Interannual variation of global net radiation flux as measured from space

What is it about?

The Earth's energy imbalance is an indicator about the change of climate system. However it remains a challenge to detect the tiny change in Earth's energy imbalance from space. In this paper, a new independent measurements are presented, which has detected the interannual variation in global net radiation flux from one experiment. It provides a new insight to track the Earth's energy imbalance from space.

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Why is it important?

The interannual variation in global net radiation flux derived from PICARD-BOS measurements are consistent with the variation find from CERES, which improves the confidence level on this variable. It furthermore shows the space measured interannaul change in global net radiation flux are more or less following the ENSO circulation. But It could not be 100% explained by ENSO itself, in order to understand this variation, the energy exchange inside the atmosphere and ocean need to be studied further.