Atmospheric circulation patterns associated with the variability of River Ammer floods: evidence from observed and proxy data
The relationship between the frequency of River Ammer floods (southern Germany) and atmospheric circulation variability is investigated based on observational Ammer River discharge data back to 1926 and a flood layer time series from varved sediments of the downstream Lake Ammer for the pre-instrume...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
COPERNICUS GESELLSCHAFT MBH
2016
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/39791/ https://epic.awi.de/id/eprint/39791/1/cp-12-377-2016.pdf http://www.clim-past.net/12/377/2016/ https://hdl.handle.net/10013/epic.46921 https://hdl.handle.net/10013/epic.46921.d001 |
id |
ftawi:oai:epic.awi.de:39791 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:39791 2024-09-15T18:23:34+00:00 Atmospheric circulation patterns associated with the variability of River Ammer floods: evidence from observed and proxy data Rimbu, Norel Czymzik, Markus Ionita, Monica Lohmann, Gerrit Brauer, A. 2016-02-23 application/pdf https://epic.awi.de/id/eprint/39791/ https://epic.awi.de/id/eprint/39791/1/cp-12-377-2016.pdf http://www.clim-past.net/12/377/2016/ https://hdl.handle.net/10013/epic.46921 https://hdl.handle.net/10013/epic.46921.d001 unknown COPERNICUS GESELLSCHAFT MBH https://epic.awi.de/id/eprint/39791/1/cp-12-377-2016.pdf https://hdl.handle.net/10013/epic.46921.d001 Rimbu, N. orcid:0000-0003-2832-9396 , Czymzik, M. , Ionita, M. orcid:0000-0001-8240-4380 , Lohmann, G. orcid:0000-0003-2089-733X and Brauer, A. (2016) Atmospheric circulation patterns associated with the variability of River Ammer floods: evidence from observed and proxy data , Climate of the Past, 12 , pp. 377-385 . doi:10.5194/cp-12-377-2016 <https://doi.org/10.5194/cp-12-377-2016> , hdl:10013/epic.46921 EPIC3Climate of the Past, COPERNICUS GESELLSCHAFT MBH, 12, pp. 377-385, ISSN: 1814-9324 Article isiRev 2016 ftawi https://doi.org/10.5194/cp-12-377-2016 2024-06-24T04:13:16Z The relationship between the frequency of River Ammer floods (southern Germany) and atmospheric circulation variability is investigated based on observational Ammer River discharge data back to 1926 and a flood layer time series from varved sediments of the downstream Lake Ammer for the pre-instrumental period back to 1766. A composite analysis reveals that, at synoptic timescales, observed River Ammer floods are associated with enhanced moisture transport from the Atlantic Ocean and the Mediterranean towards the Ammer region, a pronounced trough over western Europe as well as enhanced potential vorticity at upper levels. We argue that this synoptic-scale configuration can trigger heavy precipitation and floods in the Ammer region. Interannual to multidecadal increases in flood frequency, as detected in the instrumental discharge record, are associated with a wave train pattern extending from the North Atlantic to western Asia, with a prominent negative center over western Europe. A similar atmospheric circulation pattern is associated with increases in flood layer frequency in the Lake Ammer sediment record during the pre-instrumental period. We argue that the complete flood layer time series from Lake Ammer sediments covering the last 5500 years contains information about atmospheric circulation variability on interannual to millennial timescales. Article in Journal/Newspaper North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Climate of the Past 12 2 377 385 |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
The relationship between the frequency of River Ammer floods (southern Germany) and atmospheric circulation variability is investigated based on observational Ammer River discharge data back to 1926 and a flood layer time series from varved sediments of the downstream Lake Ammer for the pre-instrumental period back to 1766. A composite analysis reveals that, at synoptic timescales, observed River Ammer floods are associated with enhanced moisture transport from the Atlantic Ocean and the Mediterranean towards the Ammer region, a pronounced trough over western Europe as well as enhanced potential vorticity at upper levels. We argue that this synoptic-scale configuration can trigger heavy precipitation and floods in the Ammer region. Interannual to multidecadal increases in flood frequency, as detected in the instrumental discharge record, are associated with a wave train pattern extending from the North Atlantic to western Asia, with a prominent negative center over western Europe. A similar atmospheric circulation pattern is associated with increases in flood layer frequency in the Lake Ammer sediment record during the pre-instrumental period. We argue that the complete flood layer time series from Lake Ammer sediments covering the last 5500 years contains information about atmospheric circulation variability on interannual to millennial timescales. |
format |
Article in Journal/Newspaper |
author |
Rimbu, Norel Czymzik, Markus Ionita, Monica Lohmann, Gerrit Brauer, A. |
spellingShingle |
Rimbu, Norel Czymzik, Markus Ionita, Monica Lohmann, Gerrit Brauer, A. Atmospheric circulation patterns associated with the variability of River Ammer floods: evidence from observed and proxy data |
author_facet |
Rimbu, Norel Czymzik, Markus Ionita, Monica Lohmann, Gerrit Brauer, A. |
author_sort |
Rimbu, Norel |
title |
Atmospheric circulation patterns associated with the variability of River Ammer floods: evidence from observed and proxy data |
title_short |
Atmospheric circulation patterns associated with the variability of River Ammer floods: evidence from observed and proxy data |
title_full |
Atmospheric circulation patterns associated with the variability of River Ammer floods: evidence from observed and proxy data |
title_fullStr |
Atmospheric circulation patterns associated with the variability of River Ammer floods: evidence from observed and proxy data |
title_full_unstemmed |
Atmospheric circulation patterns associated with the variability of River Ammer floods: evidence from observed and proxy data |
title_sort |
atmospheric circulation patterns associated with the variability of river ammer floods: evidence from observed and proxy data |
publisher |
COPERNICUS GESELLSCHAFT MBH |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/39791/ https://epic.awi.de/id/eprint/39791/1/cp-12-377-2016.pdf http://www.clim-past.net/12/377/2016/ https://hdl.handle.net/10013/epic.46921 https://hdl.handle.net/10013/epic.46921.d001 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
EPIC3Climate of the Past, COPERNICUS GESELLSCHAFT MBH, 12, pp. 377-385, ISSN: 1814-9324 |
op_relation |
https://epic.awi.de/id/eprint/39791/1/cp-12-377-2016.pdf https://hdl.handle.net/10013/epic.46921.d001 Rimbu, N. orcid:0000-0003-2832-9396 , Czymzik, M. , Ionita, M. orcid:0000-0001-8240-4380 , Lohmann, G. orcid:0000-0003-2089-733X and Brauer, A. (2016) Atmospheric circulation patterns associated with the variability of River Ammer floods: evidence from observed and proxy data , Climate of the Past, 12 , pp. 377-385 . doi:10.5194/cp-12-377-2016 <https://doi.org/10.5194/cp-12-377-2016> , hdl:10013/epic.46921 |
op_doi |
https://doi.org/10.5194/cp-12-377-2016 |
container_title |
Climate of the Past |
container_volume |
12 |
container_issue |
2 |
container_start_page |
377 |
op_container_end_page |
385 |
_version_ |
1810463790963097600 |