Tellus B: Chemical and Physical Meteorology最新文献_第8页

Anthropogenic fine aerosols dominate the wintertime regime over the northern Indian Ocean 在北印度洋上空，人为的细小气溶胶主导着冬季状态

Tellus B: Chemical and Physical Meteorology Pub Date : 2018-01-01 DOI: 10.1080/16000889.2018.1464871

K. Budhavant, S. Bikkina, A. Andersson, E. Asmi, J. Backman, Jutta Kesti, H. Zahid, S. Satheesh, Ö. Gustafsson

{"title":"Anthropogenic fine aerosols dominate the wintertime regime over the northern Indian Ocean","authors":"K. Budhavant, S. Bikkina, A. Andersson, E. Asmi, J. Backman, Jutta Kesti, H. Zahid, S. Satheesh, Ö. Gustafsson","doi":"10.1080/16000889.2018.1464871","DOIUrl":"https://doi.org/10.1080/16000889.2018.1464871","url":null,"abstract":"Abstract This study presents and evaluates the most comprehensive set to date of chemical, physical and optical properties of aerosols in the outflow from South Asia covering a full winter (Nov. 2014 – March 2015), here intercepted at the Indian Ocean receptor site of the Maldives Climate Observatory in Hanimaadhoo (MCOH). Cluster analysis of air-mass back trajectories for MCOH, combined with AOD and meteorological data, demonstrate that the wintertime northern Indian Ocean is strongly influenced by aerosols transported from source regions with three major wind regimes, originating from the Indo-Gangetic Plain (IGP), the Bay of Bengal (BoB) and the Arabian Sea (AS). As much as 97 ± 3% of elemental carbon (EC) in the PM10 was also found in the fine mode (PM2.5). Other mainly anthropogenic constituents such as organic carbon (OC), non-sea-salt (nss) -K+, nss-SO42− and NH4+ were also predominantly in the fine mode (70–95%), particularly in the air masses from IGP. The combination at this large-footprint receptor observatory of consistently low OC/EC ratio (2.0 ± 0.5), strong linear relationships between EC and OC as well as between nss-K+ and both OC and EC, suggest a predominance of primary sources, with a large biomass burning contribution. The particle number-size distributions for the air masses from IGP and BoB exhibited clear bimodal shapes within the fine fraction with distinct accumulation (0.1 μm < d < 1 μm) and Aitken (0.025 μm < d < 0.10 μm) modes. This study also supports that IGP is a key source region for the wider South Asia and nearby oceans, as defined by the criteria that anthropogenic AODs exceed 0.3 and absorption AOD > 0.03. Taken together, the aerosol pollution over the northern Indian Ocean in the dry season is dominated by a well-mixed long-range transported regime of the fine-mode aerosols largely from primary combustion origin.","PeriodicalId":22320,"journal":{"name":"Tellus B: Chemical and Physical Meteorology","volume":"5 1","pages":"1 - 15"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87009569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Microphysical properties and radiative impact of an intense biomass burning aerosol event measured over Ny-Ålesund, Spitsbergen in July 2015 2015年7月在斯匹次卑尔根岛Ny-Ålesund上空测量的强烈生物质燃烧气溶胶事件的微物理特性和辐射影响

Tellus B: Chemical and Physical Meteorology Pub Date : 2018-01-01 DOI: 10.1080/16000889.2018.1539618

C. Ritter, M. Burgos, M. Burgos, C. Böckmann, D. Mateos, J. Lisok, K. Markowicz, B. Moroni, D. Cappelletti, R. Udisti, M. Maturilli, R. Neuber

