DOI: 10.1016/j.atmosenv.2014.05.054
Scopus记录号: 2-s2.0-84901768646
论文题名: Black carbon and carbon monoxide over Bay of Bengal during W_ICARB: Source characteristics
作者: Girach I ; A ; , Nair V ; S ; , Babu S ; S ; , Nair P ; R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94 起始页码: 508
结束页码: 517
语种: 英语
英文关键词: Black carbon
; Carbon monoxide
; Emission flux
; Humidity effect on BC
; Source characteristics
Scopus关键词: Aerosols
; Atmospheric thermodynamics
; Mixing
; Black carbon
; Emission fluxes
; Humidity effects
; Indo-Gangetic Plains
; Mass concentration
; Positive correlations
; Radiation budget
; Source characteristics
; Carbon monoxide
; black carbon
; carbon monoxide
; aerosol
; biomass burning
; black carbon
; carbon monoxide
; emission inventory
; pollutant removal
; pollutant source
; relative humidity
; article
; bay
; bay of Bengal
; biomass
; carbon footprint
; dilution
; geographic distribution
; humidity
; India
; marine environment
; meteorology
; oceanic regions
; pre monsoon
; priority journal
; season
; ship
; Southeast Asia
; spatiotemporal analysis
; water vapor
; wet deposition
; winter
; Bay of Bengal
; Indian Ocean
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 ship borne measurements of near-surface black carbon (BC) and carbon monoxide (CO) were carried out over Bay of Bengal (BoB) during the winter period of 2009 under W_ICARB, the second phase of 'Integrated Campaign for Aerosols, gases and Radiation Budget (ICARB)'. The CO mixing ratio and BC mass concentration varied in the ranges of 80-480ppbv and 75-10,000ngm-3, respectively over this marine region. The BC and CO showed similar variations over northern BoB where airmass from Indo-Gangetic Plain(IGP) region prevailed during the observations period leading to a very strong positive correlation. The association of BC and CO was poor over the eastern and southern part of BoB could be due to the removal of BC aerosols by rain and/or processes of dilution and mixing while transported over to BoB. The highest value of CO observed over eastern BoB was partially due to biomass burning over East Asia. The BC/CO ratio for IGP airmass found to be 20.3ngm-3ppb-1 and ~16ngm-3ppb-1 during winter and pre-monsoon, respectively which indicate the role of biomass burning as the source of BC over the region. Based on the emission flux of CO from various inventories and observed BC/CO ratios during pre-monsoon and winter, the BC emission for India is estimated to be in the range of 0.78-1.23Tgyear-1. The analysis of scavenging of BC revealed the loss rate of BC due to relative humidity 0.39±0.08ngm-3ppb-1 RH (%)-1 over northern BoB and 0.53±0.04ngm-3ppb-1 RH (%)-1 over the southern-BoB during winter. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80954
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Space Physics Laboratory, Vikram Sarabhai Space Centre, Thiruvananthapuram, Kerala 695 022, India
Recommended Citation:
Girach I,A,, Nair V,et al. Black carbon and carbon monoxide over Bay of Bengal during W_ICARB: Source characteristics[J]. Atmospheric Environment,2014-01-01,94