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Interannual persistence of the seasonal snow cover in a glacierized catchment
- Kay Helfricht, Johannes Schöber, Katrin Schneider, Rudolf Sailer, Michael Kuhn
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- Journal:
- Journal of Glaciology / Volume 60 / Issue 223 / 2014
- Published online by Cambridge University Press:
- 10 July 2017, pp. 889-904
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- Article
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Knowledge of the spatial snow distribution and its interannual persistence is of interest for a broad spectrum of issues in cryospheric sciences. In this study, snow depths derived from airborne laser scanning are analyzed for interannual persistence of the seasonal snow cover in a partly glacierized mountain area (~36 km2). At the end of five accumulation periods, the snow-covered area varied by 16% of its temporal mean. Mean snow depth of the total area ranged by a factor of two (1.31–2.58 m), with a standard deviation of 0.42 m. Interannual correlation coefficients of snow depth distribution were in the range 0.68–0.84. Of the investigated area, 75% was found to be interannually persistent. The remaining area showed variable snow cover from year to year, caused by occasional avalanches and changes in surface topography as a result of glacier retreat. Snow cover underwent a change from a homogeneous distribution on the former glacier surface to a more heterogeneous snow cover in the recently deglaciated terrain. A geostatistical analysis shows interannual persistence in scaling behavior of snow depth in ice-free terrain with scale break distances at 20 m. Scale-invariant behavior of snow depth is indicated over >100 m on smooth glacier surfaces.
10 - Monitoring the health impacts of global climate change
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- By Diarmid H. Campbell-Lendrum, Infectious Diseases, Department London School of Hygiene and Tropical Medicine, London, UK, Paul Wilkinson, Department of Public Health and Policy, London School of Hygiene and Tropical Medicine, London, UK, Katrin Kuhn, Department of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK, R. Sari Kovats, Department of Epidemiology and Population Health, London School of Hygiene and Tropical Medicine, London, UK, Andy Haines, London School of Hygiene and Tropical Medicine, London, UK, Bettina Menne, WHO European Centre for Environment and Health, Rome Division, Rome, Italy, Terry W. Parr, Centre for Ecology and Hydrology, Merlewood, UK
- Edited by P. Martens, Universiteit Maastricht, Netherlands, A. J. McMichael, Australian National University, Canberra
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- Book:
- Environmental Change, Climate and Health
- Published online:
- 28 July 2009
- Print publication:
- 22 August 2002, pp 253-289
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Summary
Introduction
As the processes of global environmental change proceed, the importance of monitoring health outcomes of climate change increases (e.g. Haines. et al, 1993; Haines, 1999). Accurate, reliable and comparable data are necessary for detecting and quantifying the early impacts of these changes on health, and as an essential first step towards planned adaptation to minimize adverse health impacts in a future, environmentally changed, world (McMichael et al., 1996; Balbus, 1998).
These issues are well illustrated by recent developments in relation to global climate change. This chapter developed from a report of a working group convened by the World Health Organization, European Centre for Environment and Health (WHO-ECEH), which prepared a background document for the Third Ministerial Conference on Environment and Health, held in London in June 1999. The document pointed to the need for the monitoring of potential impacts of climate change on human health, and highlighted the potential role of long-term integrated monitoring sites in investigating links between anthropogenic climate change, natural ecosystems and human health.
This chapter also draws on work of the NoLIMITS (Networking of Long term Integrated Monitoring Sites), preparatory action of the European Union ENRICH (European Network for Research in Global Change) programme. NoLIMITS aims to link current environmental monitoring sites throughout Europe, to make available policy-relevant scientific information to address environmental changes and their consequences at local to global scales, to provide a focus for collaborative interdisciplinary research between sites, networks and users, and to explore the possibility of introducing new measurements at existing monitoring sites to meet specific scientific and policy needs.