WMO Approves Global Greenhouse Gas Watch [UPSC Current Affairs]

The World Meteorological Organisation (WMO) reports that the World Meteorological Congress approved a global tracker for greenhouse gas emissions.

WMO approves global greenhouse gas watch: 

• The World Meteorological Congress has approved a new greenhouse gas (GHG) monitoring initiative.
• The new global GHG watch will fill critical information gaps and provide an integrated and operational framework. The framework will bring all space-based and surface-based observing systems, as well as modelling and data assimilation capabilities, under one roof.
• The GHG watch will consist of four main components:
  • A comprehensive, sustained, global set of surface-based and satellite-based observations of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) concentrations, total column amounts, partial column amounts, vertical profiles and fluxes and supporting meteorological, oceanic, and terrestrial variables, internationally exchanged as rapidly as possible, pending capabilities and agreements with the system operators;
  • Prior estimates of the GHG emissions based on activity data and process-based models;
  • A set of global high-resolution Earth System models representing GHG cycles;
  • Associated with the models, data assimilation systems that optimally combine the observations with model calculations to generate products of higher accuracy.

Image: GHG TRACKER

SOURCE: wmo

Stats related to Greenhouse gases: 

• Between 1990 and 2021, the warming effect on our climate (known as radiative forcing) by long-lived greenhouse gases rose by nearly 50%, with carbon dioxide accounting for about 80% of this increase.
• WMO measures atmospheric concentrations of greenhouse gases – what remains in the atmosphere after gases are absorbed by sinks like the ocean and biosphere.

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