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Special Sessions at IGARSS 2002
An Earth Science Vision: Pathways to Implementation
[
Slide
presentation by Dr. Ghassem Asrar ]
NASA's Office of
Earth Science sponsored two sessions for the IGARSS 2002 meeting held in
Toronto, Canada during June 2002. The sessions were based on NASA’s Earth
Science Vision’s science goals over the next 20 years and on the new
technological capabilities needed to realize this vision. The
sessions highlighted the need for broad international and multi-agency
collaboration to enable these capabilities. |
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Background
Human activities and
the economies of large continental regions are highly sensitive to fluctuations
in climate and weather. In the United States alone, the average annual
weather-related damage exceeded $17 billion per year during the 1991-1995
period, with about 500 fatalities per year. Worse, much of the world is
considerably more sensitive than the United States to changes in climate,
weather, and to other natural hazards. The effects of changing climate and
weather are continuously increasing as worldwide populations grow and as the
human population moves closer to the coasts and other sources of water. The
Earth Science Vision transitions from the 5-10 year, near term planning for
observational upgrades including NPOESS and other observational systems, to
enhance the understanding of the Earth system by providing needed measurements
of Earth from space that and by enabling observations of changes in climate and
weather.
The Earth Sciences
Vision initiative foresees a transition from the observational paradigm of near
term future planning to the predictive paradigm of 20 years hence. The Earth
Sciences Vision of the future is that the Earth’s climate and all its
facets—climate, severe weather, the biosphere and ecosystems, Earth surface
processes—will be accurately understood, and climate changes and their effects
on human habitability of Earth will be foreseen. The science issues of the NASA
Earth Science Vision include long term climatic trends which, for example, can
occur over many years and can effect the availability of water; short term
climatic variability over seasons to a few years can result in changes in whole
ecosystems; and the resultant changes in the biosphere and whole ecosystems that
can then effects food supplies. Severe weather—tropical storms and outbreaks of
severe convective weather or winter storms—can product great destruction that
severely limits commerce. Solid Earth processes such as volcanism, earthquakes,
and changes in global ice and sea level can have profound effects on human
activities. The effects of these Earth processes all grow as the human
population increases.
With a broad range of
national and international partners NASA will enable the gathering, synthesis,
and distribution of this information rapidly to scientists, businesses,
governments, and the general public. This great increase in knowledge will
aid decision-makers in providing for fundamental improvements in social and
economic well being throughout the world. Achievement of this vision will enable
a richer relationship of people with our home planet. The NASA Earth
Science Vision for the 21st century and some of its supporting technologies will
be presented through two technical sessions described below.
Science Session
An Earth Science Vision: Science Pathways
and Predictive Capability
June 24, 2002
Warren Wiscombe, Chair; Gran Paules, Co-chair
This session introduces a vision of a future in
which the Earth's atmospheric system is understood, and long-term changes in climate can
be predicted. A series of invited papers highlight major scientific
challenges that lie on the path to understanding that will enable prediction of
far-term climate changes that affect our habitat. An overview presentation
will introduce the overall concept and will followed by science-topic papers
that provide focused implementation opportunities, and that highlight specific
science challenges. The session will close with commentary from a panel of
international space program leaders and managers.
Presentations:
- An Earth Science Vision for 2025: NASA's Perspective
- Predicting Long-tern Climate Change
- Biological Diversity: A Challenge in Ecological Forecasting
- Understanding Sea Level Changes
- Understanding and Responding to Earthquake Hazards
- Planning of the Integrated Global Strategy (IGOS) - An Ocean
Theme Example
Panel Discussion
Earth Science Vision of the Future:
A Perspective on International Cooperation
[
Video of the Panel Discussion
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Participating panelists:
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Dr. Ghassem Asrar |
NASA, Washington, D.C., U.S.A. |
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Mr. Surendra Parashar |
Canadian Space Agency, Canada |
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Dr. Yoji Furuhama |
NASDA, Japan |
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Technology
Session
An Earth Science Vision: Technology Pathways
and Challenges for 2025
June 25, 2002
Mariann Albjerg, Chair; Peter Hildebrand, Co-chair
This session focused on technical aspects of mid-term to
future systems and the need to gain scientific knowledge that sustains the
technology advancements needed for such systems. The session included examples of
how planned and future technological capabilities provide solutions needed to enable
the Earth Science vision. Also, session papers described new remote-sensing technologies
that will provide crucial measurements required by Earth Scientists to better
understand our planet and to accurately model the behavior of its atmospheric
and solid-Earth processes.
Presentations:
- A Web of Sensors: Enabling the Earth Science Vision
- The Afternoon Constellation: A Formation of Earth Observing
Systems for the Atmosphere and Hydrosphere
- GIFTS – The Precursor Geostationary Satellite Component of a
Future Earth Observing System
- Stratospheric Satellites for Earth Science Applications
- L1 and L2 Observatories in the Post-2010 Era
- Lightweight Deployable UV/Visible/IR Telescopes
- Needs for Intelligent Distributed Spacecraft
Infrastructure
- Needs for Communications and Onboard Processing in the Vision
Era
- Evolving Ground Systems Architecture Requirements for the
National Polar-orbiting Operational Environmental Satellite System (NPOESS)
- MODIS Direct Broadcast and Rapid Response Capabilities:
Getting Information to Operational Decisionmakers
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