AUSTRAILIA BURNING AND GLOWING

NASA Earth Observatory images by Robert Simmon

FROM: NASA
Two weeks ago, we
published a new map of the Earth at night, built by Earth Observatory designers together with colleagues at the National Geophysical Data Center. That map—made possible by a new NASA and the National Oceanic and Atmospheric Administration (NOAA) satellite—showed the footprint of human civilization on the planet, as revealed by the lights we use to brighten the darkness.

But it turns out the map showed something more. Astute readers noticed lights in areas that were thought to be uninhabited. Many of those readers pointed to Western Australia and asked: How can there be so much light there?

The top image above shows the night lights of Australia as observed by the Visible Infrared Imaging Radiometer Suite (VIIRS) on the Suomi NPP satellite in April and October 2012. The composite image includes manmade light sources and the light of wildfires. The data were acquired over nine days in April 2012 and thirteen days in October 2012, and it took the satellite 312 orbits and 2.5 terabytes of data to get a clear shot of every parcel of Earth’s land surface.

NASA Earth Observatory images by Robert Simmon

The second map is a mosaic showing the burned areas of the landscape (red) from October 11–24, 2012, combined with urban areas (black). The data were collected by the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments on NASA’s Terra and HYPERLINK "http://aqua.nasa.gov/"Aqua satellites. In effect, the map shows where fires burned that month. Though many rural areas of interior Australia are dry and relatively barren by some standards, there is still enough vegetation to burn, as you can see by clicking on this view from the International Space Station and others from the MODIS instruments.

The extent of the lighting in the Outback and bush country is a function of composite imaging. Fires and other lights that were detected on one day were integrated into the composite, multi-day picture despite being temporary phenomena. Because different lands burned at different times that the satellite passed over, the cumulative result is the appearance of a massive blaze. But while the cities are fixed, the fires were temporary, moveable features. The night lights data set is a scientific work in progress, and the maps will be refined and improved over time.

Not every light in the night view matches up with a fire—partly because the fire map does not include fires from April and partly because not every fire leaves a scar that is detectable from space. Even simple cloud cover could prevent burn scars from being observed.

Aside from the fires, some of the night lights appearing in uninhabited areas can be attributed to natural gas flares, lightning, oil drilling or mining operations, and fishing boats—all of which can show up as points of light. One example is natural gas drilling in the Bakken Formation in North Dakota; another is the fishing boats plying the seas of Asia.

And ultimately, the new images of Earth at night are ripe for new discoveries. It’s easy to say that lands are uninhabited or barren—that there’s nothing out there to make light. But the satellite says there is light, so we should probably go take a look at what we have been overlooking or simply could not see before.

NASA Earth Observatory images by Robert Simmon, using Suomi NPP VIIRS data provided by Chris Elvidge (NOAA National Geophysical Data Center); MODIS Active Fire & Burned Area Products; and urban data from the University of Wisconsin-Madison Center for Sustainability and the Global Environment. Suomi NPP is the result of a partnership between NASA, NOAA, and the Department of Defense. Caption by Michael Carlowicz.

U.S. CHAIRMAN JOINT CHIEFS OF STAFF MEETS WITH COUNTERPART IN AUSTRAILIA



Map Credit:  U.S. State Department.



FROM: U.S. DEPARTMENT OF DEFENSE
By Jim Garamone
American Forces Press Service
PERTH, Australia, Nov. 12, 2012 – After meeting with his Australian counterpart here today, the chairman of the Joint Chiefs of Staff has met with the military leaders of America’s three closest allies in the Asia-Pacific region during his current overseas trip.

Army Gen. Martin E. Dempsey met Gen. David Hurley, chief of Australia’s defense force, upon his arrival for the annual ministerial consultations between the United States and Australia.

Earlier today, the chairman met with Gen. Shigeru Iwasaki, chief of staff of the Japanese joint staff. Yesterday, he met with his South Korean counterpart Gen. Jung Seung-jo following a full day of meetings in the South Korean capital of Seoul and a trip to Korea’s Demilitarized Zone.

In an interview, Dempsey said the alliances among the United States, South Korea, Japan and Australia are the most enduring in the Asia-Pacific. "What I’m trying to do is rise above the very topical and tactical issues and to gain some clarity and consensus on how we can find our way forward together," he added.

Reason exists to pursue multilateral architectures in the Asia-Pacific region, "but we have to take into account their preferences," the general said. He noted that a number of significant exercises have taken place in the region, citing the Thai-hosted Cobra Gold and the U.S.-sponsored Rim of the Pacific exercises as examples of multilateral cooperation among the region’s nations.

Asia-Pacific nations also are working more closely together in the counterpiracy mission from the Straits of Malacca to the Gulf of Aden.

Generally, the allies in the Pacific are comfortable with bilateral relations with the United States as a step toward multilateral relations, the chairman said.

During his trip to South Korea, Dempsey visited U.S. and South Korean troops at the Demilitarized Zone. Though he has been to Korea a number of times, it was his first visit to the frontier between the North and South.

"What I was struck by was 60 years of vigilance and partnership, and what that has meant," he said. "This generation of young Korean and American service members are following in the footsteps of previous generations. I felt damn glad to have them up there."

While he and Jung discussed the changes in North Korea, Dempsey said, they didn’t dwell on them. "We took stock of activities over time, whether it’s the obvious ones like the shelling of islands of the sinking of the Cheonan, or GPS jamming or the missile tests," he said. "Then we looked at not only what we should be doing to better prepare ourselves for whatever the future security situation brings up."

The alliance is successful, but it is going to change, the chairman said, noting that he and Jung discussed what needs to happen to transition to the strategic alliance of 2015. The United States will remain committed to the defense of South Korea, he explained, but the command relationship will change, and he and Jung discussed the path the two countries are on and what still needs to happen.

In Australia, Dempsey will join Secretary of State Hillary Rodham Clinton and Defense Secretary Leon E. Panetta in meetings with their counterparts. "This shows we are paying more attention to the Asia-Pacific," he said. "How that will manifest itself will be determined."

Dempsey said he expects the conversations to run the full gamut of issues both nations are concerned with, including force posture and partnering, freedom of navigation, counterpiracy, and all things that affect the maritime domain.

"I will also try to encourage a conversation about how in the Asia-Pacific there is a nexus or convergence of maritime issues with space issues with cyber issues," he said. "This convergence is worthy of our time to think through together."