This work grew from initiatives of the International Society of Biometeorology's Commission on Climate, Tourism and Recreation (ISBCCTR). The ISBCCTR was formed during the 15th Congress of the ISB held in November 1999 in Sydney, Australia. The aim of ISBCCTR is to promote research in tourism climatology. The first formal meeting of the Commission took place at the Meliton Resort, Halkidiki, Greece, 5-10 October 2001. The aims were to (1) bring together a selection of scientists and tourism experts to review the current state of knowledge of tourism climatology and (2) explore areas and priorities for future work and the role of the Commission in this. The Workshop highlighted the fact that, although climate is widely recognised as vitally important to tourism, relatively little is known about its effects. Even less is known about the economic impact or significance of climate on commercial prospects for tourism. Important research themes that warrant attention were identified. Among these was the need for a tourism climate index (or indices) that integrates all facets of climate, uses standard data and is objectively tested and verified. Work is also required on developing a better understanding of what climate-related information is required by both tourists and the tourism industry, exploring the distinction between the impact of climate on tourists and the impact on the tourism industry, setting a standard approach to tourism climate assessment, assessing the role of weather forecasts and long-term expectations of climate on choices made by tourists, the risks to tourism caused by extreme atmospheric events, what climate-related criteria people use to make decisions about tourism and recreational choices, how products giving information about weather and climate are currently used by the recreation and tourism industry and what are the existing and future requirements for this climate information.
Climate is a key resource for many types of tourism and as such can be measured and evaluated. An index approach is required for this task because of the multifaceted nature of weather and the complex ways that weather variables come together to give meaning to climate for tourism. Here we address the deficiencies of past indices by devising a theoretically sound and empirically tested method that integrates the various facets of climate and weather into a single index called the Climate Index for Tourism (CIT). CIT rates the climate resource for activities that are highly climate/weather sensitive, specifically, beach "sun, sea and sand" (3S) holidays. CIT integrates thermal (T), aesthetic (A) and physical (P) facets of weather, which are combined in a weather typology matrix to determine a climate satisfaction rating that ranges from very poor (1=unacceptable) to very good (7=optimal). Parameter A refers to sky condition and P to rain or high wind. T is the body-atmosphere energy balance that integrates the environmental and physiological thermal variables, such as solar heat load, heat loss by convection (wind) and by evaporation (sweating), longwave radiation exchange and metabolic heat (activity level). Rather than use T as a net energy (calorific) value, CIT requires that it be expressed as thermal sensation using the standard nine-point ASHRAE scale ("very hot" to "very cold"). In this way, any of the several body-atmosphere energy balance schemes available may be used, maximizing the flexibility of the index. A survey (N=331) was used to validate the initial CIT. Respondents were asked to rate nine thermal states (T) with different sky conditions (A). They were also asked to assess the impact of high winds or prolonged rain on the perceived quality of the overall weather condition. The data was analysed statistically to complete the weather typology matrix, which covered every possible combination of T, A and P. Conditions considered to be optimal (CIT class 6-7) for 3S tourism were those that were "slightly warm" with clear skies or scattered cloud (
Climate has an important influence on the travel decisions of tourists. This paper reviews the distinct lines of inquiry that have been used to examine the influence of climate on tourist decision making, and attempts to define optimal climatic conditions for tourism. The study examined tourist perceptions of optimal climatic conditions (for temperature, sunshine, wind) and the relative importance of 4 climatic parameters (temperature, precipitation, sunshine, wind) in 3 major tourism environments (beach-coastal, urban, mountains). A survey instrument was administered to university students (n = 831) representing the young-adult travel segment, in 3 countries (Canada, New Zealand, Sweden). Three salient findings include: significant variation in the perceived optimum climatic conditions for the 3 major tourism environments, differences in the relative importance of the 4 climatic parameters in the 3 tourism environments, and similarities as well as differences in the climatic preferences of respondents from the 3 nations. These findings have several implications for the literature on climate and tourism, including the development of climate indices for tourism, destination choice and travel pattern modelling, and climate change impact assessments. When applied to a broader cross-cultural sample of tourist segments, the present approach could potentially reveal the complexities of tourist preferences for climate.
The very large number of human thermal climate indices that have been proposed over the past 100 years or so is a manifestation of the perceived importance within the scientific community of the thermal environment and the desire to quantify it. Schemes used differ in approach according to the number of variables taken into account, the rationale employed, the relative sophistication of the underlying body-atmosphere heat exchange theory and the particular design for application. They also vary considerably in type and quality, as well as in several other aspects. Reviews appear in the literature, but they cover a limited number of indices. A project that produces a comprehensive documentation, classification and overall evaluation of the full range of existing human thermal climate indices has never been attempted. This paper deals with documentation and classification. A subsequent report will focus on evaluation. Here a comprehensive register of 162 thermal indices is assembled and a sorting scheme devised that groups them according to eight primary classification classes. It is the first stage in a project to organise and evaluate the full range of all human thermal climate indices. The work, when completed, will make it easier for users to reflect on the merits of all available thermal indices. It will be simpler to locate and compare indices and decide which is most appropriate for a particular application or investigation.
