Evaluation of global continental hydrology as simulated by the Land-surface Processes and eXchanges Dynamic Global Vegetation Model
Global freshwater resources are sensitive to changes in climate, land cover and population density and distribution. The Land-surface Processes and eXchanges Dynamic Global Vegetation Model is a recent development of the Lund-Potsdam-Jena model with improved representation of fire-vegetation interac...
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fttriple:oai:gotriple.eu:oai:doaj.org/article:20025388782c49078e64854030e38980 2023-05-15T17:58:01+02:00 Evaluation of global continental hydrology as simulated by the Land-surface Processes and eXchanges Dynamic Global Vegetation Model S. J. Murray P. N. Foster I. C. Prentice 2011-01-01 https://doi.org/10.5194/hess-15-91-2011 http://www.hydrol-earth-syst-sci.net/15/91/2011/hess-15-91-2011.pdf https://doaj.org/article/20025388782c49078e64854030e38980 en eng Copernicus Publications doi:10.5194/hess-15-91-2011 1027-5606 1607-7938 http://www.hydrol-earth-syst-sci.net/15/91/2011/hess-15-91-2011.pdf https://doaj.org/article/20025388782c49078e64854030e38980 undefined Hydrology and Earth System Sciences, Vol 15, Iss 1, Pp 91-105 (2011) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2011 fttriple https://doi.org/10.5194/hess-15-91-2011 2023-01-22T19:30:57Z Global freshwater resources are sensitive to changes in climate, land cover and population density and distribution. The Land-surface Processes and eXchanges Dynamic Global Vegetation Model is a recent development of the Lund-Potsdam-Jena model with improved representation of fire-vegetation interactions. It allows simultaneous consideration of the effects of changes in climate, CO2 concentration, natural vegetation and fire regime shifts on the continental hydrological cycle. Here the model is assessed for its ability to simulate large-scale spatial and temporal runoff patterns, in order to test its suitability for modelling future global water resources. Comparisons are made against observations of streamflow and a composite dataset of modelled and observed runoff (1986–1995) and are also evaluated against soil moisture data and the Palmer Drought Severity Index. The model captures the main features of the geographical distribution of global runoff, but tends to overestimate runoff in much of the Northern Hemisphere (where this can be somewhat accounted for by freshwater consumption and the unrealistic accumulation of the simulated winter snowpack in permafrost regions) and the southern tropics. Interannual variability is represented reasonably well at the large catchment scale, as are seasonal flow timings and monthly high and low flow events. Further improvements to the simulation of intra-annual runoff might be achieved via the addition of river flow routing. Overestimates of runoff in some basins could likely be corrected by the inclusion of transmission losses and direct-channel evaporation. Article in Journal/Newspaper permafrost Unknown Hydrology and Earth System Sciences 15 1 91 105 |
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envir geo S. J. Murray P. N. Foster I. C. Prentice Evaluation of global continental hydrology as simulated by the Land-surface Processes and eXchanges Dynamic Global Vegetation Model |
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envir geo |
description |
Global freshwater resources are sensitive to changes in climate, land cover and population density and distribution. The Land-surface Processes and eXchanges Dynamic Global Vegetation Model is a recent development of the Lund-Potsdam-Jena model with improved representation of fire-vegetation interactions. It allows simultaneous consideration of the effects of changes in climate, CO2 concentration, natural vegetation and fire regime shifts on the continental hydrological cycle. Here the model is assessed for its ability to simulate large-scale spatial and temporal runoff patterns, in order to test its suitability for modelling future global water resources. Comparisons are made against observations of streamflow and a composite dataset of modelled and observed runoff (1986–1995) and are also evaluated against soil moisture data and the Palmer Drought Severity Index. The model captures the main features of the geographical distribution of global runoff, but tends to overestimate runoff in much of the Northern Hemisphere (where this can be somewhat accounted for by freshwater consumption and the unrealistic accumulation of the simulated winter snowpack in permafrost regions) and the southern tropics. Interannual variability is represented reasonably well at the large catchment scale, as are seasonal flow timings and monthly high and low flow events. Further improvements to the simulation of intra-annual runoff might be achieved via the addition of river flow routing. Overestimates of runoff in some basins could likely be corrected by the inclusion of transmission losses and direct-channel evaporation. |
format |
Article in Journal/Newspaper |
author |
S. J. Murray P. N. Foster I. C. Prentice |
author_facet |
S. J. Murray P. N. Foster I. C. Prentice |
author_sort |
S. J. Murray |
title |
Evaluation of global continental hydrology as simulated by the Land-surface Processes and eXchanges Dynamic Global Vegetation Model |
title_short |
Evaluation of global continental hydrology as simulated by the Land-surface Processes and eXchanges Dynamic Global Vegetation Model |
title_full |
Evaluation of global continental hydrology as simulated by the Land-surface Processes and eXchanges Dynamic Global Vegetation Model |
title_fullStr |
Evaluation of global continental hydrology as simulated by the Land-surface Processes and eXchanges Dynamic Global Vegetation Model |
title_full_unstemmed |
Evaluation of global continental hydrology as simulated by the Land-surface Processes and eXchanges Dynamic Global Vegetation Model |
title_sort |
evaluation of global continental hydrology as simulated by the land-surface processes and exchanges dynamic global vegetation model |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/hess-15-91-2011 http://www.hydrol-earth-syst-sci.net/15/91/2011/hess-15-91-2011.pdf https://doaj.org/article/20025388782c49078e64854030e38980 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Hydrology and Earth System Sciences, Vol 15, Iss 1, Pp 91-105 (2011) |
op_relation |
doi:10.5194/hess-15-91-2011 1027-5606 1607-7938 http://www.hydrol-earth-syst-sci.net/15/91/2011/hess-15-91-2011.pdf https://doaj.org/article/20025388782c49078e64854030e38980 |
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undefined |
op_doi |
https://doi.org/10.5194/hess-15-91-2011 |
container_title |
Hydrology and Earth System Sciences |
container_volume |
15 |
container_issue |
1 |
container_start_page |
91 |
op_container_end_page |
105 |
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1766166541085179904 |