‘To Prostitute the Elements’: Weather Control and Weaponisation by US Department of Defense

The US military has a long and robust history of scientific research programs, often conducted in conjunction with civilian scientists at non-military governmental agencies as well as universities. These programs flourished in the immediate post-Second World War and the early cold war years, as the field of military science expanded to address the sprawling Soviet threat. One area of growth was in atmospheric science, which had already taken off preceding Second World War in conjunction with the growth of air warfare. Advances in meteorology, cloud science and climatology enabled military interests to align with weather forecasters and also agricultural interests, as old ideas about cloud seeding and weather control were revived in the light of new research. The military, largely through the Air Force, advanced a series of projects investigating the potential of weather and climate control, manipulation, and ultimately weaponisation. These programs, which were sometimes linked to US Department of Agriculture programs aimed at improving agricultural production, persisted for decades. Some of the newly developed tools were deployed: local climate manipulation efforts during the Vietnam conflict were aimed at impeding traffic along the Ho Chi Minh Trail, with mixed results. Significant efforts came during the Weather Bureau leadership of Francis W. Reichelderfer, whose papers contain a wealth of information about efforts ranging from cloud seeding to proposals to drop atomic weapons on hurricanes. These papers, along with those of Weather Bureau scientist Harry Wexler, provide a fascinating window to a time when the US military and scientific establishment seemed poised to grasp the levers of power over nature itself. This paper describes these little-studied programs, and situates these efforts within the broader military science programs accompanying the emergence of air warfare, as well as post-war science programs aimed at countering the Soviet challenge.     

Elemental mobilities: atmospheres,matter and cycling amid the weather-world

Abstract

Everyday experiences of movement have become a central concern for social and cultural geography in recent years. Work here has begun to unpack the specific meanings, imaginaries and experiences that come to be bound up with mobile bodies and their practices. However, it has been suggested that more could be done to examine the material, elementary, molecular and physical aspects of movement which are significant to the experience of being on the move. Therefore, this paper explores the experience of cycling amid such turbulent ‘elemental’ materialities. Such ‘matters’ matter to cycling in the way that they (re)make both mobile environments and mobile subjectivities. Cyclists come to have quite immediate and intimate relationships with the material and ‘elementary’ aspects of the environments they move through given their relatively unmediated encounters with them. This paper draws on video-interview based research with 24 commuter cyclists in Plymouth, UK to consider cyclists’ experience of atmospheric conditions in terms of air’s force and air quality. From this, the paper reflects on how the experience of such ‘elemental’ matters might be significant to future research on and planning for cycling.     

Climatic anomalies,food systems,and subsistence crises in medieval Novgorod and Ladoga

Climatic factors have affected subsistence strategies throughout human history. In northern Europe and Russia, short-term climatic anomalies and weather extremes are commonly thought to underlie famines in the Middle Ages. However, medieval subsistence crises were not just natural disasters and medieval people were not passive victims of climatic anomalies. In addition, the capacity to cope with climatic anomalies has varied temporally and spatially throughout the Middle Ages. Yet only a few studies have explored the climatic impact on regional medieval food systems comprehensively. This article examines the significance of climate variability on subsistence crises in medieval Novgorod and Ladoga (Russia), focusing on the relationship between short-term climate anomalies and crop cultivation. In addition, this paper evaluates the impact of crop failures, frosts, and other weather phenomena on the food system. The materials are drawn from medieval sources, paleoclimatological reconstructions, and archaeological evidence. The results show that short-term climatic anomalies alone rarely lead to severe subsistence crises, and during every famine period there is evidence of other contributing factors, such as unfavourable weather phenomena, disease, or social unrest. The variety of cultivated crops and agricultural techniques is shown to increase the region’s resilience to climatic anomalies and to crop failures.     

