Screenshot of one of the competing images in the Earth Madness competition bracket.
NASA’s Earth Observatory website has decided to join in on the bracketology fever that overtakes many US citizens during the month of March … but with science and not basketball. Instead of March Madness, it’s EARTH MADNESS! From March 4 through April 5, Earth Observatory fans can vote for their favorite images of the year. There are thirty-two images vying for the title, but only one can be the winner. This will be a head-to-head competition, whittling the total from 32 to 16 to 8 to 4 to 2 in a tournament of remote sensing science. The competition will be stiff in the four brackets — Earth at Night, Events, Data, and True-Color — so it is up to you to separate the winners from the losers. Check back each week to vote in the next round and help choose a winner.
Print a copy of the bracket, fill it out, and get that workplace pool going. Come back every Monday to vote and watch the results.
Lava flows on Mt. Etna visible from the The Advanced Land Imager (ALI) on the Earth Observing-1 (EO-1) satellite captured Etna on February 19, 2013. Credit: NASA
Italy’s Mount Etna has turned on again, spewing lava and gas in its first big eruption in 2013. The volcano is one of the most active in the world, and is Europe’s tallest active volcano, currently standing about 3,329 m (10,922 ft) high.
The volcano has been “simmering” for 10 months, but on February 19 and 20, the famous volcano came to life, providing dramatic visuals from the ground (see the video below) as well as from space, with three outbursts in less than 36 hours. This image from the Advanced Land Imager (ALI) on the Earth Observing-1 (EO-1) satellite captured Etna on February 19 at 9:59 a.m. Central European Time, about 3 hours after the end of the first outbursts.
The false-color image combines shortwave infrared, near infrared, and green light in the red, green, and blue channels of an RGB picture. This combination differentiates the appearance of fresh lava, snow, clouds, and forest.
Fresh lava is bright red—the hot surface emits enough energy to saturate the instrument’s shortwave infrared detectors, but is dark in near infrared and green light. Snow is blue-green, because it absorbs shortwave infrared light, but reflects near infrared and green light. Clouds made of water droplets (not ice crystals) reflect all three wavelengths of light similarly, and are white. Forests and other vegetation reflect near infrared more strongly than shortwave infrared and green light, and appear green. Dark gray areas are lightly vegetated lava flows, 30 to 350 years old.
The video from the ground was captured by Klaus Dorschfeldt, a videographer and webmaster at Italy’s National Institute of Geophysics and Volcanology.
In an update today on the Italian National Institute of Geophysics and Vocanology website, a fourth episode of lava fountains was reported. “Like the previous paroxysms, this event produced fountains and lava and an ash cloud that has shifted to the northern sector of the volcano.”
Canadian astronaut Chris Hadfield with the new ISERV (International Space Station SERVIR Environmental Research and Visualization System), a modified Celestron telescope for Earth observation. Credit: NASA/CSA
Astronauts on the International Space Station today are installing a new modified Celestron telescope. This won’t be used to observe the stars, but instead look back to Earth to acquire imagery of specific areas of the world for disaster analysis and environmental studies. Called ISERV (International Space Station SERVIR Environmental Research and Visualization System), it is a new remote-controlled imaging system.
“Essentially, it will be pointed out of one of the windows of the Space Station, and used for Earth imaging,” Andrea Tabor, social media coordinator for Celestron told Universe Today, “especially for natural disasters and to help countries that may not have their own Earth-observing satellites to help assess damage and assist with evacuations.”
ISERV will be installed in the Window Observational Research Facility (WORF) in the station’s Destiny laboratory.
The Celestron CPC 925, is a 9.25″ diffraction limited Schmidt-Cassegrain telescope and off-the-shelf sells for $2,500 including the mount, (just the 9.25 inch optical tube sells for $1,479). It was modified at the Marshall Space Flight Center.
“They used the fork mount that comes with it,” Tabor said, “but they just removed the tripod and replaced it with a specialized mount to anchor and stabilize it on the ISS.”
Because it is pointed out of a window and because the ISS is moving so fast, it would be difficult to align it with the sky and do any celestial imaging, Tabor said.
