Universität zu Köln

Shao, Yaping ORCID: 0000-0002-2041-5479, Ulbrich, Sven and Chen, Dehui (2018). Air pumping for alleviation of heavy smog in Beijing. Sci. China-Earth Sci., 61 (7). S. 973 - 980. BEIJING: SCIENCE PRESS. ISSN 1869-1897

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Abstract

Beijing often suffers under heavy smog. During such events which occur mostly in autumn and winter, people are desperate for fresh air. The formation of heavy smog is due to foremost human induced air pollution, but geographic and meteorological conditions, especially below a surface inversion, play an important role. We propose to destroy the inversion by pumping air from above the inversion layer to the surface layer to alleviate the severity of the smog. While long-term air quality improvement depends on the reduction of air pollution emission, air pumping may provide relief in the interim for the Beijing citizens. We estimate that an air pumping at a rate 2x10(7) m(3) s(-1) can lead to significantly improved air quality in Beijing, due to (1) direct clean air input; (2) increased instability and vertical mixing and (3) a positive radiation-mixing feedback. The pumping requires an energy input of 10 GW, comparable with the energy consumption in Beijing for air conditioning in summer. We propose to use wind energy from Inner Mongolia for the pumping, which has currently an installed wind energy capacity of 70 GW.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Shao, Yaping UNSPECIFIED orcid.org/0000-0002-2041-5479 UNSPECIFIED Ulbrich, Sven UNSPECIFIED UNSPECIFIED UNSPECIFIED Chen, Dehui UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-181668
DOI:	10.1007/s11430-017-9176-8
Journal or Publication Title:	Sci. China-Earth Sci.
Volume:	61
Number:	7
Page Range:	S. 973 - 980
Date:	2018
Publisher:	SCIENCE PRESS
Place of Publication:	BEIJING
ISSN:	1869-1897
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Geosciences > Institute for Geophysics and Meteorology
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language WINTER; CHINA Multiple languages Geosciences, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/18166