Click here to access article from Climate Nexus which "is a sponsored project of Rockefeller Philanthropy Advisors".
I am not sure who the scientific organizations this article referred to, but some scientists clearly expected this surge because of increasing temperatures in the polar regions and the melting of the permafrost. I've posted at least six articles with scientific documentation that scientists, based on research, expected the increase in methane level in the past five years: 3-5°C temperature rise is now ‘locked-in’ for the Arctic, The climate emergency with Dahr Jamail, Arctic thaw imperils climate goals, Climate change in the Anthropocene: An unstoppable drive to Hothouse Earth?, Researchers Tally the Global Cost of Melting Permafrost, and Thawing Permafrost Will ‘Seep, Not Explode’ CO2.
Some scientists, particularly those who support the findings of biologist and generalist Guy McPherson, argue that it is already too late to avoid catastrophic climate destabilization: Support for action surges, majority say we face climate emergency, Hope is a Mistake and a Lie, David Suzuki & GM [Guy McPherson]- Abrupt Climate Change - Compassion in the Face of Death, No Surrender, and Two articles written by highly educated scholars illustrates the power of capitalist ideology.