ISERV is the first of what is hoped to be a series of space station Earth-observing instruments, each to feature progressively more capable sensors to help scientists gain operational experience and expertise, as well as help design better systems in the future. Scientists envision that future sensors could be mounted on the exterior of the station for a clearer, wider view of Earth.
It arrived on the ISS in July of 2012 on board the Japanese HTV-3.
“It’s been up there sitting in a box, so today was unboxing and assembly day,” Tabor said. She added that they hope to post some of the first images from the telescope on their Twitter and Facebook pages.
The telescope will normally be operated by remote-controlled from Earth and so the astronauts won’t likely be working with it directly except for assessing its operation or troubleshooting any problems.
“Images captured from ISERV on the ISS could provide valuable information back here on Earth,” said Dan Irwin, SERVIR program director at Marshall. “We hope it will provide new data and information from space related to natural disasters, environmental crises and the increased effects of climate variability on human populations.”
Lines of scorched earth and huge smoke plumes from wild fires in Australia were visible from the International Space Station on January 8, 2013. Credit: NASA/Chris Hadfield
Intense wild fires, or bush fires as they are called in Australia, are burning out of control across southeast Australia with authorities describing the condition as “catastrophic.” The huge fires were easily visible from the International Space Station on Tuesday and onboard, Canadian astronaut Chris Hadfield has been watching from above.
See more of his images below:
Officials say more than 130 fires, many uncontained, are burning in the heavily populated New South Wales state, where dry conditions are fueling the fires as temperatures reached 45 degrees and wind gusts reached more than 100 kilometers per hour.
Huge plumes of smoke from bush fires in Australia were visible from the International Space Station. Credit: NASA/Chris Hadfield.
In Tasmania, an island south of Australia, rescue officials are still trying to locate around 100 residents who have been missing after a fire tore through a village, destroying dozens of homes. You can see images from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite that were taken on January 7, 2013 at the Earth Observatory website.
Earth, as seen by the GOES15 satellite on December 12, 2012. Credit: NASA/NOAA GOES Project/Dennis Chesters
Although we don’t subscribe to hokum like numerology or think that dates on a man-made calendar could have any sort of cosmic significance, there is something about a little symmetry. The GOES-15 satellite captured this image of Earth today, which is 12/12/12 on the Gregorian calendar, and even added a bonus of taking the image at 1200 UTC.
Too bad the GOES-12 spacecraft had some thruster problems and is currently in a standby mode.
Dennis Chesters, project scientist of NASA’s GOES Project at the NASA Goddard Space Flight Center said this image does something significant, however: the fourth tropical cyclone in the southern Pacific Ocean. Newborn Tropical Storm Evan was born today, Dec. 12, 2012 at 1500 UTC (10 a.m. EST) and appears as a rounded area of clouds in the bottom left corner of the image. Tropical Storm Evan is about 145 nautical miles west of Pago Pago, American Samoa.
For over 40 years, the ‘Blue Marble’ images of Earth taken from space have provided a new perspective of our planet, and the sometimes life-altering experience of such views was described in Frank White’s book “The Overview Effect,” published in 1987. When it came out, I gobbled it up, and have since read it several times.
Today, on the 40th anniversary of the final launch of the Apollo missions to the Moon, a new short film “Overview” has been released, which explores this phenomenon through interviews with five astronauts who have experienced first-hand seeing Earth from space.
“This view of the Earth from space – the whole Earth perspective – is, I think, the true symbol of this age,” says White in the film. “I believe … there’s going to be a greater and greater interest in communicating this idea because, after all, it’s key to our survival. We have to start acting as one species with one destiny. We are not going to survive if we don’t do that.”
The film is an inspiring look at how exploring space has given us look back at our own world and changed our perceptions. While some may say the Overview Effect is only a concept, an ideal outcome of space exploration that has yet to become a global phenomenon, I believe it is certainly something we should strive for.
The Blue Marble image from Apollo 17. Credit: Image courtesy NASA Johnson Space Center. See more info about it here.
