Saturday July 20, 2019

Greenland Might be Ice-Free by Year 3000 if Greenhouse Gas Emissions Remain on Current Trajectory

Currently, the planet is moving toward the high estimates of greenhouse gas concentrations

0
//
greenland
The team used data from a NASA airborne science campaign called 'Operation IceBridge'. Pixabay

Greenland could lose 4.5 per cent of its ice, contributing up to 13 inches of sea level rise, by the end of this century if worldwide greenhouse gas emissions remain on their current trajectory, warns a new study. The island might be ice-free by the year 3000, said the study published in the journal Science Advances.

“How Greenland will look in the future — in a couple of hundred years or in 1,000 years — whether there will be Greenland or at least a Greenland similar to today, it’s up to us,” said lead author Andy Aschwanden, Research Associate Professor at University of Alaska Fairbanks Geophysical Institute in the US.

greenland
This research used new data on the landscape under the ice today to make breakthroughs in modelling the future. Pixabay

This research used new data on the landscape under the ice today to make breakthroughs in modelling the future. The findings show a wide range of scenarios for ice loss and sea level rise based on different projections for greenhouse gas concentrations and atmospheric conditions.

Currently, the planet is moving toward the high estimates of greenhouse gas concentrations. Greenland’s ice sheet is huge, spanning over 660,000 square miles. Today, the ice sheet covers 81 per cent of Greenland and contains eight of Earth’s fresh water bodies.

If greenhouse gas concentrations remain on the current path, the melting ice from Greenland alone could contribute as much as 24 feet to global sea level rise by the year 3000, which would put much of San Francisco, Los Angeles, New Orleans and other cities under water, said the study.

greenland
Currently, the planet is moving toward the high estimates of greenhouse gas concentrations. Pixabay

ALSO READ: Swimming in Ocean Alters Skin Microbiome and Increases Risk of Ear, Skin Infection: Study

The team used data from a NASA airborne science campaign called ‘Operation IceBridge’. Operation IceBridge uses aircraft equipped with a full suite of scientific instruments, including three types of radar that can measure the ice surface, the individual layers within the ice and penetrate to the bedrock to collect data about the land beneath the ice.

On average, Greenland’s ice sheet is 1.6 miles thick, but there is a lot of variation depending on where you measure. Between 1991 and 2015, Greenland’s ice sheet has added about 0.02 inches per year to sea level, but that could rapidly increase. (IANS)

Next Story

New York Governor Signs Ambitious Climate Change Bill with Goal of Slashing Greenhouse Gas Emissions by 2030

He was joined by former U.S. Vice President Al Gore, who has made fighting global warming his life's work

0
climate change
New York Gov. Andrew Cuomo, right, accompanied by former Vice President Al Gore, announces that he is signing the Climate Leadership and Community Protection Act, Thursday, July 18, 2019, at Fordham University in New York. VOA

New York Governor Andrew Cuomo signed an ambitious climate change bill Thursday with the goal of slashing the state’s greenhouse gas emissions 85% below what they were in 1990.

“Cries for a new green movement are hollow political rhetoric if not combined with aggressive goals and a realistic plan on how to achieve them,” Cuomo said before signing the bill into law. He was joined by former U.S. Vice President Al Gore, who has made fighting global warming his life’s work. “We still have it within our power to grab hold of this crisis,” Gore said.

The measure Cuomo signed looks to use renewable energy sources, such as wind and solar, to generate 70% of the state’s electric power by 2030. It also includes construction of massive wind farms off the coast of Long Island, which Cuomo said would generate enough electricity to power 1 million homes.

It was unclear how Cuomo and future New York state governments planned to put the ambitious plan into action. The governor and other state officials will put together a 22-member panel to devise that.

climate change
As the federal government retreats from dealing with climate change, major parts of corporate America are moving forward anyway. Pixabay

Warning about costs

Business leaders and utility companies, however, warned residents to expect higher electric bills because of the initial investment needed to build up solar and wind capacity.

ALSO READ: Education Institutions from Across the World Declares Climate Emergency

Meanwhile, the U.S. National Oceanic and Atmospheric Administration said last month was the hottest June for the globe since at least 1880, when record-keeping began. NOAA said the planet’s average temperature was 15.9 Celsius, or 60.6 Fahrenheit.

Climate experts say global warming caused by greenhouse gases is to blame and say more records will fall before summer ends in the Northern Hemisphere. Many large U.S. cities can expect dangerously high temperatures this weekend, including Washington, where it is expected to feel like 43 degrees Celsius Friday and Saturday. (VOA)