{"title":"Microphysical properties and radiative impact of an intense biomass burning aerosol event measured over Ny-Ålesund, Spitsbergen in July 2015","authors":"C. Ritter, M. Burgos, M. Burgos, C. Böckmann, D. Mateos, J. Lisok, K. Markowicz, B. Moroni, D. Cappelletti, R. Udisti, M. Maturilli, R. Neuber","doi":"10.1080/16000889.2018.1539618","DOIUrl":"https://doi.org/10.1080/16000889.2018.1539618","url":null,"abstract":"Abstract In this work, an evaluation of an intense biomass burning event observed over Ny-Ålesund (Spitsbergen, European Arctic) in July 2015 is presented. Data from the multi-wavelengths Raman-lidar KARL, a sun photometer and radiosonde measurements are used to derive some microphysical properties of the biomass burning aerosol as size distribution, refractive index and single scattering albedo at different relative humidities. Predominantly particles in the accumulation mode have been found with a bi-modal distribution and dominance of the smaller mode. Above 80% relative humidity, hygroscopic growth in terms of an increase of particle diameter and a slight decrease of the index of refraction (real and imaginary part) has been found. Values of the single scattering albedo around 0.9 both at 355 nm and 532 nm indicate some absorption by the aerosol. Values of the lidar ratio are around 26 sr for 355 nm and around 50 sr for 532 nm, almost independent of the relative humidity. Further, data from the photometer and surface radiation values from the local baseline surface radiation network (BSRN) have been applied to derive the radiative impact of the biomass burning event purely from observational data by comparison with a clear background day. We found a strong cooling for the visible radiation and a slight warming in the infra-red. The net aerosol forcing, derived by comparison with a clear background day purely from observational data, obtained a value of –95 W/m2 per unit AOD500.","PeriodicalId":22320,"journal":{"name":"Tellus B: Chemical and Physical Meteorology","volume":"16 1","pages":"1 - 23"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75709570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Estimates of methane emissions from the Southern Ocean from quasi-continuous underway measurements of the partial pressure of methane in surface seawater during the 2012/13 austral summer 2012/13年南方夏季，通过准连续测量海面甲烷分压估算南大洋甲烷排放量

Tellus B: Chemical and Physical Meteorology Pub Date : 2018-01-01 DOI: 10.1080/16000889.2018.1478594

O. T. Bui, S. Kameyama, H. Yoshikawa‐Inoue, M. Ishii, D. Sasano, H. Uchida, U. Tsunogai

{"title":"Estimates of methane emissions from the Southern Ocean from quasi-continuous underway measurements of the partial pressure of methane in surface seawater during the 2012/13 austral summer","authors":"O. T. Bui, S. Kameyama, H. Yoshikawa‐Inoue, M. Ishii, D. Sasano, H. Uchida, U. Tsunogai","doi":"10.1080/16000889.2018.1478594","DOIUrl":"https://doi.org/10.1080/16000889.2018.1478594","url":null,"abstract":"Abstract We used a new underway measurement system to investigate the partial pressure of methane (CH4) in surface seawater and overlying air in the Southern Ocean from late November 2012 to mid-February 2013. The underway system consisted of a cavity ring-down spectroscopy analyser and a shower-head type equilibrator. The monthly mean atmospheric CH4 mixing ratios obtained agreed well (within 5 ppb) with those recorded at onshore baseline stations. CH4 saturation ratios (SR, %), defined as CH4 concentration in seawater divided by CH4 concentration equilibrated with atmospheric CH4, varied between 85 and 185%; most of the ratios we calculated indicated supersaturation, except for those from south of the Southern limit of Upper Circumpolar Deep Water. SR was higher at the lower latitudes, including coastal areas north of the Sub-Antarctic Front, but decreased gradually and monotonously between the Sub-Antarctic Front and the Upper Circumpolar Deep Water. At high latitudes south of the Polar Front, SR decreased to below 100% due to the effects of upwelling and vertical mixing. We found a strong linear correlation between SR and apparent oxygen utilisation (AOU) south of the Polar Front. Observed SR decreased with increasing AOU and reached 85% at high AOU (41 µmol kg−1) and low temperature (–1.8 °C). On the basis of the linear relationship between SR and AOU, we evaluated the climatological sea–air flux of CH4 from December to February for the entire Southern Ocean south of 50°S: Sea–air CH4 emission was estimated to be 0.027 Tg yr−1 in December, 0.04 Tg yr−1 in January, and 0.019 Tg yr−1 in February.","PeriodicalId":22320,"journal":{"name":"Tellus B: Chemical and Physical Meteorology","volume":"8 1","pages":"1 - 15"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79907340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Evaluation of forest CO2 fluxes from sonde measurements in three different climatological areas including Borneo, Malaysia, and Iriomote and Hokkaido, Japan 评估三个不同气候区的森林二氧化碳通量，包括婆罗洲、马来西亚和日本的伊洛莫特和北海道