Thermal range of coastal tourism resort microclimates

With considerable evidence demonstrating the intrinsic importance of weather and climate for tourist decision-making, the projected redistribution of climatic resources as a result of climate change is anticipated to have important consequences for temporal and spatial patterns of tourism demand. Some of the world's leading coastal tourism destinations (Mediterranean and Caribbean) have been identified as becoming ‘too hot’ for tourism. However, the microclimates of coastal tourism areas have not been considered by such assessments. With a focus on thermo-physiologically relevant climatic parameters, this paper examines the adaptive range of microclimatic conditions available in two coastal resort settings in the Caribbean islands of Barbados and Tobago. Recorded weather parameters include air temperature, black globe temperature, relative humidity, and wind speed. The microclimatic results, which are presented using the Universal Thermal Climate Index (UTCI), show that hourly thermal conditions can range up to 4 °C in different outdoor areas of the resort property (beach, garden, pool, cabana). This is salient in terms of characterizing tourism destinations for climate change assessments, as the results reveal that thermal conditions can vary at the micro-scale of a coastal resort, with the ability for tourists to attain thermally comfortable conditions within a single resort property. When a location becomes thermally uncomfortable (i.e. too hot), tourists can change their location (e.g. move from the pool to the beach), providing an onsite adaptive range between 1 °C and 4 °C. The results also demonstrate that thermo-physiologically relevant climatic parameters provide a more precise estimate of the available range of thermal comfort than is inferred from ambient temperature alone. The findings are discussed in the context of tourists’ climatic preferences and reveal that the microclimatic conditions recorded in this study (UTCI 29–36 °C) are well within tourists’ preferred thermal conditions and do not exceed tourists’ thermal thresholds for coastal tourism.     

How Risk Perceptions Influence Evacuations from Hurricanes and Compliance with Government Directives

In this study we present evidence supporting the view that people's perceived risk of hurricane‐related hazards can be reduced to a single seriousness score that spans different hurricane‐induced risk types and that compliant behavior with official advisories is strongly dependent on whether one perceives a high risk with respect to any type of hurricane‐related hazards. Our analysis suggests that people are less sensitive to risk type than they are to the general seriousness of the risks. Using this single seriousness score, representing a composite risk measure, emergency managers can be informed about the severity of the public's risk perceptions to impending hurricane hazards and might better craft their public directives in ways that minimize disruptive evacuations and achieve greater compliance with government directives.     

An exploration of regional climate change scenarios for Scotland

Based on a high resolution regional climate model (RCM) experiment, a climate change scenario for Scotland for the end of this century is constructed with the aim of exploring the added value of utilising a regional rather than a global model (GCM) for climate change scenario construction. Spatial variations in regional seasonal average temperature and precipitation change are analysed and the local response of ‘extreme’ weather events to climate warming is assessed using daily model output. The analyses suggest that in comparison with the GCM, the RCM does not provide fundamentally different patterns of seasonal climate change and daily weather response over Scotland, although it does capture more subtle spatial variations in these changes. The RCM also simulates more realistic daily weather events than the GCM, although the relative changes in the frequencies of daily extremes are not greatly different. However, with the limited length of the single model simulation analysed here, it is not easy to establish how robust and significant are the sub‐national patterns of climate response across Scotland. To improve the quality and comprehensiveness of regional climate change scenario information, a number of research issues remain to be addressed.     

The new Siberia

This paper assesses relationships between Scottish ice climbing and daily weather conditions between 1961 and 1990. Synoptic air flow and instrumental climate data from Braemar and Fort Augustus were analysed in relation to first ascents of ice climbs in the Cairngorms, and on Ben Nevis and Creag Meagaidh. Lagged weather variables were calculated and stepwise logistic regression was used to estimate optimum models for both areas. Significant variables are anticyclonicity, low minimum air temperature and northerly or easterly airflow (Cairngorms, P = 0.0006); and northerly or easterly airflow, low minimum air temperature and low precipitation (Ben Nevis and Creag Meagaidh, P < 0.0001). A five‐day cold spell is optimum for Ben Nevis and Creag Meagaidh. A week with relatively little precipitation is beneficial in both areas. Air flow direction is more influential than vorticity, the optimum predictors of ice conditions using synoptic data alone are a persistent easterly component (beneficial), and a persistent southerly and westerly component (detrimental), P < 0.0001.     

