SUBSEA PERMAFROST

Background

Is it really a tipping point, and why?

Lenton (2023) characterizes Subsea Permafrost:

• With medium confidence as a NON-global scale tipping point
• With a global timescale of 10s to 100s of years

Its key drivers (positive and negative)

• Ocean warming (+)
• Sea ice loss (+)
• Water pressure reduction (+)

Its potential implications

• GHG emissions
  • Subsea permafrost stores organize matter estimated at between 550 and 3,000 GTC

Its key uncertainties and questions

How it is being monitored and evaluated

From Lenton (2024)

• Tipping element
• Tipping type
• Timescale
• Reversibility
• References
• Today’s Remote Sensing Utility in Probing Tipping Processes
• Properties Remotely Senses
• Methods of Sensing ( 1 - Vis-Shortwave 2 - Thermal Infrared 3 - LiDAR Altimerty 4 - Active microwave 5 - Passive microwave 6 - Gravimetry

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Literature Collections

• I:Methanehydrates
• I:MethaneHydratesasTippingPoint