Tellus B: Chemical and Physical Meteorology Pub Date : 2018-01-01 DOI: 10.1080/16000889.2018.1426316

Shohei Nomura, H. Mukai, Y. Terao, K. Takagi, M. Mohamad, M. F. Jahaya

{"title":"Evaluation of forest CO2 fluxes from sonde measurements in three different climatological areas including Borneo, Malaysia, and Iriomote and Hokkaido, Japan","authors":"Shohei Nomura, H. Mukai, Y. Terao, K. Takagi, M. Mohamad, M. F. Jahaya","doi":"10.1080/16000889.2018.1426316","DOIUrl":"https://doi.org/10.1080/16000889.2018.1426316","url":null,"abstract":"Abstract Evaluation of carbon dioxide (CO2) sinks in forest areas of East and Southeast Asia (especially tropical regions) is important for assessing CO2 budgets at the regional scale. To evaluate the CO2 flux of large forest areas, we collected vertical CO2 profiles over the forest using a CO2 sonde and measured surface CO2 concentrations around the forest using continuous CO2 measurement equipment. These observations were performed over a typical northern forest (Hokkaido) in Japan, a subtropical forest island (Iriomote Island) in Japan, and a tropical forest in Borneo Island. We detected the differences in CO2 vertical profiles between dawn and daytime, and at the upwind and downwind sites of the forests with the observational results from the CO2 sonde. We also clarified that CO2 concentrations during daytime at the downwind sites (affected by the forest) were systematically lower than those at the upwind sites (not affected by the forest). In contrast, CO2 concentrations during dawn at the downwind sites were larger than those at the upwind site. We estimated the CO2 fluxes (μmol m−2 s−1) at dawn and daytime of the forests from these observational results. The CO2 fluxes of Borneo’s forest were very large (16.5 and −37.7 at dawn and daytime, respectively), whereas the CO2 fluxes of the forests in Hokkaido and Iriomote were lower (3.9 to 11.8 at dawn and −11.8 to −15.0 at daytime). These evaluated values were consistent with fluxes measured by the eddy-covariance method in the same region. Thus, use of the CO2 sonde to collect observations of CO2 vertical profiles was considered to be an effective method to verify CO2 absorption and emission in large forest areas. This method can also be used to evaluate dynamic CO2 absorption and emission processes in tropical forests.","PeriodicalId":22320,"journal":{"name":"Tellus B: Chemical and Physical Meteorology","volume":"40 1","pages":"1 - 19"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79964007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The observed relationship of cloud to surface longwave radiation and air temperature at Ny-Ålesund, Svalbard 在斯瓦尔巴群岛Ny-Ålesund观测到的云与地表长波辐射和气温的关系

Tellus B: Chemical and Physical Meteorology Pub Date : 2018-01-01 DOI: 10.1080/16000889.2018.1450589

