Connect with us

News

Emissions Could Add 15 Inches to 2100 Sea Level Rise, NASA-Led Study Finds

Published

on

GREENBELT, Md. — An international effort that brought together more than 60 ice, ocean and atmosphere scientists from three dozen international institutions has generated new estimates of how much of an impact Earth’s melting ice sheets could have on global sea levels by 2100.

If greenhouse gas emissions continue apace, Greenland and Antarctica’s ice sheets could together contribute more than 15 inches (38 centimeters) of global sea level rise – and that’s beyond the amount that has already been set in motion by Earth’s warming climate.

Results from this effort are in line with projections in the Intergovernmental Panel on Climate Change’s (IPCC) 2019 Special Report on Oceans and the Cryosphere. Meltwater from ice sheets contribute about a third of the total global sea level rise. The IPCC report projected that Greenland would contribute 3.1 to 10.6 inches (8 to 27 cm) to global sea level rise between 2000-2100 and Antarctica could contribute 1.2 to 11 inches (3 to 28 cm).

These new results, published this week in a special issue of the journal The Cryosphere, come from the Ice Sheet Model Intercomparison Project (ISMIP6) led by NASA’s Goddard Space Flight Center in Greenbelt, Maryland. The study is one of many efforts scientists are involved in to project the impact of a warming climate on melting ice sheets, understand its causes and track sea level rise.

“One of the biggest uncertainties when it comes to how much sea level will rise in the future is how much the ice sheets will contribute,” said project leader and ice scientist Sophie Nowicki, now at the University at Buffalo, and formerly at NASA Goddard. “And how much the ice sheets contribute is really dependent on what the climate will do.”

“The strength of ISMIP6 was to bring together most of the ice sheet modeling groups around the world, and then connect with other communities of ocean and atmospheric modelers as well, to better understand what could happen to the ice sheets,” said Heiko Goelzer, a scientist from Utrecht University in the Netherlands, now at NORCE Norwegian Research Centre in Norway. Goelzer led the Greenland ice sheet ISMIP6 effort.

With warming air temperatures melting the surface of the ice sheet, and warming ocean temperatures causing ocean-terminating glaciers to retreat, Greenland’s ice sheet is a significant contributor to sea level rise. The ISMIP6 team investigated two different scenarios the IPCC has set for future climate to predict sea level rise between 2015 and 2100: one with carbon emissions increasing rapidly and another with lower emissions.

In the high emissions scenario, they found that the Greenland ice sheet would lead to an additional global sea level rise of about 3.5 inches (9 cm) by 2100. In the lower emissions scenario, the loss from the ice sheet would raise global sea level by about 1.3 inches (3 cm). This is beyond what is already destined to be lost from the ice sheet due to warming temperatures between pre-industrial times and now; previous studies have estimated that ‘locked in’ contribution to global sea level rise by 2100 to be about a quarter-inch (6 millimeters) for the Greenland ice sheet. – NASA’s Goddard Space Flight Center



Continue Reading
Advertisement
Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

News

Ranawaka accuses govt. of using JVP cadres and police to suppress political opponents

Published

on

… reminds AKD led over 560 protests during Yahapalanaya

Former Yahapalana Minister and United Republican Front (URF) leader Patali Champika Ranawaka yesterday (19) alleged that the JVP, which carried out over 560 protests during the 2015-2019 period, was now bent on preventing the Opposition from exercising its democratic right to protest.

Recalling the declaration made by the JVP at the height of the violent protest campaign in July 2022 that it would set the Parliament ablaze, the former parliamentarian lashed out at the JVP-led administration for using the police excessively to curb political opposition. Ranawaka said this while addressing the media at the former President Ranil Wickremesinghe’s Flower Road Office .

