Thick haze sweeps through North-East of China

Sentinel-3 OLCI FR acquired on 28 October 2018 at 02:24:45 UTC
Sentinel-3 OLCI FR acquired on 01 November 2018 at 02:32:14 UTC
Sentinel-3 OLCI FR acquired on 02 November 2018 from 02:03:03 to 02:06:03 UTC
Sentinel-3 OLCI FR acquired on 03 November 2018 from 01:36:52 to 01:39:52 UTC
Author(s): Sentinel Vision team, VisioTerra, France -
Keyword(s): Atmosphere, air pollution, air quality, fog, smog, land, urban growth, crop burning, public health, energy, China.
Fig. 1 - S3 OLCI (28.10.2018) - 10,6,3 natural colour - Taihang & Yan Mountains on a clear day; they separate Loess plateau from North plain.
With the return of cold, many Chinese rely on wood or coal to produce heat. With concomitant crop residue burning, it produces a suffocating haze.
Fig. 2 - 01.11.2018 - 1st November, a thick fog followed the range toward north-east, reaching Beijing.
Fig. 3 - 02.11.2018 - It considerably thickened the following day, spread through North China Plain & approached Manchuria.
Fig. 4 - 03.11.2018 - One day after, it reached Manchurian Plain aka Northeast Plain that was still clear before that.