The Russian Arctic and Antarctic Research Institute (AARI) has conducted long-term meteorological studies over the Arctic basin and adjacent Siberian seas. Standard measurements of precipitation and snow geophysical properties were made, consistent with methods recommended by the World Meteorological Organization (WMO). An extensive set of snow and precipitation data has been collected during the last 40 years and has been assembled into a digital database. These data are now kept at the National Snow and Ice Data Center (NSIDC) and World Data Center A for Glaciology. The geophysical properties of snow and sea ice together affect the conductive, turbulent, and radiative energy exchanges between the ocean and atmosphere. The spatial and temporal variations in these exchanges have an impact on virtually all the physical processes operating across this interface. This paper describes some of the basic characteristics of these snow and precipitation data, including seasonal and interannual variability.

The speed with which tracks form as a result of trampling on exposed ground surfaces in Antarctica was investigated in the McMurdo Sound and Dry Valleys regions, by a simple treading experiment. Distinct tracks formed with fewer than 20 foot passes — as measured by stone cover, surface soil exposure, and track width — and they continued to develop with increasing traffic levels. Track development was rapid and most obvious on sandy gravel soils with a pebbly desert pavement, but slower and less distinct on soils with an extensive cover of surface boulders.

The persistence of human impact from ground disturbances, which occurred up to 30 years previously, when pits were dug during field science investigations, was assessed using a range of previously defined criteria. Recently disturbed sites, where some action had been taken to restore the site immediately after disturbance, showed the least overall impact. Impacts persisted longer at sites where no restoration had been undertaken, but the remaining impact varied with factors such as exposure to wind and the age of the land surface. These results demonstrate the fragility of Antarctic soil surfaces and the terrestrial environment, as well as the long time-scales for recovery of Antarctic ground-surface disturbances.

The regulation of tourism in polar areas is increasingly of concern to scientists, policy makers, tourists, and tourist operators who wish to control negative impacts and promote positive ones. Given the growing emphasis on finding and using appropriate ways to control visitors to the polar regions, it is important to examine issues related to the effectiveness of individual measures of regulation and the broader strategies that are in effect in these places. This paper examines the effectiveness of visitor-regulation strategies by outlining a two-step approach to evaluation. The initial step should involve determining the nature and attributes of the measures that make up the strategy. Commonalities, differences, constraints, and complementarity in these measures must be assessed. Particular attributes outlined in the paper, such as scale of jurisdiction and degree of restrictiveness, can be examined to assess the compatibility and consistency of the measures, which have implications for overall strategy effectiveness. While it may be appropriate to evaluate individual measures further using a goal-achievement approach, the paper recommends evaluating strategies through a conceptual approach based on criteria related to the characteristics of an effective strategy. Four are described in the paper: comprehensiveness, enforceability, outcomes, and appropriateness.

There is strong contemporary interest in the application of traditional environmental knowledge (TEK) of physical environments and land-use patterns in northern Canada. This interest relates to land claims, land-use planning, cultural preservation, resource management, and environmental monitoring. The application of TEK to land and resource management is critically examined and a typology relating scale, user group, and the transformation of knowledge is developed. Of the many challenges facing the incorporation of TEK in resource-management initiatives, perhaps the greatest is the recognition of the appropriateness of scale. The conclusions reached in this paper reaffirm the notion that scale and context are key components in maintaining the validity and integrity of TEK. The primary role of TEK appears to be with providing the most valid and intelligible interpretations of local geographies and prescribing locally appropriate resource-management strategies.

The thirteenth UN session on the ‘Question of Antarctica,’ held at the close of 1996, saw the reaffirmation of the consensus approach restored in 1994. One brief session of the First Committee, followed by the General Assembly's adoption of resolution A51/56 without a vote, signified the continued acceptance by UN members, including Antarctic Treaty Parties (ATPs), of the benefits of an agreed approach towards the ‘Question of Antarctica.’ Resolution A51/56, acknowledging the broader international community's interest in the continent, marked the ATPs' willingness to allow a limited UN role in Antarctica. UN members, identifying the merits of further research on environmental and scientific questions, pressed the case for a comprehensive report on the state of the Antarctic environment, as discussed at recent Antarctic Treaty Consultative Meetings. The ‘Question of Antarctica,’ having moved from annual to biennial UN discussions in 1994, has now been put on a three-year cycle; thus, it will not be placed on the UN agenda again until the close of 1999.

The landing of visitors in Antarctica presents wilderness managers with several challenges. Foremost among these is ensuring that visitors do not ‘love the wilderness to death.’ This article presents research gathered on Hannah Point, Livingston Island, South Shetland Islands during the austral summer of 1993/94. First, an estimation of duration and type of use was conducted to identify where visitors spent the majority of their time, and second, what conditions, such as weather, physical layout, or on-site supervision, influenced this decision. The implications of these results are discussed vis-à-vis the current system of visitor landings, and suggestions are offered to help devise criteria for landing procedures. This paper stresses how the pattern of visitor landings can be altered, as a preventative strategy, to ensure low impact on visitor sites.