Scientists have traced the formation and development of this year's El Ni&#241;o using a combination of satellite observations and on-site measurements.
(Scientists; have traced; the formation and development of this year's El Ni&#241) Context(Scientists have traced,List([0, 22))):(Scientists; have traced the formation and development of this year's El Ni&#241 using; a combination of satellite observations and on-site measurements)
Scientists have traced,List([0, 22))
Scientists Scientists
have traced have traced the formation and development of this year's El Ni&#241 using
the formation and development of this year's El Ni&#241
a combination of satellite observations and on-site measurements