Tuesday September 17, 2019
Home Lead Story 2018 Fourth-h...

2018 Fourth-hottest Year Since 1880; Earth Set to Get Warmer, Says NASA

"The impacts of long-term global warming are already being felt a" in coastal flooding, heat waves, intense precipitation and ecosystem change," said Schmidt

0
//
Earth depletion
Earth depletion, Pixabay

Earth’s global surface temperatures in 2018 were the fourth warmest since 1880 and the planet will warm further, especially since greenhouse gas emissions are continuing to rise, Nasa and the National Oceanic and Atmospheric Administration (NOAA) have said.

Global temperatures in 2018 were 0.83 degrees Celsius warmer than 1951 to 1980, according to scientists at Nasa’s Goddard Institute for Space Studies (GISS) in New York.

Globally, 2018’s temperatures ranked behind those of 2016, 2017 and 2015. The past five years are, collectively, the warmest years in the modern record.

“2018 is yet again an extremely warm year on top of a long-term global warming trend,” GISS Director Gavin Schmidt said in a statement on Wednesday.

Since the 1880s, the average global surface temperature has risen about 1 degree Celsius.

Kepler, NASA, tissue
NASA. Pixabay

This warming has been driven in large part by increased emissions into the atmosphere of carbon dioxide and other greenhouse gases caused by human activities.

“Weather dynamics often affect regional temperatures, so not every region on Earth experienced similar amounts of warming,” said NOAA.

Warming trends are strongest in the Arctic region, where 2018 saw the continued loss of sea ice.

Also Read- Delhi High Court Dismisses Plea Seeking Regulation on Netflix, Amazon Prime

“In addition, mass loss from the Greenland and Antarctic ice sheets continued to contribute to sea level rise.

“Increasing temperatures can also contribute to longer fire seasons and some extreme weather events.

“The impacts of long-term global warming are already being felt a” in coastal flooding, heat waves, intense precipitation and ecosystem change,” said Schmidt. (IANS)

Next Story

2 Big Asteroids Flying by Earth Pose no Risk: NASA

At the start of 2019, the number of discovered NEOs totaled more than 19,000, and it has since surpassed 20,000. An average of 30 new discoveries are added each week, NASA said

0
NASA Headquarter in USA, VOA

NASA has ruled that the pair of asteroids flying by Earth this weekend could pose a threat to our planet.

“These asteroids have been well observed – once since 2000 and the other since 2010 – and their orbits are very well known,” said NASA’s Planetary Defence Officer Lindley Johnson.

“Both of these asteroids are passing at about 14 lunar distances from the Earth, or about 3.5 million miles away, but small asteroids pass by Earth this close all the time,” Johnson said.

Near-Earth asteroid 2010 C01, estimated to be 120 to 260 metres in size, safely passed Earth at 3.42 a.m. on Saturday. The second object, 2000 QW7 is estimated to be 290 to 650 metres in size will pass later at 11.54 p.m. on Saturday.

NASA
Earth’s view from moon’s surface. Pixabay

Near-Earth objects (NEOs) are asteroids and comets that orbit the Sun, but their orbits bring them into Earth’s neighborhood – within 30 million miles of Earth’s orbit.

These objects are relatively unchanged remnant debris from the solar system’s formation some 4.6 billion years ago.

Also Read: Development And Protection Of Citizens – Duties Of Elected Political Executive

Most of the rocky asteroids originally formed in the warmer inner solar system between the orbits of Mars and Jupiter, while comets, composed mostly of water ice with embedded dust particles, formed in the cold outer solar system.

At the start of 2019, the number of discovered NEOs totaled more than 19,000, and it has since surpassed 20,000. An average of 30 new discoveries are added each week, NASA said. (IANS)