H. Yeo, Sang‐Jong Park, Baek‐Min Kim, M. Shiobara, Sang-Woo Kim, H. Kwon, Joo‐Hong Kim, Jee-Hoon Jeong, S. Park, T. Choi

{"title":"The observed relationship of cloud to surface longwave radiation and air temperature at Ny-Ålesund, Svalbard","authors":"H. Yeo, Sang‐Jong Park, Baek‐Min Kim, M. Shiobara, Sang-Woo Kim, H. Kwon, Joo‐Hong Kim, Jee-Hoon Jeong, S. Park, T. Choi","doi":"10.1080/16000889.2018.1450589","DOIUrl":"https://doi.org/10.1080/16000889.2018.1450589","url":null,"abstract":"Abstract Ten-year (2004–2013) observations of cloud and surface shortwave (SW) and longwave (LW) fluxes at Ny-Ålesund were analysed to investigate monthly variations in cloudiness and their impacts on the surface LW radiation budget and near-surface temperature (Ts). The cloud fraction (CF) showed distinct monthly variations, high in summer (0.90) and lower in winter (0.79). The downward SW flux increased from March and showed a peak (~200 W m−2) in June. In contrast, the downward LW (LWD) flux increased from ~200 W m−2 in February to ~300 W m−2 in July. Both LWD and upward LW (LWU) fluxes and their difference increased during winter as lowest cloud base height (LCBH) decreased and CF increased. Ts difference and both LW fluxes difference (ΔLWD and ΔLWU), calculated as the difference in monthly mean Ts and LW between all-sky and cloud-free conditions, were highly correlated (R2 = 0.68 for LWD and R2 = 0.92 for LWU). Dramatic changes in Ts, CF and LW fluxes at Ny-Ålesund were closely associated with cold and warm air mass advection on a multi-day time scale. The average Ts under low-level clouds (LCBH ≤ 2 km) was estimated as −7.4 ± 6.1 °C due to warm air masses advected from the North Atlantic Ocean and Barents Sea, whereas the average Ts on cloud-free days was −14.5 ± 5.7 °C because of cold air mass advection from the pole. However, the duration of low-level clouds may not be long enough to drive such large Ts variations. 75-percentile of low-level cloud conditions at Ny-Ålesund persisted up to 2.3 days, whereas cloud-free and high-altitude cloud (LCBH > 2 km) conditions lasted for approximately 0.8 and 0.5 days, respectively. This implies that cloud LW effects on several warm days may be larger than the monthly average, but may not be accumulated enough to induce surface warming due to abrupt Ts drop associated with cold air mass advection.","PeriodicalId":22320,"journal":{"name":"Tellus B: Chemical and Physical Meteorology","volume":"18 1","pages":"1 - 10"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74394429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 20

A continuous flow diffusion chamber study of sea salt particles acting as cloud nuclei: deliquescence and ice nucleation 作为云核的海盐颗粒的连续流动扩散室研究:潮解和冰核

Tellus B: Chemical and Physical Meteorology Pub Date : 2018-01-01 DOI: 10.1080/16000889.2018.1463806

Xiangrui Kong, M. Wolf, M. Roesch, E. Thomson, T. Bartels-Rausch, P. Alpert, M. Ammann, N. Prisle, D. Cziczo

{"title":"A continuous flow diffusion chamber study of sea salt particles acting as cloud nuclei: deliquescence and ice nucleation","authors":"Xiangrui Kong, M. Wolf, M. Roesch, E. Thomson, T. Bartels-Rausch, P. Alpert, M. Ammann, N. Prisle, D. Cziczo","doi":"10.1080/16000889.2018.1463806","DOIUrl":"https://doi.org/10.1080/16000889.2018.1463806","url":null,"abstract":"Abstract Phase changes of sea salt particles alter their physical and chemical properties, which is significant for Earth’s chemistry and energy budget. In this study, a continuous flow diffusion chamber is used to investigate deliquescence, homogeneous and heterogeneous ice nucleation between 242 K and 215 K, of four salts: pure NaCl, pure MgCl2, synthetic sea water salt, and salt distilled from sampled sea water. Anhydrous particles, aqueous droplets and ice particles were discriminated using a polarisation-sensitive optical particle counter coupled with a machine learning analysis technique. The measured onset deliquescence relative humidities agree with previous studies, where sea water salts deliquescence at lower humidities than pure NaCl. Deliquesced salt droplets homogenously freeze when the relative humidity reaches a sufficiently high value at temperatures below 233 K. From 224 K and below, deposition nucleation freezing on a fraction of NaCl particles was observed at humidities lower than the deliquescence relative humidity. At these low temperatures, otherwise unactivated salt particles deliquesced at the expected deliquescence point, followed by homogeneous freezing at temperatures as low as 215 K. Thus, the observed sea salt particles exhibit a triad of temperature-dependent behaviours. First, they act as cloud condensation particles (CCNs) > 233 K, second they can be homogeneous freezing nuclei (HFNs) < 233 K and finally they act as ice nucleating particles (INPs) for heterogeneous nucleation <224 K.","PeriodicalId":22320,"journal":{"name":"Tellus B: Chemical and Physical Meteorology","volume":"30 1","pages":"1 - 11"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88093967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