Has it become warmer in Alberta? Mapping temperature changes for the period 1950–2010 across Alberta,Canada

When a Canada‐wide daily climate time series, covering the period 1950–2010, became available, an opportunity arose to analyze the time series for trends of a variety of temperature indices. The 6,833 climate grid cells covering Alberta, each with an area of 10 km by 10 km, allowed the detailed mapping of 30 temperature indices across the province. From each time series, an annual series was computed, which then enabled trend analyses using the non‐parametric Mann‐Kendall and Sen Slope tests. New maps could be created at an unprecedented spatial resolution, and an associated website was developed to access all trends and changes between 1950 and 2010 for all grid cells at albertaclimaterecords.com . The confidence levels of some temperature trends exceed 99%, while others are below 80%. In Alberta's south, annual average temperatures have increased by 1°C to 2°C since the 1950s, but in Alberta's north the increase is 2°C to 4°C. The growing season has lengthened by between one and five weeks since the 1950s, while the number of frost days has declined. The most significant trends observed were increases in mean annual and winter temperatures, and declines in the number of days below ?20°C and heating degree days.     

Climate and visitation to Utah's ‘Mighty 5’ national parks

ABSTRACT

The relationship between climate and visitation to managed natural areas has been analyzed at a variety of different spatial scales. We expand upon our existing knowledge on this topic by: (1) determining how a wide range of climate variables affect visitation across a regional tourism system; and (2) identifying which variables affect visitation system-wide and which variables only affect visitation at specific parks. Our analysis focuses on five national parks located in southern Utah (USA) commonly referred to as ‘the Mighty 5’. We found monthly average daily maximum temperatures were the best predictor of system-wide visitation, suggesting average daily maximum temperatures play a more direct role in tourists’ travel decisions relative to other climate variables, including other derivations of temperature. We also found declines in monthly park visitation for three parks (Arches, Canyonlands, and Capitol Reef) once average daily maximum temperatures exceed 25 C. For Bryce Canyon and Zion however, monthly visitation continued to increase well above this threshold. The geophysical characteristics of these parks appear to mediate the relationship between average daily maximum temperature and visitation. The commonly found ‘inverted U-shape’ relationship between temperature and visitation should not be seen as a universal maxim. We also found precipitation to be a poor predictor of system-wide visitation, but a significant factor shaping the travel decisions of visitors to Bryce Canyon, the only park to offer snow-based outdoor recreation opportunities. Future research should not disregard the possibility of precipitation being a significant factor shaping visitors’ travel decisions. By conducting our analyses at two distinct scales, we have found there is a difference between the individual climate variables that are regionally-significant drivers of visitation and those that are locally-significant drivers of visitation. Scale matters in analyses of the relationship between climate and visitation.     

Farming in the troposphere: drawing together affective atmospheres and elemental geographies

This paper focuses on the much-neglected contribution of weather to research encounters. Affective atmospheres and elemental geographies are used as a platform to examine the vibrant materialities of the troposphere. The weather encapsulates human and non-human bodies, moods and actions in an enveloping space and I trace how these materialities and immaterialities are transmitted between bodies in the research setting. In a (post)phenomenological sense, certain atmospheric and meteorological events figure as lively participants. Through three research moments with farmers, I discuss how various weather conditions such as a warm balmy spring, wet muddy winter and the suffocating heat of summer enables thinking on the relational weight of atmospheres. By following participants throughout the circadian rhythms of farming over a year, seasonal fluctuations were recorded. Thus, researcher effort to comprehend how bodies become attuned and sensitive to the causal powers of the troposphere is foregrounded within share-farming experiences.