Preprints

Filtering by Subject: Physical and Environmental Geography

The disaster trap

Eli Lazarus

Published: 2021-05-04
Subjects: Geography, Human Geography, Nature and Society Relations, Physical and Environmental Geography

The long, open-ended period of recovery from a disaster event is the phase of a disaster that the interdisciplinary field of disaster studies struggles to understand. In the process of rebuilding, places do not simply reset – they transform, often in ways that confound any reduction of disaster risk, instead making people and settings more vulnerable to future hazard events. Reducing disaster [...]

High resolution, annual maps of the characteristics of smallholder-dominated croplands at national scales

Lyndon D Estes, Su Ye, Lei Song, Boka Luo, J. Ronald Eastman, Zhenhua Meng, Qi Zhang, Dennis McRitchie, Stephanie R. Debats, Justus Muhando, Angeline H. Amukoa, Brian W. Kaloo, Jackson Makuru, Ben K. Mbatia, Isaac M. Muasa, Julius Mucha, Adelide M. Mugami, Judith M. Mugami, Francis W. Muinde, Fredrick M. Mwawaza, Jeff Ochieng, Charles J. Oduol, Purent Oduor, Thuo Wanjiku, Joseph G. Wanyoike, Ryan Avery, Kelly Caylor

Published: 2021-03-12
Subjects: Agriculture, Environmental Monitoring, Environmental Sciences, Geographic Information Sciences, Geography, Life Sciences, Natural Resources and Conservation, Physical and Environmental Geography, Physical Sciences and Mathematics, Remote Sensing, Spatial Science, Sustainability

Understanding agricultural change requires reliable, frequently updated maps that describe the characteristics of croplands. Such data are often unavailable for regions dominated by smallholder agricultural systems, which are particularly challenging for remote sensing. To overcome these challenges, we designed a system to minimize several sources of error that arise when mapping smallholder [...]

Linkage between the Forest Fires and the Meteorological Parameters during the current climatic regime using Spatial Clustering, Regression, and Combination Matrix Analysis

Manish Pandey, Aman Arora, Masood A Siddiqui, Satarupa Mitra, Naveen Pandey, Sangeeta Soni, Amanjot Kaur, U.K. Shukla

Published: 2021-02-25
Subjects: Geographic Information Sciences, Geography, Physical and Environmental Geography, Remote Sensing, Spatial Science

The present study has been carried out to assess the spatial behaviour of forest fire count (FFC) data and Climate Forecast System Reanalysis (CFSR) derived meteorological parameters in Uttar Pradesh to explore the linkages amongst them. Ten years (2005 to 2014) of forest fire event data and of meteorological data have been analysed using GIS overlay, ordinary least square (OLS) regression, [...]

Analysis of off-site economic costs induced by runoff and soil erosion: example of two areas in the northwestern European loess belt for the last two decades (Normandy, France)

Edouard Patault, Jérôme Ledun, Valentin Landemaine, Arnaud Soulignac, Jean-Baptiste Richet, Matthieu Fournier, Jean-François Ouvry, Olivier Cerdan, Benoit Laignel

Published: 2021-01-21
Subjects: Physical and Environmental Geography

While soil erosion and runoff physical aspects are widely addressed in the literature, few studies have focused on the economical dimension. However, it is essential to consider this dimension to conduct appropriate land use management policies. Erosion and runoff are known to result into on-site and off-site impacts. A fully exhaustive analysis of erosion and runoff economic costs may be [...]

Climate change research and action must look beyond 2100

Christopher Lyon, Erin E Saupe, Christopher J Smith, Daniel J Hill, Andrew P Beckerman, Lindsay C Stringer, Robert Marchant, James McKay, Ariane Burke, Paul O'Higgins, Alexander M Dunhill, Bethany J Allen, Julien Riel-Salvatore, Tracy Aze

Published: 2020-12-16
Subjects: Environmental Sciences, Environmental Studies, Geography, Human Geography, Nature and Society Relations, Oceanography and Atmospheric Sciences and Meteorology, Physical and Environmental Geography, Physical Sciences and Mathematics, Social and Behavioral Sciences

Anthropogenic activity is changing Earth’s climate and ecosystems in ways that are potentially dangerous and disruptive to humans. Greenhouse gas concentrations in the atmosphere continue to rise, ensuring these changes will be felt for centuries beyond 2100, the current benchmark for prediction. Estimating the effects of past, current, and potential future emissions to only 2100 is therefore [...]

