Originally published on
by email@example.com (Sam Carana) at Arctic News
Sea surface temperatures on the Northern Hemisphere have been rising dramatically over the years, as illustrated by above image, indicating that the latent heat tipping point is getting crossed, while the methane hydrates tipping point could get crossed soon, depending on developments.
Heat is entering the Arctic Ocean from the south, as illustrated by the image on the right. Hot, salty water is entering the Arctic Ocean from the Atlantic Ocean and it dives underneath the ice, causing the ice to melt from below.
As the animation underneath on the right shows, freshwater is entering the Arctic Ocean due to runoff from land, i.e. rainwater from rivers, meltwater from glaciers and groundwater runoff from thawing ermafrost.
The image below, by Malcolm Light and based on Max & Lowrie (1993), from a recent post, shows vulnerable Arctic Ocean slope and deep water methane hydrates zones below 300 m depth.
Malcolm Light indicates three areas:
During April 2021, sea ice was about 160 cm thick.
The amount of energy that is consumed in the process of melting the ice is as much as it takes to heat an equivalent mass of water from zero°C to 80°C.
The image below further illustrate the danger. As the temperature of the water keeps rising, more heat will reach sediments at the seafloor of the Arctic Ocean that contain vast amounts of methane, as discussed at this page and in this post.
Ominously, methane levels reached a peak of 2901 ppb at 469 mb on May 13, 2021.
In the video below, Peter Wadhams analyses Arctic methane.
The video below is an interview with Igor Semiletov by Nick Breeze discussing methane plumes detected during 2020 field research over the East Siberian Arctic Shelf (ESAS).
• NOAA Climate at a Glance
• Danish Meteorological Institute – Arctic temperature
• Arctic sea ice – thickness and salinity – navy.mil
• CryosphereComputing – by Nico Sun
• A 4.5 km resolution Arctic Ocean simulation with the global multi-resolution model FESOM 1.4 – by Qiang Wang et al.
• Extinction by 2027- by Malcolm Light
• The Threat
• When will we die?
• A rise of 18°C or 32.4°F by 2026?
• Most Important Message Ever
• Climate Plan