Snowmobile party crossing blue ice of Balchen Glacier,
Marie Byrd Land, West Antarctica. Photo © Bruce Luyendyk |
Have the Antarctic Ice Sheets reached the Point of No Return? My last entry was an excerpt from my memoir about flying past the Point of No Return (AKA Point of Safe Return) in route from Christchurch to McMurdo Station, Antarctica. This entry is about an entirely different PNR, that where the stability of the West Antarctic Ice Sheet (WAIS) is lost.
Two research studies published in the last few weeks have
confirmed what has been feared; the PNR for stability of the ice sheet has been
passed.
The WAIS covers the subcontinent of West Antarctica in
thousands of feet of ice.
About the area of Mexico, if the WAIS melted entirely sea level would rise an average three meters around the world (ten feet).
About the area of Mexico, if the WAIS melted entirely sea level would rise an average three meters around the world (ten feet).