Spatial and temporal variability of winter streamflow over Romania and its relationship to large-scale atmospheric circulation
In this study we have examined the spatial and temporal variability of winter (DJF) streamflow over Romania as recorded at 46 hydrological stations over the period 1935 -2010. An empirical orthogonal function analysis (EOFs) was employed to characterize the spatial variability of winter streamflow....
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Online Access: | https://epic.awi.de/id/eprint/36296/ http://www.sciencedirect.com/science/article/pii/S0022169414007057# https://hdl.handle.net/10013/epic.44168 |
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ftawi:oai:epic.awi.de:36296 2024-09-15T18:23:21+00:00 Spatial and temporal variability of winter streamflow over Romania and its relationship to large-scale atmospheric circulation Ionita, Monica Chelcea, Silvia Rimbu, Norel Adler, Mary-Jeanne 2014-09-18 https://epic.awi.de/id/eprint/36296/ http://www.sciencedirect.com/science/article/pii/S0022169414007057# https://hdl.handle.net/10013/epic.44168 unknown ELSEVIER SCIENCE BV Ionita, M. orcid:0000-0001-8240-4380 , Chelcea, S. , Rimbu, N. orcid:0000-0003-2832-9396 and Adler, M. J. (2014) Spatial and temporal variability of winter streamflow over Romania and its relationship to large-scale atmospheric circulation , Journal of Hydrology . doi:10.1016/j.jhydrol.2014.09.024 <https://doi.org/10.1016/j.jhydrol.2014.09.024> , hdl:10013/epic.44168 EPIC3Journal of Hydrology, ELSEVIER SCIENCE BV, ISSN: 0022-1694 Article isiRev 2014 ftawi https://doi.org/10.1016/j.jhydrol.2014.09.024 2024-06-24T04:09:53Z In this study we have examined the spatial and temporal variability of winter (DJF) streamflow over Romania as recorded at 46 hydrological stations over the period 1935 -2010. An empirical orthogonal function analysis (EOFs) was employed to characterize the spatial variability of winter streamflow. The dominant mode captures in-phase variability of river flow anomalies over the entire country. The second mode is characterized by a north-south dipole, emphasizing the influence of topography over the streamflow variability. Both modes are related with large-scale atmospheric circulation and sea surface temperature patterns. We show that the Arctic/North Atlantic Oscillation, East Atlantic, East Atlantic/Western Russia and Scandinavian patterns control a significant part of the interannual winter streamflow variability as captured by these two modes. Moreover, we show that the winter streamflow is very sensitive to the influence of winter temperatures. Positive streamflow anomalies are recorded during warm winters, which are favorable to precipitation fallen as rain, while cold winters can favor snowy winters and frozen ground and hence reduced winter discharges. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Journal of Hydrology 519 1339 1349 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
In this study we have examined the spatial and temporal variability of winter (DJF) streamflow over Romania as recorded at 46 hydrological stations over the period 1935 -2010. An empirical orthogonal function analysis (EOFs) was employed to characterize the spatial variability of winter streamflow. The dominant mode captures in-phase variability of river flow anomalies over the entire country. The second mode is characterized by a north-south dipole, emphasizing the influence of topography over the streamflow variability. Both modes are related with large-scale atmospheric circulation and sea surface temperature patterns. We show that the Arctic/North Atlantic Oscillation, East Atlantic, East Atlantic/Western Russia and Scandinavian patterns control a significant part of the interannual winter streamflow variability as captured by these two modes. Moreover, we show that the winter streamflow is very sensitive to the influence of winter temperatures. Positive streamflow anomalies are recorded during warm winters, which are favorable to precipitation fallen as rain, while cold winters can favor snowy winters and frozen ground and hence reduced winter discharges. |
format |
Article in Journal/Newspaper |
author |
Ionita, Monica Chelcea, Silvia Rimbu, Norel Adler, Mary-Jeanne |
spellingShingle |
Ionita, Monica Chelcea, Silvia Rimbu, Norel Adler, Mary-Jeanne Spatial and temporal variability of winter streamflow over Romania and its relationship to large-scale atmospheric circulation |
author_facet |
Ionita, Monica Chelcea, Silvia Rimbu, Norel Adler, Mary-Jeanne |
author_sort |
Ionita, Monica |
title |
Spatial and temporal variability of winter streamflow over Romania and its relationship to large-scale atmospheric circulation |
title_short |
Spatial and temporal variability of winter streamflow over Romania and its relationship to large-scale atmospheric circulation |
title_full |
Spatial and temporal variability of winter streamflow over Romania and its relationship to large-scale atmospheric circulation |
title_fullStr |
Spatial and temporal variability of winter streamflow over Romania and its relationship to large-scale atmospheric circulation |
title_full_unstemmed |
Spatial and temporal variability of winter streamflow over Romania and its relationship to large-scale atmospheric circulation |
title_sort |
spatial and temporal variability of winter streamflow over romania and its relationship to large-scale atmospheric circulation |
publisher |
ELSEVIER SCIENCE BV |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/36296/ http://www.sciencedirect.com/science/article/pii/S0022169414007057# https://hdl.handle.net/10013/epic.44168 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
EPIC3Journal of Hydrology, ELSEVIER SCIENCE BV, ISSN: 0022-1694 |
op_relation |
Ionita, M. orcid:0000-0001-8240-4380 , Chelcea, S. , Rimbu, N. orcid:0000-0003-2832-9396 and Adler, M. J. (2014) Spatial and temporal variability of winter streamflow over Romania and its relationship to large-scale atmospheric circulation , Journal of Hydrology . doi:10.1016/j.jhydrol.2014.09.024 <https://doi.org/10.1016/j.jhydrol.2014.09.024> , hdl:10013/epic.44168 |
op_doi |
https://doi.org/10.1016/j.jhydrol.2014.09.024 |
container_title |
Journal of Hydrology |
container_volume |
519 |
container_start_page |
1339 |
op_container_end_page |
1349 |
_version_ |
1810463558003064832 |