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Quantifying local-scale dust emission from the Arabian Red Sea coastal plain
Copernicus GmbH - Tập 17 Số 2 - Trang 993-1015
Anatolii Anisimov, Weichun Tao, Georgiy Stenchikov, Stoitchko Kalenderski, P. Jish Prakash, Zong‐Liang Yang, Mingjie Shi
Abstract. Dust plumes emitted from the narrow Arabian Red Sea coastal plain are often observed on satellite images and felt in local population centers. Despite its relatively small area, the coastal plain could be a significant dust source; however, its effect is not well quantified as it is not well approximated in global or even regional models. In addition, because of close proximity t...... hiện toàn bộ
Long-term MAX-DOAS measurements of NO<sub>2</sub>, HCHO, and aerosols and evaluation of corresponding satellite data products over Mohali in the Indo-Gangetic Plain
Copernicus GmbH - Tập 20 Số 22 - Trang 14183-14235
Vinod Kumar, Steffen Beirle, Steffen Dörner, Abhishek Kumar Mishra, Sebastian Donner, Yang Wang, Vinayak Sinha, Thomas Wagner
Abstract. We present comprehensive long-term ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements of aerosols, nitrogen dioxide (NO2), and formaldehyde (HCHO) from Mohali (30.667∘ N, 76.739∘ E; ∼310 m above mean sea level), located in the densely populated Indo-Gangetic Plain (IGP) of India. We investigate the temporal variation in tropospheric colum...... hiện toàn bộ
Assessment of fire emission inventories during the South American Biomass Burning Analysis (SAMBBA) experiment
Copernicus GmbH - Tập 16 Số 11 - Trang 6961-6975
Gabriel Pereira, Ricardo Almeida de Siqueira, Nilton E. Rosário, K. Longo, Saulo R. Freitas, Francielle S. Cardozo, Johannes W. Kaiser, Martin J. Wooster
Abstract. Fires associated with land use and land cover changes release large amounts of aerosols and trace gases into the atmosphere. Although several inventories of biomass burning emissions cover Brazil, there are still considerable uncertainties and differences among them. While most fire emission inventories utilize the parameters of burned area, vegetation fuel load, emission factors...... hiện toàn bộ
Source apportionment of fine organic aerosol in Mexico City during the MILAGRO experiment 2006
Copernicus GmbH - Tập 8 Số 5 - Trang 1249-1259
Elizabeth A. Stone, David C. Snyder, Rebecca J. Sheesley, Amy P. Sullivan, Rodney J. Weber, James J. Schauer
Abstract. Organic carbon (OC) comprises a large fraction of fine particulate matter (PM2.5) in Mexico City. Daily and select 12-h PM2.5 samples were collected in urban and peripheral sites in Mexico City from 17–30 March 2006. Samples were analyzed for OC and elemental carbon (EC) using thermal-optical filter-based methods. Real-time water-soluble organic carbon (WSOC) was collected at the...... hiện toàn bộ
The distribution and trends of fog and haze in the North China Plain over the past 30 years
Copernicus GmbH - Tập 14 Số 21 - Trang 11949-11958
G. Q. Fu, Wanyun Xu, Rongfang Yang, J. B. Li, Chunsheng Zhao
Abstract. Frequent low visibility, haze and fog events were found in the North China Plain (NCP). Data throughout the NCP during the past 30 years were examined to determine the horizontal distribution and decadal trends of low visibility, haze and fog events. The impact of meteorological factors such as wind and relative humidity (RH) on those events was investigated. Results reveal disti...... hiện toàn bộ
Investigations of temporal and spatial distribution of precursors SO<sub>2</sub> and NO<sub>2</sub> vertical columns in the North China Plain using mobile DOAS
Copernicus GmbH - Tập 18 Số 3 - Trang 1535-1554
Fengcheng Wu, Pinhua Xie, Ang Li, Fusheng Mou, Hao Chen, Yi Zhu, Tong Zhu, Jianguo Liu, Wenqing Liu
Abstract. Recently, Chinese cities have suffered severe events of haze air pollution, particularly in the North China Plain (NCP). Investigating the temporal and spatial distribution of pollutants, emissions, and pollution transport is necessary to better understand the effect of various sources on air quality. We report on mobile differential optical absorption spectroscopy (mobile DOAS) ...... hiện toàn bộ
Evaluation of tropospheric SO<sub>2</sub> retrieved from MAX-DOAS measurements in Xianghe, China
Copernicus GmbH - Tập 14 Số 20 - Trang 11149-11164
Tao Wang, F. Hendrick, Pucai Wang, Guiqian Tang, K. Clémer, Huan Yu, C. Fayt, Christian Hermans, C. Gielen, Jean‐François Müller, Gaïa Pinardi, Nicolas Theys, Hugues Brenot, Michel Van Roozendaël
Abstract. Ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements of sulfur dioxide (SO2) have been performed at the Xianghe station (39.8° N, 117.0° E) located at ~ 50 km southeast of Beijing from March 2010 to February 2013. Tropospheric SO2 vertical profiles and corresponding vertical column densities (VCDs), retrieved by applying the optimal estimat...... hiện toàn bộ
Four years of ground-based MAX-DOAS observations of HONO and NO<sub>2</sub> in the Beijing area
Copernicus GmbH - Tập 14 Số 2 - Trang 765-781
F. Hendrick, Jean‐François Müller, K. Clémer, Pucai Wang, Martine De Mazière, C. Fayt, C. Gielen, Christian Hermans, Jianzhong Ma, Gaïa Pinardi, T. Stavrakou, Tim Vlemmix, Michel Van Roozendaël
Abstract. Ground-based Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) measurements of nitrous acid (HONO) and its precursor NO2 (nitrogen dioxide) as well as aerosols have been performed daily in Beijing city centre (39.98° N, 116.38° E) from July 2008 to April 2009 and at the suburban site of Xianghe (39.75° N, 116.96° E) located ~60 km east of Beijing from March 2010 ...... hiện toàn bộ
Projections of air pollutant emissions and its impacts on regional air quality in China in 2020
Copernicus GmbH - Tập 11 Số 7 - Trang 3119-3136
Jia Xing, Shuxiao Wang, Satoru Chatani, C. Y. Zhang, W. Wei, Jiming Hao, Zbigniew Klimont, J. Cofała, Markus Amann
Abstract. Anthropogenic emissions of air pollutants in China influence not only local and regional environments but also the global atmospheric environment; therefore, it is important to understand how China's air pollutant emissions will change and how they will affect regional air quality in the future. Emission scenarios in 2020 were projected using forecasts of energy consumption and e...... hiện toàn bộ
Determination of tropospheric vertical columns of NO<sub>2</sub> and aerosol optical properties in a rural setting using MAX-DOAS
Copernicus GmbH - Tập 11 Số 23 - Trang 12475-12498
J. D. Halla, T. Wagner, Steffen Beirle, J. R. Brook, Katherine Hayden, Jason O’Brien, A. Ng, D. Majonis, Mark Wenig, R. McLaren
Abstract. Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) measurements were performed in a rural location of southwestern Ontario during the Border Air Quality and Meteorology Study. Slant column densities (SCDs) of NO2 and O4 were determined using the standard DOAS technique. Using a radiative transfer model and the O4 SCDs, aerosol optical depths were determined for cl...... hiện toàn bộ
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