video search | Aspen Global Change Institute

Videos

These presentations represent talks given by scientists at past AGCI workshops and can be technical in nature.
To view presentations by workshop, please visit our AGCI Science Sessions page
To view video presentations intended for all audiences, try browsing our Public Lectures

20th Century Climate Change: How Can We Explain it?
Reveal Video with additional content
20th Century Climate Change: How Can We Explain it?
Date:
Wednesday, July 14, 2004
Presentation Materials
Click here to download the PDF file.

Details

Author/s:
V. Ramaswamy
Temperature observations during the 20th century reveal a warming trend unlike any other in many millennia. As one of the preeminent scientists looking for an explanation of this phenomena, Princeton University professor V. Ramaswamy provides an overview of existing climate models and explains in an accessible manner how various natural and anthropogenic variables potentially bring about climate change. Through his summary of available research, Ramaswamy argues that human-induced variables, particularly greenhouse gas emissions, appear to be primarily responsible for the warming trend of the 20th century.
×
July 14, 2004

Presented by V. Ramaswamy

IPCC, forcing, natural mechanisms, climate, change, global, warming, greenhouse, gas, aerosol, anthropogenic, volcanic dust, sun, ocean, atmosphere, public lecture, climate change
"Methane: The Other Greenhouse Gas"
Reveal Video with additional content
"Methane: The Other Greenhouse Gas"
Date:
Wednesday, August 16, 2000

Details

Author/s:
Elaine Matthews
Although carbon dioxide (CO2) has received the majority of attention related to global warming, methane (CH4) is also a powerful greenhouse gas and its impact on global warming over the last century is equal to about forty percent of the impact of carbon dioxide. In this lecture, Dr. Elaine Matthews, research scientist at NASA's Goddard Institute for Space Science, reveals that seventy percent of global methane emissions each year results from human activities such as rice irrigation, livestock raising, biomass burning, mining and processing of coal, and production and transmission of natural gas and oil. Matthews discusses methane's short lifetime and the implications of the reduction of its sources, which would make a significant impact on the course of global warming.
×
August 16, 2000

Presented by Elaine Matthews

methane, rice, irrigation, fossil fuels, global, warming, change, greenhouse, gas, public lecture, climate change, forcing, global warming
The Driving Forces of Global Change
Reveal Video with additional content
The Driving Forces of Global Change
Date:
Thursday, August 12, 1993

Details

Author/s:
Nay Htun
The twentieth century brought about sweeping environmental, economic, social, and political change. Each type of change was itself substantial, but collectively these changes collaborated to produce unprecedented impacts on the Earth and the human way of life. In this lecture, Nay Htun, Deputy Director of the United Nations Environmental Programme, addresses these changes and places them in the context of global environmental change. Dr. Htun describes the forces negatively affecting the global environment and talks about possible solutions to these impacts.
×
August 12, 1993

Presented by Nay Htun

United Nations, Environmental, Programme, global, change, force, politicaal, social, land-use, greenhouse, gas, public lecture, global warming, climate change
A Global Problem: A World of Research
Reveal Video with additional content
A Global Problem: A World of Research
Date:
Thursday, July 29, 1993

Details

Author/s:
Richard Rockwell
We are now in an unprecedented age where humans have become a force of global importance and where local human behavior has significant global impacts. In light of this new world order, Dr. Richard Rockwell of the University of Michigan addresses the issue of identifying and mitigating the negative impacts of human activity on the environment. These impacts, which Dr. Rockwell describes as large and growing, are and will continue to affect every individual, regardless of whether they directly contribute to the impacts or not.
×
July 29, 1993

Presented by Richard Rockwell

research, global, change, greenhouse, gas, world, community, problem, solve, uncertainty, climate, public lecture