Caption: The cosmic microwave background (CMB) dipole anisotropy in a whole-sky sky map in Mollweide projection or some similar graphical projection.
Features:
The spectral colors (violet, blue, green, yellow, orange, red) represent the low to high temperature anomaly.
The sky map is a bit dated since it shows data from the COBE probe (1989--1993). However, the 2018 value for the time-constant amplitude of the anomaly is 3.36 mK = 0.00336 K (Planck 2018 results. III. (2018, p. 22)). Superimposed on the time-constant CMB dipole anisotropy is a small time-varying anisotropy of amplitude of is 271 μK = 0.271 mK= 0.000271 K (Planck 2018 results. III. (2018, p. 21)) which is NOT represented in the figure.
Note anomaly (time-constant and time-varying) is everywhere very small compared to the (mean) CMB temperature T = 2.72548(57) (Fixsen 2009).
The translational motion of Sun gives the time-constant CMB dipole anisotropy and the translational motion Earth (which is due to the Earth's orbital motion) gives the time-varying CMB dipole anisotropy.
In analyzing the CMB intrinsic anisotropies, the CMB dipole anisotropy is subtracted off the data as a first step.
Note the Doppler effect (or shift) is covered in IAL 7: Spectra: The Doppler Effect.