The film includes:
Edgar Mitchell – Apollo 14 astronaut and founder of the Institute of Noetic Sciences
Ron Garan – ISS astronaut and founder of humanitarian organization Fragile Oasis
Nicole Stott – Shuttle and ISS astronaut and member of Fragile Oasis
Jeff Hoffman – Shuttle astronaut and senior lecturer at MIT
Shane Kimbrough – Shuttle/ISS astronaut and Lieutenant Colonel in the US Army
Frank White – space theorist and author of the book ‘The Overview Effect’
David Loy- philosopher and author
David Beaver – philosopher and co-founder of The Overview Institute
It was produced by a group called Planetary Collective, specifically Guy Reid, Steve Kennedy and Christopher Ferstad.
This image of Asia and Australia at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012. Credit: NASA, NOAA, and the Department of Defense.
Two months of night-time imagery gathered by the Suomi NPP satellite have resulted in a stunning new look at Earth at night, appropriately nicknamed the Black Marble.
The nighttime views were made possible by the new satellite’s “day-night band” of the Visible Infrared Imaging Radiometer Suite. VIIRS detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe dim signals such as city lights, gas flares, auroras, wildfires, and reflected moonlight. In this case, auroras, fires, and other stray light have been removed to emphasize the city lights.
“This is not your father’s low light sensor!” said Steve Miller, senior research scientist and deputy director of the Cooperative Institute for Research in the Atmosphere (CIRA), Colorado State University, speaking at the American Geophysical Union conference this week.
See more views and a video presentation of the VIIRS data below:
The new satellite is providing a much higher resolution across a greater band of light than previous night-light gathering satellites.
Originally developed for meteorologists to be able to look at nighttime clouds, the VIIRS data is providing a wide variety of information. “We are getting as much mileage from these data sets as we can,” said Chris Elvidge, who leads the Earth Observation Group at NOAA’s National Geophysical Data Center.
Elvidge and Miller said the data is being used to model population distribution, fossil fuel and CO2 emissions, and other information that can be gleaned from nighttime lights such finding power outages, determining astronomical viewing conditions, providing site selection for astronomical observatories, and looking at impacts of artificial lights on humans and animals.
The difference between electrical lights and fires, and night glow and auroras can even be determined by VIIRS.
North and South America at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012. Credit: NASA, NOAA, and the Department of Defense.
Europe, Africa, and the Middle East at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012. Credit: NASA, NOAA, and the Department of Defense.
Named for satellite meteorology pioneer Verner Suomi, NPP flies over any given point on Earth’s surface twice each day at roughly 1:30 a.m. and p.m. The polar-orbiting satellite flies 824 kilometers (512 miles) above the surface, sending its data once per orbit to a ground station in Svalbard, Norway, and continuously to local direct broadcast users distributed around the world,
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Caption: GOCE over ice. Credits: ESA – AOES Medialab
Since March 2009, the European Space Agency (ESA) mission, Gravity field and steady-state Ocean Circulation Explorer (GOCE) has been orbiting Earth. It carries highly sensitive instrumentation able to detect tiny variations in the pull of gravity across the surface of the planet, allowing it to map our planet’s gravity with unrivaled precision, producing the most accurate gravity map of Earth. With the planned mission completed, the fuel consumption has been much lower than anticipated, enabling ESA to extend GOCE’s life and put it into an even lower orbit, improving the quality of the gravity model.
The GOCE spacecraft was designed to fly low and has spent most of its mission roughly 500km below most other Earth-observing missions, at an altitude of 255km. ESA’s Earth Scientific Advisory Committee recommended lowering the orbit by 20km at a rate of about 300m per day, starting in August. After coming down by 8.6 km, the satellite’s performance and orbit were assessed. Now, GOCE is again being lowered while continuing its gravity mapping. It is expected to reach 235 km by February.
Decreasing the altitude increases the spatial resolution and the precision of the data. The expected increase in data quality is so high (possibly 35%) that scientists are calling it GOCE’s ‘second mission. Volker Liebig, ESA’s Director of Earth Observation Programmes has said “What the team of ESA engineers is now doing has not been done before and it poses a challenge. But it will also trigger new research in the field of gravity based on the high-resolution data we are expecting.”
