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March 23rd 2017 Science and Technology Current Affairs

Climate will be More Extreme with Unusual Weather in 2017

  • World Meteorological organisation reported that the climate would be more extreme this year.
  • It also said that the weather would be unusual this year when compared with the previous years.
  • Images of Arctic sea in winter which are provided by the NASA and National Snow and Ice Data Centre showed alarming low levels of sea ice.
  • World Meteorological Organisation’s (WMO) our Planet’s sea-ice coverage reduced by more than four million square kilometres below the average in November month and Global sea level are is at record highs in 2016.
  • As per the UN weather agency, extreme weather and climatic conditions such as including Arctic “heatwaves”, will continue or increase in 2017.
  • Global temperatures are 1.1 degree Celsius above the average temperature of pre-industrial period.
  • Carbon dioxide levels in the atmosphere are consistently breaking new records, and the influence of human activities on the climate system is more evident.

India built Hypersonic wind tunnel Indigenously

  • The Indian Space Research Organisation (ISRO) at Thiruvananthapuram had commissioned the world’s third-largest hypersonic wind tunnel.
  • This hypersonic wind tunnel can be still optimised to be used for space transportation systems.
  • In memory of Satish Dhawan, a noted scientist, at the Vikram Sarabhai Space Centre (VSSC) this one-meter Hypersonic Wind Tunnel and a one-meter Shock Tunnel, will be used to study the effects of air flowing past a solid object,
  • Vikram Sarabhai Space Centre (VSSC) is located at Thiruvananthapuram.
  • In the coming months, ISRO is planning to launch big missions viz., air-breathing propulsion systems, Two Stage To Orbit (TSTO) rockets, Reusable Launch Vehicle (RLV), and also the human space flight programme in the near future.

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