Next Article in Journal
Triple-Pair Constellation Configurations for Temporal Gravity Field Retrieval
Next Article in Special Issue
Assessment of Sampling Effects on Various Satellite-Derived Integrated Water Vapor Datasets Using GPS Measurements in Germany as Reference
Previous Article in Journal
Deformation Analysis Using B-Spline Surface with Correlated Terrestrial Laser Scanner Observations—A Bridge Under Load
Previous Article in Special Issue
Evaluation of Environmental Moisture from NWP Models with Measurements from Advanced Geostationary Satellite Imager—A Case Study
Article

Satellite-Observed Variations and Trends in Carbon Monoxide over Asia and Their Sensitivities to Biomass Burning

1
International Institute for Earth System Science, Nanjing University, Nanjing 210023, China
2
School of Atmospheric Sciences, Nanjing University, Nanjing 210023, China
3
Department of Geography and Planning, University of Toronto, Ontario M5S 3G3, Canada
4
School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
*
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(5), 830; https://doi.org/10.3390/rs12050830
Received: 14 February 2020 / Accepted: 27 February 2020 / Published: 4 March 2020
(This article belongs to the Special Issue Remote Sensing of Atmospheric Components and Water Vapor)
As the carbon monoxide (CO) total column over Asia is among the highest in the world, it is important to characterize its variations in space and time. Using Measurements of Pollution in the Troposphere (MOPITT) and Atmospheric InfraRed Sounder (AIRS) satellite data, the variations and trends in CO total column over Asia and its seven subregions during 2003–2017 are investigated in this study. The CO total column in Asia is higher in spring and winter than in summer and autumn. The seasonal maximum and minimum are in spring and summer respectively in the regional mean over Asia, varying between land and oceans, as well as among the subregions. The CO total column in Asia shows strong interannual variation, with a regional mean coefficient of variation of 5.8% in MOPITT data. From 2003 to 2017, the annual mean of CO total column over Asia decreased significantly at a rate of (0.58 ± 0.15)% per year (or −(0.11 ± 0.03) × 1017 molecules cm−2 per year) in MOPITT data, resulting from significant CO decreases in winter, summer, and spring. In most of the subregions, significant decreasing trends in CO total column are also observed, more obviously over areas with high CO total column, including eastern regions of China and the Sichuan Basin. The regional decreasing trends in these areas are over 1% per year. Over the entire Asia, and in fire-prone subregions including South Siberia, Indo-China Peninsula, and Indonesia, we found significant correlations between the MOPITT CO total column and the fire counts from the Moderate Resolution Imaging Spectroradiometer (MODIS). The variations in MODIS fire counts may explain 58%, 60%, 36%, and 71% of the interannual variation in CO total column in Asia and these three subregions, respectively. Over different land cover types, the variations in biomass burning may explain 62%, 52%, and 31% of the interannual variation in CO total column, respectively, over the forest, grassland, and shrubland in Asia. Extremes in CO total column in Asia can be largely explained by the extreme fire events, such as the fires over Siberia in 2003 and 2012 and over Indonesia in 2006 and 2015. The significant decreasing trends in MODIS fire counts inside and outside Asia suggest that global biomass burning may be a driver for the decreasing trend in CO total column in Asia, especially in spring. In general, the variations and trends in CO total column over Asia detected by AIRS are similar to but smaller than those by MOPITT. The two datasets show similar spatial and temporal variations in CO total column over Asia, with correlation coefficients of 0.86–0.98 in the annual means. This study shows that the interannual variation in atmospheric CO in Asia is sensitive to biomass burning, while the decreasing trend in atmospheric CO over Asia coincides with the decreasing trend in MODIS fire counts from 2003 to 2017. View Full-Text
Keywords: carbon monoxide; MOPITT; AIRS; biomass burning; trend; Asia; interannual variation; MODIS fire data; GFEDs carbon monoxide; MOPITT; AIRS; biomass burning; trend; Asia; interannual variation; MODIS fire data; GFEDs
Show Figures

Graphical abstract

MDPI and ACS Style

Zhang, X.; Liu, J.; Han, H.; Zhang, Y.; Jiang, Z.; Wang, H.; Meng, L.; Li, Y.C.; Liu, Y. Satellite-Observed Variations and Trends in Carbon Monoxide over Asia and Their Sensitivities to Biomass Burning. Remote Sens. 2020, 12, 830. https://doi.org/10.3390/rs12050830

AMA Style

Zhang X, Liu J, Han H, Zhang Y, Jiang Z, Wang H, Meng L, Li YC, Liu Y. Satellite-Observed Variations and Trends in Carbon Monoxide over Asia and Their Sensitivities to Biomass Burning. Remote Sensing. 2020; 12(5):830. https://doi.org/10.3390/rs12050830

Chicago/Turabian Style

Zhang, Xun; Liu, Jane; Han, Han; Zhang, Yongguang; Jiang, Zhe; Wang, Haikun; Meng, Lingyun; Li, Yi C.; Liu, Yi. 2020. "Satellite-Observed Variations and Trends in Carbon Monoxide over Asia and Their Sensitivities to Biomass Burning" Remote Sens. 12, no. 5: 830. https://doi.org/10.3390/rs12050830

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop