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Climate Diagnostics Bulletin
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  Tropical Highlights

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  Appendix 1: Outside Contributions


JANUARY 2023

FIGURE T31.  Pressure-latitude section of the mean (top) and anomalous (bottom) zonal wind (m s-1) and divergent circulation averaged over the west Pacific sector (120E-170E). The divergent circulation is represented by vectors of combined pressure vertical velocity and the divergent component of the meridional wind. Red shading and solid contours denote a westerly (top) or anomalous westerly (bottom) zonal wind. Blue shading and dashed contours denote an easterly (top) or anomalous easterly (bottom) zonal wind. Anomalies are departures from the 1991-2020 base period monthly means.


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