Below are two images produced with NASA GES DISC Giovanni data system, showing methane levels for early April 2012.
The top image shows where methane levels exceed 1.9 parts per million.
The image below is a polar projection; note the different scale on the right, which is the default one that is automatically calculated and exceeds 2 parts per million.
Below the same image as the above one, this time with the same custom scale as the top image.
Below is an animation showing the recent surface temperature anomalies
This animation is a 774 kb file and may take some time to fully load.
Methane levels at Mauna Loa, Hawaii (directly below) and Barrow, Alaska (further down below).
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