DOI: 10.1016/j.atmosenv.2017.07.044
Scopus记录号: 2-s2.0-85026545063
论文题名: SCIAMACHY observed changes in the column mixing ratio of methane over the Indian region and a comparison with global scenario
作者: Kavitha M ; , Nair P ; R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 166 起始页码: 454
结束页码: 466
语种: 英语
英文关键词: Anomaly
; Methane
; SCIAMACHY
; Seasonal pattern
Scopus关键词: Agriculture
; Boundary layers
; Gas emissions
; Mixing
; Spectrometers
; Anomaly
; Long range transport
; Mining activities
; Scanning imaging absorption spectrometer for atmospheric chartography
; SCIAMACHY
; Seasonal patterns
; Sensor degradation
; Vertical distributions
; Methane
; methane
; natural gas
; petroleum
; agricultural emission
; boundary layer
; cultivation
; global perspective
; growth rate
; livestock
; long range transport
; methane
; mixing ratio
; rice
; SCIAMACHY
; seasonal variation
; vertical distribution
; absorption spectrophotometry
; altitude
; Article
; biomass
; boundary layer
; energy
; India
; latitude
; livestock
; mining
; priority journal
; seasonal variation
; surface property
; water vapor
; wetland
; India
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: The trends in the column averaged mixing ratio of methane (XCH4) over the Indian region during 2003–2009 periods were studied using the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) observations. Considering the sensor degradation, the trends were analyzed for 2003 to 2005 and 2006 to 2009 separately. Over India, the trend in XCH4 varied from 5.2 to 7.6 ppb per year after 2005, exhibiting a 2–4 fold increase compared to 2003–2005. While the increase over Northern parts of India is attributed to increasing CH4 emissions from rice cultivation and livestock population, those over Southern regions are due to increased oil and gas mining activities. A comparison of these trends with those over most of the hotspot regions over the globe revealed that those regions exhibited higher growth rates of XCH4 compared to Indian regions during 2006–2009. The seasonal patterns of XCH4 and near-surface CH4 at selected global network stations were also examined in detail. This analysis revealed hemispheric difference and varying seasonal patterns suggesting the inhomogeneous vertical distribution of CH4. The observed differences in the seasonal patterns of near-surface CH4 and XCH4 suggest that the surface emissions need not replicate at higher altitudes due to long-range transport, the boundary layer meteorology and lifetime of CH4 in the atmosphere. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82610
Appears in Collections: 气候变化事实与影响
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作者单位: Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram, India
Recommended Citation:
Kavitha M,, Nair P,R. SCIAMACHY observed changes in the column mixing ratio of methane over the Indian region and a comparison with global scenario[J]. Atmospheric Environment,2017-01-01,166