Characterization of chemical properties of atmospheric aerosols over Anmyeon (South Korea), a super site under Global Atmosphere Watch

Park, Sung-Hwa; Panicker, A. S.; Lee, Dong‐In; Jung, Woonseon; Jang, Sang-Min; Jang, Myoung-Uoon; Kim, Dongchul; Kim, Yu-Won; Jeong, Harrison

doi:10.1007/s10874-011-9205-2

Cited by 20 publications

(12 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the pre-monsoon period, the AHR was around 23% higher than the mean AHR value. This enhanced atmospheric heating and surface cooling induced by BC might reduce convection and cloud formations and influence cloud cover (Satheesh et al, 2000;Park et al, 2010;Koch and Del Genio, 2010).…”

Section: Radiative Impact Due To Bc Aerosol On Regional Climatementioning

confidence: 99%

Significant cooling effect on the surface due to soot particles over Brahmaputra River Valley region, India: An impact on regional climate

Tiwari

Kumar

Tunved

et al. 2016

Science of The Total Environment

View full text Add to dashboard Cite

Black carbon (BC) is an important atmospheric aerosol constituent that affects the climate by absorbing (directly) the sunlight and modifying cloud characteristics (indirectly). Here, we present first time yearlong measurements of BC and carbon monoxide (CO) from an urban location of Guwahati located in the Brahmaputra River valley (BRV) in the northeast region of India from 1st July 2013 to 30th June 2014. Daily BC concentrations varied within the range of 2.86 to 11.56μgm(-3) with an annual average of 7.17±1.89μgm(-3), while, CO varied from 0.19 to 1.20ppm with a mean value of 0.51±0.19ppm during the study period. The concentrations of BC (8.37μgm(-3)) and CO (0.67ppm) were ~39% and ~55% higher during the dry months (October to March) than the wet months (April to September) suggesting that seasonal changes in meteorology and emission sources play an important role in controlling these species. The seasonal ΔBC/ΔCO ratios were highest (lowest) in the pre-monsoon (winter) 18.1±1.4μgm(-3)ppmv(-1) (12.6±2.2μgm(-3)ppmv(-1)) which indicate the combustion of biofuel/biomass as well as direct emissions from fossil fuel during the pre-monsoon season. The annual BC emission was estimated to be 2.72Gg in and around Guwahati which is about 44% lower than the mega city 'Delhi' (4.86Gg). During the study period, the annual mean radiative forcing (RF) at the top of the atmosphere (TOA) for clear skies of BC was +9.5Wm(-2), however, the RF value at the surface (SFC) was -21.1Wm(-2) which indicates the net warming and cooling effects, respectively. The highest RF at SFC was in the month of April (-30Wm(-2)) which is coincident with the highest BC mass level. The BC atmospheric radiative forcing (ARF) was +30.16 (annual mean) Wm(-2) varying from +23.1 to +43.8Wm(-2). The annual mean atmospheric heating rate (AHR) due to the BC aerosols was 0.86Kday(-1) indicates the enhancement in radiation effect over the study region. The Weather Research and Forecasting model coupled with Chemistry (WRF-Chem) captured the seasonal cycle of observed BC fairly well but underestimated the observed BC during the month of May-August. Model results show that BC at Guwahati is controlled mainly by anthropogenic emissions except during the pre-monsoon season when open biomass burning also makes a similar contribution.

show abstract

Section: Radiative Impact Due To Bc Aerosol On Regional Climatementioning

confidence: 99%

Significant cooling effect on the surface due to soot particles over Brahmaputra River Valley region, India: An impact on regional climate

Tiwari

Kumar

Tunved

et al. 2016

Science of The Total Environment

View full text Add to dashboard Cite

show abstract

“…OC generally is a scattering aerosol species and it also acts as a potential cloud condensation nuclei (Saxena et al, 1995;Sahu et al, 2011;Novakov and Penner, 1993). However EC is a strong absorbent of solar radiation and warms the earth atmosphere system (Panicker et al, 2013a;Park et al, 2010). BC (EC) is found to be a global climate forcing agent, contributing significantly to positive radiative and thus enhancing global warming (IPCC., 2013).…”

Section: Introductionmentioning

confidence: 99%

Characterization of Particulate Matter and Carbonaceous Aerosol over Two Urban Environments in Northern India

Panicker

Ali

Beig

et al. 2015

Aerosol Air Qual. Res.

View full text Add to dashboard Cite

Monitoring and simultaneous sampling of Particulate matter (PM 10 and PM 2.5 ) was carried out for the first time over two urban sites in Northern India (Jabalpur and Udaipur) during December 2010-November 2012 (up to August 2012 over Udaipur). The samples of PM 2.5 were analyzed for elemental carbon (EC) and organic carbon (OC) using advanced DRI Thermal optical carbon Analyzer. The monthly mean PM 10 values were as high as 149 ± 44 µg m -3 over Jabalpur (JBL) and 171 ± 42.2 µg m -3 over Udaipur (UDPR). PM 2.5 mass over JBL varied between 25-79 µg m -3 and over UDPR between 24-82 µg m -3. The monthly mean OC concentration varied from 12.5 ± 7.3 µg m -3 to 28.4 ± 10.7 µg m -3 over JBL and from 7.8 ± 2.9 to 39.7 ± 11.6 µg m -3 over UDPR. The variation of monthly mean EC concentration was from 3.9-10.3 µg m -3 over JBL and from 3-10.9 µg m -3 over UDPR. The contribution of TC to PM 2.5 was in the range of 31-75% over JBL and 30-83% over UDPR. The EC showed higher concentration in winter and minimal values in monsoon. The OC/EC ratio showed low variation over JBL compared to that over UDPR suggesting spectrum of sources responsible for EC and OC components over UDPR. Formation of secondary organic carbon (SOC) was also recognized as a potential component altering OC/EC ratio. Up on extracting the sub fractions, it is found that OC2 and OC3 are the major component over both the sites contributing up to 51% to the total OC in different months. EC1 (EC component derived at 580°C) was found to be the major EC component contributing up to 79% over the sites.

show abstract

“…The enhanced local land heating due to excessive solar radiation leading to strong transmission, resulting in upwelling of surface particles could be another reason for increased AOD values during pre-monsoon. Despite of high solar radiation the reduction in AOD during monsoon season compared to pre-monsoon could be correlated with rainout and washout of aerosols during monsoon season and associated rainfall, which continue during June-July months [12], [16]. The AOD found to be further lower (0.28) in post-monsoon season.…”

Section: Monthly Mean Variations Of Aod Fmf and Aementioning

confidence: 82%

An observational study of aerosol optical properties and their relationships with meteorological parameters over Bangladesh

Mamun¹

2014

IOSRJAGG

View full text Add to dashboard Cite

Characterization of chemical properties of atmospheric aerosols over Anmyeon (South Korea), a super site under Global Atmosphere Watch

Cited by 20 publications

References 22 publications

Significant cooling effect on the surface due to soot particles over Brahmaputra River Valley region, India: An impact on regional climate

Significant cooling effect on the surface due to soot particles over Brahmaputra River Valley region, India: An impact on regional climate

Characterization of Particulate Matter and Carbonaceous Aerosol over Two Urban Environments in Northern India

An observational study of aerosol optical properties and their relationships with meteorological parameters over Bangladesh

Contact Info

Product

Resources

About