Operationalising coastal resilience to flood and erosion hazard: A demonstration for England

Ian H Townend, Jon R French, Robert J Nicholls, Sally Brown, Stephen Carpenter, Ivan D Haigh, Chris T Hill, Eli Lazarus, Edmund C Penning-Rowsell, Charlotte E L Thompson, Emma L Tompkins

Published: 2020-12-02
Subjects: Geomorphology, Nature and Society Relations, Physical and Environmental Geography, Sustainability

Resilience is widely seen as an important attribute of coastal systems and, as a concept, is increasingly prominent in policy documents. However, there are conflicting ideas on what constitutes resilience and its operationalisation as an overarching principle of coastal management remains limited. In this paper, we show how resilience to coastal flood and erosion hazard could be measured and [...]

Comparing patterns of hurricane washover into built and unbuilt environments

Eli Lazarus, Evan B Goldstein, Luke Taylor, Hannah Williams

Published: 2020-10-23
Subjects: Geomorphology, Nature and Society Relations, Physical and Environmental Geography, Sustainability

Extreme geohazard events can change landscape morphology by redistributing huge volumes of sediment. Event-driven sediment deposition is typically studied in unbuilt settings – despite the ubiquity of occurrence and high economic cost of these geohazard impacts in built environments. Moreover, sedimentary consequences of extreme events in built settings tend to go unrecorded because they are [...]

Finding karstic caves and rockshelters in the Inner Asian mountain corridor using predictive modelling and field survey

Patrick Cuthbertson, Tobias Ullman, Christian Büdel, Aristeidis Varis, Abay Namen, Reimar Seltmann, Denné Reed, Zhaken Taimagambetov, Radu Iovita

Published: 2020-07-10
Subjects: Geographic Information Sciences, Geography, Physical and Environmental Geography, Social and Behavioral Sciences, Spatial Science

The area of the Inner Asian Mountain Corridor (IAMC) follows the foothills and piedmont zones around the northern limits of Asia’s interior mountains, connecting two important areas for human evolution: the Fergana valley and the Siberian Altai. Prior research has suggested the IAMC may have provided an area of connected refugia from harsh climates during the Pleistocene. To date, this region [...]

Climate has contrasting direct and indirect effects on armed conflicts

David Helman, Ben Zaitchik, Chris Funk

Published: 2020-07-08
Subjects: Environmental Indicators and Impact Assessment, Environmental Monitoring, Environmental Sciences, Environmental Studies, Geography, Human Geography, International and Area Studies, Library and Information Science, Life Sciences, Nature and Society Relations, Physical and Environmental Geography, Physical Sciences and Mathematics, Remote Sensing, Social and Behavioral Sciences, Statistics and Probability

There is an active debate regarding the influence that climate has on the risk of armed conflict, which stems from challenges in assembling unbiased datasets, competing hypotheses on the mechanisms of climate influence, and the difficulty of disentangling direct and indirect climate effects. We use gridded historical non-state conflict records, satellite data, and land surface models in a [...]

A framework to quantify the human footprint in Africa using supply and demand of net primary production

Abdulhakim M Abdi

Published: 2020-05-28
Subjects: Environmental Indicators and Impact Assessment, Environmental Sciences, Geography, Nature and Society Relations, Physical and Environmental Geography, Physical Sciences and Mathematics, Remote Sensing, Social and Behavioral Sciences, Spatial Science, Sustainability

The human-environment connection in the mostly rural drylands of Africa forms a complex, interlinked system that provides ecosystem services. This system is susceptible to climatic variability that impacts the supply of its products, and high population growth, which impacts the demand for these products. When plants remove carbon dioxide from the atmosphere through the process of photosynthesis, [...]

