An Unwanted Guest - El Niño and Africa in 2016

El Niño is the largely unwanted Christmas gift - a warming of the tropical Pacific causing drought and floods that will peak at the end of this month, but will impact weather systems around the globe into 2016.

This year's El Niño has been steadily gaining strength since March. It's likely to be one of the most extreme events of this nature yet seen, with the UN's emergency aid coordination body, OCHA, warning that "millions will be impacted".