Greenhouse hydrology

Wilby, Robert L.

doi:10.1177/030913339501900304

Cited by 14 publications

(8 citation statements)

References 71 publications

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“…Consequently, we emphasize recent work here. See Cohen (1990), Giorgi and Mearns (1991), Robock et al (1993), Wilby (1995), Hewitson and Crane (1996), Joubert and Hewitson (1997), Wilby and Wigley (1997) and Xu (1999) for earlier empirical downscaling discussions and reviews.…”

Section: Developments In Empirical Downscalingmentioning

confidence: 99%

Developments and prospects in synoptic climatology

Yarnal

Comrie

Frakes

et al. 2001

Intl Journal of Climatology

261

167

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Developments in synoptic climatology in the 1990s included advances in traditional synoptic climatology, empirical downscaling, and dynamical downscaling (i.e. regional climate modelling). The research emphasis in traditional, empirical-statistical approaches to synoptic climatology shifted from methodological development to applications of widely accepted classification techniques, including manual, correlation-based, eigenvector-based, compositing and indexing schemes. In contrast, most efforts in empirical downscaling, which became a well-established field of synoptic climatology during the 1990s, were directed to model development; applications were of secondary concern. Similarly, regional climate models (RCMs) burst onto the scene during the decade and focused on model development, although important progress was made in linking or coupling RCMs to regional or local surface climate systems. This paper discusses prospects for the future of traditional synoptic climatology, empirical downscaling and regional climate modelling. It concludes by looking at the present role of geographic information system (GIS) concepts in synoptic climatology and the potential future role of GIS to the field.

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Section: Developments In Empirical Downscalingmentioning

confidence: 99%

Developments and prospects in synoptic climatology

Yarnal

Comrie

Frakes

et al. 2001

Intl Journal of Climatology

261

167

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“…Additional investigation into the interaction between stemflow generation and varying levels of tree mortality is critical to furthering our knowledge of the effects of environmental change in forests as standing dead trees can persist for decades in certain environments (Angers et al ., ). Understanding these hotspots in response to external stressors, environmental change and their potential connection to the broader hydrologic cycle and streamflow is warranted and has long been indicated as being a critically important research direction in the field of forest hydrology (Wilby, ; Clifford, ; USDA, , Levia et al ., ).…”

Section: Introductionmentioning

confidence: 99%

Hydrologic variation of stemflow yield across co‐occurring dominant canopy trees of varying mortality

Frost

Levia

2013

Ecohydrology

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Concern over forest dieback due to environmental change and the long residence times of standing dead trees necessitates understanding the impact of forest health on the redistribution of precipitation by forest canopies. Stemflow represents a critical point source input of water and nutrients to forest ecosystems. We investigate the variation in water storage capacity, stemflow volume and stemflow funnelling ratios from two co‐occurring dominant canopy species, Fagus grandifolia Ehrh. (American beech) and Liriodendron tulipifera L. (yellow poplar), across three different mortality classes: live, stressed (girdled) and standing dead. Over 25 rainfall events, interspecific differences in stemflow volume distributions were significant over all (U = 45 881, p < 0·0001), leaf‐off (U = 11 285, p < 0·0001) and leaf‐on (U = 11 582, p < 0·0001) events. Stemflow funnelling ratios were greater in F. grandifolia (26·0 ± 1·2) compared with L. tulipifera (4·9 ± 0·4). Minimum precipitation threshold amounts required to initiate stemflow were lower for F. grandifolia compared with L. tulipifera, and lower for live and stressed compared with dead. Mean stemflow volume from both species was 1·5 ± 0·2 l stem−1 event−1 from dead stems, 89·2 ± 7·7 l stem−1 event−1 from stressed stems and 91·3 ± 8·9 l stem−1 event−1 from live stems. The results of this study improve our understanding of the influence of mortality on rainfall partitioning and stemflow fluxes and may give insight into how mortality generating factors such as pest defoliation and climate change may alter stemflow relationships in forested ecosystems. Copyright © 2013 John Wiley & Sons, Ltd.

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“…As a result, environmental problems may be exacerbated by human activities. It is therefore necessary to separate the effects of anthropogenic activities from climate variation and to evaluate the respective contributions of human activities and climate variation to karst spring discharge depletion (Wilby, 1995;Yu and Chu, 2010). However, there are insufficient data in most karst basins.…”

Section: Introductionmentioning

confidence: 99%

Simulating effect of anthropogenic activities and climate variation on Liulin Springs discharge depletion by using the ARIMAX model

Hao

Sun

et al. 2012

Hydrological Processes

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Based on the groundwater development process, and regional economic and social developing history, we divided the spring hydrological process of the Liulin Springs Basin into two periods: pre‐1973 and post‐1974. In the first period (i.e. 1957–1973), the spring discharge was affected by climate variation alone, and in the second period (i.e. 1974–2009), the spring discharge charge was influenced by both climate variation and human activities. A piecewise analysis strategy was used to differentiate the contribution of anthropogenic activities from climate variation on karst spring discharge depletion in the second period. Then, the ARIMAX model was applied to spring flow time series of the first period to develop a model for the effects of climate variation only. Using this model, we estimated the spring discharge in the second period solely under the influence of climate variation. Based on the water budget, we subtracted observed spring discharge from the estimated spring discharge and acquired the contribution of human activities on spring discharge depletion for the second period. The results of the analysis indicated that the contribution of climate variation to the spring discharge depletion is−0.20 m3/s from 1970s to 2000s. The contribution of anthropogenic activities to the spring flow depletion was −2.56 m3/s in 2000s, which was about 13 times more than that of climate variation. Our analysis further indicates that groundwater exploitation only accounts for 29% of the spring flow depletion due to the effects of human activities. The remaining 71% of the depletion is likely to be caused by other human activities, including dam building, dewatering during coal mining, and deforestation. Copyright © 2012 John Wiley & Sons, Ltd.

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Greenhouse hydrology

Cited by 14 publications

References 71 publications

Developments and prospects in synoptic climatology

Developments and prospects in synoptic climatology

Hydrologic variation of stemflow yield across co‐occurring dominant canopy trees of varying mortality

Simulating effect of anthropogenic activities and climate variation on Liulin Springs discharge depletion by using the ARIMAX model

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