Study of a pollution transport event at an alpine mountain station

1989 ◽  
Vol 20 (8) ◽  
pp. 1253-1256 ◽  
Author(s):  
G.M. Marcazzan ◽  
M. Maugeri ◽  
P. Bonelli
Keyword(s):  
Pollution Transport ◽  
Mountain Station

scholarly journals Variability of springtime transpacific pollution transport during 2000–2006: the INTEX-B mission in the context of previous years

2010 ◽  
Vol 10 (3) ◽  
pp. 1345-1359 ◽  
Author(s):  
G. G. Pfister ◽  
L. K. Emmons ◽  
D. P. Edwards ◽  
A. Arellano ◽  
T. Campos ◽  
...  
Keyword(s):  
Transport Model ◽  
Pollution Transport ◽  
Chemistry Transport Model ◽  
Pollution Levels ◽  
Annual Variability ◽  
Source Regions ◽  
Time Period ◽  
The Pacific ◽  
The Us ◽  
Transport Experiment

Abstract. We analyze the transport of pollution across the Pacific during the NASA INTEX-B (Intercontinental Chemical Transport Experiment Part B) campaign in spring 2006 and examine how this year compares to the time period for 2000 through 2006. In addition to aircraft measurements of carbon monoxide (CO) collected during INTEX-B, we include in this study multi-year satellite retrievals of CO from the Measurements of Pollution in the Troposphere (MOPITT) instrument and simulations from the chemistry transport model MOZART-4. Model tracers are used to examine the contributions of different source regions and source types to pollution levels over the Pacific. Additional modeling studies are performed to separate the impacts of inter-annual variability in meteorology and dynamics from changes in source strength. Interannual variability in the tropospheric CO burden over the Pacific and the US as estimated from the MOPITT data range up to 7% and a somewhat smaller estimate (5%) is derived from the model. When keeping the emissions in the model constant between years, the year-to-year changes are reduced (2%), but show that in addition to changes in emissions, variable meteorological conditions also impact transpacific pollution transport. We estimate that about 1/3 of the variability in the tropospheric CO loading over the contiguous US is explained by changes in emissions and about 2/3 by changes in meteorology and transport. Biomass burning sources are found to be a larger driver for inter-annual variability in the CO loading compared to fossil and biofuel sources or photochemical CO production even though their absolute contributions are smaller. Source contribution analysis shows that the aircraft sampling during INTEX-B was fairly representative of the larger scale region, but with a slight bias towards higher influence from Asian contributions.

ON THE ISSUE OF CREATING TOURIST CLUSTERS IN KHMELNYTSKYI REGION

2021 ◽  
Vol 50 (1) ◽  
pp. 126-133
Author(s):  
Olesia Dolynska
Keyword(s):  
Economic Development ◽  
Rural Areas ◽  
Synergetic Effect ◽  
Geographical Location ◽  
Pollution Transport ◽  
Social Infrastructure ◽  
Regional Tourism ◽  
Socio Economic Development ◽  
Green Tourism ◽  
The Creation

