Question 1

How does the frequent tourism in Makarska impact local air quality?

Accepted Answer

Makarska’s reliance on tourism significantly influences its air quality, particularly during the peak summer months. The influx of visitors dramatically increases vehicular traffic, including cars, buses, and scooters, leading to elevated levels of nitrogen dioxide (NO2) and particulate matter (PM) from exhaust emissions. Increased energy consumption in hotels, restaurants, and other tourist facilities also contributes to pollution, though this is less pronounced given Croatia’s relatively clean energy mix. Furthermore, the concentration of people in a small coastal area amplifies the impact of localized pollution sources. While Makarska doesn’t have heavy industry, the sheer volume of activity during the tourist season overwhelms the natural dispersion capacity of the area, especially during calm weather conditions. The increased use of recreational boats and jet skis also contributes to emissions. Long-term, sustainable tourism practices, including promoting public transport, electric vehicles, and energy efficiency, are crucial for mitigating these impacts and preserving Makarska’s air quality.

Question 2

What role does the Biokovo mountain range play in Makarska’s air pollution levels?

Accepted Answer

The Biokovo mountain range is a dominant geographical feature that profoundly affects Makarska’s air quality. Its steep slopes create orographic lift, influencing wind patterns and often leading to localized weather phenomena. While the mountains generally act as a barrier, preventing the influx of pollutants from inland areas, they can also trap pollutants when winds are weak or blow from the south. This creates a ‘bowl’ effect, concentrating emissions within the coastal strip. Katabatic winds, descending from the mountains, can also contribute to stagnation, particularly during winter months. The mountains also influence temperature inversions, where a layer of warm air traps cooler, polluted air near the ground. Furthermore, the karst terrain of Biokovo, with its limited vegetation cover, contributes to soil erosion and dust generation, especially during dry periods. Understanding the complex interplay between the mountains, wind patterns, and temperature inversions is crucial for accurate air quality forecasting and mitigation strategies in Makarska.

Question 3

Are agricultural practices in the surrounding area a source of air pollution in Makarska?

Accepted Answer

Agricultural activities in the hinterland surrounding Makarska can contribute to localized air pollution, particularly during specific times of the year. The burning of agricultural waste, such as olive tree pruning and crop residues, is a common practice, releasing significant amounts of particulate matter (PM2.5 and PM10) into the atmosphere. This is most prevalent during the spring and autumn months. The use of fertilizers and pesticides also releases ammonia and other volatile organic compounds (VOCs), which can contribute to the formation of secondary pollutants like ozone. While the agricultural zones are not immediately adjacent to the city centre, prevailing winds can transport these pollutants towards Makarska, especially during periods of atmospheric stability. The scale of agricultural activity is relatively small compared to other regions, but its impact can be noticeable, particularly in rural areas closer to the farms. Promoting sustainable agricultural practices, such as composting and reduced tillage, can help minimize these emissions and improve air quality.

Question 4

How does the Adriatic Sea influence air quality in Makarska?

Accepted Answer

The Adriatic Sea plays a complex and multifaceted role in influencing air quality in Makarska. Sea breezes, generated by temperature differences between land and sea, can provide a degree of pollutant dispersion, particularly during the daytime. However, these breezes can also transport pollutants from other coastal areas or even across the Adriatic Sea, depending on prevailing wind patterns. The sea surface temperature influences atmospheric stability; warmer water can contribute to temperature inversions, trapping pollutants near the ground. Sea spray, containing salt particles, can act as condensation nuclei, influencing cloud formation and precipitation, which can help cleanse the air. Furthermore, maritime traffic, including ferries and cargo ships, contributes to emissions of sulfur dioxide (SO2) and particulate matter. The humidity associated with the sea can also promote the formation of secondary pollutants, such as ozone. Monitoring sea surface temperatures and wind patterns is therefore essential for understanding and predicting air quality trends in Makarska.

Question 5

What are the long-term trends in air quality in Makarska, and what is being done to address pollution?

Accepted Answer

Long-term air quality trends in Makarska are influenced by a combination of factors, including increasing tourism, economic development, and regional pollution patterns. While comprehensive historical data is limited, observations suggest a gradual increase in pollutant concentrations, particularly during peak tourist seasons. The primary pollutants of concern remain particulate matter (PM2.5 and PM10), nitrogen dioxide (NO2), and ozone (O3). The local authorities are implementing several measures to address pollution, including promoting sustainable transportation options, such as cycling and public transport, and encouraging the use of electric vehicles. Efforts are also underway to improve waste management practices and reduce agricultural burning. Investment in air quality monitoring infrastructure is ongoing, providing more accurate and real-time data. Collaboration with regional and national authorities is crucial for addressing transboundary pollution sources. Further initiatives, such as promoting energy efficiency in buildings and supporting sustainable tourism practices, are needed to ensure long-term improvements in air quality and protect public health in Makarska.

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