High-resolution satellite remote sensing of provincial PM2.5 trends in China from 2001 to 2015

Lin, C. Q.1,2; Liu, G.3; Lau, A. K. H.1,2,4; Li, Y.4,5; Li, C. C.6; Fung, J. C. H.2,4,7; Lao, X. Q.8

2018-05

10.1016/j.atmosenv.2018.02.045

ATMOSPHERIC ENVIRONMENT   影响因子和分区

1352-2310

1873-2844

Given the vast territory of China, the long-term PM2.5 trends may substantially differ among the provinces. In this study, we aim to assess the provincial PM2.5 trends in China during the past few Five-Year Plan (FYP) periods. The lack of long-term PM2.5 measurements, however, makes such assessment difficult. Satellite remote sensing of PM2.5 concentration is an important step toward filling this data gap. In this study, a PM2.5 data set was built over China at a resolution of 1 km from 2001 to 2015 using satellite remote sensing. Analyses show that the national average of PM2.5 concentration increased by 0.04 mu g.m(-3).yr(-1) during the 10th FYP period (2001-2005) and started to decline by -0.65 mu g.m(-3).yr(-1) and -2.33 mu g.m(-3).yr(-1) during the 11th (2006-2010) and the 12th (2011-2015) FYP period, respectively. In addition, substantial differences in the PM2.5 trends were observed among the provinces. Provinces in the Beijing-Tianjin-Hebei (BTH) region had the largest reduction of PM2.5 concentrations during the 10th and 12th FYP period. The greatest reduction rate of PM2.5 concentration during the 10th and 12th FYP period was observed in Beijing (-3.68 mu g.m(-3).yr(-1)) and Tianjin (-6.62 mu g.m(-3).yr(-1)), respectively. In contrast, PM2.5 concentrations remained steady for provinces in eastern and southeastern China (e.g., Shanghai) during the 12th FYP period. In overall, great efforts are still required to effectively reduce the PM2.5 concentrations in future.

PM2.5 Satellite remote sensing High resolution Long-term trend Provincial scale

SCI ; EI

英语

其他

Fok Ying Tung Graduate School[NRC06/07.SC01]

Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences

Environmental Sciences ; Meteorology & Atmospheric Sciences

WOS:000430765300011

PERGAMON-ELSEVIER SCIENCE LTD

20181004878743

Satellites

Satellites:655.2

GEOSCIENCES

Web of Science

1.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Hong Kong, Hong Kong, Peoples R China
2.Hong Kong Univ Sci & Technol, Inst Environm, Hong Kong, Hong Kong, Peoples R China
3.Shanghai Inst Satellite Engn, Shanghai, Peoples R China
4.Hong Kong Univ Sci & Technol, Div Environm & Sustainabil, Hong Kong, Hong Kong, Peoples R China
5.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen, Peoples R China
6.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing, Peoples R China
7.Hong Kong Univ Sci & Technol, Dept Math, Hong Kong, Hong Kong, Peoples R China
8.Chinese Univ Hong Kong, Jockey Club Sch Publ Hlth & Primary Care, Hong Kong, Hong Kong, Peoples R China

Lin, C. Q.,Liu, G.,Lau, A. K. H.,et al. High-resolution satellite remote sensing of provincial PM2.5 trends in China from 2001 to 2015[J]. ATMOSPHERIC ENVIRONMENT,2018,180:110-116.

Lin, C. Q..,Liu, G..,Lau, A. K. H..,Li, Y..,Li, C. C..,...&Lao, X. Q..(2018).High-resolution satellite remote sensing of provincial PM2.5 trends in China from 2001 to 2015.ATMOSPHERIC ENVIRONMENT,180,110-116.

Lin, C. Q.,et al."High-resolution satellite remote sensing of provincial PM2.5 trends in China from 2001 to 2015".ATMOSPHERIC ENVIRONMENT 180(2018):110-116.