Important issues in the development of regional tourism are the provision of tourist services, formation of the market of services and infrastructure improvement. The creation of clusters in the tourism sector remains relevant. From the standpoint of geographical science, the formation of tourist clusters is quite studied. The tourist potential of Khmelnytskyi region first of all includes the objects of nature reserve and historical-cultural funds available in the regional territory, which have not been involved in tourist activity yet. They are the basis for the formation of new tourist attractions, which can be used for the development of rural tourism, job creation, finding sources of income for newly formed territorial communities in order to obtain a positive effect from their formation. It is established that the synergetic effect promotes the creation of clusters with similar specialization. Determining the prospects of the tourist cluster of Khmelnytskyi region, special attention should be paid to such a form of tourism as rural (green) tourism. Extensive implementation of green tourism in the practice of newly formed united territorial communities in the region will provide additional resources to enhance their socio-economic development. Especially relevant tourist and recreational activities are in the buffer zones of national nature parks and landscape Regional Park, which are located in the Khmelnytskyi region. It is described that the material and technical base of tourism consists of: temporary accommodation facilities; specialized transport companies; tourist and excursion institutions and their subdivisions; information and advertising services; enterprises for the production and sale of tourist goods. Social infrastructure is also important for the organization of high-quality recreation for tourists: the availability of housing and communal services, cultural and household services, health care, and trade. From the standpoint of traditional economic and geographical complex formation, all factors of tourist complexes are divided into two major groups: socio-economic (labor, transport, trade and catering, souvenirs, city tourist development) and natural (geographical location, nature surface area, air temperature) etc. Many scholars, as the main social factors in the development of the tourist complex distinguish: socio-cultural: cultural-historical (architectural-historical) resources, settlement, administrative-territorial division; production and economic: labor resources, the structure of the city's economy, sources of environmental pollution, transport, land resources. Analysis of the location of these factors from the standpoint of social geography will justify measures aimed at enhancing the development of tourism in the regional tourism complex. Mass tourism is possible only if the needs of travelers in food and accommodation are met. Relevant facilities should have a range of hygiene and waste disposal facilities for tourists. Therefore, it is important, especially in rural areas, to provide in the plans of socio-economic development and general schemes of rural development places for temporary stay of tourists, appropriate infrastructure facilities, to reserve land for their arrangement. The analysis of the possibilities of Khmelnytskyi region in the tourist market of Ukraine showed that it occupies the middle places. This is due to the transit transport and geographical location. Within this region there is a clear polarization of tourism development, which determines the spatial features of the regional tourist complex development. Key words: tourist cluster, Khmelnytskyi region, green tourism, socio-economic development of the region.

scholarly journals Pre-monsoon air quality over Lumbini, a world heritage site along the Himalayan foothills

2016 ◽  
Author(s):  
Dipesh Rupakheti ◽  
Bhupesh Adhikary ◽  
Puppala S. Praveen ◽  
Maheswar Rupakheti ◽  
Shichang Kang ◽  
...  
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Forest Fires ◽  
Air Pollutants ◽  
Transport Model ◽  
World Heritage ◽  
World Heritage Site ◽  
Pollution Level ◽  
Pollution Transport ◽  
Heritage Site

Abstract. Lumbini, in southern Nepal, is a UNESCO world heritage site of universal value as the birthplace of Buddha. Poor air quality in Lumbini and surrounding regions is a great concern for public health as well as for preservation, protection and promotion of Buddhist heritage and culture. We present here results from measurements of ambient concentrations of key air pollutants (PM, BC, CO, O3) in Lumbini, first of its kind for Lumbini, conducted during an intensive measurement period of three months (April–June 2013) in the pre-monsoon season. The measurements were carried out as a part of the international air pollution measurement campaign; SusKat-ABC (Sustainable Atmosphere for the Kathmandu Valley – Atmospheric Brown Clouds). The ranges of hourly average concentrations were: PM10: 10.5–604.0 µg m−3, PM2.5: 6.1–272.2 µg m−3; BC: 0.3–30.0 µg m−3; CO: 125.0–1430.0 ppbv; and O3: 1.0–118.1 ppbv. These levels are comparable to other very heavily polluted sites throughout South Asia. The 24-h average PM2.5 and PM10 concentrations exceeded the WHO guideline very frequently (94 % and 85 % of the sampled period, respectively), which implies significant health risks for the residents and visitors in the region. These air pollutants exhibited clear diurnal cycles with high values in the morning and evening. During the study period, the worst air pollution episodes were mainly due to agro-residue burning and regional forest fires combined with meteorological conditions conducive of pollution transport to Lumbini. Fossil fuel combustion also contributed significantly, accounting for more than half of the ambient BC concentration according to aerosol spectral light absorption coefficients obtained in Lumbini. WRF-STEM, a regional chemical transport model, was used to simulate the meteorology and the concentrations of pollutants. The model was able to reproduce the variation in the pollutant concentrations well; however, estimated values were 1.5 to 5 times lower than the observed concentrations for CO and PM10 respectively. Regionally tagged CO tracers showed the majority of CO came from the upwind region of Ganges valley. The model was also used to examine the chemical composition of the aerosol mixture, indicating that organic carbon was the main constituent of fine mode PM2.5, followed by mineral dust. Given the high pollution level, there is a clear and urgent need for setting up a network of long-term air quality monitoring stations in the greater Lumbini region.

