Large-scale climate, precipitation and British river flows: identifying hydroclimatological connections and dynamics
Investigation of links between large-scale climate and river basin-scale precipitation and discharge is necessary to improve understanding of the hydroclimatological process chain. This paper aims to identify the large-scale circulation variables that yield significant statistical relationships with...
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ftloughboroughun:oai:figshare.com:article/9484928 2023-05-15T17:34:43+02:00 Large-scale climate, precipitation and British river flows: identifying hydroclimatological connections and dynamics David Lavers Christel Prudhomme David M. Hannah 2010-01-01T00:00:00Z https://figshare.com/articles/journal_contribution/Large-scale_climate_precipitation_and_British_river_flows_identifying_hydroclimatological_connections_and_dynamics/9484928 unknown 2134/21182 https://figshare.com/articles/journal_contribution/Large-scale_climate_precipitation_and_British_river_flows_identifying_hydroclimatological_connections_and_dynamics/9484928 CC BY-NC-ND 4.0 CC-BY-NC-ND Earth Sciences not elsewhere classified untagged Text Journal contribution 2010 ftloughboroughun 2022-01-01T20:13:43Z Investigation of links between large-scale climate and river basin-scale precipitation and discharge is necessary to improve understanding of the hydroclimatological process chain. This paper aims to identify the large-scale circulation variables that yield significant statistical relationships with precipitation and river flow for ten British basins, and evaluate the dependence of the strength and location of centres of climate-hydrology correlation on basin situation. Using quasi-geostrophic theory as a framework to select appropriate explanatory variables, this study undertakes ranked correlation analysis between gridded ERA-40 atmospheric data and precipitation and river flow observations at a monthly resolution over a 26. year period. Relationships between large-scale atmospheric circulation and precipitation and river flow are found to vary spatially and seasonally across Britain, with strongest associations evident in western Britain and in winter. Monthly precipitation totals and river flow demonstrate highly significant negative (positive) correlation with mean sea level pressure MSLP (Zonal Wind U), but the location of high correlation centres vary for different basins. There are weaker atmospheric links with river flow compared to precipitation, reflecting the non-linearity of the rainfall-runoff transformation and the importance of basin properties as a modifier of climate inputs. The North Atlantic Oscillation Index (NAOI) cannot capture the seasonal movement of climate-hydrology connections due to the fixed station locations used for the index calculation, and thus has weaker monthly correlations with precipitation and river flow compared to gridded ERA-40 circulation variables (and in particular the comparable MSLP). © 2010 Elsevier B.V. Other Non-Article Part of Journal/Newspaper North Atlantic North Atlantic oscillation Loughborough University: Figshare |
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Loughborough University: Figshare |
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Earth Sciences not elsewhere classified untagged |
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Earth Sciences not elsewhere classified untagged David Lavers Christel Prudhomme David M. Hannah Large-scale climate, precipitation and British river flows: identifying hydroclimatological connections and dynamics |
topic_facet |
Earth Sciences not elsewhere classified untagged |
description |
Investigation of links between large-scale climate and river basin-scale precipitation and discharge is necessary to improve understanding of the hydroclimatological process chain. This paper aims to identify the large-scale circulation variables that yield significant statistical relationships with precipitation and river flow for ten British basins, and evaluate the dependence of the strength and location of centres of climate-hydrology correlation on basin situation. Using quasi-geostrophic theory as a framework to select appropriate explanatory variables, this study undertakes ranked correlation analysis between gridded ERA-40 atmospheric data and precipitation and river flow observations at a monthly resolution over a 26. year period. Relationships between large-scale atmospheric circulation and precipitation and river flow are found to vary spatially and seasonally across Britain, with strongest associations evident in western Britain and in winter. Monthly precipitation totals and river flow demonstrate highly significant negative (positive) correlation with mean sea level pressure MSLP (Zonal Wind U), but the location of high correlation centres vary for different basins. There are weaker atmospheric links with river flow compared to precipitation, reflecting the non-linearity of the rainfall-runoff transformation and the importance of basin properties as a modifier of climate inputs. The North Atlantic Oscillation Index (NAOI) cannot capture the seasonal movement of climate-hydrology connections due to the fixed station locations used for the index calculation, and thus has weaker monthly correlations with precipitation and river flow compared to gridded ERA-40 circulation variables (and in particular the comparable MSLP). © 2010 Elsevier B.V. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
David Lavers Christel Prudhomme David M. Hannah |
author_facet |
David Lavers Christel Prudhomme David M. Hannah |
author_sort |
David Lavers |
title |
Large-scale climate, precipitation and British river flows: identifying hydroclimatological connections and dynamics |
title_short |
Large-scale climate, precipitation and British river flows: identifying hydroclimatological connections and dynamics |
title_full |
Large-scale climate, precipitation and British river flows: identifying hydroclimatological connections and dynamics |
title_fullStr |
Large-scale climate, precipitation and British river flows: identifying hydroclimatological connections and dynamics |
title_full_unstemmed |
Large-scale climate, precipitation and British river flows: identifying hydroclimatological connections and dynamics |
title_sort |
large-scale climate, precipitation and british river flows: identifying hydroclimatological connections and dynamics |
publishDate |
2010 |
url |
https://figshare.com/articles/journal_contribution/Large-scale_climate_precipitation_and_British_river_flows_identifying_hydroclimatological_connections_and_dynamics/9484928 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
2134/21182 https://figshare.com/articles/journal_contribution/Large-scale_climate_precipitation_and_British_river_flows_identifying_hydroclimatological_connections_and_dynamics/9484928 |
op_rights |
CC BY-NC-ND 4.0 |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766133646164492288 |