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Figure 11 | Earth, Planets and Space

Figure 11

From: In-flight performance of the Absolute Scalar Magnetometer vector mode on board the Swarm satellites

Figure 11

Correlation of external parameters with ASM vector scale factors. To illustrate the possible influence of external factors on the ASM vector parameters of Swarm Alpha (here ASM FM1A X-axis vector scale factor in nT, reproduced in the upper graph), the second and third graphs respectively display the evolution of the sine of the Sun illumination angle along orbit track in the ASM reference frame (potential origin of the seasonal effect) and of the in-flight ASM heater duty cycle in percent (testifying for the evolution in the thermal conditions witnessed by the ASM sensor) from 1 January 2014 to 31 December 2014.

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