NCPOR study notes dramatic decline in Arctic sea ice as global warming takes toll

re has been a dramatic decline in Arctic sea ice due to global warming which has led to a localized increase in evaporation, air humidity, cloud cover, and rainfall, a study by  National Centre of Polar and Ocean Research (NCPOR) has found. Arctic sea ice is a sensitive indicator of climate change and has strong retaliatory effects on or components of climate system.

In its observations, NCPOR has ted that largest decline in Arctic sea ice in past 41 years happened in July 2019. In last 40 years (1979-2018), sea ice has been declining at a rate of ‘-4.7%’ per dece, while its rate was found to be ‘-13%’ in July 2019.

"If this trend continues, re would be ice left in Arctic sea by 2050, which would be dangerous for humanity and entire environment," a statement from body said.

Led by senior NCPOR scientist Dr Avinash Kumar, research team comprised Juhi Yav and Rahul Mohan of NCPOR, Ministry of Earth Sciences, Goa. research paper has been published in  Journal of Natural Hazards.

RE | Scientists Find Polystyrene Fragments In Guts Of Soil-dwelling Organisms In Antarctica

Worrying element to te

With help of satellite data collected from 1979 to 2019, NCPOR has tried to understand rate of surface warming and changes in global atmospheric circulation. study has also pointed out that decrease of Arctic sea ice area and increase in duration of summer and autumn seasons have affected local wear and climate over Arctic Ocean and its marginal seas.

Being a sensitive indicator of climate change, loss of ice cover in Arctic sea has h strong feedback effects on or components of climate system such as prevention or reduction of heat and momentum, water vapour, and or material exchange between atmosphere and sea. worrying element to te is that volume of ice formation during winters is unable to keep pace with volume of ice loss during summers.

RE | Russian Town Witnesses Wildfires After Recording Hottest Arctic Temperature Ever

Satellite observations & model re-analysis data

“In background of global warming scenario, study reveals that global ocean-atmospheric warming has enhanced Arctic sea ice loss. study demonstrated application of satellite observations and model re-analysis data for determination and validation; 2019 sea-ice extent tied to second-lowest sea-ice minimum record," said Dr Avinash Kumar.

He ted said that although re are extreme wear events recorded this year, an accelerated decline in sea-ice extent and sea-ice volume in summer 2019 was dominant, and also rrn hemisphere has experienced record high-temperature rise especially during spring and summer months. 

“ sea-ice loss at this rate, concerning to all lives on Earth, can have a catastrophic impact due to rising global air temperature and slowing down of global ocean water circulation,” he ded.

RE | Antarctic Ice Sheets Melted 50 Times Faster Than Present Speed During End Of Ice

RE | Antarctica Sw Is Turning Green, Climate Change To Fuel Blooming Algae Growth: Study