Current situation of atmospheric nanoparticles in Fukue Island, Japan 日本福岛大气中纳米粒子的现状

Tellus B: Chemical and Physical Meteorology Pub Date : 2018-01-01 DOI: 10.1080/16000889.2018.1498688

I. Chandra, T. Seto, Y. Otani, Y. Inomata, Naoya Hama, A. Yoshino, A. Takami, N. Takegawa

{"title":"Current situation of atmospheric nanoparticles in Fukue Island, Japan","authors":"I. Chandra, T. Seto, Y. Otani, Y. Inomata, Naoya Hama, A. Yoshino, A. Takami, N. Takegawa","doi":"10.1080/16000889.2018.1498688","DOIUrl":"https://doi.org/10.1080/16000889.2018.1498688","url":null,"abstract":"Abstract Emissions of polluted air in East Asia have gradually decreased over the last decade. Those air pollutants have been transported over long distances and influenced new particle formation (NPF) in the downstream region. We obtained 5-year data of the mobility size distribution and SO2 and particulate (PM2.5) emissions on Fukue Island (32.75°N, 128.68°E), Japan. Frequent NPF events in the 2013 campaign were observed around 60% under the transboundary transport of polluted air by northwesterly wind. In contrast to the data obtained in the last 2-year campaign (2016–2017), these NPF events (<25%) may reflect a relatively clean environment. The daily average SO2 and PM2.5 concentrations over the campaign periods are 2.3 ± 2.2 ppb and 17.6 ± 8.5 µg·m−3 (February 23 to March 7, 2013), 1.3 ± 0.9 ppb and 13.8 ± 4.7 µg·m−3 (February 27 to March 18, 2015), 0.8 ± 0.5 ppb and 14.7 ± 5.3 µg·m−3 (February 27 to March 25, 2016), and 0.5 ± 0.5 ppb and 12.1 ± 4.6 µg·m−3 (January 28 to April 19, 2017), respectively. These reductions of emissions may be due to the measures implemented by the local government in the source region to handle the adverse impacts of environmental pollution. The latest condition of atmospheric nanoparticles on Fukue Island can be used as an indicator to determine the concentration levels of regional air pollutants in East Asia.","PeriodicalId":22320,"journal":{"name":"Tellus B: Chemical and Physical Meteorology","volume":"11 1","pages":"1 - 12"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91285121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Surface tension data of n-propane, n-octane and n-dodecane from nucleation simulations 正丙烷、正辛烷和正十二烷成核模拟的表面张力数据

Tellus B: Chemical and Physical Meteorology Pub Date : 2018-01-01 DOI: 10.1080/16000889.2018.1463807

Z. Z. Martin, I. S. Martinez, Ricky B. Nellas

引用次数: 0

Mass flux analysis of 137Cs plumes emitted from the Fukushima Daiichi nuclear power plant 福岛第一核电站排放的137Cs羽流的质量通量分析

Tellus B: Chemical and Physical Meteorology Pub Date : 2018-01-01 DOI: 10.1080/16000889.2018.1507390

