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Indian-American NASA Scientist reveals new global climate data

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Washington:  An Indian-American scientist working with NASA has revealed how temperature and rainfall patterns may change through the year 2100 because of growing concentrations of greenhouse gases in the Earth’s atmosphere.

New high-resolution global climate data prepared by Ramakrishna Nemani, project scientist at the NASA Earth Exchange (NEX), a big-data research platform in California, can be viewed on a daily timescale at the scale of individual cities and towns.

It will help the scientists and planners in conducting climate risk assessments to understand local and global effects of hazards, such as severe drought, floods, heat waves, and losses in agriculture productivity better.

“This is a fundamental dataset for climate research and assessment with a wide range of applications,” Nemani said in a statement.

“NASA continues to produce valuable community-based data products on the NEX platform to promote scientific collaboration, knowledge sharing, and research and development,” Nemani added.

The data shows projected changes worldwide at a regional level, in response to different scenarios of increasing carbon dioxide simulated by 21 climate models.

“With this new global data-set, people around the world have a valuable new tool to use in planning how to cope with a warming planet,” noted Ellen Stofan, NASA chief scientist.

This NASA data-set integrates actual measurements from around the world with data from climate simulations.

These climate simulations used the best physical models of the climate system available, to provide forecasts of what the global climate might look like under different greenhouse gas emissions scenarios.

The NASA climate projections provide a detailed view of future temperature and precipitation patterns around the world at a 25-km resolution, covering the time period from 1950 to 2100.

The 11-terabyte data-set provides daily estimates of maximum and minimum temperatures and precipitation over the entire globe. (IANS)

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NASA’s human ‘computer’ is still working at age 80

Sue Finely calculated rocket trajectories by hand

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Sue Finley still works at NASA
Sue Finley, 80, is still working at NASA's Jet Propulsion Laboratory in Pasadena, California. She started there in 1958 as a human "computer," calculating trajectories for rockets. VOA

Sue Finley, now 80 years old and NASA’s longest-serving female employee, recalls her early days with the space agency when she worked as a human “computer,” calculating rocket trajectories by hand at a time when computers were huge and expensive to operate.

Finley arrived at Jet Propulsion Laboratory (JPL) in Pasadena, California, in January 1958, one week before the U.S. Army launched Explorer 1, America’s first earth satellite.

“It was a very big deal,” she recalls of the launch, a response to the launches a few months earlier of the first satellites, Sputnik 1 and 2, from the former Soviet Union.

She was at JPL for Pioneer 1, the first satellite sent aloft by the newly formed National Aeronautics and Space Administration (NASA) in late 1958, which marked the beginning of the international space race.

Unmanned space probes

Since then, Finley has had a role in nearly every U.S. unmanned space probe, and some missions of other nations.

There were failures to overcome and spectacular successes, but always new goals as scientists expanded our knowledge of the earth and solar system.

“We were certainly proud,” she says of NASA accomplishments, “but you just go to the next thing.”

Finley has been through several career changes with the space agency, one of the most important when NASA phased out human computers, moving, initially, to simple electronic versions.

“We got little tiny computers,” she recalls. “One I had 16 wires, jumper cables to code with. One had 10 pegboards that you programmed with.”

As modern computers took over navigational tasks, Finley developed and tested software as a subsystem engineer.

Among her career highlights: the Vega mission, a Soviet-French collaboration with Venus, and Halley’s Comet, which received navigational help from NASA and dropped balloons into the atmosphere of Venus.

She had to change the software for the antenna that tracked the mission, “and it worked,” Finley recalls. “Everything worked. That’s what was so exciting!”

Finley has worked since 1980 on NASA’s Deep Space Network, which coordinates satellite facilities in California, Spain and Australia that allow communication with space probes.

Highlights of NASA career

Career highlights include developing software that generates audio tones sent back from spacecraft, informing engineers on the ground what is happening in space. It was first developed for the Mars missions.

Each tone has a meaning that communicates data, noted one of Finley’s colleagues, Stephen Lichten.

“If a parachute opened, it would send a tone,” Lichten, manager for special projects for the Deep Space Network, said.

“The spacecraft lets go of its heat shield, and it would send a different tone, and so engineers like Sue were here listening for those special frequencies which told them the spacecraft was telling them what it has just done,” he said.

He notes that Finley also helped develop communication arrays that combine multiple antennas to act in unison and other advances that now crucial to space missions.

Lichten once shared an office with Finley and says she inspired her younger colleagues.

