into the atmosphere
What are greenhouse gases?
ห้องสมุดไป่ตู้
Global Climate Change
• Identifiable change in the climate of Earth as a whole that lasts for an extended period of time (decades or longer)
– When due to natural processes, it is usually referred to as global climate variability
• Warming of the climate is definitely occurring and can be observed by the:
– Increases in global sea and air temperatures – Widespread melting of snow and ice – Rising global sea level
Dr. Susan Solomon, a NOAA atmospheric chemist, an IPCC member and one author of IPCC summary
Intergovernmental Panel on Climate Change (IPCC)
What do they do?
How do they create their reports?
It’s a multi-step process…
IPCC – Words Used in Reports
When they discuss data:
Very high confidence to very low confidence that the data is accurate
Review current scientific and technical literature relevant to global climate change
Provide reports on their findings at regular intervals
Reports are designed to be politically neutral and of high scientific and technical standards
• So… how do we make sense of all this?
Intergovernmental Panel on Climate Change (IPCC)
Why was it created?
Created in 1988 by the United Nations Environmental Program
Temperature Change Data
Governments Members of the UN Participate by naming experts and reviewing the reports before they’re published
Scientists Close to 1000 scientists Climatologists, ecologists, atmospheric physicists, and others
Established to provide policymakers with an objective source of information about climate change
Intergovernmental Panel on Climate Change (IPCC)
Who is it?
– Usually refers to changes forced by human activities that change the atmosphere
What causes Earth’s climate to change?
▪ Changes in the atmosphere ▪ Natural processes
When they discuss the likelihood of something occurring:
Virtually certain to exceptionally unlikely
Observed Changes and Effects
Warming of Climate
Global Climate Change
▪ Created as part of National Science Foundation ITEST Grant #0833706.
▪ Any opinions, findings, and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.
Any gases that cause the “greenhouse effect!”
Imagine… a car on a cool but sunny day…
Research
• Almost 1000 studies dealing with different aspects of climate change have been conducted and published
相关文档
最新文档