Articles | Volume 17, issue 3
Research article
02 Feb 2017
Research article |  | 02 Feb 2017

Understanding severe winter haze events in the North China Plain in 2014: roles of climate anomalies

Zhicong Yin, Huijun Wang, and Huopo Chen

Data sets

China ground observation data sets CMA

CPC Monthly EA/WR and WP Index CPC

PBLH data sets ERA-Interim

Hadley Centre Sea Ice and Sea Surface Temperature data sets HadISST

NCEP/NCAR Reanalysis data sets NCEP/NCAR

NOAA Extended Reconstructed Sea Surface Temperature (SST) V4 data sets NOAA

Short summary
The number of winter haze days over the north-central North China Plain in 2014 was largest in the past 30 years. With the anticyclone circulation over North China taken as an intermediate, the positive phases of the east Atlantic/west Russia, western Pacific, and Eurasian patterns led to a larger number of haze days in 2014. The related external forcing included preceding autumn Arctic sea ice, winter and pre-autumn surface temperature, and pre-autumn sea surface temperature in the Pacific.
Final-revised paper