NASA

Space-based quantification of per capita CO2 emissions from cities

Urban areas are currently responsible for ~70% of the global energy-related carbon dioxide (CO2) emissions, and rapid ongoing global urbanization is increasing the number and size of cities. Thus, understanding city-scale CO2 emissions and how they vary between cities with different urban densities is a critical task. While the relationship …

Heat source under Antarctica melting its ice sheet: NASA

A geothermal heat source called mantle plume lies deep below Antarctica's Marie Byrd Land, explaining some of the melting that creates lakes and rivers under the ice sheet, a NASA study has found. Although the heat source is not a new or increasing threat to the West Antarctic ice sheet, …

Mysterious particles spotted in Saturn’s atmosphere

NASA's Cassini spacecraft continues to yield surprising discoveries, more than a month after it burned up on its mission-ending dive into Saturn. New data from the probe suggest that Saturn's majestic rings are showering tiny dust particles into the planet's upper atmosphere, where they form a complicated and unexpected chemical …

Meanwhile, amid crop burning season, air quality worsens

Diwali, this year, is 11 days earlier than last year and Delhi might see a little respite since temperatures have, as of yet, not dipped as much as they had last year. With crop burning going on in full swing during harvest season, Delhi’s air quality has taken a turn …

Mysteries of Sun’s corona on view during upcoming eclipse

When the Moon’s shadow races across the continental United States on 21 August, researchers will be waiting — in planes, on mountaintops and at other carefully chosen vantage points along the roughly 110-kilometre-wide path of totality. Thanks to the sheer number of observers, solar physicists hope to learn more from …

2017 is so far the second-hottest year on record thanks to global warming

With the first six months of 2017 in the books, average global surface temperatures so far this year are 0.94°C above the 1950–1980 average, according to NASA. That makes 2017 the second-hottest first six calendar months on record, behind only 2016. That’s remarkable because 2017 hasn’t had the warming influence …

Arctic winter warming events becoming more frequent

Arctic winter warming events, winter days when temperatures peak above minus 10 degrees Celsius, are becoming more frequent and lasting longer than they did three decades ago, a new research has found. The study, published in the journal Geophysical Research Letters, showed that since 1980, an additional six warming events …

Crop fires reduced, Delhi's air quality better this year

Crackdown By Punjab, Haryana Working So Far There has been an increase in burning of wheat crop stubble in Punjab and Haryana this week compared with the previous one, Nasa's satellite pictures reveal. But the images also reveal a larger and more significant trend -the practice of crop-burning is down …

Air pollution in Delhi set to worsen, NASA images show huge rise in crop burning in region

Images from NASA, over the last one week, have suggested an increase in the number of fires in Delhi-NCR area, showing that the crops are constantly being burnt in the region, mainly in Haryana Images from NASA, over the last one week, have suggested an increase in the number of …

Another fire in Bandipur forest, Nasa satellites capture images

Wildfire broke out in Kalkere range, Bandipur Tiger Reserve, on Saturday A day after fire broke out in the Kalkere range of Bandipur Tiger Reserve (BTR) killing a forest guard, fire engulfed the Gundre range on Sunday morning. The two wildfires have been captured by Nasa’s satellites. A senior Forest …

Agriculture for space: People and places paving the way

Agricultural systems for space have been discussed since the works of Tsiolkovsky in the early 20th century. Central to the concept is the use of photosynthetic organisms and light to generate oxygen and food. Research in the area started in 1950s and 60s through the works of Jack Myers and …

NASA simulation highlights how CO2 spreads in the earth's atmosphere

This recently released NASA simulation of the global atmospheric carbon dioxide (CO2) cycle offers a powerful counterpoint to the Trump team’s push to marginalize climate change research. This recently released NASA simulation of the global atmospheric carbon dioxide (CO2) cycle offers a powerful counterpoint to the Trump team’s push to …

Extreme warmth in Arctic promises more volatile weather in 2017

A spate of extreme warmth in the Arctic over the past two months has startled scientists, who warn that the high temperatures may lead to record-low ice coverage next summer and even more warming in a region that is already among the hardest hit by climate change, The New York …

Falling temperatures may ramp up air pollution this week

However, environment experts caution that this dip in temperature could bring back the deadly smog that enveloped the national capital after Diwali The coming week may bring cheer to many as it coincides with a fall in temperature. However, such a fall will come with its own cost with pollution …

Pollution from India, China reaches stratosphere, speeds up global warming

The rising warm air, in turn, sucks in cooler air from Indian Ocean, causing an earlier onset of monsoon Pollutants from China and India, are not only increasing in quantity but are also being pumped to greater heights in the atmosphere, thanks to the South Asian summer monsoon system, scientists …

North India may be impacting global climate

Air pollution in north India doesn't only affect local residents. Emissions from the region's vehicles, farm fires and power plants may be lifted by the monsoon right up to the stratosphere, with possible implications for regional and global climate. NASA scientists have detected a layer of tiny aerosol particles in …

The choke’s on and here to stay after Diwali

NEW DELHI: Brace for severely poor air quality this Diwali, primarily due to two reasons: one, pollution levels are already high because of massive agricultural-residue burning in neighbouring states and, two, weather conditions are unlikely to be favourable for dispersion of pollutants emitted on Diwali. Locally, too, waste burning is …

The tree counter

Matthew Hansen uses satellites to spot deforestation as it happens.

Tax fossil fuels or risk kids' future: US climate scientist

The planet's three most dangerous greenhouse gases are rising, and fossil fuels must be taxed to protect children from the costly turmoil of rising seas and extreme storms, world-renowned climate scientist James Hansen warned Tuesday. Otherwise, young people face the "dubious" proposition of somehow sucking carbon dioxide from the air …

Delhi appeals to Centre, neighbours on curbing air pollution

Delhi government today appealed to the Centre and governments of three neighbouring states to take effective steps for prevention of burning of agriculture residue so as to reduce air pollution level in the national capital. Delhi Environment Minister Imran Hussain has written to the Union Environment Minister Anil Madhav Dave …

‘Neighbours to blame for stubble burning’

New Delhi: Responding to the high court's direction that there should be no biomass burning this year, Delhi government has decided to file an affidavit explaining that NASA images have proved that pollution levels in the city increase every November due to crop stubble burning in neighbouring states. Since Delhi …

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