It seems far more likely that volcanic activity and the natural ice age cycles are causing the current, temporary warming trend. (realclimate.org)
Because black carbon is the most heavily light - absorbing component of particulate matter, it can cause temporary warming in the region by absorbing sunlight. (newatlas.com)
To the extent some warming influence may have remained after the El Nino, it's evidently far smaller than the total temporary warming the El Nino produced which subsequently faded away. (julesandjames.blogspot.ru)