Commenting on the protest campaign launched by the Maha Sangha, demanding presidential pardon for General Secretary of the Bodu Bala Sena (BBS) Ven. Galagotaatte Gnanasara, the ex-Colombo District lawmaker alleged that President Anura Kumara Dissanayake used a combination of police, investigative units and JVP cadres to break up the monks’ protest. The government went to the extent of compelling the JVP/NPP-run Colombo Municipal Council (CMC) to deprive the peaceful protesters of basic toilet facilities, he alleged.

The government’s actions proved that only those with prior approval from JVP Pelawatte headquarters could launch protests in Colombo, its suburbs or in the provinces. The police have become a political tool in the hands of the JVP, the ex-Minister said. (SF)

Continue Reading

News

Six killed as speeding bulker crashes into vehicles, shop in Akurana

Published

on

By SK Samaranayake

Six people were killed and seven others injured when a speeding bulker lorry carrying cement and concrete ploughed into several vehicles and a shop on the Kandy-Jaffna A9 road at Kurugoda, Akurana, yesterday (19).

Four of the victims, two women and two men, died on the spot in the accident which occurred around 10.30 am, according to Alawathugoda Police.

Police said the bulker, travelling at high speed from the Matale direction, collided with three three-wheelers, two motorcycles and two lorries before veering off the road and crashing into a commercial establishment.

Five of the injured were rushed to the National Hospital of Kandy, where hospital sources said two remained in critical condition.

The bodies of the four victims were placed at the Akurana Hospital, where two others, who suffered minor injuries, were also receiving treatment.

The driver of the bulker was arrested by the Alawathugoda Police Traffic Division and is to be produced before court.

Investigations are being conducted under the supervision of Central Province Senior DIG Lalith Pathinayake.

Continue Reading

News

Prof. Peiris, summoned by CIABOC, appeals for Ven. Gnanasara’s release

Published

on

G.L. Peiris

By Shamindra Ferdinando

owledging that there had been an administrative lapse on the part of the President’s Office in 2019 when Maithripala Sirisena granted presidential pardon to Ven. Gnanasara Thera, Convener of Janathawadi Joint Opposition Prof. G.L. Peiris yesterday (19) urged President Anura Kumara Dissanayake to rectify whatever those shortcomings and release the General Secretary of Bodu Bala Sena.

Addressing the media at the former President Ranil Wickrekmesinghe’s Flower Road Office, Prof. Peiris emphasized that it was not fair to hold Ven. Gnanasara accountable for lapse or technical fault of others at the Presidential Secretariat during President Sirisena’s tenure.

Prof. Peiris was flanked by UNP Chairman Wajira Abeywardena and United Republican Front (URF) leader Patali Champika Ranawaka.

The fresh appeal was made on behalf of Ven. Gnanasara in the wake of President Dissanayake and JVP heavyweight Anura Kumara Dissanayake ruling out fresh presidential pardon for the monk. Minister Lal Kantha declared that the government couldn’t under any circumstances meet the continuing monks’ protest demanding Ven. Gnanasara’s release. President Dissanayake dismissed repeated appeals for Ven. Gnanasara’s release when he addressed the NPP really in Badulla.

Sirisena granted presidential pardon in May 2019 even before he completed a year of his six-year term of rigorous imprisonment for contempt of court during proceedings of the media personality Prageeth Ekneligoda’s 2010 January disappearance in the Homagama Magistrate’s court.

At the onset of the regular weekly briefing, Prof. Peiris said that he would report to the Commission to Investigate Allegations of Bribery or Corruption (CIABOC) today (20) morning as requested by the commission. “The CIABOC wanted to record my statement regarding a meeting I chaired at the ministry after the conclusion of the war in 2009 pertaining to an ongoing investigation.”

Commenting further on the imprisonment of Ven. Gnanasara, the former parliamentarian said that President Sirisena intervened following a spate of requests made on behalf of BBS General Secretary by the Mahanayakes, Anunayakes and other Maha Sangha.

The Supreme Court on 10 September, 2026 rescinded the presidential pardon granted in late May 2019.

Continue Reading

Trending