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Archive for the Earth Science category

March 5, 2018

GOES-S Liftoff

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Wikipedia dixit:

“GOES-17 (formerly GOES-S) is the second of the next generation of weather satellites operated by the National Oceanic and Atmospheric Administration (NOAA). The next satellites of the series (GOES-16, -17, -T, and -U) will extend the availability of the GOES (Geostationary Operational Environmental Satellite system) until 2036 for weather forecast and meteorology research. The satellite was built by Lockheed Martin, was based on the A2100A platform, and will have an expected useful life of 15 years (10 years operational after five years of standby as an on-orbit replacement).

NOAA’s GOES-R series of satellites is designed to improve the forecasts of weather, ocean, and environment by providing faster and more detailed data, real-time images of lightning, and advanced monitoring of solar activities and space weather. GOES-17 can collect three times more data at four times image resolution, and scan the planet five times faster than previous probes.

GOES-17 has the same instruments and capabilities as GOES-16 (currently serving as GOES-East), and will complement its work by scanning a different area of the world. GOES-17 will become GOES-West and cover the west Coast of US, Alaska, Hawaii, and much of the Pacific Ocean. These two satellites are expected to monitor most of the Western Hemisphere and detect natural phenomena, like hurricanes, wildfires, and fog in almost real time.”

Video credit: NASA

 

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February 23, 2018

2017 Hurricanes and Aerosols Simulation

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NASA dixit:

“How can you see the atmosphere? By tracking what is carried on the wind. Tiny aerosol particles such as smoke, dust, and sea salt are transported across the globe, making visible weather patterns and other normally invisible physical processes.

This visualization uses data from NASA satellites, combined with mathematical models in a computer simulation allowing scientists to study the physical processes in our atmosphere. By following the sea salt that is evaporated from the ocean, you can see the storms of the 2017 hurricane season. During the same time, large fires in the Pacific Northwest released smoke into the atmosphere. Large weather patterns can transport these particles long distances: in early September, you can see a line of smoke from Oregon and Washington, down the Great Plains, through the South, and across the Atlantic to England.

Dust from the Sahara is also caught in storms systems and moved from Africa to the Americas. Unlike the sea salt, however, the dust is removed from the center of the storm. The dust particles are absorbed by cloud droplets and then washed out as it rains.”

Video credit: NASA Goddard

 

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February 22, 2018

Carbon Dioxide and the Oceans

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ESA dixit:

“Atmospheric carbon dioxide is the most important human-made greenhouse gas responsible for global warming. Oceans assist in removing carbon dioxide from the atmosphere: phytoplankton accumulate carbon dioxide through photosynthesis and their chlorophyll colours the ocean’s waters. Satellites use this colour to measure chlorophyll, which helps scientists to calculate how much carbon dioxide is absorbed or emitted.”

Video credit: ESA/CCI Ocean Colour/Climate Monitoring User Group/Planetary Visions

 

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February 13, 2018

The Living Planet

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NASA dixit:

“Creating a major scientific visualization takes considerable time and expertise. A team of scientists and data visualizers work together to building an artful depiction of hard data – whether it be an animation of sea surface temperature, the paths of hurricanes, or life on Planet Earth. Get a closer look at how the “Living Planet” visualization was made from the perspective of its principle scientists, Gene Feldman and Compton Tucker and SVS data visualizer, Alex Kekesi. “

Video credit: NASA’s Goddard Space Flight Center/LK Ward

 

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NASA dixit:

“Explorer 1 showed that the United States was capable of not only launching a satellite but also carrying out scientific research in space. For four months after launch, instruments aboard Explorer 1 measured and sent back data on temperature, micrometeorites and cosmic rays, or high-energy radiation. University of Iowa physicist James Van Allen’s instrument for measuring cosmic rays, a Geiger counter, helped make the first major scientific find of the Space Age: a belt of radiation around Earth that would later be named in Van Allen’s honor.

“Explorer 1 was a beginning. It was the beginning of going beyond our sphere of life out into space,” said Thomas Zurbuchen, NASA associate administrator for science. “At first, quite frankly, space looked like a pretty boring place. But the instrument that Van Allen and his team built showed that space is beautiful.”

On the heels of Explorer 1’s success, the nation entered a new era of discovery on Earth and beyond that continues to this day.

In 1960, NASA launched the world’s first weather satellite, the Television and Infrared Observation Satellite (TIROS). The United States now has an extensive fleet of weather satellites operated by the National Oceanographic and Atmospheric Administration (NOAA) that monitors storms and other natural disasters and provides critical data that helps save lives and protect critical infrastructure.

In 1972, NASA designed and launched Earth Resources Technology Satellite 1, later renamed Landsat 1, as the first spacecraft designed to monitor the planet’s land masses. Subsequent Landsat satellites, now operated by the U.S. Geological Survey, have produced over four decades of continuous data about our changing planet that have been applied to such uses as crop health monitoring, freshwater and forest management and infectious disease tracking.

NASA has a long history of using the vantage point of space to advance our understanding of our complex home planet. The Nimbus-1 satellite launched in 1964 was the first of seven such spacecraft that revolutionized Earth science. Nimbus satellites measured snow cover at the North and South poles, estimated the size of volcanic eruptions and the distribution of phytoplankton in the oceans and confirmed the existence of the annual ozone hole in Antarctica. NASA’s current fleet of more than a dozen Earth-observing missions continues to provide new insights about Earth’s interconnected systems.

Looking beyond Earth’s horizon, in 1962 NASA launched Mariner 2, the first satellite to encounter another planet as the spacecraft flew within 21,000 miles of Venus and sent back information on not only the Venusian atmosphere but also the solar wind. The space agency has since dispatched satellites to explore every planet in the solar system, in addition to the Sun and a number of moons, comets and asteroids.

NASA has also long set its gaze out into the cosmos. From 1966 to 1972, the Orbiting Astronomical Observatory series of satellites provided the first high-quality ultraviolet observations of stars at the edge of the Milky Way. The space agency has continued its groundbreaking research into the mysteries of the universe with the 2004 launch of the Swift Gamma-ray Burst Explorer, which has imaged the most luminous known galaxies in addition to detecting millions of black holes and dwarf stars.

America’s 60 years of space science has yielded profound insights and practical benefits for the nation and the world. And NASA continues to blaze new trails of discovery.”

Video credit: NASA’s Goddard Space Flight Center/LK Ward

 

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January 23, 2018

Miniaturized Weather Satellite

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NASA dixit:

“Behind every weather forecast—from your local, five-day prediction to a late-breaking hurricane track update—are the satellites that make them possible. Government agencies depend on observations from weather satellites to inform forecast models that help us prepare for approaching storms and identify areas that need evacuating or emergency first responders.”

Elizabeth Willaman (Willaman Creative): Lead Producer

Andrea S. Martin (SGT): Producer

Kerri Cahoy (MIT): Scientist

Video credit: NASA’s Goddard Space Flight Center

 

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