Caption: The image on the left shows GOCE’s gravity measurements over northern Europe, acquired from its previous altitude. The image on the right depicts the expected measurements over the same area after the satellite has been lowered. Credits: ESA / GOCE+ Theme 2
The first ‘geoid’ based on GOCE’s gravity measurements was unveiled in June 2010. It is a crucial reference for conducting precise measurements of ocean circulation, sea-level change and ice dynamics. The mission has also been studying air density and wind in space, and its data was recently used to produce the first global high-resolution map of the boundary between Earth’s crust and mantle, called the Mohorovicic, or “Moho” discontinuity.
As the orbit drops, atmospheric drag increasingly pulls the satellite towards Earth, so GOCE has to use the tiny thrust of its ion engine to continuously compensate for any drag to stay aloft and maintain the stability it needs to measure Earth’s gravity. GOCE has enough xenon fuel for another 50 weeks of operations. When the fuel runs out the satellite will be pulled into the deep atmosphere where it will burn up
Hurricane Sandy as viewed by the TRMM Precipitation Radar at 2:20 EDT on Oct. 28, 2012. Credit: NASA
Satellite imagery and data has been invaluable in predicting the path and intensity of storms like Hurricane Sandy. Satellites like NASA’s Tropical Rainfall Measuring Mission (TRMM) can measure rainfall rates and cloud heights in tropical cyclones, and was used to create a 3-D image, above, to allow forecasters to look inside the hurricane, and predict fairly spot-on what locations would be affected the worst. There’s even a 3-D video view from the CloudSat satellite, and much more, including a stunning wind map, and this round-up from JPL of various satellite views of the storm. You can also see a slideshow of NASA satellite images and videos on the NASA Goddard Flickr site.
This exemplifies just one reason why space exploration is important, and why people are maybe now starting to realize how our failure to plan ahead and invest in weather satellites may become a problem. Without those eyes in the sky we are blind to the minute-to-minute and hour-to-hour development of storms and weather, not to mention overall study of the climate.
Below is a stunning high-speed satellite view from the GOES-14 satellite:
Focusing just on the area of the storm, the GOES-14 Super Rapid Scan Operation (SRSO) captures infrared and visible data every minute and relays that information to forecasters on the ground. This animation shows the GOES-14 SRSO for October 29, 2012 as Hurricane Sandy approached the U.S. coastline.
Here’s the view of Hurricane Sandy from an altitude of 254 statute miles from external cameras on the International Space Station. This video was shot as the ISS flew over the US’s eastern seaboard at 12:52 Eastern time October 29, 2012. Sandy has yet to officially make landfall, but the huge storm is already battering a region that makes up the most densely populated area of the US. The combination of three different storms has caused it to be dubbed as “Frankenstorm,” but it could turn into a “Blizzicane” as a winter storm merges with Sandy. The hurricane itself is strengthening as it barrels toward a landfall along the New Jersey coastline.
Below is video of the ISS pass at 11:16 a.m on Monday:
At the time of the flyover, Sandy was located 420 km (260 miles) south-southeast of New York City, moving north-northwest at 18 miles an hour with winds measured at 90 miles an hour as a Category 1 hurricane, according to the National Hurricane Center.
The huge slow moving combination of storms stretches about 1,600 km (1,000 miles) from north to south and significant impacts of storm surge and flooding are expected, with at least 7-10 inches of rain. This comes along with a snow advisory in some regions, creating a “Blizzicane” in the mountains of West Virgina, with 2-4 feet of snow predicted.
Forecasters are predicting this to be a multi-billion dollar storm disaster.
Here are some recent images of the storm:
Satellite View of Hurricane Sandy on Oct. 29 at 9:10 EDT by NOAA’s GOES-13 satellite.
Hurricane Sandy Viewed in the Dark of Night. Image acquired by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite around 2:42 a.m. Eastern Daylight Time (06:42 Universal Time) on October 28, 2012.
