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Goddard Space Flight Center is a bustling community of top
scientists, engineers, and administrative managers. This NASA
center was established in January 1959, named after American
rocket pioneer, Robert Goddard, who engineered and launched the
world's first liquid-fueled rocket.
As NASA's first major scientific laboratory devoted entirely
to the exploration of space, Goddard's mission is in space science,
earth science, and technology. Situated in Greenbelt, Maryland,
Goddard has the largest scientific staff of all the NASA centers.
The center also implements suborbital programs using sounding
rockets, balloons, and aircraft from the Wallops Flight Facility
on Wallops Island, Virginia.
Theoretical research of the center is carried out at the Goddard
Institute for Space Studies. Located in New York City, the institute
operates in close association with area universities, and delves
into geophysics, astronomy, and meteorology.
Goddard is providing lead support for NASA's Earth Science
Enterprise. This endeavor addresses the fundamental question:
How can we utilize the knowledge of the Sun, Earth, and other
planetary bodies to develop predictive environmental, climate,
natural disaster, and natural resource models to help ensure
sustainable development, and improve the quality of life on Earth?
To answer this question, a series of satellite launchings
have been orchestrated to combine atmospheric, oceanic, and land
surface observations into a global environmental study focusing
on climate change. Integrated measurements of the Earth's processes
from these spacecraft will generate an environmental database
focusing on climate change. This unprecedented observational
ability can expand our perspective of the global environment
to the benefit of everyone.
In August 1997, the Sea-viewing Wide Field-of-view Sensor
(SeaWiFS) was launched on the OrbView-2 satellite. This Goddard-managed
payload is monitoring global chlorophyll A in the oceans once
every two days. SeaWiFS is producing data at a rate unequaled
in the history of oceanographic remote sensing, providing scientists
with a nearly comprehensive global view of the oceans.
Another part of the quest to study the Earth is measuring
rainfall. Rainfall is perhaps the most important factor in defining
climate. Excess rainfall can cause flooding and enormous property
and crop damage. On the other hand, a lack of rainfall means
droughts and crop failure. Rainfall is also a major source of
energy that drives the circulation of the atmosphere. Surprisingly,
tropical rainfall comprises more than two-thirds of global rainfall.
The Tropical Rainfall Measuring Mission (TRMM), an observatory
built by Goddard, was launched into orbit in November 1997. TRMM
is a jointly-sponsored project by NASA and the National Space
Development Agency (NASDA) of Japan. TRMM is the first mission
dedicated to measuring tropical and subtropical rainfall through
microwave and visible infrared sensors, and includes the first
spaceborne rain radar. TRMM's complement of state-of-the-art
instruments will provide more accurate assessments. These new
measurements will increase our knowledge of how rainfall releases
heat energy to drive atmospheric circulation. Multi-year science
data sets yielded by TRMM will be vastly more informative than
any now available.
Additional satellites built for studying the Earth are soon
to follow. Slated for launch in 1998, the AM-1 spacecraft is
to characterize clouds, aerosol, and the Earth's radiation balance.
AM-1 is to cross the equator in the morning hours. The Landsat
7 is set for a 1998 liftoff as well. It will study land surface
features and changes using high-resolution imagery. A PM-1 spacecraft
is targeted for launching in 2000, geared to study clouds, precipitation
and radiative balance. It will cross the equator in the afternoon
hours. Still other spacecraft are to be lofted in 2002, 2004,
and 2006, each dedicated to studying environmental changes on
Earth, both natural and human-induced.
Space-based observing of the Earth is generating a "rain
of data"torrents of information that must be accessed quickly
and easily by the scientific research community. Goddard serves
as one of several Earth science data centers called a Distributed
Active Archive Center, or DAAC for short. The Goddard DAAC's
mission is to maximize the investment benefit of the Mission
to Planet Earth activities by providing data and services that
can help people fully realize the scientific and educational
potential of global climate data.
Is the Earth in trouble? Goddard scientists will be gathering
significant data gleaned from multiple spacecraft over the years
ahead to help answer that question. By learning more about the
hazards of global warming, rising sea level, deforestation, ozone
depletion, acid rain, and reduction of biodiversity, better stewardship
of spaceship Earth is possible.
We now appreciate that the key to gaining better knowledge
of the global environment is exploring how the Earth's systems
of air, land, water, and life interact with each other. This
approach--called Earth System Science--blends together fields
like meteorology, oceanography, biology, and atmospheric science.
Understanding our changing planet can be expertly done from space.
Land cover and land use change, seasonal-to-interannual climate
variability, natural hazards research and applications, long-term
climate variability, and atmospheric ozone are among the functions
best served by spaceborne observation.
Goddard is also responsible for the procurement, development,
and verification testing of the Geostationary Operational Environmental
Satellites (GOES). NASA also launches the GOES for the National
Oceanic and Atmospheric Administration (NOAA).

| The Tropical Rainfall
Measuring Mission (TRMM) is the first mission dedicated to measuring
tropical and subtropical rainfall through microwave and visible
infrared sensors, and includes the first spaceborne rain radar. |
Not only is the Earth of keen interest to Goddard scientists
and engineers. The center has managed the most challenging repair
and service missions ever conducted by NASA, the highly successful
flights to the Hubble Space Telescope. In February 1997, astronaut
teams installed two new instruments and refurbished other elements
of the orbiting observatory. In a few years, the Hubble Space
Telescope will again be serviced, with Goddard managing the activity.
Studies are also underway at the center focused on the Next Generation
Space Telescope (NGST), a 21st century near-infrared instrument.
NGST will provide major pieces of the puzzle currently missing
from the picture of the Universe, its evolution from the Big
Bang to the current epoch. This powerful telescope, utilizing
a host of advanced technologies, is expected to capture the light
from the first stars and galaxies; determine the shape of the
Universe and shed light on its eventual fate; map the chemical
evolution of the Universe by observing the first supernovae;
and observe debris disks around nearby stars.
Detector development at Goddard has enabled trailblazing research
in accurately locating mysterious gamma-ray bursts, determining
their distance scale, and measuring the physical characteristics
of the emission region. Similarly, Goddard engineers have advanced
far-infrared detector technology. The center's detector technology
has been applied to medical instrumentation, with other commercial
applications including industrial manufacturing, environmental
monitoring, and agricultural monitoring systems.
Goddard Space Flight Center's vision statement is direct in
purpose: "We revolutionize knowledge of the Earth and the
Universe through scientific discovery from space to enhance life
on Earth."

| The Earth
Observing System (EOS) is the centerpiece of Mission to Planet
Earth. EOS will build on the results of past missions, using
a series of satellites that will combine atmospheric, oceanic,
and land surface observations into a global environment study
focusing on climate change. |
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