“There was a parade of people coming in constantly, to ask her advice, to ask her questions,” he recalls. “This was during the Venus balloon mission days and I realized that Sue was regarded as sort of a guru at JPL.”

Finley has been involved with nearly every advance in space communications in recent decades, and she continues her work today, Lichten said.

There are many more women at NASA today than there were when she started, and Finley said she tells young women to be inquisitive.

“I tell them to never be afraid to ask questions, never be afraid to say you don’t know,” she said.

After nearly six decades at the space agency, a mother of two grown sons and a mentor to her colleagues, Finley has no plans of retiring.

“There’s nothing else I want to do,” she said. “And so far, they need me.”

As they have since the earliest days of the space agency. (VOA)

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20 Years of Changing Seasons on Earth Captured into 2½ Minutes by NASA

NASA captured 20 years of changing seasons in a striking new global map of the home planet that shows Earth's fluctuations as seen from space

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The Changing seasons of the Earth
The Changing seasons of the Earth has been captured by NASA. Wikimedia.

NASA captured 20 years of changing seasons on Earth in a striking new global map of the home planet.

The data visualization, released this week, shows Earth’s fluctuations as seen from space.

The polar ice caps and snow cover are shown ebbing and flowing with the seasons. The varying ocean shades of blue, green, red and purple depict the abundance — or lack — of undersea life.

“It’s like watching the Earth breathe. It’s really remarkable,” said NASA oceanographer Jeremy Werdell, who took part in the project.

Two decades — from September 1997 to this past September — are crunched into 2½ minutes of viewing.

Werdell finds the imagery mesmerizing. “It’s like all of my senses are being transported into space, and then you can compress time and rewind it, and just continually watch this kind of visualization,” he said Friday.

Werdell said the visualization shows spring coming earlier and autumn lasting longer in the Northern Hemisphere. Also noticeable to him is the receding of the Arctic ice caps over time — and, though less obvious, the Antarctic, too.

On the sea side, Werdell was struck by “this hugely productive bloom of biology” that exploded in the Pacific along the equator from 1997 to 1998 — when a water-warming El Nino merged into cooling La Nina. This algae bloom is evident by a line of bright green.

In considerably smaller Lake Erie, more and more contaminating algae blooms are apparent — appearing red and yellow.

All this data can provide resources for policymakers as well as commercial fishermen and many others, according to Werdell.

Programmer Alex Kekesi of NASA’s Goddard Space Flight Center in Maryland said it took three months to complete the visualization, using satellite imagery.

Just like our Earth, the visualization will continually change, officials said, as computer systems improve, new remote-sensing satellites are launched and more observations are made. (VOA)

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Prince Charles Arrives in New Delhi for two day Visit to Meet PM Narendra Modi

Prince Charles, the Prince of Wales, accompanied by his wife arrived New Delhi for a two-day visit to India to complete their 10-day four-nation tour

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Prince Charles visits India with his wife for two days. Wikimedia.

New Delhi, Nov 9: Prince Charles, the Prince of Wales, accompanied by his wife, the Duchess of Cornwall, Camilla Parker-Bowles, arrived New Delhi on Wednesday on a two-day visit to India at the final leg of their 10-day four-nation tour that also took them to Singapore, Malaysia and Brunei.

“Their Royal Highnesses Prince of Wales and the Duchess of Cornwall arrive,” the British High Commission in India tweeted.

Prince Charles is scheduled to meet Prime Minister Narendra Modi on Wednesday evening and discuss a wide range of issues, including that of the Commonwealth Heads of Government Meeting (CHOGM) which will take place in April 2018 in the UK.

Prince Charles
Prince Charles arrives in India with his wife. IANS.

Ahead of the royal couple’s arrival, External Affairs Ministry spokesperson Raveesh Kumar said climate change, Sustainable Development Goals (SDGs), economic cooperation, and other bilateral issues would also come up for discussion.

Bilateral trade between India and Britain stands at $12.19 billion. India is the third largest investor in Britain and the second largest international job creator in that country.

Britain is the third largest inward investor in India, with a cumulative equity investment of $24.37 billion for the period April 2000-June 2017

The Indian diaspora in UK is one of the largest ethnic minority communities in the country, with the 2011 census recording approximately 1.5 million people of Indian origin equating to almost 1.8 percent of the population and contributing 6 per cent of the country’s GDP.

This will be Prince Charles ‘s ninth visit to India. He had earlier visited India in 1975, 1980, 1991, 1992, 2002, 2006, 2010 and 2013. (IANS)