Coastal flooding will disproportionately impact people on river deltas

Doug Edmonds

Published: 2020-01-09
Subjects: Earth Sciences, Environmental Studies, Geography, Physical and Environmental Geography, Physical Sciences and Mathematics, Social and Behavioral Sciences

Climate change is intensifying tropical cyclones, accelerating sea-level rise, and increasing coastal flooding. Coastal flooding will not affect all environments equally, and river deltas are especially vulnerable because of their low elevations, densely populated cities, and river channels that propagate coastal floods inland. Yet, we do not know how many people live on deltas and their exposure [...]

Convergent human and climate forcing of late-Holocene flooding in northwest England

Daniel Schillereff, Richard Chiverrell, Neil Macdonald, Janet Hooke, Katharine Welsh, Gayane Piliposyan, Ian W Croudance

Published: 2019-08-12
Subjects: Earth Sciences, Environmental Sciences, Geography, Geomorphology, Physical and Environmental Geography, Physical Sciences and Mathematics, Social and Behavioral Sciences

Concern is growing that climate change may amplify global flood risk but short hydrological data series hamper hazard assessment. Lake sediment reconstructions are capturing a fuller picture of rare, high-magnitude events but the UK has produced few lake palaeoflood records. We report the longest lake-derived flood reconstruction for the UK to date, a 1500-year record from Brotherswater, [...]

Neoglacial trends in diatom dynamics from a small alpine lake in the Qinling Mountains of central China

Bo Cheng, Jennifer K Adams, JianHui Chen, Aifeng Zhou, Qing Zhang, Anson W. Mackay

Published: 2019-07-05
Subjects: Geography, Life Sciences, Physical and Environmental Geography, Social and Behavioral Sciences

During the latter stages of the Holocene, and prior to anthropogenic global warming, the Earth underwent a period of cooling called the neoglacial. The neoglacial was associated with declining summer insolation and changes to Earth surface albedo. Although impacts varied globally, in China the neoglacial was generally associated with cooler, more arid climate, which led to renewed permafrost [...]

Decadal land-use/land-cover and land surface temperature change in Dubai and implications on the urban heat island effect: A preliminary assessment

Abdulhakim M Abdi

Published: 2019-06-05
Subjects: Environmental Sciences, Environmental Studies, Geographic Information Sciences, Geography, International and Area Studies, Near and Middle Eastern Studies, Other Environmental Sciences, Physical and Environmental Geography, Physical Sciences and Mathematics, Remote Sensing, Social and Behavioral Sciences

The emirate of Dubai is the most populous and most developed of the seven emirates that comprise the United Arab Emirates. By the end of the 20th century, the emirate had shifted its economy from being primarily petroleum-based to a focus on tourism and financial services. The emirate’s capital, also named Dubai, has been growing at a rapid pace; the population in 1999 was 862,000 inhabitants, [...]

The El Niño – La Niña cycle and recent trends in supply and demand of net primary productivity in African drylands

Abdulhakim M Abdi, Anton Vrieling, G. T. Yengoh, Assaf Anyamba, Jonathan Seaquist, Caroline C. Ummenhofer, Jonas Ardö

Published: 2019-04-23
Subjects: Climate, Environmental Sciences, Geography, Nature and Society Relations, Oceanography and Atmospheric Sciences and Meteorology, Physical and Environmental Geography, Physical Sciences and Mathematics, Remote Sensing, Social and Behavioral Sciences

The role of El Niño-Southern Oscillation (ENSO) in the balance between supply and demand of net primary productivity (NPP) over Africa is unclear. Here, we analyze the impact of ENSO on this balance in a spatially explicit framework using gridded population data from the WorldPop project, satellite-derived data on NPP supply, and statistical data from the United Nations. Our analyses demonstrate [...]

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