T. Sekiyama, T. Iwasaki

{"title":"Mass flux analysis of 137Cs plumes emitted from the Fukushima Daiichi nuclear power plant","authors":"T. Sekiyama, T. Iwasaki","doi":"10.1080/16000889.2018.1507390","DOIUrl":"https://doi.org/10.1080/16000889.2018.1507390","url":null,"abstract":"Abstract The flow vectors of radioactive cesium-137 (137Cs) plume emitted from the Fukushima Daiichi nuclear power plant in March 2011 were quantitatively depicted by a mass flux analysis in this study. 137Cs plumes were calculated by an Eulerian dispersion model with a 3-km horizontal resolution. The vertically column-integrated mass flux was consistent with the flow approximation based on ground surface 137Cs observations, even though there were some discrepancies that were caused by differences in the wind direction between the ground surface and the dominant plume layer. These discrepancies were explained by combining the use of the ground surface horizontal mass flux with the column-integrated mass flux. The mass flux analysis clearly provided an illustration of 137Cs dominant stream locations, directions, and depositions by reducing high-dimensional model outputs into a lower-dimensional plot. Mass flux (i.e. the product of the mass density and wind velocity) has often been used in dynamic meteorology but has not been used as frequently in atmospheric chemistry or pollutant dispersion studies. However, the concept of mass flux is a robust alternative for conventional validation approaches that only utilize a time series of pollutant concentrations. Mass flux analyses can be used further in atmospheric chemistry as a quantitative visualization tool to track the emission, advection, dispersion, and deposition of atmospheric constituents.","PeriodicalId":22320,"journal":{"name":"Tellus B: Chemical and Physical Meteorology","volume":"1 1","pages":"1 - 11"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75623194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Primary sources control the variability of aerosol optical properties in the Antarctic Peninsula 一次源控制着南极半岛气溶胶光学特性的变率

Tellus B: Chemical and Physical Meteorology Pub Date : 2018-01-01 DOI: 10.1080/16000889.2017.1414571

E. Asmi, K. Neitola, K. Teinilä, E. Rodríguez, A. Virkkula, J. Backman, M. Bloss, J. Jokela, H. Lihavainen, G. de Leeuw, J. Paatero, V. Aaltonen, M. Mei, Gonzalo Gambarte, Gustavo E. Copes, M. Albertini, Germán Pérez Fogwill, Jonathan E. Ferrara, M. E. Barlasina, Ricardo Sánchez

{"title":"Primary sources control the variability of aerosol optical properties in the Antarctic Peninsula","authors":"E. Asmi, K. Neitola, K. Teinilä, E. Rodríguez, A. Virkkula, J. Backman, M. Bloss, J. Jokela, H. Lihavainen, G. de Leeuw, J. Paatero, V. Aaltonen, M. Mei, Gonzalo Gambarte, Gustavo E. Copes, M. Albertini, Germán Pérez Fogwill, Jonathan E. Ferrara, M. E. Barlasina, Ricardo Sánchez","doi":"10.1080/16000889.2017.1414571","DOIUrl":"https://doi.org/10.1080/16000889.2017.1414571","url":null,"abstract":"Abstract Aerosol particle optical properties were measured continuously between years 2013–2015 at the Marambio station in the Antarctic Peninsula. Annual cycles of particle scattering and absorption were studied and explained using measured particle chemical composition and the analysis of air mass transport patterns. The particle scattering was found elevated during the winter but the absorption did not show any clear annual cycle. The aerosol single scattering albedo at nm was on average 0.96 0.10, with a median of 0.99. Aerosol scattering Ångström exponent increased during summer, indicating an increasing fraction of fine mode particles. The aerosol was mainly composed of sea salt, sulphate and crustal soil minerals, and most of the particle mass were in the coarse mode. Both the particle absorption and scattering were increased during high wind speeds. This was explained by the dominance of the primary marine sea-spray and wind-blown soil dust sources. In contrast, the back-trajectory analysis suggested that long-range transport has only a minor role as a source of absorbing aerosol at the peninsula.","PeriodicalId":22320,"journal":{"name":"Tellus B: Chemical and Physical Meteorology","volume":"67 3 1","pages":"1 - 16"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86433746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 28