| Title: | CO₂ and temperature variations during peak tourist season in Lepe jame (Postojna Cave, Slovenia) |
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| Authors: | ID Perne, Matija (Author)
ID Božnar, Marija Zlata (Author)
ID Mlakar, Primož (Author)
ID Grašič, Boštjan (Author)
ID Kokal, Dragana (Author)
ID Gabrovšek, Franci (Author) |
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| Files: |  URL - Source URL, visit https://ojs.zrc-sazu.si/carsologica/article/view/14931
 PDF - Presentation file, download (4,58 MB)
MD5: 080F499DC027629AE7BCF1F1238DE437
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZRC SAZU - The Research Centre of the Slovenian Academy of Sciences and Arts
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| Abstract: | We present and analyze measurements of CO₂ concentration and air temperature taken during the peak tourist season of 2017 in Lepe Jame, a poorly ventilated passage within Postojnska Jama, Slovenia. During the study, the passage was visited by between 5500 and 6500 visitors per day. Both parameters show pronounced diurnal fluctuations, primarily driven by visitor activity. As part of our campaign, we tested and confirmed the effectiveness of enhanced ventilation—achieved by opening the artificial tunnel connecting Postojnska Jama to Črna Jama—in preventing excessively high CO₂ concentrations. The measure is, however, questionable, as it affects the microclimate in Črna Jama. Although CO₂ concentration and temperature are correlated, notable differences emerge in the shapes of their respective rise and recession curves. Temperature increases more rapidly with the arrival of visitors, while it decreases more slowly after visiting hours compared to CO₂. This lag is attributed to thermal storage: heat from visitors is absorbed by the cave walls during the day and gradually released into the cave during the night. |
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| Keywords: | karst, cave climate, show cave, carbon dioxide, cave monitoring |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 16.12.2025 |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 205-216 |
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| Numbering: | letn. 54, št. 2-3 |
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| PID: | 20.500.12556/DiRROS-25119  |
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| UDC: | 551.44:551.584(497.4) |
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| ISSN on article: | 0583-6050 |
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| DOI: | 10.3986/ac.v54i2.14931 |
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| COBISS.SI-ID: | 262635779 |
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| Publication date in DiRROS: | 10.01.2026 |
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| Views: | 51 |
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| Downloads: | 25 |
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