scholarly journals Modelling of Pollution Transport with Sediment on the Example of the Widawa River

2013 ◽  
Vol 39 (2) ◽  
pp. 29-43 ◽  
Author(s):  
Robert Kasperek ◽  
Marian Mokwa ◽  
Mirosław Wiatkowski
Keyword(s):  
Grain Size ◽  
Cross Sections ◽  
Sample Volume ◽  
Industrial Wastes ◽  
Phosphorus Concentration ◽  
Pollution Transport ◽  
Sediment Grain Size ◽  
Run Off ◽  
Odra River ◽  
Geochemical Analyses

Abstract The aim of the study was to determine the contamination transport condition with sediment in the Widawa River, which inflows to the Odra River below Wrocław city. The transport simulations have been performed by means of HEC-RAS model, which was calibrated. Study and geochemical analyses indicate that pollutions are cumulated mainly in sediment of grain size, less than 0,20 mm. It was stated that the main sources of contaminations occurring in the Widawa River bottoms are: superficial run-off, municipal and industrial wastes. Sediment bed quality from the Widawa River in selected cross-sections has been analyzed. Samples of suspended load were collected and divided into eight fractions, for which the phosphorus concentration P was calculated. Deposit particles less than 0,20 mm contained most phosphorus, i.e. 73% (3,52 ppm), and particles greater than 0,20 mm about 27% (1,30 ppm) for the whole sample volume. Relationship between the phosphorus concentration P and the sediment grain size was determined. Analysis showed that the initiation of contamination-sediment suspension in the Widawa River is well described by Engelund criterion. Simulations of the migration of pollutions together with deposits in the Widawa River showed that during average flow discharge, the transport intensity of pollution was equal 2 mg/s, and sediments 6 kg/s. In the present work the water quality of the Widawa River has been also presented.

scholarly journals Atmospheric brown clouds reach the Tibetan Plateau by crossing the Himalayas

2015 ◽  
Vol 15 (11) ◽  
pp. 6007-6021 ◽  
Author(s):  
Z. L. Lüthi ◽  
B. Škerlak ◽  
S.-W. Kim ◽  
A. Lauer ◽  
A. Mues ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Weather Prediction ◽  
Mountain Range ◽  
The Tibetan Plateau ◽  
Pollution Transport ◽  
Synoptic Scale ◽  
Gangetic Plain ◽  
Dark Light ◽  
Air Masses ◽  
Pollution Episode

Abstract. The Himalayas and the Tibetan Plateau region (HTP), despite being a remote and sparsely populated area, is regularly exposed to polluted air masses with significant amounts of aerosols including black carbon. These dark, light-absorbing particles are known to exert a great melting potential on mountain cryospheric reservoirs through albedo reduction and radiative forcing. This study combines ground-based and satellite remote sensing data to identify a severe aerosol pollution episode observed simultaneously in central Tibet and on the southern side of the Himalayas during 13–19 March 2009 (pre-monsoon). Trajectory calculations based on the high-resolution numerical weather prediction model COSMO are used to locate the source regions and study the mechanisms of pollution transport in the complex topography of the HTP. We detail how polluted air masses from an atmospheric brown cloud (ABC) over South Asia reach the Tibetan Plateau within a few days. Lifting and advection of polluted air masses over the great mountain range is enabled by a combination of synoptic-scale and local meteorological processes. During the days prior to the event, winds over the Indo-Gangetic Plain (IGP) are generally weak at lower levels, allowing for accumulation of pollutants and thus the formation of ABCs. The subsequent passing of synoptic-scale troughs leads to southwesterly flow in the middle troposphere over northern and central India, carrying the polluted air masses across the Himalayas. As the IGP is known to be a hotspot of ABCs, the cross-Himalayan transport of polluted air masses may have serious implications for the cryosphere in the HTP and impact climate on regional to global scales. Since the current study focuses on one particularly strong pollution episode, quantifying the frequency and magnitude of similar events in a climatological study is required to assess the total impact.

Sign in / Sign up

Export Citation Format

Share Document