Study of cave climates is a neglected aspect of microclimatology. An understanding of the processes that control cave climate is required in the study of cave flora and fauna, thermodynamic conditions for karst processes underground, hydrogeologic features of speleothems as well as human use of caves for recreational and commercial purposes. An understanding of cave airflow is of central importance as the climate of a cave is a function of air exchange with the outside environment. The study site is the Glowworm Cave of New Zealand and is of particular interest because of its heavy visitor use and the presence of climate sensitive cave fauna on which the value of the cave as a tourist attraction depends.The study examines airflow using conventional methods together with experimental procedures using SF, and CC12Fz tracer gases. The results show that the rate and direction of airflow are a direct response to a thermally induced disequilibrium in air density between the cave and outside air. Both diurnal and seasonal patterns in the direction of airflow were identified. Reversal of airflow occurs when the cave to outside air density gradient is zero rather than when thermal conditions of the cave and external air are the same. Major and minor airflow routes through the cave were identified. The results of the gas tracer experiments allowed estimation of rates of air change in different parts of the cave and confirm the marked difference in ventilation that occurs within the cave. Information of this type is important because of the relationship between natural ventilation and C02 buildup. There is also the effect of ventilation on differences in climate within the cave as the thermal and moisture effects of outside air will not be as pronounced in parts of the cave where air change is limited.
The study examines methods for assessing the atmospheric resource component of recreation environments. Beach use is selected as it is a highly weather sensitive recreational activity. The study area is King's Beach in Queensland, Australia. The nature of the relationship between beach climate and the enjoyment of recreational pursuits is taken to be a function of thermal, physical, and aesthetic components of the atmospheric environment. A body-atmosphere heat-budget model is used to integrate and isolate the thermal component of beach weather and enable identification of important nonthermal recreational resource attributes of the atmosphere. Beach-user sensory perception of on-site atmospheric conditions expressed verbally is used to assess the physical and aesthetic components of the atmospheric environment. The immediate thermal environment of the beach user is the main contributing factor to assessments of the desirability of on-site meteorological conditions, followed by the non-thermal effects of cloud and wind. Rainfall events of half-hour duration or longer have an overriding effect.
Numerous human thermal climate indices have been proposed. It is a manifestation of the perceived importance of the thermal environment within the scientific community and a desire to quantify it. Schemes used differ in approach according to the number of variables taken into account, the rationale employed, and the particular design for application. They also vary considerably in type and quality, method used to express output, as well as in several other aspects. In light of this, a three-stage project was undertaken to deliver a comprehensive documentation, classification, and overall evaluation of the full range of existing human thermal climate indices. The first stage of the project produced a comprehensive register of as many thermal indices as could be found, 165 in all. The second stage devised a sorting scheme of these human thermal climate indices that grouped them according to eight primary classification categories. This, the third stage of the project, evaluates the indices. Six evaluation criteria, namely validity, usability, transparency, sophistication, completeness, and scope, are used collectively as evaluation criteria to rate each index scheme. The evaluation criteria are used to assign a score that varies between 1 and 5, 5 being the highest. The indices with the highest in each of the eight primary classification categories are discussed. The work is the final stage of a study of the all human thermal climatic indices that could be found in literature. Others have considered the topic, but this study is the first detailed, genuinely comprehensive, and systematic comparison. The results make it simpler to locate and compare indices. It is now easier for users to reflect on the merits of all available thermal indices and decide which is most suitable for a particular application or investigation.
Earlier work on the role of airflow and ventilation in cave climate is extended to include the processes of heat and mass transfer. The study site is Glowworm Cave in New Zealand which is of special interest because of the existence of climate sensitive cave fauna on which the value of a cave as a tourist resource depends. However, the purpose is to provide greater insight into processes governing cave climate generally. Detailed measurements of temperature, humidity and evaporation were made over a 12-month period and a thermodynamic advection model calibrated to help explain climatic patterns observed and processes operating. The results show that the spatial and temporal distribution ofcave air temperature and humidity, as well as direction of airflow, can be determined from external air temperature and humidity. The dominant processes are the vapour and sensible and latent heat fluxes to and from both thc air moving through the cave and the cave surfaces. In winter there is strong drying and cooling of the cave environment as external air entering the cave is warmed. In summer, humidity levels in the cave rise substantially and result in condensation (wetting) through the cave despite general warming of the cave air.
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