×

UPSC Courses

DNA banner

DAILY NEWS ANALYSIS

GS-III :
  • 22 June, 2020

  • 4 Min Read

Artic Sea

Artic Sea

It is located mostly in the Arctic North Polar Region in the middle of the Northern Hemisphere, besides its surrounding waters the Arctic Ocean is surrounded by Eurasia and North America. It is partly covered by sea ice throughout the year and almost completely in winter.

The Arctic Ocean is the smallest and shallowest of the world's five major oceans and it is also known as the coldest of all the oceans. The International Hydrographic Organization (IHO) recognizes it as an ocean, although some oceanographers call it the Arctic Sea.

It is sometimes classified as an estuary of the Atlantic Ocean, and it is also seen as the northernmost part of the all-encompassing World Ocean. The Arctic Ocean's surface temperature and salinity vary seasonally as the ice cover melts and freezes. Its salinity is the lowest on average of the five major oceans, due to low evaporation, heavy fresh water inflow from rivers and streams, and limited connection and outflow to surrounding oceanic waters with higher salinities.

Decline in Artic Sea Ice

  • Sea ice arises as seawater freezes, because ice is less dense than water, it floats on the ocean's surface.
  • Sea ice covers about 7% of the Earth's surface and about 12% of the world's oceans.
  • Recently, National Centre of Polar and Ocean Research (NCPOR) have observed the largest decline in the Arctic Sea ice in the last 41 years.
  • According to recent observations in the last 40 years (1979-2018), the sea ice has been declining at 4.7% per decade, while the current declining rate was found to be 13% in July 2019.
  • Thus, it has been noted that the volume of ice formation during winters is unable to keep pace with the volume of ice loss during summers.
  • Additionally, it has been predicted that if this trend continues, there would be no ice left in the Arctic Sea by 2050.
  • The decrease of the Arctic Sea ice area and the increase in the duration of summer and autumn seasons affected the local weather and climate over the Arctic Ocean and its marginal seas.
  • It may affect other components of the climate system such as reduction of heat, water vapor, and other material exchange between the atmosphere and the sea.
  • The northern hemisphere experienced record high-temperature rise, especially during the spring and summer months.

National Centre of Polar and Ocean Research

  • It was established as an autonomous Research and Development Institution of the Ministry of Earth Sciences in 1998.
  • It is located in Goa.
  • Earlier known as National Centre for Antarctic and Ocean Research (NCAOR), NCPOR is India’s premier R&D institution responsible for the country’s research activities in the Polar and Southern Ocean realms.
  • It is the nodal agency for planning, promotion, coordination and execution of the entire gamut of polar and southern ocean scientific research in the country as well as for the associated logistics activities.

For arctic council read: https://www.aspireias.com/daily-news-analysis-current-affairs/Arctic-Council

For ANITA: https://www.aspireias.com/daily-news-analysis-current-affairs/ANITA-Antarctic-Impulsive-Transient-Antenna

Source: TH


Rajasthan First State to Implement Biofuel Policy

  Rajasthan First State to Implement Biofuel Policy: (GS-II(Policies) & GS-III(Environment)) Theme: Biofuel Policy Rajasthan has become the first State in the country to implement the national policy on biofuels unveiled by the Centre in May 2018.   The desert State will lay emphasis on increasing production of oils

SEHAT Scheme for Teleconsultation

Services e-Health Assistance and Teleconsultation (SeHAT) is the tri-services teleconsultation service of the Ministry of Defense designed for all entitled personnel and their families. As part of the Government’s commitment to Digital India and e-Governance, Minister of Defense launched SeHAT on 27 May 2021. It has been a great exam

PM Poshan Scheme to replace Mid Day Meal Scheme

PM Poshan (Erstwhile Mid Day Meal) Scheme Cabinet has approved the Prime Minister POSHAN scheme or PM-POSHAN for providing one hot cooked meal in Government and Government-aided schools. The scheme will replace the existing national programme for mid-day meal in schools or Mid-day Meal Scheme (launched in 1995). It has been launched for a

National Initiative for Design Innovation (NIDI)

National Initiative for Design Innovation (NIDI) Government launched the scheme of “National Initiative for Design Innovation (NIDI)” in March, 2014. Scheme envisaged establishment of 20 Design Innovation Centres (DIC), One Open Design School (ODS) and One National Design Innovation Network (NDIN) across the country for promoti

Saffron cultivation in India

Saffron is a plant whose dried stigmas (thread-like parts of the flower) are used to make saffron spice. Saffron cultivation is believed to have been introduced in Kashmir by Central Asian immigrants around the 1st Century BCE. Pampore region, in India, commonly known as Saffron bowl of Kashmir, is the main contributor to saffron p

Students Achievement

Search By Date

Newsletter Subscription
SMS Alerts